speed-dreams/speed-dreams-code
speed-dreams/speed-dreams-code
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3rdParty-devel: Install OpenGL headers only if needed

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MinGW already distributes OpenGL headers and libraries under different
directories. In such cases, it is more sensible to rely on those than
the in-tree copies maintained by the project.

Note that, for some unknown reason, the include directories for the
OpenGL::GL target are not filled, even if find_package(OpenGL) is
successful and the library is found. Therefore, this commit works around
this limitation by finding GL/gl.h from a possible list of directories
inside the toolchain.


git-svn-id: https://svn.code.sf.net/p/speed-dreams/code/trunk@9606 30fe4595-0a0c-4342-8851-515496e4dcbd

Former-commit-id: f663966c6bd42cfcb2b5135b871bb2e2e1636994
Former-commit-id: 92e313ea0f1edc8e030021225dec2c347b69f86f
This commit is contained in:
xavi92 2024-10-27 08:08:58 +00:00
parent 4e08c6ae72
commit 826e02b48d
1 changed files with 39 additions and 4 deletions
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43
packaging/3rdParty-devel/CMakeLists.txt
View file

@ -156,14 +156,49 @@ else()
set(SUPER_BUILD_POSTFIX "") set(SUPER_BUILD_POSTFIX "")
endif() endif()
# OpenGL extensions (Windows only??) # OpenGL extensions
message(STATUS "OpenGL extensions (Windows only??)") find_package(OpenGL)
if(WIN32 AND OPTION_OPENGL_HEADERS)
if(NOT TARGET OpenGL::GL)
message(STATUS "Copying in-tree OpenGL headers")
ExternalProject_Add(OpenGL-headers ExternalProject_Add(OpenGL-headers
URL ${CMAKE_CURRENT_SOURCE_DIR}/patches/openglheaders.zip URL ${CMAKE_CURRENT_SOURCE_DIR}/patches/openglheaders.zip
URL_HASH SHA256=344debe6e65629d70020b6da056255de56c7d4fe48194336ea2cb896fc1b545b URL_HASH SHA256=344debe6e65629d70020b6da056255de56c7d4fe48194336ea2cb896fc1b545b
CMAKE_ARGS ${EXTERNALS_CMAKE_ARGS}) CMAKE_ARGS ${EXTERNALS_CMAKE_ARGS})
endif(WIN32 AND OPTION_OPENGL_HEADERS) else()
if(TARGET OpenGL::GL)
add_library(OpenGL-headers ALIAS OpenGL::GL)
if(MINGW AND NOT OPENGL_INCLUDE_DIR)
get_filename_component(MINGW_BINDIR "${CMAKE_CXX_COMPILER}" PATH)
get_filename_component(MINGW_BINDIR "${MINGW_BINDIR}/../" REALPATH)
if(CMAKE_CROSSCOMPILING)
find_path(OPENGL_INCLUDE_DIR GL/gl.h
REQUIRED
NO_CMAKE_SYSTEM_PATH
NO_DEFAULT_PATH
NO_CMAKE_PATH
NO_CMAKE_INSTALL_PREFIX
HINTS
"${MINGW_BINDIR}/include"
"${MINGW_BINDIR}/*/include"
)
else()
find_path(OPENGL_INCLUDE_DIR GL/gl.h
REQUIRED
HINTS
"${MINGW_BINDIR}/include"
"${MINGW_BINDIR}/*/include"
)
endif()
# FindOpenGL.cmake seems not to set this property under
# some circumstances.
target_include_directories(OpenGL::GL INTERFACE ${OPENGL_INCLUDE_DIR})
endif()
endif()
endif()
if(OPTION_ZLIB) if(OPTION_ZLIB)
ExternalProject_Add(${ZLIB_PROJECT} ExternalProject_Add(${ZLIB_PROJECT}