[Mesa-dev] Understanding GLX_INDIRECT_RENDERING (libOSMesa fails to link due to gl_dispatch_stub*)

[Jeremy Huddleston]

I'm having trouble understanding why GLX_INDIRECT_RENDERING changes what is built into glapi.  I assumed that glapi was agnostic to the actual implementation, so why does glapi care about GLX_INDIRECT_RENDERING?

I'm trying to build mesa with support for (only) indirect rendering on darwin.  libGL (src/glx, not src/glx/apple) builds fine, but libOSMesa fails to build due to missing symbols.  I'm guessing osmesa.c needs the same GLX_INDIRECT_RENDERING hunk as in src/gallium/targets/libgl-xlib/xlib.c (6678f597e7c9ba784c9af0c86cfc6821558bcaa7) and src/mesa/drivers/x11/glxapi.c (888429360a30090b9ecd17bfd160a88141195235), but I'd like to know *why* this is happening, so I have a better understanding of how to make an indirect+applegl mesa.

Thanks,
Jeremy

/bin/sh ../../../../bin/mklib -o OSMesa -linker 'g++' -ldflags '' \
		-major 7 -minor 11 -patch 0 \
		-install ../../../../lib -cplusplus  \
		-id /opt/X11/lib/libOSMesa.7.dylib \
		-L../../../../lib -lGL osmesa.o ../../../../src/mesa/libmesa.a ../../../../src/mapi/glapi/libglapi.a ../../../../src/glsl/libglsl.a
mklib: Making Darwin shared library:  libOSMesa.7.11.dylib
Undefined symbols for architecture x86_64:
  "_gl_dispatch_stub_356", referenced from:
      _static_functions in libglapi.a(glapi_getproc.o)
  "_gl_dispatch_stub_357", referenced from:
      _static_functions in libglapi.a(glapi_getproc.o)
  "_gl_dispatch_stub_358", referenced from:
      _static_functions in libglapi.a(glapi_getproc.o)
  "_gl_dispatch_stub_359", referenced from:
      _static_functions in libglapi.a(glapi_getproc.o)
  "_gl_dispatch_stub_361", referenced from:
      _static_functions in libglapi.a(glapi_getproc.o)
  "_gl_dispatch_stub_362", referenced from:
      _static_functions in libglapi.a(glapi_getproc.o)
  "_gl_dispatch_stub_363", referenced from:
      _static_functions in libglapi.a(glapi_getproc.o)
  "_gl_dispatch_stub_364", referenced from:
      _static_functions in libglapi.a(glapi_getproc.o)
  "_gl_dispatch_stub_365", referenced from:
      _static_functions in libglapi.a(glapi_getproc.o)
  "_gl_dispatch_stub_366", referenced from:
      _static_functions in libglapi.a(glapi_getproc.o)
ld: symbol(s) not found for architecture x86_64