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cmake: sdlchecks.cmake: pass cflags to the appropriate cmake variable

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If egl.pc sets at least two macros as the i.MX Vivante driver does, e.g.:
| Cflags: -I${includedir} -DLINUX -DWL_EGL_PLATFORM

then we get the following error during configuration:

| -- Performing Test HAVE_OPENGL_EGL
| CMake Error: Parse error in command line argument: WL_EGL_PLATFORM
|  Should be: VAR:type=value

If one changes to add a value to the macro, e.g.
| Cflags: -I${includedir} -DLINUX=1 -DWL_EGL_PLATFORM=1
then cmake does not error out but the macro is not passed to the
C compiler.

CMAKE_REQUIRED_FLAGS is the wrong variable to pass the CFLAGS in,
CMAKE_REQUIRED_DEFINITIONS should be used.

Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
This commit is contained in:
Max Krummenacher 2022-01-10 21:52:02 +00:00 committed by Sam Lantinga
parent ea0bca573d
commit c3a7cc34fb
1 changed files with 1 additions and 2 deletions
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3
cmake/sdlchecks.cmake
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@ -817,8 +817,7 @@ endmacro()
macro(CheckEGL)
if (SDL_OPENGL OR SDL_OPENGLES)
pkg_check_modules(EGL egl)
string(REPLACE "-D_THREAD_SAFE;" "-D_THREAD_SAFE=1;" EGL_CFLAGS "${EGL_CFLAGS}")
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${EGL_CFLAGS}")
set(CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS} ${EGL_CFLAGS}")
check_c_source_compiles("
#define EGL_API_FB
#define MESA_EGL_NO_X11_HEADERS