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[configure] Fallback to detect OpenGL headers

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When not using mesa, we can not rely on a pkgconfig file, so just rely on
the presence of the OpenGL headers instead.
This commit is contained in:
Chris Wilson 2009-09-13 23:16:57 +01:00
parent 71c3b2888c
commit 9ad26f74b0
1 changed files with 8 additions and 3 deletions
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11
configure.ac
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@ -242,8 +242,13 @@ CAIRO_ENABLE_FUNCTIONS(png, PNG, yes, [
dnl ===========================================================================
CAIRO_ENABLE_SURFACE_BACKEND(gl, OpenGL, no, [
gl_REQUIRES="gl"
PKG_CHECK_MODULES(gl, $gl_REQUIRES, , [AC_MSG_RESULT(no)
use_gl="no (requires gl.pc)"])
PKG_CHECK_MODULES(gl, $gl_REQUIRES,, [
dnl Fallback to searching for headers
AC_CHECK_HEADER(GL/gl.h,, [use_gl="no (gl.pc nor OpenGL headers not found)"])
if test "x$use_gl" = "xyes"; then
gl_NONPKGCONFIG_CFLAGS=
gl_NONPKGCONFIG_LIBS="-lGL"
fi])
AC_CHECK_LIB(GLEW, glewInit, [
AC_CHECK_HEADER(GL/glew.h, [], [
@ -252,7 +257,7 @@ CAIRO_ENABLE_SURFACE_BACKEND(gl, OpenGL, no, [
], [
use_gl="no (requires glew http://glew.sourceforge.net/)"
])
gl_NONPKGCONFIG_LIBS="-lGLEW"
gl_NONPKGCONFIG_LIBS="-lGLEW $gl_NONPKGCONFIG_LIBS"
need_glx_functions=yes
need_eagle_functions=yes
])