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@ -227,6 +227,15 @@
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# DEALINGS IN THE SOFTWARE. |
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# |
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# CMake policies used by FindMagnum are popped again at the end. |
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cmake_policy(PUSH) |
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# Prefer GLVND when finding OpenGL. If this causes problems (known to fail with |
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# NVidia drivers in Debian Buster, reported on 2019-04-09), users can override |
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# this by setting OpenGL_GL_PREFERENCE to LEGACY. |
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if(POLICY CMP0072) |
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cmake_policy(SET CMP0072 NEW) |
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endif() |
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# Corrade library dependencies |
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set(_MAGNUM_CORRADE_DEPENDENCIES ) |
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foreach(_magnum_component ${Magnum_FIND_COMPONENTS}) |
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@ -309,14 +318,6 @@ if(MAGNUM_BUILD_DEPRECATED)
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endif() |
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endif() |
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# OpenGL library preference. Prefer to use GLVND, since that's the better |
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# approach nowadays, but allow the users to override it from outside in case |
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# it is broken for some reason (Nvidia drivers in Debian's testing (Buster) -- |
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# reported on 2019-04-09). |
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if(NOT CMAKE_VERSION VERSION_LESS 3.10 AND NOT OpenGL_GL_PREFERENCE) |
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set(OpenGL_GL_PREFERENCE GLVND) |
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endif() |
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# Base Magnum library |
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if(NOT TARGET Magnum::Magnum) |
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add_library(Magnum::Magnum UNKNOWN IMPORTED) |
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@ -726,7 +727,7 @@ foreach(_component ${Magnum_FIND_COMPONENTS})
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INTERFACE_LINK_LIBRARIES ${CMAKE_DL_LIBS}) |
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endif() |
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# With GLVND (since CMake 3.11) we need to explicitly link to |
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# With GLVND (since CMake 3.10) we need to explicitly link to |
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# GLX/EGL because libOpenGL doesn't provide it. For EGL we have |
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# our own EGL find module, which makes things simpler. The |
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# upstream FindOpenGL is anything but simple. Also can't use |
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@ -773,7 +774,7 @@ foreach(_component ${Magnum_FIND_COMPONENTS})
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INTERFACE_LINK_LIBRARIES "--js-library ${MAGNUM_PLATFORM_JS}") |
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endif() |
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# With GLVND (since CMake 3.11) we need to explicitly link to |
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# With GLVND (since CMake 3.10) we need to explicitly link to |
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# GLX/EGL because libOpenGL doesn't provide it. For EGL we have |
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# our own EGL find module, which makes things simpler. The |
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# upstream FindOpenGL is anything but simple. Also can't use |
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@ -803,12 +804,19 @@ foreach(_component ${Magnum_FIND_COMPONENTS})
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set_property(TARGET Magnum::${_component} APPEND PROPERTY |
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INTERFACE_LINK_LIBRARIES ${X11_LIBRARIES}) |
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# With GLVND (since CMake 3.11) we need to explicitly link to |
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# With GLVND (since CMake 3.10) we need to explicitly link to |
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# GLX because libOpenGL doesn't provide it. Also can't use |
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# OpenGL_OpenGL_FOUND, because that one is set also if GLVND is |
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# *not* found. WTF. Also can't just check for |
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# OPENGL_opengl_LIBRARY because that's set even if |
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# OpenGL_GL_PREFERENCE is explicitly set to LEGACY. |
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# |
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# If MAGNUM_TARGET_GLES and MAGNUM_TARGET_EGL is set, these |
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# applications can be built only if GLVND is available as |
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# otherwise there would be a conflict between libGL and |
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# libGLES. Thus, if GLVND is not available, it won't link |
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# libGLX here, but that shouldn't be a problem since the |
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# application library won't exist either. |
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find_package(OpenGL) |
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if(OPENGL_opengl_LIBRARY AND OpenGL_GL_PREFERENCE STREQUAL GLVND) |
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set_property(TARGET Magnum::${_component} APPEND PROPERTY |
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@ -851,7 +859,7 @@ foreach(_component ${Magnum_FIND_COMPONENTS})
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# GLX context dependencies |
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if(_component STREQUAL GlxContext) |
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# With GLVND (since CMake 3.11) we need to explicitly link to |
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# With GLVND (since CMake 3.10) we need to explicitly link to |
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# GLX because libOpenGL doesn't provide it. Also can't use |
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# OpenGL_OpenGL_FOUND, because that one is set also if GLVND is |
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# *not* found. If GLVND is not used, link to X11 instead. Also |
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@ -890,7 +898,7 @@ foreach(_component ${Magnum_FIND_COMPONENTS})
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# GL library |
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elseif(_component STREQUAL GL) |
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if(NOT MAGNUM_TARGET_GLES OR (MAGNUM_TARGET_GLES AND NOT MAGNUM_TARGET_EGL AND NOT CORRADE_TARGET_IOS)) |
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# If the GLVND library (CMake 3.11+) was found, link to the |
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# If the GLVND library (CMake 3.10+) was found, link to the |
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# imported target. Otherwise (and also on all systems except |
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# Linux) link to the classic libGL. Can't use |
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# OpenGL_OpenGL_FOUND, because that one is set also if GLVND is |
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@ -1292,3 +1300,6 @@ if(MAGNUM_PLUGINS_RELEASE_DIR)
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set(MAGNUM_PLUGINS_SCENECONVERTER_RELEASE_DIR ${MAGNUM_PLUGINS_RELEASE_DIR}/sceneconverters) |
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set(MAGNUM_PLUGINS_AUDIOIMPORTER_RELEASE_DIR ${MAGNUM_PLUGINS_RELEASE_DIR}/audioimporters) |
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endif() |
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# Resets CMake policies set at the top of the file to not affect other code. |
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cmake_policy(POP) |
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Vladimír Vondruš
3 years ago