519ef817ff
This change fixes a few things in one go:
* cmake's FindOpenGL cannot be used reliably to detect EGL. So use a
custom module for that.
* Added a custom module for GLESv2 detection, as cmake's FindOpenGL
does not support that.
* Map CONFIG += opengl to a WrapOpenGL target, which links against
either GLESv2 or libGL - just like mkspecs/features/*/opengl.prf
* cmake's FindOpenGL remains in use solely to detect the availability
of desktop gl.
Change-Id: I9315e5ad1fd88e1b7dc7e920053e98fb51fea7fc
Reviewed-by: Volker Krause <volker.krause@kdab.com>
41 lines
1.2 KiB
CMake
41 lines
1.2 KiB
CMake
include(CheckCXXSourceCompiles)
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find_library(GLESv2_LIBRARY NAMES GLESv2)
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find_path(GLESv2_INCLUDE_DIR NAMES "GLES2/gl2.h" DOC "The OpenGLES 2 include path")
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set(_libraries "${CMAKE_REQUIRED_LIBRARIES}")
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list(APPEND CMAKE_REQUIRED_LIBRARIES "${GLESv2_LIBRARY}")
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set(_includes "${CMAKE_REQUIRED_INCLUDES}")
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list(APPEND CMAKE_REQUIRED_INCLUDES "${GLESv2_INCLUDE_DIR}")
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check_cxx_source_compiles("
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#ifdef __APPLE__
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# include <OpenGLES/ES2/gl.h>
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#else
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# define GL_GLEXT_PROTOTYPES
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# include <GLES2/gl2.h>
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#endif
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int main(int argc, char *argv[]) {
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glUniform1f(1, GLfloat(1.0));
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glClear(GL_COLOR_BUFFER_BIT);
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}" HAVE_GLESv2)
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set(CMAKE_REQUIRED_LIBRARY "${_libraries}")
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unset(_libraries)
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set(CMAKE_REQUIRED_INCLUDES "${_includes}")
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unset(_includes)
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(GLESv2 DEFAULT_MSG GLESv2_INCLUDE_DIR GLESv2_LIBRARY HAVE_GLESv2)
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mark_as_advanced(GLESv2_INCLUDE_DIR GLESv2_LIBRARY HAVE_GLESv2)
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if(GLESv2_FOUND AND NOT TARGET GLESv2::GLESv2)
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add_library(GLESv2::GLESv2 UNKNOWN IMPORTED)
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set_target_properties(GLESv2::GLESv2 PROPERTIES
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IMPORTED_LOCATION "${GLESv2_LIBRARY}"
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INTERFACE_INCLUDE_DIRECTORIES "${GLESv2_INCLUDE_DIR}")
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endif()
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