通过查看 toolchain/toolchain-external/ext-toolchain-wrapper.c 源文件,可以得知,设置BR_DEBUG_WRAPPER环境变量可以输出参数信息

进到 /home/lvdata/develop/class_by_os/linux/buildroot/out_of_build/armv5te_build_out/目录,

BR_DEBUG_WRAPPER=1  ./host/usr/bin/arm-none-linux-gnueabi-gcc

export BR_DEBUG_WRAPPER=1

./host/usr/bin/arm-none-linux-gnueabi-gcc


或者加到 out_of_build.sh脚本中


#!/bin/bash
export BR_DEBUG_WRAPPER=1
export LC_ALL=C
export LANG=C
#export BUILDROOT_DL_DIR="下载目录位置"
REPO_DIR=$(pwd)/../../buildroot_repos
echo "make -C ${REPO_DIR} O=$(pwd) $@"
make -C ${REPO_DIR}  O=$(pwd) $@
#make manual-txt
Executing /home/lvdata/develop/class_by_os/linux/buildroot/out_of_build/armv5te_build_out/host/opt/ext-toolchain/bin/arm-none-linux-gnueabi-gcc --sysroot /home/lvdata/develop/class_by_os/linux/buildroot/out_of_build/armv5te_build_out/host/usr/arm-buildroot-linux-gnueabi/sysroot -march=armv5te -mtune=arm926ej-s -mabi=aapcs-linux -msoft-float -marm -pipe -mfloat-abi=soft

可以看到使用的是arm926ej-s的cpu架构