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qt5base-lts/cmake/FindWrapOpenGL.cmake

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Fix Desktop GL/EGL/GLESv2 linkage 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>
2019-02-11 15:58:26 +00:00
# Logic derived from mkspecs/features/unix/opengl.prf: prefer GLESv2 over GL
if(TARGET WrapOpenGL)
cmake: set WrapOpenGL_FOUND to ON Otherwise the cmake summary at the end says -- The following packages have not been found: * WrapOpenGL It's OpenGL or GLESv2 that will show there as missing if needed Change-Id: I182f1299b86e1a4e24762d0bad6533c6136cbbcc Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
2019-02-12 16:12:25 +00:00
set(WrapOpenGL_FOUND ON)
Fix Desktop GL/EGL/GLESv2 linkage 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>
2019-02-11 15:58:26 +00:00
return()
endif()
add_library(WrapOpenGL INTERFACE)
if(QT_FEATURE_opengles2)
find_package(GLESv2)
target_link_libraries(WrapOpenGL INTERFACE GLESv2::GLESv2)
else()
find_package(OpenGL)
target_link_libraries(WrapOpenGL INTERFACE OpenGL::GL)
endif()
cmake: set WrapOpenGL_FOUND to ON Otherwise the cmake summary at the end says -- The following packages have not been found: * WrapOpenGL It's OpenGL or GLESv2 that will show there as missing if needed Change-Id: I182f1299b86e1a4e24762d0bad6533c6136cbbcc Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
2019-02-12 16:12:25 +00:00
set(WrapOpenGL_FOUND ON)
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