mysql插入guid提示duplicate entry_【已解决】再次研究：Cygwin下编译Buildroot时在编译libtool-2.2.10时出错：/usr/lib/gcc/i686-pc-...

【问题】

之前已经折腾了足够长时间了：

现象继续研究其原因。

【解决过程】

1.后来想到，貌似可以想办法，去给libtool在configure期间，传递进去-v参数，使得可以输出verbose的信息。

使得在

D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\output\build\host-libtool-2.2.10\config.log

中的具体错误的位置：

configure:3536: checking whether the C compiler works

configure:3558: /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc -O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib conftest.c >&5

/usr/lib/gcc/i686-pc-cygwin/4.7.3/cc1.exe: error while loading shared libraries: ?: cannot open shared object file: No such file or directory

configure:3562: $? = 1

时，可以显示详细信息，由此，或许可以找到错误根本原因。

比如有可能是找到具体是缺少了某些库，或者是某些库不能用，或者是路径错误等等。

2.此处，先验证，手动去运行对应的命令，也是同样错误：CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05

$ cd /home/CLi/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10/

CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$ rm -rf config.cache

CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$ PATH="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/bin:/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin:/bin:/home/CLi/develop/crosstool-ng/x-tools/arm-xscale-linux-gnueabi/bin:/opt/crosstool-ng/bin:/home/CLi/develop/crosstool-ng/x-tools/armxscalecurl/bin:/usr/local/bin:/usr/bin:/cygdrive/d/tmp/dev_install_root/Python27_x64:/cygdrive/d/tmp/dev_install_root/Python27_x64/Lib/site-packages/PyQt4:/cygdrive/d/tmp/dev_install_root/Perl64/site/bin:/cygdrive/d/tmp/dev_install_root/Perl64/bin:/cygdrive/c/Program Files/Common Files/Microsoft Shared/Windows Live:/cygdrive/c/Program Files (x86)/Common Files/Microsoft Shared/Windows Live:/cygdrive/c/Windows/system32:/cygdrive/c/Windows:/cygdrive/c/Windows/System32/Wbem:/cygdrive/c/Windows/System32/WindowsPowerShell/v1.0:/cygdrive/c/Program Files (x86)/Microsoft SQL Server/100/Tools/Binn:/cygdrive/c/Program Files/Microsoft SQL Server/100/Tools/Binn:/cygdrive/c/Program Files/Microsoft SQL Server/100/DTS/Binn:/cygdrive/d/tmp/WordPress/mysql/mysql-5.5.18/MySQL/MySQL Server 5.5/bin:/cygdrive/d/tmp/WordPress/DevRoot/MySQL/MySQL Server 5.5/bin:/cygdrive/d/tmp/WordPress/DevRoot/php-5.3.6-Win32-VC9-x64:/cygdrive/d/tmp/WordPress/DevRoot/php-5.3.6-Win32-VC9-x64/ext:/cygdrive/d/tmp/WordPress/DevRoot/Python27:/cygdrive/c/Program Files (x86)/Common Files/Acronis/SnapAPI:/cygdrive/c/Program Files (x86)/Windows Live/Shared:/cygdrive/c/Program Files/Java/jdk1.7.0_11/bin:/home/CLi/develop/docbook/tools/fop/lib:/home/CLi/develop/docbook/tools/fop:/cygdrive/d/DevInstallRoot/FF/DD_IDE_1.1.2/TOK/BIN:/cygdrive/d/DevInstallRoot/FF/DD_IDE_1.2.0/TOK/BIN:/cygdrive/d/DevRoot/EmbeddedDevelop/trunk/Research/CLI/FF/FBK/develop/tools/develop-tools:/cygdrive/d/tmp/WordPress/DevRoot/Python27/Scripts:/cygdrive/d/tmp/dev_install_root/PostgreSQL/8.3/bin:/cygdrive/d/tmp/dev_install_root/ant/apache-ant-1.8.4/bin:/cygdrive/c/Program Files/nodejs:/cygdrive/c/Program Files/Microsoft/Web Platform Installer:/cygdrive/c/Program Files/TortoiseSVN/bin:/cygdrive/d/DevRoot/IndustrialMobileAutomation/HandheldDataSetter/ANTLR/batchFile:/cygdrive/c/Program Files (x86)/QuickTime/QTSystem:/cygdrive/d/tmp/tmp_dev_root/android/adt-bundle-windows/sdk/platform-tools:/cygdrive/d/tmp/dev_install_root/Tesseract-OCR:/cygdrive/d/tmp/dev_install_root/jython2.5.3/bin:/cygdrive/d/devinstallroot/gnuarm/bin:/cygdrive/d/tmp/dev_install_root/HTML Help Workshop:/cygdrive/c/Users/CLi/AppData/Roaming/npm:/usr/lib/lapack:/opt/gcc-4.0.4-glibc-2.3.6-kernel-2.6.17/sysroot-arm-xscale-linux-gnu/usr/include:/opt/gcc-4.0.4-glibc-2.3.6-kernel-2.6.17/sysroot-arm-xscale-linux-gnu/usr/include/linux" AR="/bin/ar" AS="/bin/as" LD="/bin/ld" NM="/bin/nm" CC="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc" GCC="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc" CXX="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/g++" CPP="/bin/cpp" CPPFLAGS="-I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" CFLAGS="-O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" CXXFLAGS="-O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" LDFLAGS="-L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib" PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 PKG_CONFIG="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/pkg-config" PKG_CONFIG_SYSROOT_DIR="/" PKG_CONFIG_LIBDIR="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib/pkgconfig:/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/share/pkgconfig" PERLLIB="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib/perl" LD_LIBRARY_PATH="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib:" CFLAGS="-O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" LDFLAGS="-L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib" ./configure --prefix="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr" --sysconfdir="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/etc" --enable-shared --disable-static --disable-gtk-doc --disable-doc --disable-docs --disable-documentation --with-xmlto=no --with-fop=no

configure: WARNING: unrecognized options: --disable-gtk-doc, --disable-doc, --disable-docs, --disable-documentation, --with-xmlto, --with-fop

## -------------------------- ##

## Configuring libtool 2.2.10 ##

## -------------------------- ##

checking for a BSD-compatible install... /bin/install -c

checking whether build environment is sane... yes

checking for a thread-safe mkdir -p... /bin/mkdir -p

checking for gawk... gawk

checking whether make sets $(MAKE)... yes

checking whether subdir libobjs are useable... yes

checking for gcc... /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc

checking whether the C compiler works... no

configure: error: in `/home/CLi/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10':

configure: error: C compiler cannot create executables

See `config.log' for more details.

3.再去想办法，如何传入类似-v的参数，如何显示详细信息。

先看看./configure –help的信息：CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$ ./configure --help

`configure' configures libtool 2.2.10 to adapt to many kinds of systems.

Usage: ./configure [OPTION]... [VAR=VALUE]...

To assign environment variables (e.g., CC, CFLAGS...), specify them as

VAR=VALUE. See below for descriptions of some of the useful variables.

Defaults for the options are specified in brackets.

Configuration:

-h, --help display this help and exit

--help=short display options specific to this package

--help=recursive display the short help of all the included packages

-V, --version display version information and exit

-q, --quiet, --silent do not print `checking...' messages

--cache-file=FILE cache test results in FILE [disabled]

-C, --config-cache alias for `--cache-file=config.cache'

-n, --no-create do not create output files

--srcdir=DIR find the sources in DIR [configure dir or `..']

Installation directories:

--prefix=PREFIX install architecture-independent files in PREFIX

[/usr/local]

--exec-prefix=EPREFIX install architecture-dependent files in EPREFIX

[PREFIX]

By default, `make install' will install all the files in

`/usr/local/bin', `/usr/local/lib' etc. You can specify

an installation prefix other than `/usr/local' using `--prefix',

for instance `--prefix=$HOME'.

For better control, use the options below.

Fine tuning of the installation directories:

--bindir=DIR user executables [EPREFIX/bin]

--sbindir=DIR system admin executables [EPREFIX/sbin]

--libexecdir=DIR program executables [EPREFIX/libexec]

--sysconfdir=DIR read-only single-machine data [PREFIX/etc]

--sharedstatedir=DIR modifiable architecture-independent data [PREFIX/com]

--localstatedir=DIR modifiable single-machine data [PREFIX/var]

--libdir=DIR object code libraries [EPREFIX/lib]

--includedir=DIR C header files [PREFIX/include]

--oldincludedir=DIR C header files for non-gcc [/usr/include]

--datarootdir=DIR read-only arch.-independent data root [PREFIX/share]

--datadir=DIR read-only architecture-independent data [DATAROOTDIR]

--infodir=DIR info documentation [DATAROOTDIR/info]

--localedir=DIR locale-dependent data [DATAROOTDIR/locale]

--mandir=DIR man documentation [DATAROOTDIR/man]

--docdir=DIR documentation root [DATAROOTDIR/doc/libtool]

--htmldir=DIR html documentation [DOCDIR]

--dvidir=DIR dvi documentation [DOCDIR]

--pdfdir=DIR pdf documentation [DOCDIR]

--psdir=DIR ps documentation [DOCDIR]

Program names:

--program-prefix=PREFIX prepend PREFIX to installed program names

--program-suffix=SUFFIX append SUFFIX to installed program names

--program-transform-name=PROGRAM run sed PROGRAM on installed program names

System types:

--build=BUILD configure for building on BUILD [guessed]

--host=HOST cross-compile to build programs to run on HOST [BUILD]

Optional Features:

--disable-option-checking ignore unrecognized --enable/--with options

--disable-FEATURE do not include FEATURE (same as --enable-FEATURE=no)

--enable-FEATURE[=ARG] include FEATURE [ARG=yes]

--disable-ltdl-install do not install libltdl

--disable-dependency-tracking speeds up one-time build

--enable-dependency-tracking do not reject slow dependency extractors

--enable-shared[=PKGS] build shared libraries [default=yes]

--enable-static[=PKGS] build static libraries [default=yes]

--enable-fast-install[=PKGS]

optimize for fast installation [default=yes]

--disable-libtool-lock avoid locking (might break parallel builds)

--enable-ltdl-install install libltdl

Optional Packages:

--with-PACKAGE[=ARG] use PACKAGE [ARG=yes]

--without-PACKAGE do not use PACKAGE (same as --with-PACKAGE=no)

--with-pic try to use only PIC/non-PIC objects [default=use

both]

--with-gnu-ld assume the C compiler uses GNU ld [default=no]

Some influential environment variables:

CC C compiler command

CFLAGS C compiler flags

LDFLAGS linker flags, e.g. -L if you have libraries in a

nonstandard directory

LIBS libraries to pass to the linker, e.g. -l

CPPFLAGS (Objective) C/C++ preprocessor flags, e.g. -I if

you have headers in a nonstandard directory

CPP C preprocessor

CXX C++ compiler command

CXXFLAGS C++ compiler flags

CXXCPP C++ preprocessor

F77 Fortran 77 compiler command

FFLAGS Fortran 77 compiler flags

FC Fortran compiler command

FCFLAGS Fortran compiler flags

Use these variables to override the choices made by `configure' or to help

it to find libraries and programs with nonstandard names/locations.

Report bugs to .

CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$

貌似没有类似-v的参数。

4.然后再去找找，对于config.log中输出的：configure:3558: /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc -O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib conftest.c >&5

所对应的是哪些configure的代码产生此处的内容的，然后尝试给：

此处的CC，即：

/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc

去加上对应的-v，以使得可以输出详细信息。

结果是对于：

D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\output\build\host-libtool-2.2.10\configure

中相关的代码：if { { ac_try="$ac_link_default"

case "(($ac_try" in

*\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;

*) ac_try_echo=$ac_try;;

esac

eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""

$as_echo "$ac_try_echo"; } >&5

(eval "$ac_link_default") 2>&5

ac_status=$?

$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5

test $ac_status = 0; };

无从下手。

所以，算了，还是直接给CC的值，去加上-v，看看是否可行吧。

5.然后看到了之前上面的输出：configure:3558: /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc -O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib conftest.c >&5

中的一些额外参数，比如：

-O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include

其对应的变量CFLAGS(或CXXFLAGS)传递进入的。所以此处，可以去修改CFLAGS，把-v传递进去。

(注意到此处实际上有两个CFLAGS，但值是一样的，所以索性两个一起改)

改为：PATH="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/bin:/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin:/bin:/home/CLi/develop/crosstool-ng/x-tools/arm-xscale-linux-gnueabi/bin:/opt/crosstool-ng/bin:/home/CLi/develop/crosstool-ng/x-tools/armxscalecurl/bin:/usr/local/bin:/usr/bin:/cygdrive/d/tmp/dev_install_root/Python27_x64:/cygdrive/d/tmp/dev_install_root/Python27_x64/Lib/site-packages/PyQt4:/cygdrive/d/tmp/dev_install_root/Perl64/site/bin:/cygdrive/d/tmp/dev_install_root/Perl64/bin:/cygdrive/c/Program Files/Common Files/Microsoft Shared/Windows Live:/cygdrive/c/Program Files (x86)/Common Files/Microsoft Shared/Windows Live:/cygdrive/c/Windows/system32:/cygdrive/c/Windows:/cygdrive/c/Windows/System32/Wbem:/cygdrive/c/Windows/System32/WindowsPowerShell/v1.0:/cygdrive/c/Program Files (x86)/Microsoft SQL Server/100/Tools/Binn:/cygdrive/c/Program Files/Microsoft SQL Server/100/Tools/Binn:/cygdrive/c/Program Files/Microsoft SQL Server/100/DTS/Binn:/cygdrive/d/tmp/WordPress/mysql/mysql-5.5.18/MySQL/MySQL Server 5.5/bin:/cygdrive/d/tmp/WordPress/DevRoot/MySQL/MySQL Server 5.5/bin:/cygdrive/d/tmp/WordPress/DevRoot/php-5.3.6-Win32-VC9-x64:/cygdrive/d/tmp/WordPress/DevRoot/php-5.3.6-Win32-VC9-x64/ext:/cygdrive/d/tmp/WordPress/DevRoot/Python27:/cygdrive/c/Program Files (x86)/Common Files/Acronis/SnapAPI:/cygdrive/c/Program Files (x86)/Windows Live/Shared:/cygdrive/c/Program Files/Java/jdk1.7.0_11/bin:/home/CLi/develop/docbook/tools/fop/lib:/home/CLi/develop/docbook/tools/fop:/cygdrive/d/DevInstallRoot/FF/DD_IDE_1.1.2/TOK/BIN:/cygdrive/d/DevInstallRoot/FF/DD_IDE_1.2.0/TOK/BIN:/cygdrive/d/DevRoot/EmbeddedDevelop/trunk/Research/CLI/FF/FBK/develop/tools/develop-tools:/cygdrive/d/tmp/WordPress/DevRoot/Python27/Scripts:/cygdrive/d/tmp/dev_install_root/PostgreSQL/8.3/bin:/cygdrive/d/tmp/dev_install_root/ant/apache-ant-1.8.4/bin:/cygdrive/c/Program Files/nodejs:/cygdrive/c/Program Files/Microsoft/Web Platform Installer:/cygdrive/c/Program Files/TortoiseSVN/bin:/cygdrive/d/DevRoot/IndustrialMobileAutomation/HandheldDataSetter/ANTLR/batchFile:/cygdrive/c/Program Files (x86)/QuickTime/QTSystem:/cygdrive/d/tmp/tmp_dev_root/android/adt-bundle-windows/sdk/platform-tools:/cygdrive/d/tmp/dev_install_root/Tesseract-OCR:/cygdrive/d/tmp/dev_install_root/jython2.5.3/bin:/cygdrive/d/devinstallroot/gnuarm/bin:/cygdrive/d/tmp/dev_install_root/HTML Help Workshop:/cygdrive/c/Users/CLi/AppData/Roaming/npm:/usr/lib/lapack:/opt/gcc-4.0.4-glibc-2.3.6-kernel-2.6.17/sysroot-arm-xscale-linux-gnu/usr/include:/opt/gcc-4.0.4-glibc-2.3.6-kernel-2.6.17/sysroot-arm-xscale-linux-gnu/usr/include/linux" AR="/bin/ar" AS="/bin/as" LD="/bin/ld" NM="/bin/nm" CC="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc" GCC="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc" CXX="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/g++" CPP="/bin/cpp" CPPFLAGS="-I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" CFLAGS="-v -O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" CXXFLAGS="-O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" LDFLAGS="-L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib" PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 PKG_CONFIG="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/pkg-config" PKG_CONFIG_SYSROOT_DIR="/" PKG_CONFIG_LIBDIR="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib/pkgconfig:/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/share/pkgconfig" PERLLIB="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib/perl" LD_LIBRARY_PATH="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib:" CFLAGS="-v -O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" LDFLAGS="-L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib" ./configure --prefix="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr" --sysconfdir="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/etc" --enable-shared --disable-static --disable-gtk-doc --disable-doc --disable-docs --disable-documentation --with-xmlto=no --with-fop=no

