[Mesa-dev] [Bug 91724] GL/gl_mangle.h misses symbols from GLES/gl.h

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91724

--- Comment #6 from Frederic Devernay <frederic.devernay at m4x.org> ---
A script that builds a mangled osmesa up to the osmesa demo program is at:
https://github.com/devernay/osmesa-install

If you just want the swrast driver, set  osmesadriver=1 on line 19.

Here is the part that fixes gl_mangle.h.

echo "* fixing gl_mangle.h..."
# edit include/GL/gl_mangle.h, add ../GLES*/gl[0-9]*.h to the "files" variable
and change GLAPI in the grep line to GL_API
gles=
for h in GLES/gl.h GLES2/gl2.h GLES3/gl3.h GLES3/gl31.h GLES3/gl32.h; do
    if [ -f include/$h ]; then
        gles="$gles ../$h"
    fi
done
(cd include/GL; sed -e 's at gl.h glext.h at gl.h glext.h '"$gles"'@' -e
's@\^GLAPI@^GL_\\?API@' -i.orig gl_mangle.h)
(cd include/GL; sh ./gl_mangle.h > gl_mangle.h.new && mv gl_mangle.h.new
gl_mangle.h)

Just comment it if you want to test without it.

If you don't want to apply any of the provided patches (which fix actual issues
with the current version), just remove the patch directory.

Note that in the latest Mesa (13.0.1), GLES3/gl32.h has to be included too, or
there are two more undefined symbols (glBlendBarrier and
glPrimitiveBoundingBox). These should be mangled too. For safety, I just mangle
the entry points from all GL and GLES versions.

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