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include(CheckCXXSourceCompiles)
find_library(GLESv2_LIBRARY NAMES GLESv2)
find_path(GLESv2_INCLUDE_DIR NAMES "GLES2/gl2.h" DOC "The OpenGLES 2 include path")
set(_libraries "${CMAKE_REQUIRED_LIBRARIES}")
list(APPEND CMAKE_REQUIRED_LIBRARIES "${GLESv2_LIBRARY}")
set(_includes "${CMAKE_REQUIRED_INCLUDES}")
list(APPEND CMAKE_REQUIRED_INCLUDES "${GLESv2_INCLUDE_DIR}")
check_cxx_source_compiles("
#ifdef __APPLE__
# include <OpenGLES/ES2/gl.h>
#else
# define GL_GLEXT_PROTOTYPES
# include <GLES2/gl2.h>
#endif
int main(int argc, char *argv[]) {
glUniform1f(1, GLfloat(1.0));
glClear(GL_COLOR_BUFFER_BIT);
}" HAVE_GLESv2)
set(CMAKE_REQUIRED_LIBRARY "${_libraries}")
unset(_libraries)
set(CMAKE_REQUIRED_INCLUDES "${_includes}")
unset(_includes)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(GLESv2 DEFAULT_MSG GLESv2_INCLUDE_DIR GLESv2_LIBRARY HAVE_GLESv2)
mark_as_advanced(GLESv2_INCLUDE_DIR GLESv2_LIBRARY HAVE_GLESv2)
if(GLESv2_FOUND AND NOT TARGET GLESv2::GLESv2)
add_library(GLESv2::GLESv2 UNKNOWN IMPORTED)
set_target_properties(GLESv2::GLESv2 PROPERTIES
IMPORTED_LOCATION "${GLESv2_LIBRARY}"
INTERFACE_INCLUDE_DIRECTORIES "${GLESv2_INCLUDE_DIR}")
endif()
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