然后去运行试试：

错误肯定是一样的：CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$ PATH="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/bin:/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin:/bin:/home/CLi/develop/crosstool-ng/x-tools/arm-xscale-linux-gnueabi/bin:/opt/crosstool-ng/bin:/home/CLi/develop/crosstool-ng/x-tools/armxscalecurl/bin:/usr/local/bin:/usr/bin:/cygdrive/d/tmp/dev_install_root/Python27_x64:/cygdrive/d/tmp/dev_install_root/Python27_x64/Lib/site-packages/PyQt4:/cygdrive/d/tmp/dev_install_root/Perl64/site/bin:/cygdrive/d/tmp/dev_install_root/Perl64/bin:/cygdrive/c/Program Files/Common Files/Microsoft Shared/Windows Live:/cygdrive/c/Program Files (x86)/Common Files/Microsoft Shared/Windows Live:/cygdrive/c/Windows/system32:/cygdrive/c/Windows:/cygdrive/c/Windows/System32/Wbem:/cygdrive/c/Windows/System32/WindowsPowerShell/v1.0:/cygdrive/c/Program Files (x86)/Microsoft SQL Server/100/Tools/Binn:/cygdrive/c/Program Files/Microsoft SQL Server/100/Tools/Binn:/cygdrive/c/Program Files/Microsoft SQL Server/100/DTS/Binn:/cygdrive/d/tmp/WordPress/mysql/mysql-5.5.18/MySQL/MySQL Server 5.5/bin:/cygdrive/d/tmp/WordPress/DevRoot/MySQL/MySQL Server 5.5/bin:/cygdrive/d/tmp/WordPress/DevRoot/php-5.3.6-Win32-VC9-x64:/cygdrive/d/tmp/WordPress/DevRoot/php-5.3.6-Win32-VC9-x64/ext:/cygdrive/d/tmp/WordPress/DevRoot/Python27:/cygdrive/c/Program Files (x86)/Common Files/Acronis/SnapAPI:/cygdrive/c/Program Files (x86)/Windows Live/Shared:/cygdrive/c/Program Files/Java/jdk1.7.0_11/bin:/home/CLi/develop/docbook/tools/fop/lib:/home/CLi/develop/docbook/tools/fop:/cygdrive/d/DevInstallRoot/FF/DD_IDE_1.1.2/TOK/BIN:/cygdrive/d/DevInstallRoot/FF/DD_IDE_1.2.0/TOK/BIN:/cygdrive/d/DevRoot/EmbeddedDevelop/trunk/Research/CLI/FF/FBK/develop/tools/develop-tools:/cygdrive/d/tmp/WordPress/DevRoot/Python27/Scripts:/cygdrive/d/tmp/dev_install_root/PostgreSQL/8.3/bin:/cygdrive/d/tmp/dev_install_root/ant/apache-ant-1.8.4/bin:/cygdrive/c/Program Files/nodejs:/cygdrive/c/Program Files/Microsoft/Web Platform Installer:/cygdrive/c/Program Files/TortoiseSVN/bin:/cygdrive/d/DevRoot/IndustrialMobileAutomation/HandheldDataSetter/ANTLR/batchFile:/cygdrive/c/Program Files (x86)/QuickTime/QTSystem:/cygdrive/d/tmp/tmp_dev_root/android/adt-bundle-windows/sdk/platform-tools:/cygdrive/d/tmp/dev_install_root/Tesseract-OCR:/cygdrive/d/tmp/dev_install_root/jython2.5.3/bin:/cygdrive/d/devinstallroot/gnuarm/bin:/cygdrive/d/tmp/dev_install_root/HTML Help Workshop:/cygdrive/c/Users/CLi/AppData/Roaming/npm:/usr/lib/lapack:/opt/gcc-4.0.4-glibc-2.3.6-kernel-2.6.17/sysroot-arm-xscale-linux-gnu/usr/include:/opt/gcc-4.0.4-glibc-2.3.6-kernel-2.6.17/sysroot-arm-xscale-linux-gnu/usr/include/linux" AR="/bin/ar" AS="/bin/as" LD="/bin/ld" NM="/bin/nm" CC="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc" GCC="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc" CXX="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/g++" CPP="/bin/cpp" CPPFLAGS="-I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" CFLAGS="-v -O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" CXXFLAGS="-O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" LDFLAGS="-L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib" PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 PKG_CONFIG="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/pkg-config" PKG_CONFIG_SYSROOT_DIR="/" PKG_CONFIG_LIBDIR="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib/pkgconfig:/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/share/pkgconfig" PERLLIB="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib/perl" LD_LIBRARY_PATH="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib:" CFLAGS="-v -O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" LDFLAGS="-L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib" ./configure --prefix="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr" --sysconfdir="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/etc" --enable-shared --disable-static --disable-gtk-doc --disable-doc --disable-docs --disable-documentation --with-xmlto=no --with-fop=no

configure: WARNING: unrecognized options: --disable-gtk-doc, --disable-doc, --disable-docs, --disable-documentation, --with-xmlto, --with-fop

## -------------------------- ##

## Configuring libtool 2.2.10 ##

## -------------------------- ##

checking for a BSD-compatible install... /bin/install -c

checking whether build environment is sane... yes

checking for a thread-safe mkdir -p... /bin/mkdir -p

checking for gawk... gawk

checking whether make sets $(MAKE)... yes

checking whether subdir libobjs are useable... yes

checking for gcc... /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc

checking whether the C compiler works... no

configure: error: in `/home/CLi/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10':

configure: error: C compiler cannot create executables

See `config.log' for more details.

然后去看对应的config.log，看看是否有详细信息输出：

果然是有详细信息的：configure:3536: checking whether the C compiler works

configure:3558: /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc -v -O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib conftest.c >&5

Using built-in specs.

COLLECT_GCC=/bin/gcc

COLLECT_LTO_WRAPPER=/bin/../lib/gcc/i686-pc-cygwin/4.7.3/lto-wrapper.exe

Target: i686-pc-cygwin

Configured with: /cygdrive/i/szsz/git/cygwin-ports-gcc/gcc-4.7.3-1/src/gcc-4.7.3/configure --srcdir=/cygdrive/i/szsz/git/cygwin-ports-gcc/gcc-4.7.3-1/src/gcc-4.7.3 --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --libexecdir=/usr/lib --datadir=/usr/share --localstatedir=/var --sysconfdir=/etc --datarootdir=/usr/share --docdir=/usr/share/doc/gcc -C --build=i686-pc-cygwin --host=i686-pc-cygwin --target=i686-pc-cygwin --without-libiconv-prefix --without-libintl-prefix --enable-shared --enable-shared-libgcc --enable-static --enable-version-specific-runtime-libs --enable-bootstrap --disable-__cxa_atexit --with-dwarf2 --with-arch=i686 --with-tune=generic --disable-sjlj-exceptions --enable-languages=ada,c,c++,fortran,java,lto,objc,obj-c++ --enable-graphite --enable-threads=posix --enable-libgomp --disable-libitm --enable-libquadmath --enable-libquadmath-support --enable-libssp --enable-libada --enable-libjava --enable-libgcj-sublibs --disable-java-awt --disable-symvers --with-ecj-jar=/usr/share/java/ecj.jar --with-gnu-ld --with-gnu-as --with-cloog-include=/usr/include/cloog-ppl --with-system-zlib : (reconfigured) /cygdrive/i/szsz/git/cygwin-ports-gcc/gcc-4.7.3-1/src/gcc-4.7.3/configure --srcdir=/cygdrive/i/szsz/git/cygwin-ports-gcc/gcc-4.7.3-1/src/gcc-4.7.3 --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --libexecdir=/usr/lib --datadir=/usr/share --localstatedir=/var --sysconfdir=/etc --datarootdir=/usr/share --docdir=/usr/share/doc/gcc -C --build=i686-pc-cygwin --host=i686-pc-cygwin --target=i686-pc-cygwin --without-libiconv-prefix --without-libintl-prefix --enable-shared --enable-shared-libgcc --enable-static --enable-version-specific-runtime-libs --enable-bootstrap --disable-__cxa_atexit --with-dwarf2 --with-arch=i686 --with-tune=generic --disable-sjlj-exceptions --enable-languages=ada,c,c++,fortran,java,lto,objc,obj-c++ --enable-graphite --enable-threads=posix --enable-libgomp --disable-libitm --enable-libquadmath --enable-libquadmath-support --enable-libssp --enable-libada --enable-libjava --enable-libgcj-sublibs --disable-java-awt --disable-symvers --with-ecj-jar=/usr/share/java/ecj.jar --with-gnu-ld --with-gnu-as --with-cloog-include=/usr/include/cloog-ppl --with-system-zlib

Thread model: posix

gcc version 4.7.3 (GCC)

COLLECT_GCC_OPTIONS='-v' '-O2' '-I' '/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include' '-I' '/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include' '-L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib' '-L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib' '-mtune=generic' '-march=i686'

/bin/../lib/gcc/i686-pc-cygwin/4.7.3/cc1.exe -quiet -v -I /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -I /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -iprefix /bin/../lib/gcc/i686-pc-cygwin/4.7.3/ -D__CYGWIN32__ -D__CYGWIN__ -Dunix -D__unix__ -D__unix -idirafter /usr/lib/../include/w32api -idirafter ../../include/w32api conftest.c -quiet -dumpbase conftest.c -mtune=generic -march=i686 -auxbase conftest -O2 -version -o /tmp/ccldAXzD.s

/usr/lib/gcc/i686-pc-cygwin/4.7.3/cc1.exe: error while loading shared libraries: ?: cannot open shared object file: No such file or directory

configure:3562: $? = 1

configure:3600: result: no

然后就可以去分析，为何出错了。

6.此处是直接运行：/bin/../lib/gcc/i686-pc-cygwin/4.7.3/cc1.exe -quiet -v -I /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -I /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -iprefix /bin/../lib/gcc/i686-pc-cygwin/4.7.3/ -D__CYGWIN32__ -D__CYGWIN__ -Dunix -D__unix__ -D__unix -idirafter /usr/lib/../include/w32api -idirafter ../../include/w32api conftest.c -quiet -dumpbase conftest.c -mtune=generic -march=i686 -auxbase conftest -O2 -version -o /tmp/ccldAXzD.s

而出错的：/usr/lib/gcc/i686-pc-cygwin/4.7.3/cc1.exe: error while loading shared libraries: ?: cannot open shared object file: No such file or directory

然后去用：

/bin/../lib/gcc/i686-pc-cygwin/4.7.3/cc1.exe –help

去看看当前所支持的功能和参数：CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$ /bin/../lib/gcc/i686-pc-cygwin/4.7.3/cc1.exe --help

The following options are specific to just the language Ada:

None found. Use --help=Ada to show *all* the options supported by the Ada front-end

The following options are specific to just the language AdaWhy:

None found. Use --help=AdaWhy to show *all* the options supported by the AdaWhy front-end

The following options are specific to just the language C:

None found. Use --help=C to show *all* the options supported by the C front-end

The following options are specific to just the language C++:

None found. Use --help=C++ to show *all* the options supported by the C++ front-end

The following options are specific to just the language Fortran:

-J

-Waliasing

-Walign-commons

-Wampersand

-Warray-temporaries

-Wcharacter-truncation

-Wconversion-extra

-Wfunction-elimination

-Wimplicit-interface

-Wimplicit-procedure

-Wintrinsic-shadow

-Wintrinsics-std

-Wline-truncation

-Wreal-q-constant

-Wsurprising

-Wtabs

-Wunderflow

-Wunused-dummy-argument

-cpp

-faggressive-function-elimination

-falign-commons

-fall-intrinsics

-fautomatic

-fbackslash

-fbacktrace

-fblas-matmul-limit=

-fcheck-array-temporaries

-fcheck=[...]

-fcoarray=[...]

-fconvert=big-endian

-fconvert=little-endian

-fconvert=native

-fconvert=swap

-fcray-pointer

-fd-lines-as-code

-fd-lines-as-comments

-fdefault-double-8

-fdefault-integer-8

-fdefault-real-8

-fdollar-ok

-fdump-core

-fdump-fortran-optimized

-fdump-fortran-original

-fdump-parse-tree

-fexternal-blas

-ff2c

-ffixed-form

-ffixed-line-length-

-ffixed-line-length-none

-ffpe-trap=[...]

-ffree-form

-ffree-line-length-

-ffree-line-length-none

-ffrontend-optimize

-fimplicit-none

-finit-character=

-finit-integer=

-finit-local-zero

-finit-logical=

-finit-real=

-finteger-4-integer-8

-fintrinsic-modules-path

-fmax-array-constructor=

-fmax-identifier-length=

-fmax-stack-var-size=

-fmax-subrecord-length=

-fmodule-private

-fpack-derived

-fprotect-parens

-frange-check

-freal-4-real-10

-freal-4-real-16

-freal-4-real-8

-freal-8-real-10

-freal-8-real-16

-freal-8-real-4

-frealloc-lhs

-frecord-marker=4

-frecord-marker=8

-frecursive

-frepack-arrays

-fsecond-underscore

-fsign-zero

-fstack-arrays

-funderscoring

-fwhole-file

-nocpp

-static-libgfortran

-std=f2003

-std=f2008

-std=f2008ts

-std=f95

-std=gnu

-std=legacy

The following options are specific to just the language Go:

-fgo-check-divide-overflow [enabled]

-fgo-check-divide-zero [enabled]

-fgo-dump-

-fgo-optimize-

-fgo-pkgpath=

-fgo-prefix=

-fgo-relative-import-path=

-frequire-return-statement [enabled]

The following options are specific to just the language Java:

-Wextraneous-semicolon [disabled]

-Wout-of-date [enabled]

-Wredundant-modifiers [disabled]

-Wunused [disabled]

-Wunused-label [enabled]

--CLASSPATH

-fassert [enabled]

--bootclasspath=

-fbootstrap-classes [disabled]

-fcheck-references [disabled]

--classpath=

-femit-class-file [disabled]

-femit-class-files [disabled]

--encoding=

--extdirs=

-ffilelist-file [disabled]

-fforce-classes-archive-check [disabled]

-fhash-synchronization [disabled]

-findirect-classes [enabled]

-findirect-dispatch [disabled]

-finline-functions [disabled]

-fjni [disabled]

-foptimize-static-class-initialization [disabled]

-freduced-reflection [disabled]

-fsource=

-fstore-check [enabled]

-ftarget=

-fuse-atomic-builtins [disabled]

-fuse-boehm-gc [disabled]

-fuse-divide-subroutine [enabled]

-version [disabled]

The following options are specific to just the language LTO:

-fltrans [disabled]

-fltrans-output-list=

-fresolution=

-fwpa [disabled]

The following options are specific to just the language ObjC:

None found. Use --help=ObjC to show *all* the options supported by the ObjC front-end

The following options are specific to just the language ObjC++:

-fobjc-call-cxx-cdtors [disabled]

The following options are language-related:

-A=

-C

-CC

-D[=]

-F

-H

-I

-M

-MD

-MF

-MG

-MM

-MMD

-MP

-MQ

-MT

-P

-U

-Wabi [disabled]

-Waddress [disabled]

-Wall

-Wassign-intercept [disabled]

-Wbad-function-cast [disabled]

-Wbuiltin-macro-redefined

-Wc++-compat [disabled]

-Wc++0x-compat [disabled]

-Wc++11-compat

-Wcast-qual [disabled]

-Wchar-subscripts [disabled]

-Wclobbered [enabled]

-Wcomment

-Wcomments

-Wconversion [disabled]

-Wconversion-null [enabled]

-Wctor-dtor-privacy [disabled]

-Wdeclaration-after-statement [disabled]

-Wdelete-non-virtual-dtor [disabled]

-Wdeprecated [enabled]

-Wdiv-by-zero [enabled]

-Wdouble-promotion [disabled]

-Weffc++ [disabled]

-Wempty-body [enabled]

-Wendif-labels

-Wenum-compare [enabled]

-Werror [disabled]

-Werror-implicit-function-declaration

-Wfloat-equal [disabled]

-Wformat

-Wformat-contains-nul [disabled]

-Wformat-extra-args [disabled]

-Wformat-nonliteral [disabled]

-Wformat-security [disabled]

-Wformat-y2k [disabled]

-Wformat-zero-length [disabled]

-Wignored-qualifiers [enabled]

-Wimplicit [enabled]

-Wimplicit-function-declaration [enabled]

-Wimplicit-int [enabled]

-Winit-self [disabled]

-Wint-to-pointer-cast [enabled]

-Winvalid-offsetof [enabled]

-Winvalid-pch

-Wjump-misses-init [enabled]

-Wlogical-op [disabled]

-Wlong-long [enabled]

-Wmain [enabled]

-Wmissing-braces [disabled]

-Wmissing-declarations [disabled]

-Wmissing-field-initializers [enabled]

-Wmissing-format-attribute [disabled]

-Wmissing-include-dirs

-Wmissing-parameter-type [enabled]

-Wmissing-prototypes [disabled]

-Wmudflap [enabled]

-Wmultichar

-Wnarrowing [enabled]

-Wnested-externs [disabled]

-Wnoexcept [disabled]

-Wnon-template-friend [enabled]

-Wnon-virtual-dtor [disabled]

-Wnonnull [disabled]

-Wnormalized=

-Wold-style-cast [disabled]

-Wold-style-declaration [enabled]

-Wold-style-definition [disabled]

-Woverlength-strings [enabled]

-Woverloaded-virtual [disabled]

-Woverride-init [enabled]

-Wpacked-bitfield-compat [enabled]

-Wparentheses [disabled]

-Wpmf-conversions [enabled]

-Wpointer-arith [disabled]

-Wpointer-sign [enabled]

-Wpointer-to-int-cast [enabled]

-Wpragmas [enabled]

-Wproperty-assign-default [enabled]

-Wprotocol [enabled]

-Wredundant-decls [disabled]

-Wreorder [disabled]

-Wreturn-type [disabled]

-Wselector [disabled]

-Wsequence-point [disabled]

-Wsign-compare [enabled]

-Wsign-conversion [enabled]

-Wsign-promo [disabled]

-Wstrict-null-sentinel [disabled]

-Wstrict-prototypes [disabled]

-Wstrict-selector-match [disabled]

-Wsync-nand [enabled]

-Wsynth [disabled]

-Wsystem-headers [disabled]

-Wtraditional [disabled]

-Wtraditional-conversion [disabled]

-Wtrigraphs

-Wundeclared-selector [disabled]

-Wundef

-Wunknown-pragmas

-Wunsuffixed-float-constants [disabled]

-Wunused-local-typedefs [disabled]

-Wunused-macros

-Wunused-result [enabled]

-Wvariadic-macros

-Wvla [enabled]

-Wvolatile-register-var [disabled]

-Wwrite-strings [disabled]

-Wzero-as-null-pointer-constant [disabled]

-ansi

-d

-fRTS=

-faccess-control [enabled]

-fallow-parameterless-variadic-functions [disabled]

-falt-external-templates

-fasm [enabled]

-fbuiltin [enabled]

-fcheck-new [disabled]

-fcond-mismatch

-fconserve-space [disabled]

-fconst-string-class=

-fconstexpr-depth= 0x200

-fdebug-cpp

-fdeduce-init-list [disabled]

-fdefault-inline

-fdirectives-only

-fdollars-in-identifiers

-femit-struct-debug-baseonly

-femit-struct-debug-detailed=

-femit-struct-debug-reduced

-fenforce-eh-specs [enabled]

