[Mesa-dev] Mesa symbol visibility

[Ian Romanick]

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Kevin H. Hobbs wrote:
> How is symbol visibility set up in mesa's shared objects?
> 
> When I do :
> 
> ./autogen.sh --with-driver=xlib --disable-gallium --enable-debug
> 
> I get for example :
> 
> $ nm lib/libGL.so | grep glDepthFunc
> 000000000020ce30 T glDepthFunc
> $ nm lib/libOSMesa.so | grep glDepthFunc
> 00000000001ca760 T glDepthFunc
> 
> As I understand it there is no way for these two libraries to be linked
> by the same application.
> 
> Is the visibility for glDepthFunc set in include/GL/gl.h with :
> 
> define GLAPI __attribute__((visibility("default")))
> 
> and :
> 
> 
> GLAPI void GLAPIENTRY glDepthFunc( GLenum func );
> 
> Is there no way to use say mklib's EXPORTS --version-script options to
> get only the right things in the right libraries?

Uh.. You can't link two different OpenGL libraries any more than you can
link two different C libraries (say, glibc and ulibc) that both export
printf.  glDepthFunc is part of the public interface of the library.
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