ComputationalBiomechanicsLab/opensim-creator
third_party/SDL/cmake/sdlchecks.cmake
:741
check_c_source_compiles("
#include <GLES/gl.h>
#include <GLES/glext.h>
int main (int argc, char** argv) { return 0; }" HAVE_OPENGLES_V1)