-fexec-charset=

-fextended-identifiers

-ffor-scope [enabled]

-ffreestanding

-ffriend-injection [disabled]

-fgnu-keywords [enabled]

-fgnu-runtime [enabled]

-fgnu89-inline [enabled]

-fhosted

-fhuge-objects

-fimplement-inlines [enabled]

-fimplicit-inline-templates [enabled]

-fimplicit-templates [enabled]

-finput-charset=

-fkeep-inline-dllexport [enabled]

-flax-vector-conversions [disabled]

-fms-extensions [disabled]

-fmudflap [disabled]

-fmudflapir [disabled]

-fmudflapth [disabled]

-fnext-runtime [disabled]

-fnil-receivers [enabled]

-fnothrow-opt [disabled]

-fobjc-abi-version= 0

-fobjc-direct-dispatch [disabled]

-fobjc-exceptions [disabled]

-fobjc-gc [disabled]

-fobjc-nilcheck [disabled]

-fobjc-sjlj-exceptions [enabled]

-fobjc-std=objc1 [disabled]

-fopenmp [disabled]

-foperator-names

-foptional-diags

-fpch-preprocess

-fpermissive

-fplan9-extensions [disabled]

-fpreprocessed

-fpretty-templates [enabled]

-freplace-objc-classes [disabled]

-frepo

-frtti [enabled]

-fshort-double [disabled]

-fshort-enums [enabled]

-fshort-wchar [disabled]

-fsigned-bitfields [enabled]

-fsigned-char [enabled]

-fstats [disabled]

-fstrict-enums [disabled]

-ftabstop=

-ftemplate-depth=

-fno-threadsafe-statics [enabled]

-ftrack-macro-expansion=

-funsigned-bitfields [disabled]

-funsigned-char [disabled]

-fuse-cxa-atexit [disabled]

-fuse-cxa-get-exception-ptr [enabled]

-fvisibility-inlines-hidden

-fvisibility-ms-compat [disabled]

-fvtable-gc

-fvtable-thunks

-fweak [enabled]

-fwide-exec-charset=

-fworking-directory [enabled]

-fxref

-fzero-link [disabled]

-gen-decls [disabled]

-gnat

-gnatO

-idirafter

-imacros

-imultilib

-include

-iprefix

-iquote

-isysroot

-isystem

-iwithprefix

-iwithprefixbefore

-nostdinc

-nostdinc++

-nostdlib

-o

-pedantic [disabled]

-pedantic-errors [disabled]

-print-objc-runtime-info

-remap

-std=c++03

-std=c++0x

-std=c++11

-std=c++98

-std=c11

-std=c1x

-std=c89

-std=c90

-std=c99

-std=c9x

-std=gnu++03

-std=gnu++0x

-std=gnu++11

-std=gnu++98

-std=gnu11

-std=gnu1x

-std=gnu89

-std=gnu90

-std=gnu99

-std=gnu9x

-std=iso9899:1990

-std=iso9899:199409

-std=iso9899:1999

-std=iso9899:199x

-std=iso9899:2011

-traditional-cpp

-trigraphs

-undef [disabled]

-v [disabled]

-w [disabled]

The --param option recognizes the following as parameters:

predictable-branch-outcome Maximal estimated outcome of branch considered

predictable

max-inline-insns-single The maximum number of instructions in a single

function eligible for inlining

max-inline-insns-auto The maximum number of instructions when

automatically inlining

max-inline-insns-recursive The maximum number of instructions inline

function can grow to via recursive inlining

max-inline-insns-recursive-auto The maximum number of instructions non-inline

function can grow to via recursive inlining

max-inline-recursive-depth The maximum depth of recursive inlining for

inline functions

max-inline-recursive-depth-auto The maximum depth of recursive inlining for

non-inline functions

min-inline-recursive-probability Inline recursively only when the probability

of call being executed exceeds the parameter

max-early-inliner-iterations The maximum number of nested indirect inlining

performed by early inliner

comdat-sharing-probability Probability that COMDAT function will be shared

with different compilation unit

partial-inlining-entry-probability Maximum probability of the entry BB of

split region (in percent relative to entry BB of

the function) to make partial inlining happen

max-variable-expansions-in-unroller If -fvariable-expansion-in-unroller is

used, the maximum number of times that an

individual variable will be expanded during loop

unrolling

min-vect-loop-bound If -ftree-vectorize is used, the minimal loop

bound of a loop to be considered for vectorization

max-delay-slot-insn-search The maximum number of instructions to consider to

fill a delay slot

max-delay-slot-live-search The maximum number of instructions to consider to

find accurate live register information

max-pending-list-length The maximum length of scheduling's pending

operations list

max-modulo-backtrack-attempts The maximum number of backtrack attempts the

scheduler should make when modulo scheduling a

loop

large-function-insns The size of function body to be considered large

large-function-growth Maximal growth due to inlining of large function

(in percent)

large-unit-insns The size of translation unit to be considered

large

inline-unit-growth How much can given compilation unit grow because

of the inlining (in percent)

ipcp-unit-growth How much can given compilation unit grow because

of the interprocedural constant propagation (in

percent)

early-inlining-insns Maximal estimated growth of function body caused

by early inlining of single call

large-stack-frame The size of stack frame to be considered large

large-stack-frame-growth Maximal stack frame growth due to inlining (in

percent)

max-gcse-memory The maximum amount of memory to be allocated by

GCSE

max-gcse-insertion-ratio The maximum ratio of insertions to deletions of

expressions in GCSE

gcse-after-reload-partial-fraction The threshold ratio for performing partial

redundancy elimination after reload

gcse-after-reload-critical-fraction The threshold ratio of critical edges

execution count that permit performing redundancy

elimination after reload

gcse-cost-distance-ratio Scaling factor in calculation of maximum distance

an expression can be moved by GCSE optimizations

gcse-unrestricted-cost Cost at which GCSE optimizations will not

constraint the distance an expression can travel

max-hoist-depth Maximum depth of search in the dominator tree for

expressions to hoist

max-unrolled-insns The maximum number of instructions to consider to

unroll in a loop

max-average-unrolled-insns The maximum number of instructions to consider to

unroll in a loop on average

max-unroll-times The maximum number of unrollings of a single loop

max-peeled-insns The maximum number of insns of a peeled loop

max-peel-times The maximum number of peelings of a single loop

max-completely-peeled-insns The maximum number of insns of a completely

peeled loop

max-completely-peel-times The maximum number of peelings of a single loop

that is peeled completely

max-once-peeled-insns The maximum number of insns of a peeled loop that

rolls only once

max-completely-peel-loop-nest-depth The maximum depth of a loop nest we

completely peel

max-unswitch-insns The maximum number of insns of an unswitched loop

max-unswitch-level The maximum number of unswitchings in a single

loop

max-iterations-to-track Bound on the number of iterations the brute force

# of iterations analysis algorithm evaluates

max-iterations-computation-cost Bound on the cost of an expression to compute

the number of iterations

sms-max-ii-factor A factor for tuning the upper bound that swing

modulo scheduler uses for scheduling a loop

sms-min-sc The minimum value of stage count that swing

modulo scheduler will generate.

sms-dfa-history The number of cycles the swing modulo scheduler

considers when checking conflicts using DFA

sms-loop-average-count-threshold A threshold on the average loop count

considered by the swing modulo scheduler

hot-bb-count-fraction Select fraction of the maximal count of

repetitions of basic block in program given basic

block needs to have to be considered hot

hot-bb-frequency-fraction Select fraction of the maximal frequency of

executions of basic block in function given basic

block needs to have to be considered hot

align-threshold Select fraction of the maximal frequency of

executions of basic block in function given basic

block get alignment

align-loop-iterations Loops iterating at least selected number of

iterations will get loop alignement.

max-predicted-iterations The maximum number of loop iterations we predict

statically

tracer-dynamic-coverage-feedback The percentage of function, weighted by

execution frequency, that must be covered by

trace formation. Used when profile feedback is

available

tracer-dynamic-coverage The percentage of function, weighted by execution

frequency, that must be covered by trace

formation. Used when profile feedback is not

available

tracer-max-code-growth Maximal code growth caused by tail duplication

(in percent)

tracer-min-branch-ratio Stop reverse growth if the reverse probability of

best edge is less than this threshold (in percent)

tracer-min-branch-probability-feedback Stop forward growth if the probability

of best edge is less than this threshold (in

percent). Used when profile feedback is available

tracer-min-branch-probability Stop forward growth if the probability of best

edge is less than this threshold (in percent).

Used when profile feedback is not available

max-crossjump-edges The maximum number of incoming edges to consider

for crossjumping

min-crossjump-insns The minimum number of matching instructions to

consider for crossjumping

max-grow-copy-bb-insns The maximum expansion factor when copying basic

blocks

max-goto-duplication-insns The maximum number of insns to duplicate when

unfactoring computed gotos

max-cse-path-length The maximum length of path considered in cse

max-cse-insns The maximum instructions CSE process before

flushing

lim-expensive The minimum cost of an expensive expression in

the loop invariant motion

iv-consider-all-candidates-bound Bound on number of candidates below that all

candidates are considered in iv optimizations

iv-max-considered-uses Bound on number of iv uses in loop optimized in

iv optimizations

iv-always-prune-cand-set-bound If number of candidates in the set is smaller,

we always try to remove unused ivs during its

optimization

scev-max-expr-size Bound on size of expressions used in the scalar

evolutions analyzer

scev-max-expr-complexity Bound on the complexity of the expressions in the

scalar evolutions analyzer

omega-max-vars Bound on the number of variables in Omega

constraint systems

omega-max-geqs Bound on the number of inequalities in Omega

constraint systems

omega-max-eqs Bound on the number of equalities in Omega

constraint systems

omega-max-wild-cards Bound on the number of wild cards in Omega

constraint systems

omega-hash-table-size Bound on the size of the hash table in Omega

constraint systems

omega-max-keys Bound on the number of keys in Omega constraint

systems

omega-eliminate-redundant-constraints When set to 1, use expensive methods to

eliminate all redundant constraints

vect-max-version-for-alignment-checks Bound on number of runtime checks

inserted by the vectorizer's loop versioning for

alignment check

vect-max-version-for-alias-checks Bound on number of runtime checks inserted

by the vectorizer's loop versioning for alias

check

max-cselib-memory-locations The maximum memory locations recorded by cselib

ggc-min-expand Minimum heap expansion to trigger garbage

collection, as a percentage of the total size of

the heap

ggc-min-heapsize Minimum heap size before we start collecting

garbage, in kilobytes

max-reload-search-insns The maximum number of instructions to search

backward when looking for equivalent reload

sink-frequency-threshold Target block's relative execution frequency (as a

percentage) required to sink a statement

max-sched-region-blocks The maximum number of blocks in a region to be

considered for interblock scheduling

max-sched-region-insns The maximum number of insns in a region to be

considered for interblock scheduling

max-pipeline-region-blocks The maximum number of blocks in a region to be

considered for interblock scheduling

max-pipeline-region-insns The maximum number of insns in a region to be

considered for interblock scheduling

min-spec-prob The minimum probability of reaching a source

block for interblock speculative scheduling

max-sched-extend-regions-iters The maximum number of iterations through CFG

to extend regions

max-sched-insn-conflict-delay The maximum conflict delay for an insn to be

considered for speculative motion

sched-spec-prob-cutoff The minimal probability of speculation success

(in percents), so that speculative insn will be

scheduled.

selsched-max-lookahead The maximum size of the lookahead window of

selective scheduling

selsched-max-sched-times Maximum number of times that an insn could be

scheduled

selsched-insns-to-rename Maximum number of instructions in the ready list

that are considered eligible for renaming

sched-mem-true-dep-cost Minimal distance between possibly conflicting

store and load

max-last-value-rtl The maximum number of RTL nodes that can be

recorded as combiner's last value

integer-share-limit The upper bound for sharing integer constants

min-virtual-mappings Minimum number of virtual mappings to consider

switching to full virtual renames

virtual-mappings-ratio Ratio between virtual mappings and virtual

symbols to do full virtual renames

ssp-buffer-size The lower bound for a buffer to be considered for

stack smashing protection

max-jump-thread-duplication-stmts Maximum number of statements allowed in a

block that needs to be duplicated when threading

jumps

max-fields-for-field-sensitive Maximum number of fields in a structure before

pointer analysis treats the structure as a single

variable

max-sched-ready-insns The maximum number of instructions ready to be

issued to be considered by the scheduler during

the first scheduling pass

max-dse-active-local-stores Maximum number of active local stores in RTL dead

store elimination

prefetch-latency The number of insns executed before prefetch is

completed

simultaneous-prefetches The number of prefetches that can run at the same

time

l1-cache-size The size of L1 cache

l1-cache-line-size The size of L1 cache line

l2-cache-size The size of L2 cache

use-canonical-types Whether to use canonical types

max-partial-antic-length Maximum length of partial antic set when

performing tree pre optimization

sccvn-max-scc-size Maximum size of a SCC before SCCVN stops

processing a function

ira-max-loops-num Max loops number for regional RA

ira-max-conflict-table-size Max size of conflict table in MB

ira-loop-reserved-regs The number of registers in each class kept unused

by loop invariant motion

switch-conversion-max-branch-ratio The maximum ratio between array size and

switch branches for a switch conversion to take

place

loop-block-tile-size size of tiles for loop blocking

graphite-max-nb-scop-params maximum number of parameters in a SCoP

graphite-max-bbs-per-function maximum number of basic blocks per function to

be analyzed by Graphite

loop-max-datarefs-for-datadeps Maximum number of datarefs in loop for

building loop data dependencies

loop-invariant-max-bbs-in-loop Max basic blocks number in loop for loop

invariant motion

slp-max-insns-in-bb Maximum number of instructions in basic block to

be considered for SLP vectorization

min-insn-to-prefetch-ratio Min. ratio of insns to prefetches to enable

prefetching for a loop with an unknown trip count

prefetch-min-insn-to-mem-ratio Min. ratio of insns to mem ops to enable

prefetching in a loop

max-vartrack-size Max. size of var tracking hash tables

max-vartrack-expr-depth Max. recursion depth for expanding var tracking

expressions

min-nondebug-insn-uid The minimum UID to be used for a nondebug insn

ipa-sra-ptr-growth-factor Maximum allowed growth of size of new parameters

ipa-sra replaces a pointer to an aggregate with

tm-max-aggregate-size Size in bytes after which thread-local aggregates

should be instrumented with the logging functions

instead of save/restore pairs

ipa-cp-value-list-size Maximum size of a list of values associated with

each parameter for interprocedural constant

propagation

ipa-cp-eval-threshold Threshold ipa-cp opportunity evaluation that is

still considered beneficial to clone.

lto-partitions Number of partitions the program should be split

to

lto-min-partition Minimal size of a partition for LTO (in estimated

instructions)

cxx-max-namespaces-for-diagnostic-help Maximum number of namespaces to search

for alternatives when name lookup fails

max-stores-to-sink Maximum number of conditional store pairs that

can be sunk

case-values-threshold The smallest number of different values for which

it is best to use a jump-table instead of a tree

of conditional branches, if 0, use the default

for the machine

allow-load-data-races Allow new data races on loads to be introduced

allow-store-data-races Allow new data races on stores to be introduced

allow-packed-load-data-races Allow new data races on packed data loads to be

introduced

allow-packed-store-data-races Allow new data races on packed data stores to

be introduced

tree-reassoc-width Set the maximum number of instructions executed

in parallel in reassociated tree. If 0, use the

target dependent heuristic.

max-tail-merge-comparisons Maximum amount of similar bbs to compare a bb with

max-tail-merge-iterations Maximum amount of iterations of the pass over a

function

max-tracked-strlens Maximum number of strings for which strlen

optimization pass will track string lengths

The following options control compiler warning messages:

-W

-Waggregate-return [disabled]

-Warray-bounds [disabled]

-Wattributes [enabled]

-Wcast-align [disabled]

-Wcoverage-mismatch [enabled]

-Wcpp [enabled]

-Wdeprecated-declarations [enabled]

-Wdisabled-optimization [disabled]

-Wextra [disabled]

-Wfree-nonheap-object [enabled]

-Winline [disabled]

-Winvalid-memory-model [enabled]

-Wlarger-than=

-Wmaybe-uninitialized [disabled]

-Wmissing-noreturn [disabled]

-Woverflow [enabled]

-Wpacked [disabled]

-Wpadded [disabled]

-Wshadow [disabled]

-Wstack-protector [disabled]

-Wstack-usage= 0xffffffff

-Wstrict-aliasing

-Wstrict-aliasing= 0xffffffff

-Wstrict-overflow

-Wstrict-overflow= 0xffffffff

-Wsuggest-attribute=const [disabled]

-Wsuggest-attribute=noreturn [disabled]

-Wsuggest-attribute=pure [disabled]

-Wswitch [disabled]

-Wswitch-default [disabled]

-Wswitch-enum [disabled]

-Wtrampolines [disabled]

-Wtype-limits [enabled]

-Wuninitialized [enabled]

-Wunsafe-loop-optimizations [disabled]

-Wunused-but-set-parameter [enabled]

-Wunused-but-set-variable [enabled]

-Wunused-function [enabled]

-Wunused-parameter [enabled]

-Wunused-value [enabled]

-Wunused-variable [enabled]

-Wvector-operation-performance [disabled]

The following options control optimizations:

-O

-Ofast

-Os

-falign-functions [disabled]

-falign-jumps [disabled]

-falign-labels [disabled]

-falign-loops [disabled]

-fasynchronous-unwind-tables [enabled]

-fbranch-count-reg [enabled]

-fbranch-probabilities [disabled]

-fbranch-target-load-optimize [disabled]

-fbranch-target-load-optimize2 [disabled]

-fbtr-bb-exclusive [disabled]

-fcaller-saves [disabled]

-fcombine-stack-adjustments [disabled]

-fcommon [enabled]

-fcompare-elim [disabled]

-fconserve-stack [disabled]

-fcprop-registers [disabled]

-fcrossjumping [disabled]

-fcse-follow-jumps [disabled]

-fcx-fortran-rules [disabled]

-fcx-limited-range [disabled]

