hw/xwin: Look for gl spec files in $(srcdir) or .
Tarballs include the downloaded gl spec files, which will end up in $(srcdir). But, git-based builds will not have them at all and will need to download them from opengl.org. They'll land in in the build directory instead of $(srcdir), and so we need to allow them to be in either place. This change checks for the files in $(srcdir), linking them to . if present. Otherwise, it downloads them from opengl.org. A suggested better solution is to have Mesa install these files somewhere. Signed-off-by: Keith Packard <keithp@keithp.com> Tested-by: Kristian Høgsberg <krh@bitplanet.net>
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					@ -45,10 +45,10 @@ wgl.tm:
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	wget http://www.opengl.org/registry/api/wgl.tm
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						wget http://www.opengl.org/registry/api/wgl.tm
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generated_gl_wrappers.c: gen_gl_wrappers.py gl.spec gl.tm
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					generated_gl_wrappers.c: gen_gl_wrappers.py gl.spec gl.tm
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	$(srcdir)/gen_gl_wrappers.py --spec=$(srcdir)/gl.spec --typemap=$(srcdir)/gl.tm --dispatch-header=$(top_srcdir)/glx/dispatch.h --staticwrappers >generated_gl_wrappers.c
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						$(srcdir)/gen_gl_wrappers.py --spec=`test -e gl.spec || echo $(srcdir)/`gl.spec --typemap=`test -e gl.tm || echo $(srcdir)/`gl.tm --dispatch-header=$(top_srcdir)/glx/dispatch.h --staticwrappers >generated_gl_wrappers.c
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generated_wgl_wrappers.c: gen_gl_wrappers.py wglext.spec wgl.tm
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					generated_wgl_wrappers.c: gen_gl_wrappers.py wglext.spec wgl.tm
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	$(srcdir)/gen_gl_wrappers.py --spec=$(srcdir)/wglext.spec --typemap=$(srcdir)/wgl.tm --prefix=wgl --preresolve >generated_wgl_wrappers.c
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						$(srcdir)/gen_gl_wrappers.py --spec=`test -e wglext.spec || echo $(srcdir)/`wglext.spec --typemap=`test -e wgl.tm || echo $(srcdir)/`wgl.tm --prefix=wgl --preresolve >generated_wgl_wrappers.c
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wglext.h:
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					wglext.h:
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	wget http://www.opengl.org/registry/api/wglext.h
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						wget http://www.opengl.org/registry/api/wglext.h
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