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FindGLUT: Fix GLUT_INCLUDE_DIRS with pkg-config and /usr/include

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Fixes: #23474
This commit is contained in:
Letu Ren
2022-05-11 23:29:26 +08:00
committed by Brad King
parent 364fde65ee
commit 8041ca5df0
1 changed files with 14 additions and 0 deletions
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14
Modules/FindGLUT.cmake
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@@ -96,7 +96,21 @@ endfunction()
find_package(PkgConfig QUIET)
if(PKG_CONFIG_FOUND)
# Tell pkg-config not to strip any -I flags to make sure GLUT_INCLUDE_DIRS
# will be defined.
if(DEFINED ENV{PKG_CONFIG_ALLOW_SYSTEM_CFLAGS})
set(_pkgconfig_allow_system_cflags_old "$ENV{PKG_CONFIG_ALLOW_SYSTEM_CFLAGS}")
else()
unset(_pkgconfig_allow_system_cflags_old)
endif()
set(ENV{PKG_CONFIG_ALLOW_SYSTEM_CFLAGS} 1)
pkg_check_modules(GLUT QUIET glut)
if(DEFINED _pkgconfig_allow_system_cflags_old)
set(ENV{PKG_CONFIG_ALLOW_SYSTEM_CFLAGS} "${_pkgconfig_allow_system_cflags_old}")
unset(_pkgconfig_allow_system_cflags_old)
else()
unset(ENV{PKG_CONFIG_ALLOW_SYSTEM_CFLAGS})
endif()
if(NOT GLUT_FOUND)
pkg_check_modules(GLUT QUIET freeglut)
endif()