-fdata-sections [disabled]

-fdce [enabled]

-fdefer-pop [disabled]

-fdelayed-branch [disabled]

-fdelete-null-pointer-checks [enabled]

-fdevirtualize [disabled]

-fdse [enabled]

-fearly-inlining [enabled]

-fexceptions [disabled]

-fexpensive-optimizations [disabled]

-ffinite-math-only [disabled]

-ffloat-store [disabled]

-fforward-propagate [disabled]

-fgcse [disabled]

-fgcse-after-reload [disabled]

-fgcse-las [disabled]

-fgcse-lm [enabled]

-fgcse-sm [disabled]

-fgraphite-identity [disabled]

-fguess-branch-probability [disabled]

-fif-conversion [disabled]

-fif-conversion2 [disabled]

-finline-atomics [enabled]

-finline-functions-called-once [disabled]

-finline-small-functions [disabled]

-fipa-cp [disabled]

-fipa-cp-clone [disabled]

-fipa-matrix-reorg [disabled]

-fipa-profile [disabled]

-fipa-pta [disabled]

-fipa-pure-const [disabled]

-fipa-reference [disabled]

-fipa-sra [disabled]

-fivopts [enabled]

-fjump-tables [enabled]

-floop-block [disabled]

-floop-flatten [disabled]

-floop-interchange [disabled]

-floop-parallelize-all [disabled]

-floop-strip-mine [disabled]

-fmath-errno [enabled]

-fmerge-all-constants [disabled]

-fmerge-constants [disabled]

-fmodulo-sched [disabled]

-fmove-loop-invariants [enabled]

-fnon-call-exceptions [disabled]

-fomit-frame-pointer [disabled]

-foptimize-register-move [disabled]

-foptimize-sibling-calls [disabled]

-foptimize-strlen [disabled]

-fpack-struct [disabled]

-fpack-struct=

-fpeel-loops [disabled]

-fpeephole [enabled]

-fpeephole2 [disabled]

-fpredictive-commoning [disabled]

-fprefetch-loop-arrays [enabled]

-freg-struct-return [disabled]

-fregmove [disabled]

-frename-registers [enabled]

-freorder-blocks [disabled]

-freorder-blocks-and-partition [disabled]

-freorder-functions [disabled]

-frerun-cse-after-loop [disabled]

-freschedule-modulo-scheduled-loops [disabled]

-frounding-math [disabled]

-fsched-critical-path-heuristic [enabled]

-fsched-dep-count-heuristic [enabled]

-fsched-group-heuristic [enabled]

-fsched-interblock [enabled]

-fsched-last-insn-heuristic [enabled]

-fsched-pressure [disabled]

-fsched-rank-heuristic [enabled]

-fsched-spec [enabled]

-fsched-spec-insn-heuristic [enabled]

-fsched-spec-load [disabled]

-fsched-spec-load-dangerous [disabled]

-fsched-stalled-insns [disabled]

-fsched-stalled-insns-dep [enabled]

-fsched2-use-superblocks [disabled]

-fschedule-insns [disabled]

-fschedule-insns2 [disabled]

-fsection-anchors [disabled]

-fsel-sched-pipelining [disabled]

-fsel-sched-pipelining-outer-loops [disabled]

-fsel-sched-reschedule-pipelined [disabled]

-fselective-scheduling [disabled]

-fselective-scheduling2 [disabled]

-fset-stack-executable [enabled]

-fshrink-wrap [disabled]

-fsignaling-nans [disabled]

-fsigned-zeros [enabled]

-fsingle-precision-constant [disabled]

-fsplit-ivs-in-unroller [enabled]

-fsplit-wide-types [disabled]

-fstrict-aliasing [disabled]

-fthread-jumps [disabled]

-ftoplevel-reorder [enabled]

-ftrapping-math [enabled]

-ftrapv [disabled]

-ftree-bit-ccp [disabled]

-ftree-builtin-call-dce [disabled]

-ftree-ccp [disabled]

-ftree-ch [disabled]

-ftree-copy-prop [disabled]

-ftree-copyrename [disabled]

-ftree-cselim [enabled]

-ftree-dce [disabled]

-ftree-dominator-opts [disabled]

-ftree-dse [disabled]

-ftree-forwprop [enabled]

-ftree-fre [disabled]

-ftree-loop-distribute-patterns [disabled]

-ftree-loop-distribution [disabled]

-ftree-loop-if-convert [enabled]

-ftree-loop-if-convert-stores [disabled]

-ftree-loop-im [enabled]

-ftree-loop-ivcanon [enabled]

-ftree-loop-optimize [enabled]

-ftree-lrs [disabled]

-ftree-phiprop [enabled]

-ftree-pre [disabled]

-ftree-pta [enabled]

-ftree-reassoc [enabled]

-ftree-scev-cprop [enabled]

-ftree-sink [disabled]

-ftree-slp-vectorize [enabled]

-ftree-sra [disabled]

-ftree-switch-conversion [disabled]

-ftree-tail-merge [disabled]

-ftree-ter [disabled]

-ftree-vect-loop-version [enabled]

-ftree-vectorize [disabled]

-ftree-vrp [disabled]

-funit-at-a-time [enabled]

-funroll-all-loops [disabled]

-funroll-loops [disabled]

-funsafe-loop-optimizations [disabled]

-funsafe-math-optimizations [disabled]

-funswitch-loops [disabled]

-funwind-tables [disabled]

-fvar-tracking [enabled]

-fvar-tracking-assignments [enabled]

-fvar-tracking-assignments-toggle [disabled]

-fvar-tracking-uninit [disabled]

-fvariable-expansion-in-unroller [disabled]

-fvect-cost-model [enabled]

-fvpt [disabled]

-fweb [enabled]

-fwhole-program [disabled]

-fwrapv [disabled]

The following options are target specific:

-m128bit-long-double [disabled]

-m32 [enabled]

-m3dnow [disabled]

-m64 [disabled]

-m80387 [enabled]

-m8bit-idiv [disabled]

-m96bit-long-double [enabled]

-mabi= sysv

-mabm [disabled]

-maccumulate-outgoing-args [disabled]

-maes [disabled]

-malign-double [enabled]

-malign-functions= 0

-malign-jumps= 0

-malign-loops= 0

-malign-stringops [enabled]

-march=

-masm= att

-mavx [disabled]

-mavx2 [disabled]

-mavx256-split-unaligned-load [disabled]

-mavx256-split-unaligned-store [disabled]

-mbmi [disabled]

-mbmi2 [disabled]

-mbranch-cost= 0

-mcld [disabled]

-mcmodel= 32

-mconsole [disabled]

-mcrc32 [disabled]

-mcx16 [disabled]

-mdispatch-scheduler [disabled]

-mdll [disabled]

-mf16c [disabled]

-mfancy-math-387 [enabled]

-mfentry [enabled]

-mfma [disabled]

-mfma4 [disabled]

-mforce-drap [disabled]

-mfp-ret-in-387 [enabled]

-mfpmath= 387

-mfsgsbase [disabled]

-mhard-float [enabled]

-mieee-fp [enabled]

-mincoming-stack-boundary= 0

-minline-all-stringops [disabled]

-minline-stringops-dynamically [disabled]

-mlarge-data-threshold= 0x10000

-mlwp [disabled]

-mlzcnt [disabled]

-mmmx [disabled]

-mmovbe [disabled]

-mms-bitfields [disabled]

-mno-sse4 [enabled]

-mnop-fun-dllimport [disabled]

-momit-leaf-frame-pointer [disabled]

-mpc32 [disabled]

-mpc64 [disabled]

-mpc80 [disabled]

-mpclmul [disabled]

-mpe-aligned-commons [enabled]

-mpopcnt [disabled]

-mprefer-avx128 [disabled]

-mpreferred-stack-boundary= 0

-mpush-args [enabled]

-mrdrnd [disabled]

-mrecip [disabled]

-mrecip=

-mred-zone [enabled]

-mregparm= 0

-mrtd [disabled]

-msahf [disabled]

-msoft-float [disabled]

-msse [disabled]

-msse2 [disabled]

-msse2avx [disabled]

-msse3 [disabled]

-msse4 [disabled]

-msse4.1 [disabled]

-msse4.2 [disabled]

-msse4a [disabled]

-msseregparm [disabled]

-mssse3 [disabled]

-mstack-arg-probe [enabled]

-mstackrealign [enabled]

-mstringop-strategy= [default]

-mtbm [disabled]

-mthreads [disabled]

-mtls-dialect= gnu

-mtls-direct-seg-refs [disabled]

-mtune=

-muse-libstdc-wrappers [disabled]

-mveclibabi= [default]

-mvect8-ret-in-mem [disabled]

-mvzeroupper [disabled]

-mwin32 [disabled]

-mwindows [disabled]

-mx32 [disabled]

-mxop [disabled]

Known assembler dialects (for use with the -masm-dialect= option):

att intel

Known ABIs (for use with the -mabi= option):

ms sysv

Known code models (for use with the -mcmodel= option):

32 kernel large medium small

Valid arguments to -mfpmath=:

387 387+sse 387,sse both sse sse+387 sse,387

Known vectorization library ABIs (for use with the -mveclibabi= option):

acml svml

Valid arguments to -mstringop-strategy=:

byte_loop libcall loop rep_4byte rep_8byte rep_byte unrolled_loop

Known TLS dialects (for use with the -mtls-dialect= option):

gnu gnu2

The following options are language-independent:

--help [enabled]

--help=

--param =

--target-help

-Werror=

-Wfatal-errors [disabled]

-Wframe-larger-than=

-Wunreachable-code

-aux-info [enabled]

-dumpbase [enabled]

-dumpdir

-fPIC [disabled]

-fPIE [disabled]

-fargument-alias

-fargument-noalias

-fargument-noalias-anything

-fargument-noalias-global

-fassociative-math [disabled]

-fauto-inc-dec [enabled]

-fbounds-check [disabled]

-fcall-saved-

-fcall-used-

-fcheck-data-deps [disabled]

-fcompare-debug-second [disabled]

-fcompare-debug[=]

-fcse-skip-blocks

-fdbg-cnt-list

-fdbg-cnt=:[,:,...]

-fdebug-prefix-map=

-fdebug-types-section [enabled]

-fdiagnostics-show-location=[once|every-line]

-fdiagnostics-show-option [enabled]

-fdisable-

-fdump-

-fdump-final-insns=filename

-fdump-go-spec=filename

-fdump-noaddr [disabled]

-fdump-passes [disabled]

-fdump-unnumbered [disabled]

-fdump-unnumbered-links [disabled]

-fdwarf2-cfi-asm [enabled]

-feliminate-dwarf2-dups [disabled]

-feliminate-unused-debug-symbols [disabled]

-feliminate-unused-debug-types [enabled]

-femit-class-debug-always [disabled]

-fenable-

-fexcess-precision=[fast|standard] [default]

-ffat-lto-objects [enabled]

-ffixed-

-fforce-addr

-ffp-contract= fast

-ffunction-cse [enabled]

-ffunction-sections [disabled]

-fgnu-tm [disabled]

-fgraphite [disabled]

-fident [enabled]

-findirect-inlining [disabled]

-finhibit-size-directive [disabled]

-finline [enabled]

-finline-limit=

-finstrument-functions [disabled]

-finstrument-functions-exclude-file-list=

-finstrument-functions-exclude-function-list=

-fipa-struct-reorg

-fira-algorithm= CB

-fira-loop-pressure [disabled]

-fira-region= [default]

-fira-share-save-slots [enabled]

-fira-share-spill-slots [enabled]

-fira-verbose= 0x5

-fkeep-inline-functions [disabled]

-fkeep-static-consts [enabled]

-fleading-underscore [enabled]

-floop-optimize

-flto

-flto-compression-level= 0xffffffff

-flto-partition=1to1 [disabled]

-flto-partition=balanced [disabled]

-flto-partition=none [disabled]

-flto-report [disabled]

-flto=

-fmax-errors= 0

-fmem-report [disabled]

-fmerge-debug-strings [enabled]

-fmessage-length=

-fmodulo-sched-allow-regmoves [disabled]

-fpartial-inlining [disabled]

-fpcc-struct-return [disabled]

-fpic [disabled]

-fpie [disabled]

-fplugin-arg--[=]

-fplugin=

-fpost-ipa-mem-report [disabled]

-fpre-ipa-mem-report [disabled]

-fprofile [disabled]

-fprofile-arcs [disabled]

-fprofile-correction [disabled]

-fprofile-dir=

-fprofile-generate

-fprofile-generate=

-fprofile-use [disabled]

-fprofile-use=

-fprofile-values [disabled]

-frandom-seed=

-freciprocal-math [disabled]

-frecord-gcc-switches [disabled]

-free [disabled]

-frerun-loop-opt

-fsched-stalled-insns-dep=

-fsched-stalled-insns=

-fsched-verbose= 0

-fsched2-use-traces

-fsee

-fshow-column [enabled]

-fsplit-stack [enabled]

-fstack-check

-fstack-check=[no|generic|specific]

-fstack-limit-register=

-fstack-limit-symbol=

-fstack-protector [disabled]

-fstack-protector-all [disabled]

-fstack-usage [disabled]

-fstrength-reduce

-fstrict-overflow [disabled]

-fstrict-volatile-bitfields [enabled]

-fsyntax-only [disabled]

-ftest-coverage [disabled]

-ftime-report [disabled]

-ftls-model=[global-dynamic|local-dynamic|initial-exec|local-exec] global-

dynamic

-ftracer [disabled]

-ftree-loop-linear

-ftree-parallelize-loops= 0x1

-ftree-salias

-ftree-store-ccp

-ftree-store-copy-prop

-ftree-vectorizer-verbose=

-fverbose-asm [disabled]

-fvisibility=[default|internal|hidden|protected] default

-fzee

-fzero-initialized-in-bss [enabled]

-g

-gcoff

-gdwarf- 0x2

-ggdb

-gno-record-gcc-switches [enabled]

-gno-strict-dwarf [disabled]

-grecord-gcc-switches [disabled]

-gstabs

-gstabs+

-gstrict-dwarf [disabled]

-gtoggle [disabled]

-gvms

-gxcoff

-gxcoff+

-imultiarch

-iplugindir=

-p [disabled]

-quiet [disabled]

CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$

然后看看此处一些参数的含义：

(1)-quiet：安静模式

(2)-v：此处加的，详细信息

(3)-I /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -I /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include：两个include路径，还是相同的

(4)-iprefix /bin/../lib/gcc/i686-pc-cygwin/4.7.3/

对应语法是：

-iprefix

然后去看了看对应的路径下有啥：CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$ ls /bin/../lib/gcc/i686-pc-cygwin/4.7.3/

adainclude/ crtend.o include/ libgcc_eh.a libgfortran.a libgomp.spec libssp_nonshared.a

adalib/ crtfastmath.o include-fixed/ libgcc_s.dll.a* libgfortran.dll.a* libobjc.a libstdc++.a

cc1.exe* cyglto_plugin.dll* install-tools/ libgcj.dll.a* libgfortran.spec libobjc.dll.a* libstdc++.dll.a*

cc1obj.exe* ecj1.exe* jc1.exe* libgcj.spec libgfortranbegin.a libquadmath.a libstdc++.dll.a-gdb.py*

cc1plus.exe* f951.exe* jvgenmain.exe* libgcj-noncore.dll.a* libgij.dll.a* libquadmath.dll.a* libsupc++.a

collect2.exe* finclude/ libcaf_single.a libgcj-tools.dll.a* libgomp.a libssp.a lto1.exe*

crtbegin.o gnat1.exe* libgcc.a libgcov.a libgomp.dll.a* libssp.dll.a* lto-wrapper.exe*

(5)-D__CYGWIN32__ -D__CYGWIN__ -Dunix -D__unix__ -D__unix

一堆的define变量

(6)-idirafter /usr/lib/../include/w32api -idirafter ../../include/w32api

两个重复的：

-idirafter /usr/lib/../include/w32api

对应语法：

-idirafter

也去看看对应路径下有啥：CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$ ls /usr/lib/../include/w32api

_bsd_types.h d3d8types.h glui.h msasn1.h propkey.h uastrfnc.h

_cygwin.h d3d9.h gluix.h msber.h propkeydef.h udpmib.h

_dbdao.h d3d9caps.h gpedit.h mscat.h propsys.h uiautomation.h

_mingw.h d3d9types.h gpmgmt.h mschapp.h propvarutil.h uiautomationclient.h

_mingw_dxhelper.h d3dcaps.h guiddef.h msclus.h prsht.h uiautomationcore.h

_mingw_mac.h d3dcommon.h h323priv.h mscoree.h psapi.h uiautomationcoreapi.h

_mingw_print_pop.h d3dcommon.idl hidpi.h msctf.h psdk_inc/ umx.h

_mingw_print_push.h d3dcompiler.h hidsdi.h msctfmonitorapi.h pshpack1.h unknown.h

