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#!/bin/bash
INFILE=$1
OUTFILE=$2
generate_macros() {
grep gl.*ProcPtr /System/Library/Frameworks/OpenGL.framework/Headers/gl{,ext}.h | sed 's:^.*\(gl.*Ptr\).*$:\1:' | sort -u | perl -ne 'chomp($_); $s = "PFN".uc($_); $s =~ s/PROCPTR/PROC/; print "#define ".$_." ".$s."\n"'
}
generate_function_pointers() {
{
echo "#define GL_GLEXT_FUNCTION_POINTERS 1"
echo "#define GL_GLEXT_LEGACY 1"
generate_macros
echo '#include "/System/Library/Frameworks/OpenGL.framework/Headers/gl.h"'
} | ${CC:-gcc} -E - | grep typedef.*PFN
}
cat ${INFILE} | while IFS= read LINE ; do
case $LINE in
"@CGL_MESA_COMPAT_MACROS@")
generate_macros
;;
"@CGL_MESA_FUNCTION_POINTERS@")
if ! grep -q GL_GLEXT_PROTOTYPES /System/Library/Frameworks/OpenGL.framework/Headers/gl.h ; then
generate_function_pointers
fi
;;
*)
printf "${LINE}\n"
;;
esac
done > ${OUTFILE}
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