ubuntu 安装opendr失败_python 安装opendr 报错OSMesa

### 报错/ERROR：

```

opendr/contexts/OSMesa/include/GL/glext.h:5794:21: note: expected ‘const GLchar ** {aka const char **}’ but argument is of type ‘char **’

GLAPI void APIENTRY glShaderSource (GLuint shader, GLsizei count, const GLchar* *string, const GLint *length);

^~~~~~~~~~~~~~

/home/chandini/anaconda3/envs/NBF/compiler_compat/ld: cannot find -lOSMesa```

### need to install Mesa

#### Ubuntu18.04 and above:

```

apt install *OSmesa*

```

#### Ubuntu16.04 and low

--

1. Download source: (i using mesa-19.2.0 )

https://gitlab.freedesktop.org/mesa/mesa

2. build source:

```

meson configure build/ -Dosmesa=classic

ninja -C build/

ninja -C build/ install

```

3. success result:

./build/src/mesa/drivers/osmesa/libOSMesa.so