_mingw_secapi.h d3dhal.h hidusage.h msdadc.h pshpack2.h unknwn.h

_mingw_unicode.h d3drm.h hlguids.h msdaguid.h pshpack4.h urlhist.h

_timeval.h d3drmdef.h hliface.h msdaipp.h pshpack8.h urlmon.h

accctrl.h d3drmobj.h hlink.h msdaipper.h pstore.h usb.h

aclapi.h d3dtypes.h hostinfo.h msdaora.h qedit.h usb100.h

aclui.h d3dvec.inl hstring.h msdaosp.h qedit.idl usb200.h

activation.h d3dx9.h htiface.h msdasc.h qmgr.h usbcamdi.h

activeds.h d3dx9anim.h htiframe.h msdasql.h qnetwork.h usbdi.h

activscp.h d3dx9core.h htmlguid.h msdatsrc.h qnetwork.idl usbioctl.h

adc.h d3dx9effect.h htmlhelp.h msdrm.h qos.h usbiodef.h

adhoc.h d3dx9math.h http.h msdrmdefs.h qos2.h usbrpmif.h

admex.h d3dx9math.inl httpext.h msdshape.h qosname.h usbuser.h

adoctint.h d3dx9mesh.h httpfilt.h msfs.h qospol.h userenv.h

adodef.h d3dx9shader.h httprequestid.h mshtmcid.h qossp.h usp10.h

adogpool.h d3dx9shape.h i_cryptasn1tls.h mshtmdid.h ras.h uuids.h

adoguids.h d3dx9tex.h ia64reg.h mshtmhst.h rasdlg.h uxtheme.h

adoid.h d3dx9xof.h iaccess.h mshtml.h raseapif.h vadefs.h

adoint.h daogetrw.h iadmext.h mshtmlc.h raserror.h vcr.h

adojet.h datapath.h iadmw.h msi.h rassapi.h vdmdbg.h

adomd.h davclnt.h iads.h msidefs.h rasshost.h vds.h

adptif.h dbdaoerr.h icftypes.h msimcntl.h ratings.h vdslun.h

adsdb.h dbdaoid.h icm.h msimcsdk.h rdpencomapi.h verinfo.ver

adserr.h dbdaoint.h icmpapi.h msiquery.h reason.h vfw.h

adshlp.h dbgautoattach.h icmui.dlg msoav.h recguids.h vfwmsgs.h

adsiid.h dbgeng.h icrsint.h msp.h reconcil.h virtdisk.h

adsnms.h dbghelp.h identitycommon.h mspab.h regstr.h vmr9.h

adsprop.h dbgprop.h identitystore.h mspaddr.h rend.h vmr9.idl

adssts.h dbt.h idf.h mspbase.h resapi.h vsadmin.h

adtgen.h dciddi.h idispids.h mspcall.h restartmanager.h vsbackup.h

advpub.h dciman.h iedial.h mspcoll.h richedit.h vsmgmt.h

af_irda.h dcommon.h ieverp.h mspenum.h richole.h vsprov.h

afxres.h dde.h ifdef.h msplog.h rkeysvcc.h vss.h

agtctl.h dde.rh iiis.h mspst.h rnderr.h vsstyle.h

agtctl_i.c ddeml.h iiisext.h mspstrm.h roapi.h vssym32.h

agterr.h ddk/ iimgctx.h mspterm.h routprot.h vswriter.h

agtsvr.h ddraw.h iiscnfg.h mspthrd.h rpc.h w32api.h

agtsvr_i.c ddrawgdi.h iisext_i.c msptrmac.h rpcasync.h wab.h

amaudio.h ddrawi.h iisrsta.h msptrmar.h rpcdce.h wabapi.h

amstream.h ddstream.h iketypes.h msptrmvc.h rpcdcep.h wabcode.h

amstream.idl ddstream.idl ilogobj.hxx msputils.h rpcndr.h wabdefs.h

amvideo.h delayimp.h imagehlp.h msrdc.h rpcnsi.h wabiab.h

amvideo.idl devguid.h ime.h msremote.h rpcnsip.h wabmem.h

apdevpkey.h devicetopology.h imessage.h mssip.h rpcnterr.h wabnot.h

apiset.h devioctl.h imm.h msstkppg.h rpcproxy.h wabtags.h

apisetcconv.h devpkey.h in6addr.h mstask.h rpcsal.h wabutil.h

appmgmt.h devpropdef.h inaddr.h mstcpip.h rpcssl.h wbemads.h

aqadmtyp.h dhcpcsdk.h indexsrv.h msterr.h rrascfg.h wbemcli.h

asptlb.h dhcpsapi.h inetreg.h mswsock.h rtcapi.h wbemdisp.h

atacct.h dhcpssdk.h inetsdk.h msxml.h rtccore.h wbemidl.h

atalkwsh.h dhcpv6csdk.h initguid.h msxml2.h rtcerr.h wbemprov.h

atsmedia.h dhtmldid.h initoid.h msxml2did.h rtinfo.h wbemtran.h

audevcod.h dhtmled.h inputscope.h msxmldid.h rtm.h wcmconfig.h

audioapotypes.h dhtmliid.h inspectable.h mtsadmin.h rtmv2.h wcsplugin.h

audioclient.h digitalv.h intrin.h mtsadmin_i.c rtutils.h wct.h

audioengineendpoint.h dimm.h intshcut.h mtsevents.h sal.h wdsbp.h

audiopolicy.h dinput.h invkprxy.h mtsgrp.h sbe.h wdsclientapi.h

audiosessiontypes.h diskguid.h ioevent.h mtx.h scarddat.h wdspxe.h

austream.h dispatch.h ipexport.h mtxadmin.h scarderr.h wdstci.h

austream.idl dispdib.h iphlpapi.h mtxadmin_i.c scardmgr.h wdstpdi.h

authif.h dispex.h ipifcons.h mtxattr.h scardsrv.h wdstptmgmt.h

authz.h dlcapi.h ipinfoid.h mtxdm.h scardssp.h werapi.h

avifmt.h dlgs.h ipmib.h muiload.h scardssp_i.c wfext.h

avrfsdk.h dls1.h ipmsp.h multimon.h scardssp_p.c wia.h

avrt.h dls2.h iprtrmib.h multinfo.h scesvc.h wiadef.h

azroles.h dmdls.h ipsectypes.h mxdc.h schannel.h wiadevd.h

basetsd.h dmerror.h iptypes.h napenforcementclient.h schedule.h wiavideo.h

basetyps.h dmksctrl.h ipxconst.h naperror.h schemadef.h winable.h

batclass.h dmo.h ipxrip.h napmicrosoftvendorids.h schnlsp.h winapifamily.h

bcrypt.h dmodshow.h ipxrtdef.h napprotocol.h scode.h winbase.h

bdaiface.h dmodshow.idl ipxsap.h naptypes.h scrnsave.h winber.h

bdamedia.h dmoreg.h ipxtfflt.h naputil.h scrptids.h wincodec.h

bdatypes.h dmort.h iscsidsc.h nb30.h sddl.h wincon.h

bh.h dmplugin.h isguids.h ncrypt.h sdkddkver.h wincred.h

bidispl.h dmusbuff.h issper16.h ndattrib.h sdks/ wincrypt.h

bits.h dmusicc.h issperr.h ndfapi.h sdoias.h winddi.h

bits1_5.h dmusicf.h isysmon.h ndhelper.h sdpblb.h winddiui.h

bits2_0.h dmusici.h iwamreg.h ndr64types.h sdperr.h windef.h

bitscfg.h dmusics.h kcom.h ndrtypes.h sec_api/ windns.h

bitsmsg.h docobj.h knownfolders.h netcon.h secext.h windot11.h

blberr.h domdid.h ks.h neterr.h security.h windows.h

bluetoothapis.h downloadmgr.h ksdebug.h netevent.h sens.h windowsx.h

bthdef.h dpaddr.h ksguid.h netioapi.h sensapi.h windowsx.h16

bthsdpdef.h dpfilter.h ksmedia.h netlistmgr.h sensevts.h winefs.h

bugcodes.h dplay.h ksproxy.h netmon.h sensors.h winerror.h

callobj.h dplay8.h ksuuids.h netprov.h sensorsapi.h winevt.h

cardmod.h dplobby.h ktmtypes.h nettypes.h servprov.h wingdi.h

casetup.h dplobby8.h ktmw32.h newapis.h setupapi.h winhttp.h

cchannel.h dpnathlp.h kxia64.h newdev.h sfc.h wininet.h

cderr.h driverspecs.h lm.h nldef.h shappmgr.h winineti.h

cdoex.h dsadmin.h lmaccess.h nmsupp.h shdeprecated.h winioctl.h

cdoex_i.c dsclient.h lmalert.h npapi.h shdispid.h winldap.h

cdoexerr.h dsconf.h lmapibuf.h nsemail.h shellapi.h winnetwk.h

cdoexm.h dsdriver.h lmat.h nspapi.h shfolder.h winnls.h

cdoexm_i.c dsgetdc.h lmaudit.h ntdd1394.h shldisp.h winnls32.h

cdoexstr.h dshow.h lmconfig.h ntdd8042.h shlguid.h winnt.h

cdonts.h dskquota.h lmcons.h ntddbeep.h shlobj.h winnt.rh

cdosys.h dsound.h lmdfs.h ntddcdrm.h shlwapi.h winperf.h

cdosys_i.c dsquery.h lmerr.h ntddcdvd.h shobjidl.h winreg.h

cdosyserr.h dsrole.h lmerrlog.h ntddchgr.h shtypes.h winresrc.h

cdosysstr.h dssec.h lmjoin.h ntdddisk.h simpdata.h winsafer.h

celib.h dtchelp.h lmmsg.h ntddft.h simpdc.h winsatcominterfacei.h

certadm.h dvbsiparser.h lmon.h ntddkbd.h sipbase.h winscard.h

certbase.h dvdevcod.h lmremutl.h ntddmmc.h sisbkup.h winsmcrd.h

certbcli.h dvdmedia.h lmrepl.h ntddmodm.h slerror.h winsnmp.h

certcli.h dvobj.h lmserver.h ntddmou.h slpublic.h winsock.h

certenc.h dwmapi.h lmshare.h ntddndis.h smpab.h winsock2.h

certenroll.h dwrite.h lmsname.h ntddpar.h smpms.h winsplp.h

certexit.h dxdiag.h lmstats.h ntddpsch.h smpxp.h winspool.h

certif.h dxerr8.h lmsvc.h ntddscsi.h smtpguid.h winstring.h

certmod.h dxerr9.h lmuse.h ntddser.h smx.h winsvc.h

certpol.h dxfile.h lmuseflg.h ntddstor.h snmp.h winsxs.h

certreqd.h dxgi.h lmwksta.h ntddtape.h softpub.h winsync.h

certsrv.h dxgi.idl loadperf.h ntddtdi.h specstrings.h winternl.h

certview.h dxgiformat.h locationapi.h ntddvdeo.h sporder.h wintrust.h

cfg.h dxgitype.h lpmapi.h ntddvol.h sql.h winusb.h

cfgmgr32.h dxtmpl.h lzexpand.h ntdef.h sql_1.h winusbio.h

cguid.h dxva.h madcapcl.h ntdsapi.h sqlext.h winuser.h

chanmgr.h dxva2api.h mailmsgprops.h ntdsbcli.h sqloledb.h winuser.rh

cierror.h dxvahd.h manipulations.h ntdsbmsg.h sqltypes.h winver.h

clfs.h eapauthenticatoractiondefine.h mapi.h ntgdi.h sqlucode.h winwlx.h

clfsmgmt.h eapauthenticatortypes.h mapicode.h ntiologc.h srrestoreptapi.h wlanapi.h

clfsmgmtw32.h eaphosterror.h mapidbg.h ntldap.h srv.h wlantypes.h

clfsw32.h eaphostpeerconfigapis.h mapidefs.h ntmsapi.h sspguid.h wmcodecdsp.h

cluadmex.h eaphostpeertypes.h mapiform.h ntmsmli.h sspi.h wmcontainer.h

clusapi.h eapmethodauthenticatorapis.h mapiguid.h ntquery.h sspserr.h wmiatlprov.h

cluscfgguids.h eapmethodpeerapis.h mapihook.h ntsdexts.h sspsidl.h wmistr.h

cluscfgserver.h eapmethodtypes.h mapinls.h ntsecapi.h sti.h wmiutils.h

cluscfgwizard.h eappapis.h mapioid.h ntsecpkg.h stierr.h wnnc.h

cmdtree.h eaptypes.h mapispi.h ntstatus.h stireg.h wownt16.h

cmnquery.h edevdefs.h mapitags.h ntverp.h stllock.h wownt32.h

codecapi.h ehstorapi.h mapiutil.h oaidl.h stm.h wpapi.h

color.dlg elscore.h mapival.h objbase.h storage.h wpapimsg.h

colordlg.h emostore.h mapiwin.h objectarray.h storduid.h wpcapi.h

comadmin.h emostore_i.c mapiwz.h objerror.h storprop.h wpcevent.h

combaseapi.h emptyvc.h mapix.h objidl.h stralign.h wpcrsmsg.h

comcat.h endpointvolume.h mciavi.h objsafe.h strmif.h wpftpmsg.h

comdef.h error.h mcx.h objsel.h strsafe.h wppstmsg.h

comdefsp.h errorrep.h mdbrole.hxx ocidl.h structuredquerycondition.h wpspihlp.h

comip.h errors.h mdcommsg.h ocmm.h subauth.h wptypes.h

commctrl.h esent.h mddefw.h odbcinst.h subsmgr.h wpwizmsg.h

commctrl.rh evcode.h mdhcp.h odbcss.h svcguid.h ws2atm.h

commdlg.h evcoll.h mdmsg.h ole.h svrapi.h ws2bth.h

common.ver eventsys.h mediaerr.h ole2.h t2embapi.h ws2def.h

commoncontrols.h evntcons.h mediaobj.h ole2ver.h tabflicks.h ws2dnet.h

compobj.h evntprov.h mediaobj.idl oleacc.h tapi.h ws2ipdef.h

compstui.h evntrace.h medparam.h oleauto.h tapi3.h ws2spi.h

comsvcs.h evr.h medparam.idl olectl.h tapi3cc.h ws2tcpip.h

comutil.h evr9.h mergemod.h olectlid.h tapi3ds.h wsdapi.h

confpriv.h exchform.h mfapi.h oledb.h tapi3err.h wsdattachment.h

control.h excpt.h mferror.h oledbdep.h tapi3if.h wsdbase.h

corerror.h exdisp.h mfidl.h oledberr.h taskschd.h wsdclient.h

correg.h exdispid.h mfmp2dlna.h oledbguid.h tbs.h wsddisco.h

cpl.h fci.h mfobjects.h oledlg.dlg tcerror.h wsdhost.h

cplext.h fdi.h mfplay.h oledlg.h tcguid.h wsdtypes.h

credssp.h fileextd.h mfreadwrite.h oleidl.h tcpestats.h wsdutil.h

crtdefs.h filehc.h mftransform.h oletx2xa.h tcpmib.h wsdxml.h

cryptuiapi.h fileopen.dlg mgm.h opmapi.h tdh.h wsdxmldom.h

cryptxml.h filter.h mgmtapi.h optary.h tdi.h wshisotp.h

cscapi.h filterr.h midles.h p2p.h tdiinfo.h wsipv6ok.h

cscobj.h findtext.dlg mimedisp.h parser.h termmgr.h wsipx.h

ctfutb.h fltdefs.h mimeinfo.h patchapi.h textserv.h wsnetbs.h

ctxtcall.h fltuser.h minmax.h patchwiz.h textstor.h wsnwlink.h

custcntl.h fltuserstructures.h mlang.h pbt.h timeprov.h wspiapi.h

d2d1.h fltwinerror.h mmc.h pchannel.h tlhelp32.h wsrm.h

d2d1_1.h font.dlg mmcobj.h pcrt32.h tlogstg.h wsvns.h

d2d1_1helper.h fsrm.h mmdeviceapi.h pdh.h tmschema.h wtsapi32.h

d2d1effectauthor.h fsrmenums.h mmreg.h pdhmsg.h tnef.h wtypes.h

d2d1effecthelpers.h fsrmpipeline.h mmstream.h penwin.h tom.h xa.h

d2d1helper.h fsrmquota.h mmstream.idl perflib.h tpcshrd.h xcmc.h

d2dbasetypes.h fsrmreports.h mmsystem.h perhist.h traffic.h xcmcext.h

d2derr.h fsrmscreen.h mobsync.h persist.h transact.h xcmcmsx2.h

d3d.h ftsiface.h moniker.h pgobootrun.h triedcid.h xcmcmsxt.h

d3d10.h functiondiscoveryapi.h mpeg2bits.h pla.h triediid.h xenroll.h

d3d10.idl functiondiscoverycategories.h mpeg2data.h poclass.h triedit.h xinput.h

d3d10_1.h functiondiscoveryconstraints.h mpeg2psiparser.h polarity.h tspi.h xmldomdid.h

d3d10_1.idl functiondiscoverykeys.h mpeg2structs.h poppack.h tssbx.h xmldsodid.h

d3d10_1shader.h functiondiscoverynotification.h mprapi.h portabledeviceconnectapi.h tsuserex.h xmllite.h

d3d10effect.h fusion.h mprerror.h portabledevicetypes.h tsuserex_i.c xmltrnsf.h

d3d10misc.h fwpmtypes.h mq.h powrprof.h tuner.h xolehlp.h

d3d10shader.h fwpmu.h mqmail.h prnasnot.h tvout.h zmouse.h

d3d11.h fwptypes.h mqoai.h prnsetup.dlg txcoord.h

d3d11.idl gb18030.h msacm.h prntfont.h txctx.h

d3d11shader.h gdiplus/ msacmdlg.dlg profile.h txdtc.h

d3d8.h gdiplus.h msacmdlg.h profinfo.h txfw32.h

d3d8caps.h GL/ msado15.h propidl.h typeinfo.h

CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$

很明显是一堆头文件。

(7)conftest.c

要编译的文件。

(8)-quiet

又重复了一次quiet参数

(9)-dumpbase conftest.c

语法是：

-dumpbase                       [enabled]

(10)-mtune=generic -march=i686

常见的配置

(11)-auxbase或-auxbase conftest

结果是：cc1中，没找到此参数

貌似此处不支持此参数

貌似就是此参数，导致出错的？待后续验证。

(12)-O2

普通的优化参数

(13)-version

对应的语法：

-version                              [disabled]

难道是此处disabled，所以出错的？待后续验证。

(14)-o /tmp/ccldAXzD.s

目标输出文件，也很正常。

7.综合分析下来，最有可能出错的是：

(11)-auxbase或-auxbase conftest

或：

(13)-version

而去搜

cc1 auxbase

也没找到有效的参考资料。

所以，先不去深究，先去试试，上述的命令：/bin/../lib/gcc/i686-pc-cygwin/4.7.3/cc1.exe -quiet -v -I /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -I /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -iprefix /bin/../lib/gcc/i686-pc-cygwin/4.7.3/ -D__CYGWIN32__ -D__CYGWIN__ -Dunix -D__unix__ -D__unix -idirafter /usr/lib/../include/w32api -idirafter ../../include/w32api conftest.c -quiet -dumpbase conftest.c -mtune=generic -march=i686 -auxbase conftest -O2 -version -o /tmp/ccldAXzD.s

手动执行时，是否也是同样错误：

不过先要去构造一个conftest.c

还是把之前：

中的拿过来用，放到当前文件夹下。

D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\output\build\host-libtool-2.2.10\conftest.c

内容为：#include

int

main ()

{

;

return 0;

}

然后去试试手动输入命令，是否会出错：

结果是可以正常运行的，且可以生成对应的.s文件：CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$ /bin/../lib/gcc/i686-pc-cygwin/4.7.3/cc1.exe -quiet -v -I /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -I /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -iprefix /bin/../lib/gcc/i686-pc-cygwin/4.7.3/ -D__CYGWIN32__ -D__CYGWIN__ -Dunix -D__unix__ -D__unix -idirafter /usr/lib/../include/w32api -idirafter ../../include/w32api conftest.c -quiet -dumpbase conftest.c -mtune=generic -march=i686 -auxbase conftest -O2 -version -o /tmp/ccldAXzD.s

GNU C (GCC) version 4.7.3 (i686-pc-cygwin)

compiled by GNU C version 4.7.3, GMP version 4.3.2, MPFR version 3.0.1-p4, MPC version 1.0.1

warning: MPFR header version 3.0.1-p4 differs from library version 3.1.2.

GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072

ignoring nonexistent directory "/bin/../lib/gcc/i686-pc-cygwin/4.7.3/../../../../i686-pc-cygwin/include"

ignoring duplicate directory "/usr/lib/gcc/i686-pc-cygwin/4.7.3/include"

ignoring nonexistent directory "/usr/local/include"

ignoring duplicate directory "/usr/lib/gcc/i686-pc-cygwin/4.7.3/include-fixed"

ignoring nonexistent directory "/usr/lib/gcc/i686-pc-cygwin/4.7.3/../../../../i686-pc-cygwin/include"

ignoring nonexistent directory "../../include/w32api"

ignoring duplicate directory "/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include"

#include "..." search starts here:

#include <...> search starts here:

/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include

/bin/../lib/gcc/i686-pc-cygwin/4.7.3/include

/bin/../lib/gcc/i686-pc-cygwin/4.7.3/include-fixed

/usr/include

/usr/lib/../include/w32api

End of search list.

GNU C (GCC) version 4.7.3 (i686-pc-cygwin)

compiled by GNU C version 4.7.3, GMP version 4.3.2, MPFR version 3.0.1-p4, MPC version 1.0.1

warning: MPFR header version 3.0.1-p4 differs from library version 3.1.2.

GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072

Compiler executable checksum: da7649da3bc960a98e1e54fd1c08b870

CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$ ls conftest* -lha

-rwxr-xr-x 1 Administrators Domänen-Benutzer 52 Sep 6 14:54 conftest.c*

CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$ ls /tmp/cc

ccANTJob.le ccglr9mi.o cciCD0dV.ld ccjnXRj9.o ccldAXzD.s ccNtnmQZ.c

CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$ ls /tmp/ccldAXzD.s -lha

-rw-r--r-- 1 CLi Domänen-Benutzer 396 Sep 9 15:38 /tmp/ccldAXzD.s

CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$

但是注意到，此处有个警告：

warning: MPFR header version 3.0.1-p4 differs from library version 3.1.2.

不知道会不会影响之前的编译。

8.然后再去把命令中的-quiet去掉：/bin/../lib/gcc/i686-pc-cygwin/4.7.3/cc1.exe -v -I /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -I /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -iprefix /bin/../lib/gcc/i686-pc-cygwin/4.7.3/ -D__CYGWIN32__ -D__CYGWIN__ -Dunix -D__unix__ -D__unix -idirafter /usr/lib/../include/w32api -idirafter ../../include/w32api conftest.c -dumpbase conftest.c -mtune=generic -march=i686 -auxbase conftest -O2 -version -o /tmp/ccldAXzD.s

看看详细结果：CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$ /bin/../lib/gcc/i686-pc-cygwin/4.7.3/cc1.exe -v -I /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -I /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -iprefix /bin/../lib/gcc/i686-pc-cygwin/4.7.3/ -D__CYGWIN32__ -D__CYGWIN__ -Dunix -D__unix__ -D__unix -idirafter /usr/lib/../include/w32api -idirafter ../../include/w32api conftest.c -dumpbase conftest.c -mtune=generic -march=i686 -auxbase conftest -O2 -version -o /tmp/ccldAXzD.s

GNU C (GCC) version 4.7.3 (i686-pc-cygwin)

compiled by GNU C version 4.7.3, GMP version 4.3.2, MPFR version 3.0.1-p4, MPC version 1.0.1

warning: MPFR header version 3.0.1-p4 differs from library version 3.1.2.

GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072

ignoring nonexistent directory "/bin/../lib/gcc/i686-pc-cygwin/4.7.3/../../../../i686-pc-cygwin/include"

ignoring duplicate directory "/usr/lib/gcc/i686-pc-cygwin/4.7.3/include"

ignoring nonexistent directory "/usr/local/include"

ignoring duplicate directory "/usr/lib/gcc/i686-pc-cygwin/4.7.3/include-fixed"

ignoring nonexistent directory "/usr/lib/gcc/i686-pc-cygwin/4.7.3/../../../../i686-pc-cygwin/include"

ignoring nonexistent directory "../../include/w32api"

ignoring duplicate directory "/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include"

#include "..." search starts here:

#include <...> search starts here:

/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include

/bin/../lib/gcc/i686-pc-cygwin/4.7.3/include

/bin/../lib/gcc/i686-pc-cygwin/4.7.3/include-fixed

/usr/include

/usr/lib/../include/w32api

End of search list.

GNU C (GCC) version 4.7.3 (i686-pc-cygwin)

compiled by GNU C version 4.7.3, GMP version 4.3.2, MPFR version 3.0.1-p4, MPC version 1.0.1

warning: MPFR header version 3.0.1-p4 differs from library version 3.1.2.

GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072

options passed: -v

-I /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include

-I /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include

-iprefix /bin/../lib/gcc/i686-pc-cygwin/4.7.3/ -D__CYGWIN32__ -D__CYGWIN__

-Dunix -D__unix__ -D__unix -idirafter /usr/lib/../include/w32api

-idirafter ../../include/w32api conftest.c -mtune=generic -march=i686 -O2

options enabled: -falign-labels -fasynchronous-unwind-tables

-fauto-inc-dec -fbranch-count-reg -fcaller-saves

-fcombine-stack-adjustments -fcommon -fcompare-elim -fcprop-registers

-fcrossjumping -fcse-follow-jumps -fdebug-types-section -fdefer-pop

-fdelete-null-pointer-checks -fdevirtualize -fdwarf2-cfi-asm

-fearly-inlining -feliminate-unused-debug-types -fexpensive-optimizations

-fforward-propagate -ffunction-cse -fgcse -fgcse-lm -fgnu-runtime

-fguess-branch-probability -fident -fif-conversion -fif-conversion2

-findirect-inlining -finline -finline-atomics

-finline-functions-called-once -finline-small-functions -fipa-cp

-fipa-profile -fipa-pure-const -fipa-reference -fipa-sra

-fira-share-save-slots -fira-share-spill-slots -fivopts

-fkeep-inline-dllexport -fkeep-static-consts -fleading-underscore

-fmath-errno -fmerge-constants -fmerge-debug-strings

-fmove-loop-invariants -fomit-frame-pointer -foptimize-register-move

-foptimize-sibling-calls -foptimize-strlen -fpartial-inlining -fpeephole

-fpeephole2 -fprefetch-loop-arrays -free -freg-struct-return -fregmove

-freorder-blocks -freorder-functions -frerun-cse-after-loop

-fsched-critical-path-heuristic -fsched-dep-count-heuristic

-fsched-group-heuristic -fsched-interblock -fsched-last-insn-heuristic

-fsched-rank-heuristic -fsched-spec -fsched-spec-insn-heuristic

-fsched-stalled-insns-dep -fschedule-insns2 -fset-stack-executable

-fshow-column -fshrink-wrap -fsigned-zeros -fsplit-ivs-in-unroller

-fsplit-wide-types -fstrict-aliasing -fstrict-overflow

-fstrict-volatile-bitfields -fthread-jumps -ftoplevel-reorder

-ftrapping-math -ftree-bit-ccp -ftree-builtin-call-dce -ftree-ccp

-ftree-ch -ftree-copy-prop -ftree-copyrename -ftree-cselim -ftree-dce

-ftree-dominator-opts -ftree-dse -ftree-forwprop -ftree-fre

-ftree-loop-if-convert -ftree-loop-im -ftree-loop-ivcanon

-ftree-loop-optimize -ftree-parallelize-loops= -ftree-phiprop -ftree-pre

-ftree-pta -ftree-reassoc -ftree-scev-cprop -ftree-sink

-ftree-slp-vectorize -ftree-sra -ftree-switch-conversion -ftree-tail-merge

-ftree-ter -ftree-vect-loop-version -ftree-vrp -funit-at-a-time

-funwind-tables -fvar-tracking -fvar-tracking-assignments

-fvect-cost-model -fzero-initialized-in-bss -m32 -m80387

-m96bit-long-double -maccumulate-outgoing-args -malign-double

-malign-stringops -mfancy-math-387 -mfp-ret-in-387 -mieee-fp -mno-red-zone

-mno-sse4 -mpush-args -msahf -mstack-arg-probe

Compiler executable checksum: da7649da3bc960a98e1e54fd1c08b870

bswap_16 bswap_32 bswap_64 gnu_dev_major gnu_dev_minor gnu_dev_makedev __sgetc_r main

Analyzing compilation unit

Performing interprocedural optimizations

Assembling functions:

main

Execution times (seconds)

phase setup : 0.00 ( 0%) usr 0.01 (48%) sys 0.01 (15%) wall 513 kB (49%) ggc

phase parsing : 0.03 (100%) usr 0.02 (52%) sys 0.04 (73%) wall 495 kB (47%) ggc

preprocessing : 0.01 (48%) usr 0.02 (52%) sys 0.03 (47%) wall 155 kB (15%) ggc

lexical analysis : 0.02 (52%) usr 0.00 ( 0%) sys 0.01 (11%) wall 0 kB ( 0%) ggc

parser (global) : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 (11%) wall 295 kB (28%) ggc

TOTAL : 0.03 0.03 0.06 1047 kB

CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$

还是看不出什么端倪。

9.突然想到，不给定对应的conftest.c，试试什么效果。会不会出现和之前的错误同样的信息。

删除：

D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\output\build\host-libtool-2.2.10\conftest.c

然后运行之前的：/bin/../lib/gcc/i686-pc-cygwin/4.7.3/cc1.exe -quiet -v -I /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -I /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -iprefix /bin/../lib/gcc/i686-pc-cygwin/4.7.3/ -D__CYGWIN32__ -D__CYGWIN__ -Dunix -D__unix__ -D__unix -idirafter /usr/lib/../include/w32api -idirafter ../../include/w32api conftest.c -quiet -dumpbase conftest.c -mtune=generic -march=i686 -auxbase conftest -O2 -version -o /tmp/ccldAXzD.s

看看结果：CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$ /bin/../lib/gcc/i686-pc-cygwin/4.7.3/cc1.exe -quiet -v -I /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -I /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -iprefix /bin/../lib/gcc/i686-pc-cygwin/4.7.3/ -D__CYGWIN32__ -D__CYGWIN__ -Dunix -D__unix__ -D__unix -idirafter /usr/lib/../include/w32api -idirafter ../../include/w32api conftest.c -quiet -dumpbase conftest.c -mtune=generic -march=i686 -auxbase conftest -O2 -version -o /tmp/ccldAXzD.s

GNU C (GCC) version 4.7.3 (i686-pc-cygwin)

compiled by GNU C version 4.7.3, GMP version 4.3.2, MPFR version 3.0.1-p4, MPC version 1.0.1

warning: MPFR header version 3.0.1-p4 differs from library version 3.1.2.

GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072

ignoring nonexistent directory "/bin/../lib/gcc/i686-pc-cygwin/4.7.3/../../../../i686-pc-cygwin/include"

ignoring duplicate directory "/usr/lib/gcc/i686-pc-cygwin/4.7.3/include"

ignoring nonexistent directory "/usr/local/include"

ignoring duplicate directory "/usr/lib/gcc/i686-pc-cygwin/4.7.3/include-fixed"

ignoring nonexistent directory "/usr/lib/gcc/i686-pc-cygwin/4.7.3/../../../../i686-pc-cygwin/include"

ignoring nonexistent directory "../../include/w32api"

ignoring duplicate directory "/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include"

#include "..." search starts here:

#include <...> search starts here:

/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include

/bin/../lib/gcc/i686-pc-cygwin/4.7.3/include

/bin/../lib/gcc/i686-pc-cygwin/4.7.3/include-fixed

/usr/include

/usr/lib/../include/w32api

End of search list.

cc1: fatal error: conftest.c: No such file or directory

compilation terminated.

这个是正常的，可以说清楚，是.c没找到。

10.然后再去搜：

warning: MPFR header version 3.0.1-p4 differs from library version 3.1.2

结果也没有效资料。

11.现在还是之前的问题：

手动自行那些命令，都是可以的。

但是make时内部的./configure时，就出错了。

看看能否想办法，通过./configure时，就去掉之前传递给cc1的-quite，让其输出当时的cc1的详细执行过程。看看是否有何异常。

但是却发现

D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\output\build\host-libtool-2.2.10\config.log

中的

-quiet

这个参数，没有设置的地方。好像是执行cc1的时候，自己加上去的。。。

12.再试试，实现建立好了

D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\output\build\host-libtool-2.2.10\conftest.c

然后再去执行之前的命令，带-v的：PATH="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/bin:/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin:/bin:/home/CLi/develop/crosstool-ng/x-tools/arm-xscale-linux-gnueabi/bin:/opt/crosstool-ng/bin:/home/CLi/develop/crosstool-ng/x-tools/armxscalecurl/bin:/usr/local/bin:/usr/bin:/cygdrive/d/tmp/dev_install_root/Python27_x64:/cygdrive/d/tmp/dev_install_root/Python27_x64/Lib/site-packages/PyQt4:/cygdrive/d/tmp/dev_install_root/Perl64/site/bin:/cygdrive/d/tmp/dev_install_root/Perl64/bin:/cygdrive/c/Program Files/Common Files/Microsoft Shared/Windows Live:/cygdrive/c/Program Files (x86)/Common Files/Microsoft Shared/Windows Live:/cygdrive/c/Windows/system32:/cygdrive/c/Windows:/cygdrive/c/Windows/System32/Wbem:/cygdrive/c/Windows/System32/WindowsPowerShell/v1.0:/cygdrive/c/Program Files (x86)/Microsoft SQL Server/100/Tools/Binn:/cygdrive/c/Program Files/Microsoft SQL Server/100/Tools/Binn:/cygdrive/c/Program Files/Microsoft SQL Server/100/DTS/Binn:/cygdrive/d/tmp/WordPress/mysql/mysql-5.5.18/MySQL/MySQL Server 5.5/bin:/cygdrive/d/tmp/WordPress/DevRoot/MySQL/MySQL Server 5.5/bin:/cygdrive/d/tmp/WordPress/DevRoot/php-5.3.6-Win32-VC9-x64:/cygdrive/d/tmp/WordPress/DevRoot/php-5.3.6-Win32-VC9-x64/ext:/cygdrive/d/tmp/WordPress/DevRoot/Python27:/cygdrive/c/Program Files (x86)/Common Files/Acronis/SnapAPI:/cygdrive/c/Program Files (x86)/Windows Live/Shared:/cygdrive/c/Program Files/Java/jdk1.7.0_11/bin:/home/CLi/develop/docbook/tools/fop/lib:/home/CLi/develop/docbook/tools/fop:/cygdrive/d/DevInstallRoot/FF/DD_IDE_1.1.2/TOK/BIN:/cygdrive/d/DevInstallRoot/FF/DD_IDE_1.2.0/TOK/BIN:/cygdrive/d/DevRoot/EmbeddedDevelop/trunk/Research/CLI/FF/FBK/develop/tools/develop-tools:/cygdrive/d/tmp/WordPress/DevRoot/Python27/Scripts:/cygdrive/d/tmp/dev_install_root/PostgreSQL/8.3/bin:/cygdrive/d/tmp/dev_install_root/ant/apache-ant-1.8.4/bin:/cygdrive/c/Program Files/nodejs:/cygdrive/c/Program Files/Microsoft/Web Platform Installer:/cygdrive/c/Program Files/TortoiseSVN/bin:/cygdrive/d/DevRoot/IndustrialMobileAutomation/HandheldDataSetter/ANTLR/batchFile:/cygdrive/c/Program Files (x86)/QuickTime/QTSystem:/cygdrive/d/tmp/tmp_dev_root/android/adt-bundle-windows/sdk/platform-tools:/cygdrive/d/tmp/dev_install_root/Tesseract-OCR:/cygdrive/d/tmp/dev_install_root/jython2.5.3/bin:/cygdrive/d/devinstallroot/gnuarm/bin:/cygdrive/d/tmp/dev_install_root/HTML Help Workshop:/cygdrive/c/Users/CLi/AppData/Roaming/npm:/usr/lib/lapack:/opt/gcc-4.0.4-glibc-2.3.6-kernel-2.6.17/sysroot-arm-xscale-linux-gnu/usr/include:/opt/gcc-4.0.4-glibc-2.3.6-kernel-2.6.17/sysroot-arm-xscale-linux-gnu/usr/include/linux" AR="/bin/ar" AS="/bin/as" LD="/bin/ld" NM="/bin/nm" CC="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc" GCC="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc" CXX="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/g++" CPP="/bin/cpp" CPPFLAGS="-I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" CFLAGS="-v -O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" CXXFLAGS="-O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" LDFLAGS="-L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib" PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 PKG_CONFIG="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/pkg-config" PKG_CONFIG_SYSROOT_DIR="/" PKG_CONFIG_LIBDIR="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib/pkgconfig:/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/share/pkgconfig" PERLLIB="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib/perl" LD_LIBRARY_PATH="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib:" CFLAGS="-v -O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" LDFLAGS="-L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib" ./configure --prefix="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr" --sysconfdir="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/etc" --enable-shared --disable-static --disable-gtk-doc --disable-doc --disable-docs --disable-documentation --with-xmlto=no --with-fop=no

看看效果：

结果错误依旧：CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$ PATH="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/bin:/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin:/bin:/home/CLi/develop/crosstool-ng/x-tools/arm-xscale-linux-gnueabi/bin:/opt/crosstool-ng/bin:/home/CLi/develop/crosstool-ng/x-tools/armxscalecurl/bin:/usr/local/bin:/usr/bin:/cygdrive/d/tmp/dev_install_root/Python27_x64:/cygdrive/d/tmp/dev_install_root/Python27_x64/Lib/site-packages/PyQt4:/cygdrive/d/tmp/dev_install_root/Perl64/site/bin:/cygdrive/d/tmp/dev_install_root/Perl64/bin:/cygdrive/c/Program Files/Common Files/Microsoft Shared/Windows Live:/cygdrive/c/Program Files (x86)/Common Files/Microsoft Shared/Windows Live:/cygdrive/c/Windows/system32:/cygdrive/c/Windows:/cygdrive/c/Windows/System32/Wbem:/cygdrive/c/Windows/System32/WindowsPowerShell/v1.0:/cygdrive/c/Program Files (x86)/Microsoft SQL Server/100/Tools/Binn:/cygdrive/c/Program Files/Microsoft SQL Server/100/Tools/Binn:/cygdrive/c/Program Files/Microsoft SQL Server/100/DTS/Binn:/cygdrive/d/tmp/WordPress/mysql/mysql-5.5.18/MySQL/MySQL Server 5.5/bin:/cygdrive/d/tmp/WordPress/DevRoot/MySQL/MySQL Server 5.5/bin:/cygdrive/d/tmp/WordPress/DevRoot/php-5.3.6-Win32-VC9-x64:/cygdrive/d/tmp/WordPress/DevRoot/php-5.3.6-Win32-VC9-x64/ext:/cygdrive/d/tmp/WordPress/DevRoot/Python27:/cygdrive/c/Program Files (x86)/Common Files/Acronis/SnapAPI:/cygdrive/c/Program Files (x86)/Windows Live/Shared:/cygdrive/c/Program Files/Java/jdk1.7.0_11/bin:/home/CLi/develop/docbook/tools/fop/lib:/home/CLi/develop/docbook/tools/fop:/cygdrive/d/DevInstallRoot/FF/DD_IDE_1.1.2/TOK/BIN:/cygdrive/d/DevInstallRoot/FF/DD_IDE_1.2.0/TOK/BIN:/cygdrive/d/DevRoot/EmbeddedDevelop/trunk/Research/CLI/FF/FBK/develop/tools/develop-tools:/cygdrive/d/tmp/WordPress/DevRoot/Python27/Scripts:/cygdrive/d/tmp/dev_install_root/PostgreSQL/8.3/bin:/cygdrive/d/tmp/dev_install_root/ant/apache-ant-1.8.4/bin:/cygdrive/c/Program Files/nodejs:/cygdrive/c/Program Files/Microsoft/Web Platform Installer:/cygdrive/c/Program Files/TortoiseSVN/bin:/cygdrive/d/DevRoot/IndustrialMobileAutomation/HandheldDataSetter/ANTLR/batchFile:/cygdrive/c/Program Files (x86)/QuickTime/QTSystem:/cygdrive/d/tmp/tmp_dev_root/android/adt-bundle-windows/sdk/platform-tools:/cygdrive/d/tmp/dev_install_root/Tesseract-OCR:/cygdrive/d/tmp/dev_install_root/jython2.5.3/bin:/cygdrive/d/devinstallroot/gnuarm/bin:/cygdrive/d/tmp/dev_install_root/HTML Help Workshop:/cygdrive/c/Users/CLi/AppData/Roaming/npm:/usr/lib/lapack:/opt/gcc-4.0.4-glibc-2.3.6-kernel-2.6.17/sysroot-arm-xscale-linux-gnu/usr/include:/opt/gcc-4.0.4-glibc-2.3.6-kernel-2.6.17/sysroot-arm-xscale-linux-gnu/usr/include/linux" AR="/bin/ar" AS="/bin/as" LD="/bin/ld" NM="/bin/nm" CC="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc" GCC="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc" CXX="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/g++" CPP="/bin/cpp" CPPFLAGS="-I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" CFLAGS="-v -O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" CXXFLAGS="-O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" LDFLAGS="-L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib" PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 PKG_CONFIG="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/pkg-config" PKG_CONFIG_SYSROOT_DIR="/" PKG_CONFIG_LIBDIR="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib/pkgconfig:/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/share/pkgconfig" PERLLIB="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib/perl" LD_LIBRARY_PATH="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib:" CFLAGS="-v -O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" LDFLAGS="-L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib" ./configure --prefix="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr" --sysconfdir="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/etc" --enable-shared --disable-static --disable-gtk-doc --disable-doc --disable-docs --disable-documentation --with-xmlto=no --with-fop=no

configure: WARNING: unrecognized options: --disable-gtk-doc, --disable-doc, --disable-docs, --disable-documentation, --with-xmlto, --with-fop

## -------------------------- ##

## Configuring libtool 2.2.10 ##

## -------------------------- ##

checking for a BSD-compatible install... /bin/install -c

checking whether build environment is sane... yes

checking for a thread-safe mkdir -p... /bin/mkdir -p

checking for gawk... gawk

checking whether make sets $(MAKE)... yes

checking whether subdir libobjs are useable... yes

checking for gcc... /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc

checking whether the C compiler works... no

configure: error: in `/home/CLi/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10':

configure: error: C compiler cannot create executables

See `config.log' for more details.

CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$

然后，参考：

现在在实在找不到根本原因的情况下：

只能尝试去，重新安装cygwin，去将gcc从当前的4.7.3，降级到4.5.3：

然后再看看，能否解决问题。

13.然后，接着再去重新make clean：CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05

$ make clean

rm -rf /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/arm-buildroot-linux-uclibcgnueabi/sysroot /home/CLi/develop/buildroot/buildroot-2013.05/output/target /home/CLi/develop/buildroot/buildroot-2013.05/output/images /home/CLi/develop/buildroot/buildroot-2013.05/output/host \

/home/CLi/develop/buildroot/buildroot-2013.05/output/stamps /home/CLi/develop/buildroot/buildroot-2013.05/output/build /home/CLi/develop/buildroot/buildroot-2013.05/output/toolchain /home/CLi/develop/buildroot/buildroot-2013.05/output/staging \

/home/CLi/develop/buildroot/buildroot-2013.05/output/legal-info

再重新make：

结果是，用4.5.3的gcc，也是错误依旧

D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\output\build\host-libtool-2.2.10\config.log

相关内容为：configure:3496: checking for C compiler version

configure:3505: /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc --version >&5

gcc (GCC) 4.5.3

Copyright (C) 2010 Free Software Foundation, Inc.

This is free software; see the source for copying conditions. There is NO

warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

configure:3516: $? = 0

configure:3505: /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc -v >&5

Using built-in specs.

COLLECT_GCC=/bin/gcc

COLLECT_LTO_WRAPPER=/usr/lib/gcc/i686-pc-cygwin/4.5.3/lto-wrapper.exe

Target: i686-pc-cygwin

Configured with: /gnu/gcc/releases/respins/4.5.3-3/gcc4-4.5.3-3/src/gcc-4.5.3/configure --srcdir=/gnu/gcc/releases/respins/4.5.3-3/gcc4-4.5.3-3/src/gcc-4.5.3 --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --libexecdir=/usr/lib --datadir=/usr/share --localstatedir=/var --sysconfdir=/etc --datarootdir=/usr/share --docdir=/usr/share/doc/gcc4 -C --datadir=/usr/share --infodir=/usr/share/info --mandir=/usr/share/man -v --with-gmp=/usr --with-mpfr=/usr --enable-bootstrap --enable-version-specific-runtime-libs --libexecdir=/usr/lib --enable-static --enable-shared --enable-shared-libgcc --disable-__cxa_atexit --with-gnu-ld --with-gnu-as --with-dwarf2 --disable-sjlj-exceptions --enable-languages=ada,c,c++,fortran,java,lto,objc,obj-c++ --enable-graphite --enable-lto --enable-java-awt=gtk --disable-symvers --enable-libjava --program-suffix=-4 --enable-libgomp --enable-libssp --enable-libada --enable-threads=posix --with-arch=i686 --with-tune=generic --enable-libgcj-sublibs CC=gcc-4 CXX=g++-4 CC_FOR_TARGET=gcc-4 CXX_FOR_TARGET=g++-4 GNATMAKE_FOR_TARGET=gnatmake GNATBIND_FOR_TARGET=gnatbind --with-ecj-jar=/usr/share/java/ecj.jar

Thread model: posix

gcc version 4.5.3 (GCC)

configure:3516: $? = 0

configure:3505: /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc -V >&5

gcc: '-V' option must have argument

configure:3516: $? = 1

configure:3505: /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc -qversion >&5

gcc: unrecognized option '-qversion'

gcc: no input files

configure:3516: $? = 1

configure:3536: checking whether the C compiler works

configure:3558: /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc -O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib conftest.c >&5

/usr/lib/gcc/i686-pc-cygwin/4.5.3/cc1.exe: error while loading shared libraries: ?: cannot open shared object file: No such file or directory

configure:3562: $? = 1

configure:3600: result: no

14.参考了很多帖子，比如：

都是缺少某个cc1所依赖的库，

但是，我此处cygcheck出来的，都是正常的：CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05

$ cygcheck /usr/lib/gcc/i686-pc-cygwin/4.5.3/cc1.exe

D:\tmp\tmp_dev_root\cgwin\lib\gcc\i686-pc-cygwin\4.5.3\cc1.exe

D:\tmp\tmp_dev_root\cgwin\bin\cygcloog-0.dll

D:\tmp\tmp_dev_root\cgwin\bin\cygwin1.dll

C:\Windows\system32\KERNEL32.dll

C:\Windows\system32\API-MS-Win-Core-RtlSupport-L1-1-0.dll

C:\Windows\system32\ntdll.dll

C:\Windows\system32\KERNELBASE.dll

C:\Windows\system32\API-MS-Win-Core-ProcessThreads-L1-1-0.dll

C:\Windows\system32\API-MS-Win-Core-Heap-L1-1-0.dll

C:\Windows\system32\API-MS-Win-Core-Memory-L1-1-0.dll

C:\Windows\system32\API-MS-Win-Core-Handle-L1-1-0.dll

C:\Windows\system32\API-MS-Win-Core-Synch-L1-1-0.dll

C:\Windows\system32\API-MS-Win-Core-File-L1-1-0.dll

C:\Windows\system32\API-MS-Win-Core-IO-L1-1-0.dll

C:\Windows\system32\API-MS-Win-Core-ThreadPool-L1-1-0.dll

C:\Windows\system32\API-MS-Win-Core-LibraryLoader-L1-1-0.dll

C:\Windows\system32\API-MS-Win-Core-NamedPipe-L1-1-0.dll

C:\Windows\system32\API-MS-Win-Core-Misc-L1-1-0.dll

C:\Windows\system32\API-MS-Win-Core-SysInfo-L1-1-0.dll

C:\Windows\system32\API-MS-Win-Core-Localization-L1-1-0.dll

C:\Windows\system32\API-MS-Win-Core-ProcessEnvironment-L1-1-0.dll

C:\Windows\system32\API-MS-Win-Core-String-L1-1-0.dll

C:\Windows\system32\API-MS-Win-Core-Debug-L1-1-0.dll

C:\Windows\system32\API-MS-Win-Core-ErrorHandling-L1-1-0.dll

C:\Windows\system32\API-MS-Win-Core-Fibers-L1-1-0.dll

C:\Windows\system32\API-MS-Win-Core-Util-L1-1-0.dll

C:\Windows\system32\API-MS-Win-Core-Profile-L1-1-0.dll

C:\Windows\system32\API-MS-Win-Security-Base-L1-1-0.dll

D:\tmp\tmp_dev_root\cgwin\bin\cyggmp-10.dll

D:\tmp\tmp_dev_root\cgwin\bin\cygppl_c-4.dll

D:\tmp\tmp_dev_root\cgwin\bin\cygppl-9.dll

D:\tmp\tmp_dev_root\cgwin\bin\cyggcc_s-1.dll

D:\tmp\tmp_dev_root\cgwin\bin\cygstdc++-6.dll

D:\tmp\tmp_dev_root\cgwin\bin\cyggmpxx-4.dll

D:\tmp\tmp_dev_root\cgwin\bin\cygpwl-5.dll

D:\tmp\tmp_dev_root\cgwin\bin\cyggmp-3.dll

D:\tmp\tmp_dev_root\cgwin\bin\cygiconv-2.dll

D:\tmp\tmp_dev_root\cgwin\bin\cygintl-8.dll

D:\tmp\tmp_dev_root\cgwin\bin\cygmpc-1.dll

D:\tmp\tmp_dev_root\cgwin\bin\cygmpfr-1.dll

D:\tmp\tmp_dev_root\cgwin\bin\cygmpfr-4.dll

D:\tmp\tmp_dev_root\cgwin\bin\cygppl_c-2.dll

D:\tmp\tmp_dev_root\cgwin\bin\cygppl-7.dll

D:\tmp\tmp_dev_root\cgwin\bin\cygz.dll

CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05

$

然后想到，会不会是由于./configure时，传递进去的LD_LIBRARY_PATH有问题。

此处，再次验证，手动输入命令，也是会出错的：CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05

$ cd /home/CLi/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10/

CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$ rm -rf config.cache

CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$ PATH="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/bin:/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin:/bin:/home/CLi/develop/crosstool-ng/x-tools/arm-xscale-linux-gnueabi/bin:/opt/crosstool-ng/bin:/home/CLi/develop/crosstool-ng/x-tools/armxscalecurl/bin:/usr/local/bin:/usr/bin:/cygdrive/d/tmp/dev_install_root/Python27_x64:/cygdrive/d/tmp/dev_install_root/Python27_x64/Lib/site-packages/PyQt4:/cygdrive/d/tmp/dev_install_root/Perl64/site/bin:/cygdrive/d/tmp/dev_install_root/Perl64/bin:/cygdrive/c/Program Files/Common Files/Microsoft Shared/Windows Live:/cygdrive/c/Program Files (x86)/Common Files/Microsoft Shared/Windows Live:/cygdrive/c/Windows/system32:/cygdrive/c/Windows:/cygdrive/c/Windows/System32/Wbem:/cygdrive/c/Windows/System32/WindowsPowerShell/v1.0:/cygdrive/c/Program Files (x86)/Microsoft SQL Server/100/Tools/Binn:/cygdrive/c/Program Files/Microsoft SQL Server/100/Tools/Binn:/cygdrive/c/Program Files/Microsoft SQL Server/100/DTS/Binn:/cygdrive/d/tmp/WordPress/mysql/mysql-5.5.18/MySQL/MySQL Server 5.5/bin:/cygdrive/d/tmp/WordPress/DevRoot/MySQL/MySQL Server 5.5/bin:/cygdrive/d/tmp/WordPress/DevRoot/php-5.3.6-Win32-VC9-x64:/cygdrive/d/tmp/WordPress/DevRoot/php-5.3.6-Win32-VC9-x64/ext:/cygdrive/d/tmp/WordPress/DevRoot/Python27:/cygdrive/c/Program Files (x86)/Common Files/Acronis/SnapAPI:/cygdrive/c/Program Files (x86)/Windows Live/Shared:/cygdrive/c/Program Files/Java/jdk1.7.0_11/bin:/home/CLi/develop/docbook/tools/fop/lib:/home/CLi/develop/docbook/tools/fop:/cygdrive/d/DevInstallRoot/FF/DD_IDE_1.1.2/TOK/BIN:/cygdrive/d/DevInstallRoot/FF/DD_IDE_1.2.0/TOK/BIN:/cygdrive/d/DevRoot/EmbeddedDevelop/trunk/Research/CLI/FF/FBK/develop/tools/develop-tools:/cygdrive/d/tmp/WordPress/DevRoot/Python27/Scripts:/cygdrive/d/tmp/dev_install_root/PostgreSQL/8.3/bin:/cygdrive/d/tmp/dev_install_root/ant/apache-ant-1.8.4/bin:/cygdrive/c/Program Files/nodejs:/cygdrive/c/Program Files/Microsoft/Web Platform Installer:/cygdrive/c/Program Files/TortoiseSVN/bin:/cygdrive/d/DevRoot/IndustrialMobileAutomation/HandheldDataSetter/ANTLR/batchFile:/cygdrive/c/Program Files (x86)/QuickTime/QTSystem:/cygdrive/d/tmp/tmp_dev_root/android/adt-bundle-windows/sdk/platform-tools:/cygdrive/d/tmp/dev_install_root/Tesseract-OCR:/cygdrive/d/tmp/dev_install_root/jython2.5.3/bin:/cygdrive/d/devinstallroot/gnuarm/bin:/cygdrive/d/tmp/dev_install_root/HTML Help Workshop:/cygdrive/c/Users/CLi/AppData/Roaming/npm:/usr/lib/lapack:/opt/gcc-4.0.4-glibc-2.3.6-kernel-2.6.17/sysroot-arm-xscale-linux-gnu/usr/include:/opt/gcc-4.0.4-glibc-2.3.6-kernel-2.6.17/sysroot-arm-xscale-linux-gnu/usr/include/linux" AR="/bin/ar" AS="/bin/as" LD="/bin/ld" NM="/bin/nm" CC="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc" GCC="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc" CXX="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/g++" CPP="/bin/cpp" CPPFLAGS="-I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" CFLAGS="-O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" CXXFLAGS="-O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" LDFLAGS="-L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib" PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 PKG_CONFIG="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/pkg-config" PKG_CONFIG_SYSROOT_DIR="/" PKG_CONFIG_LIBDIR="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib/pkgconfig:/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/share/pkgconfig" PERLLIB="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib/perl" LD_LIBRARY_PATH="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib:" CFLAGS="-O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" LDFLAGS="-L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib" ./configure --prefix="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr" --sysconfdir="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/etc" --enable-shared --disable-static --disable-gtk-doc --disable-doc --disable-docs --disable-documentation --with-xmlto=no --with-fop=no

configure: WARNING: unrecognized options: --disable-gtk-doc, --disable-doc, --disable-docs, --disable-documentation, --with-xmlto, --with-fop

## -------------------------- ##

## Configuring libtool 2.2.10 ##

## -------------------------- ##

checking for a BSD-compatible install... /bin/install -c

checking whether build environment is sane... yes

checking for a thread-safe mkdir -p... /bin/mkdir -p

checking for gawk... gawk

checking whether make sets $(MAKE)... yes

checking whether subdir libobjs are useable... yes

checking for gcc... /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc

checking whether the C compiler works... no

configure: error: in `/home/CLi/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10':

configure: error: C compiler cannot create executables

See `config.log' for more details.

CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$

那就把对应的，之前的LD_LIBRARY_PATH的值：

/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib:

的最后多余的冒号去掉：

/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib

再把，cygcheck出来的那些路径，都加到之前的LD_LIBRARY_PATH中的值中。

15.参考：

然后从：D:\tmp\tmp_dev_root\cgwin\bin

C:\Windows\system32

得到Cygwin的路径：/usr/bin

/cygdrive/c/Windows/system32

然后去把LD_LIBRARY_PATH改为：LD_LIBRARY_PATH="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib:/usr/bin:

/cygdrive/c/Windows/system32"

然后再去编译试试：CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$ PATH="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/bin:/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin:/bin:/home/CLi/develop/crosstool-ng/x-tools/arm-xscale-linux-gnueabi/bin:/opt/crosstool-ng/bin:/home/CLi/develop/crosstool-ng/x-tools/armxscalecurl/bin:/usr/local/bin:/usr/bin:/cygdrive/d/tmp/dev_install_root/Python27_x64:/cygdrive/d/tmp/dev_install_root/Python27_x64/Lib/site-packages/PyQt4:/cygdrive/d/tmp/dev_install_root/Perl64/site/bin:/cygdrive/d/tmp/dev_install_root/Perl64/bin:/cygdrive/c/Program Files/Common Files/Microsoft Shared/Windows Live:/cygdrive/c/Program Files (x86)/Common Files/Microsoft Shared/Windows Live:/cygdrive/c/Windows/system32:/cygdrive/c/Windows:/cygdrive/c/Windows/System32/Wbem:/cygdrive/c/Windows/System32/WindowsPowerShell/v1.0:/cygdrive/c/Program Files (x86)/Microsoft SQL Server/100/Tools/Binn:/cygdrive/c/Program Files/Microsoft SQL Server/100/Tools/Binn:/cygdrive/c/Program Files/Microsoft SQL Server/100/DTS/Binn:/cygdrive/d/tmp/WordPress/mysql/mysql-5.5.18/MySQL/MySQL Server 5.5/bin:/cygdrive/d/tmp/WordPress/DevRoot/MySQL/MySQL Server 5.5/bin:/cygdrive/d/tmp/WordPress/DevRoot/php-5.3.6-Win32-VC9-x64:/cygdrive/d/tmp/WordPress/DevRoot/php-5.3.6-Win32-VC9-x64/ext:/cygdrive/d/tmp/WordPress/DevRoot/Python27:/cygdrive/c/Program Files (x86)/Common Files/Acronis/SnapAPI:/cygdrive/c/Program Files (x86)/Windows Live/Shared:/cygdrive/c/Program Files/Java/jdk1.7.0_11/bin:/home/CLi/develop/docbook/tools/fop/lib:/home/CLi/develop/docbook/tools/fop:/cygdrive/d/DevInstallRoot/FF/DD_IDE_1.1.2/TOK/BIN:/cygdrive/d/DevInstallRoot/FF/DD_IDE_1.2.0/TOK/BIN:/cygdrive/d/DevRoot/EmbeddedDevelop/trunk/Research/CLI/FF/FBK/develop/tools/develop-tools:/cygdrive/d/tmp/WordPress/DevRoot/Python27/Scripts:/cygdrive/d/tmp/dev_install_root/PostgreSQL/8.3/bin:/cygdrive/d/tmp/dev_install_root/ant/apache-ant-1.8.4/bin:/cygdrive/c/Program Files/nodejs:/cygdrive/c/Program Files/Microsoft/Web Platform Installer:/cygdrive/c/Program Files/TortoiseSVN/bin:/cygdrive/d/DevRoot/IndustrialMobileAutomation/HandheldDataSetter/ANTLR/batchFile:/cygdrive/c/Program Files (x86)/QuickTime/QTSystem:/cygdrive/d/tmp/tmp_dev_root/android/adt-bundle-windows/sdk/platform-tools:/cygdrive/d/tmp/dev_install_root/Tesseract-OCR:/cygdrive/d/tmp/dev_install_root/jython2.5.3/bin:/cygdrive/d/devinstallroot/gnuarm/bin:/cygdrive/d/tmp/dev_install_root/HTML Help Workshop:/cygdrive/c/Users/CLi/AppData/Roaming/npm:/usr/lib/lapack:/opt/gcc-4.0.4-glibc-2.3.6-kernel-2.6.17/sysroot-arm-xscale-linux-gnu/usr/include:/opt/gcc-4.0.4-glibc-2.3.6-kernel-2.6.17/sysroot-arm-xscale-linux-gnu/usr/include/linux" AR="/bin/ar" AS="/bin/as" LD="/bin/ld" NM="/bin/nm" CC="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc" GCC="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc" CXX="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/g++" CPP="/bin/cpp" CPPFLAGS="-I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" CFLAGS="-O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" CXXFLAGS="-O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" LDFLAGS="-L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib" PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 PKG_CONFIG="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/pkg-config" PKG_CONFIG_SYSROOT_DIR="/" PKG_CONFIG_LIBDIR="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib/pkgconfig:/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/share/pkgconfig" PERLLIB="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib/perl" LD_LIBRARY_PATH="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib:/usr/bin:/cygdrive/c/Windows/system32" CFLAGS="-O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" LDFLAGS="-L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib" ./configure --prefix="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr" --sysconfdir="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/etc" --enable-shared --disable-static --disable-gtk-doc --disable-doc --disable-docs --disable-documentation --with-xmlto=no --with-fop=no

configure: WARNING: unrecognized options: --disable-gtk-doc, --disable-doc, --disable-docs, --disable-documentation, --with-xmlto, --with-fop

## -------------------------- ##

## Configuring libtool 2.2.10 ##

## -------------------------- ##

checking for a BSD-compatible install... /bin/install -c

checking whether build environment is sane... yes

checking for a thread-safe mkdir -p... /bin/mkdir -p

checking for gawk... gawk

checking whether make sets $(MAKE)... yes

checking whether subdir libobjs are useable... yes

checking for gcc... /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc

checking whether the C compiler works... no

configure: error: in `/home/CLi/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10':

configure: error: C compiler cannot create executables

See `config.log' for more details.

CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$

很明显，还是错误依旧。

然后去看：

D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\output\build\host-libtool-2.2.10\config.log

但是结果里面，根本没有把对应的LD_LIBRARY_PATH传递进去。

里面根本就没有LD_LIBRARY_PATH的路径，所以对应的cc1执行的时候，也没有此路径。

16.此处手动把：

D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\output\build\host-libtool-2.2.10

删除掉，然后再make试试：CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05

$ rm output/build/host-libtool-2.2.10/ -rf

CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05

$ make

还是错误依旧。

17.再去，手动把路径都加到LDFLAGS和LD_LIBRARY_PATH，改为：PATH="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/bin:/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin:/bin:/home/CLi/develop/crosstool-ng/x-tools/arm-xscale-linux-gnueabi/bin:/opt/crosstool-ng/bin:/home/CLi/develop/crosstool-ng/x-tools/armxscalecurl/bin:/usr/local/bin:/usr/bin:/cygdrive/d/tmp/dev_install_root/Python27_x64:/cygdrive/d/tmp/dev_install_root/Python27_x64/Lib/site-packages/PyQt4:/cygdrive/d/tmp/dev_install_root/Perl64/site/bin:/cygdrive/d/tmp/dev_install_root/Perl64/bin:/cygdrive/c/Program Files/Common Files/Microsoft Shared/Windows Live:/cygdrive/c/Program Files (x86)/Common Files/Microsoft Shared/Windows Live:/cygdrive/c/Windows/system32:/cygdrive/c/Windows:/cygdrive/c/Windows/System32/Wbem:/cygdrive/c/Windows/System32/WindowsPowerShell/v1.0:/cygdrive/c/Program Files (x86)/Microsoft SQL Server/100/Tools/Binn:/cygdrive/c/Program Files/Microsoft SQL Server/100/Tools/Binn:/cygdrive/c/Program Files/Microsoft SQL Server/100/DTS/Binn:/cygdrive/d/tmp/WordPress/mysql/mysql-5.5.18/MySQL/MySQL Server 5.5/bin:/cygdrive/d/tmp/WordPress/DevRoot/MySQL/MySQL Server 5.5/bin:/cygdrive/d/tmp/WordPress/DevRoot/php-5.3.6-Win32-VC9-x64:/cygdrive/d/tmp/WordPress/DevRoot/php-5.3.6-Win32-VC9-x64/ext:/cygdrive/d/tmp/WordPress/DevRoot/Python27:/cygdrive/c/Program Files (x86)/Common Files/Acronis/SnapAPI:/cygdrive/c/Program Files (x86)/Windows Live/Shared:/cygdrive/c/Program Files/Java/jdk1.7.0_11/bin:/home/CLi/develop/docbook/tools/fop/lib:/home/CLi/develop/docbook/tools/fop:/cygdrive/d/DevInstallRoot/FF/DD_IDE_1.1.2/TOK/BIN:/cygdrive/d/DevInstallRoot/FF/DD_IDE_1.2.0/TOK/BIN:/cygdrive/d/DevRoot/EmbeddedDevelop/trunk/Research/CLI/FF/FBK/develop/tools/develop-tools:/cygdrive/d/tmp/WordPress/DevRoot/Python27/Scripts:/cygdrive/d/tmp/dev_install_root/PostgreSQL/8.3/bin:/cygdrive/d/tmp/dev_install_root/ant/apache-ant-1.8.4/bin:/cygdrive/c/Program Files/nodejs:/cygdrive/c/Program Files/Microsoft/Web Platform Installer:/cygdrive/c/Program Files/TortoiseSVN/bin:/cygdrive/d/DevRoot/IndustrialMobileAutomation/HandheldDataSetter/ANTLR/batchFile:/cygdrive/c/Program Files (x86)/QuickTime/QTSystem:/cygdrive/d/tmp/tmp_dev_root/android/adt-bundle-windows/sdk/platform-tools:/cygdrive/d/tmp/dev_install_root/Tesseract-OCR:/cygdrive/d/tmp/dev_install_root/jython2.5.3/bin:/cygdrive/d/devinstallroot/gnuarm/bin:/cygdrive/d/tmp/dev_install_root/HTML Help Workshop:/cygdrive/c/Users/CLi/AppData/Roaming/npm:/usr/lib/lapack:/opt/gcc-4.0.4-glibc-2.3.6-kernel-2.6.17/sysroot-arm-xscale-linux-gnu/usr/include:/opt/gcc-4.0.4-glibc-2.3.6-kernel-2.6.17/sysroot-arm-xscale-linux-gnu/usr/include/linux" AR="/bin/ar" AS="/bin/as" LD="/bin/ld" NM="/bin/nm" CC="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc" GCC="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc" CXX="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/g++" CPP="/bin/cpp" CPPFLAGS="-I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" CFLAGS="-O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" CXXFLAGS="-O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" LDFLAGS="-L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -L/usr/bin -L/cygdrive/c/Windows/system32 -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib" PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 PKG_CONFIG="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/pkg-config" PKG_CONFIG_SYSROOT_DIR="/" PKG_CONFIG_LIBDIR="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib/pkgconfig:/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/share/pkgconfig" PERLLIB="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib/perl" LD_LIBRARY_PATH="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib:/usr/bin:/cygdrive/c/Windows/system32" CFLAGS="-O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" LDFLAGS="-L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -L/usr/bin -L/cygdrive/c/Windows/system32 -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib" ./configure --prefix="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr" --sysconfdir="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/etc" --enable-shared --disable-static --disable-gtk-doc --disable-doc --disable-docs --disable-documentation --with-xmlto=no --with-fop=no

去试试：

结果还是错误依旧：CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$ PATH="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/bin:/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin:/bin:/home/CLi/develop/crosstool-ng/x-tools/arm-xscale-linux-gnueabi/bin:/opt/crosstool-ng/bin:/home/CLi/develop/crosstool-ng/x-tools/armxscalecurl/bin:/usr/local/bin:/usr/bin:/cygdrive/d/tmp/dev_install_root/Python27_x64:/cygdrive/d/tmp/dev_install_root/Python27_x64/Lib/site-packages/PyQt4:/cygdrive/d/tmp/dev_install_root/Perl64/site/bin:/cygdrive/d/tmp/dev_install_root/Perl64/bin:/cygdrive/c/Program Files/Common Files/Microsoft Shared/Windows Live:/cygdrive/c/Program Files (x86)/Common Files/Microsoft Shared/Windows Live:/cygdrive/c/Windows/system32:/cygdrive/c/Windows:/cygdrive/c/Windows/System32/Wbem:/cygdrive/c/Windows/System32/WindowsPowerShell/v1.0:/cygdrive/c/Program Files (x86)/Microsoft SQL Server/100/Tools/Binn:/cygdrive/c/Program Files/Microsoft SQL Server/100/Tools/Binn:/cygdrive/c/Program Files/Microsoft SQL Server/100/DTS/Binn:/cygdrive/d/tmp/WordPress/mysql/mysql-5.5.18/MySQL/MySQL Server 5.5/bin:/cygdrive/d/tmp/WordPress/DevRoot/MySQL/MySQL Server 5.5/bin:/cygdrive/d/tmp/WordPress/DevRoot/php-5.3.6-Win32-VC9-x64:/cygdrive/d/tmp/WordPress/DevRoot/php-5.3.6-Win32-VC9-x64/ext:/cygdrive/d/tmp/WordPress/DevRoot/Python27:/cygdrive/c/Program Files (x86)/Common Files/Acronis/SnapAPI:/cygdrive/c/Program Files (x86)/Windows Live/Shared:/cygdrive/c/Program Files/Java/jdk1.7.0_11/bin:/home/CLi/develop/docbook/tools/fop/lib:/home/CLi/develop/docbook/tools/fop:/cygdrive/d/DevInstallRoot/FF/DD_IDE_1.1.2/TOK/BIN:/cygdrive/d/DevInstallRoot/FF/DD_IDE_1.2.0/TOK/BIN:/cygdrive/d/DevRoot/EmbeddedDevelop/trunk/Research/CLI/FF/FBK/develop/tools/develop-tools:/cygdrive/d/tmp/WordPress/DevRoot/Python27/Scripts:/cygdrive/d/tmp/dev_install_root/PostgreSQL/8.3/bin:/cygdrive/d/tmp/dev_install_root/ant/apache-ant-1.8.4/bin:/cygdrive/c/Program Files/nodejs:/cygdrive/c/Program Files/Microsoft/Web Platform Installer:/cygdrive/c/Program Files/TortoiseSVN/bin:/cygdrive/d/DevRoot/IndustrialMobileAutomation/HandheldDataSetter/ANTLR/batchFile:/cygdrive/c/Program Files (x86)/QuickTime/QTSystem:/cygdrive/d/tmp/tmp_dev_root/android/adt-bundle-windows/sdk/platform-tools:/cygdrive/d/tmp/dev_install_root/Tesseract-OCR:/cygdrive/d/tmp/dev_install_root/jython2.5.3/bin:/cygdrive/d/devinstallroot/gnuarm/bin:/cygdrive/d/tmp/dev_install_root/HTML Help Workshop:/cygdrive/c/Users/CLi/AppData/Roaming/npm:/usr/lib/lapack:/opt/gcc-4.0.4-glibc-2.3.6-kernel-2.6.17/sysroot-arm-xscale-linux-gnu/usr/include:/opt/gcc-4.0.4-glibc-2.3.6-kernel-2.6.17/sysroot-arm-xscale-linux-gnu/usr/include/linux" AR="/bin/ar" AS="/bin/as" LD="/bin/ld" NM="/bin/nm" CC="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc" GCC="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc" CXX="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/g++" CPP="/bin/cpp" CPPFLAGS="-I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" CFLAGS="-O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" CXXFLAGS="-O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" LDFLAGS="-L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -L/usr/bin -L/cygdrive/c/Windows/system32 -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib" PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 PKG_CONFIG="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/pkg-config" PKG_CONFIG_SYSROOT_DIR="/" PKG_CONFIG_LIBDIR="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib/pkgconfig:/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/share/pkgconfig" PERLLIB="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib/perl" LD_LIBRARY_PATH="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib:/usr/bin:/cygdrive/c/Windows/system32" CFLAGS="-O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" LDFLAGS="-L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -L/usr/bin -L/cygdrive/c/Windows/system32 -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib" ./configure --prefix="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr" --sysconfdir="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/etc" --enable-shared --disable-static --disable-gtk-doc --disable-doc --disable-docs --disable-documentation --with-xmlto=no --with-fop=no

configure: WARNING: unrecognized options: --disable-gtk-doc, --disable-doc, --disable-docs, --disable-documentation, --with-xmlto, --with-fop

## -------------------------- ##

## Configuring libtool 2.2.10 ##

## -------------------------- ##

checking for a BSD-compatible install... /bin/install -c

checking whether build environment is sane... yes

checking for a thread-safe mkdir -p... /bin/mkdir -p

checking for gawk... gawk

checking whether make sets $(MAKE)... yes

checking whether subdir libobjs are useable... yes

checking for gcc... /home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /bin/gcc

checking whether the C compiler works... no

configure: error: in `/home/CLi/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10':

configure: error: C compiler cannot create executables

See `config.log' for more details.

CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05/output/build/host-libtool-2.2.10

$

此时，可以看到：

D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\output\build\host-libtool-2.2.10\config.log

中已经是加了上面的路径了：ac_cv_env_LDFLAGS_value='-L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -L/usr/bin -L/cygdrive/c/Windows/system32 -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib'

但是还是没解决问题。

后记：