qt5base-lts/CMakeLists.txt
Leander Beernaert 9968a211f9 CMake: Fix pkgconfig calls when cross-compiling
When cross-compiling with CMake, before this patch pkgconfig calls would
find libraries which are part of the host system and not the target
system.

The current approach used is based of the discussion present in
https://gitlab.kitware.com/cmake/cmake/-/merge_requests/4478, and should
be considered a temporary solution until the issue is properly addressed
in upstream CMake.

Change-Id: I535d4d48c2a5d34689082b80501b3b6ae30d7845
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-03-26 12:46:16 +01:00

120 lines
3.9 KiB
CMake

# special case skip regeneration
cmake_minimum_required(VERSION 3.15.0)
# Run auto detection routines
include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/QtAutoDetect.cmake)
if (CMAKE_CROSSCOMPILING AND CMAKE_SYSROOT)
# When cross compiling with CMake any calls to pkg_check_modules() will
# search into the host system instead of the target sysroot.
# The current work around is based on the discussion found at
# https://gitlab.kitware.com/cmake/cmake/-/merge_requests/4478
set(ENV{PKG_CONFIG_DIR} "")
set(ENV{PKG_CONFIG_LIBDIR} "${CMAKE_SYSROOT}/usr/lib/${CMAKE_LIBRARY_ARCHITECTURE}/pkgconfig")
set(ENV{PKG_CONFIG_SYSROOT_DIR} ${CMAKE_SYSROOT})
endif()
project(QtBase
VERSION 6.0.0
DESCRIPTION "Qt Base Libraries"
HOMEPAGE_URL "https://qt.io/"
LANGUAGES CXX C ASM
)
if(NOT QT_BUILD_STANDALONE_TESTS)
## Add some paths to check for cmake modules:
list(PREPEND CMAKE_MODULE_PATH
"${CMAKE_CURRENT_SOURCE_DIR}/cmake"
"${CMAKE_CURRENT_SOURCE_DIR}/cmake/3rdparty/extra-cmake-modules/find-modules"
"${CMAKE_CURRENT_SOURCE_DIR}/cmake/3rdparty/kwin"
)
if(MACOS)
# Add module directory to pick up custom Info.plist template
list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/macos")
endif()
## Find the build internals package.
set(QT_BUILD_INTERNALS_SKIP_CMAKE_MODULE_PATH_ADDITION TRUE)
list(PREPEND CMAKE_PREFIX_PATH
"${CMAKE_CURRENT_SOURCE_DIR}/cmake"
)
find_package(QtBuildInternals CMAKE_FIND_ROOT_PATH_BOTH)
unset(QT_BUILD_INTERNALS_SKIP_CMAKE_MODULE_PATH_ADDITION)
else()
# When building standalone tests, an istalled BuildInternals package already exists.
find_package(Qt6 REQUIRED COMPONENTS BuildInternals CMAKE_FIND_ROOT_PATH_BOTH)
endif()
qt_build_repo_begin()
if(NOT QT_BUILD_STANDALONE_TESTS)
## Should this Qt be static or dynamically linked?
option(BUILD_SHARED_LIBS "Build Qt statically or dynamically" ON)
set(QT_BUILD_SHARED_LIBS ${BUILD_SHARED_LIBS})
## Should this Qt be built with Werror?
option(WARNINGS_ARE_ERRORS "Build Qt with warnings as errors" ${FEATURE_developer_build})
## QtBase specific configure tests:
include(QtBaseConfigureTests)
## Build System tests:
include(QtBaseCMakeTesting)
## Targets for global features, etc.:
include(QtBaseGlobalTargets)
## Set language standards after QtBaseGlobalTargets, because that's when the relevant
## feature variables are available.
qt_set_language_standards()
#include CoreMacros() for qt6_generate_meta_types()
include(src/corelib/Qt6CoreMacros.cmake)
## Setup documentation
add_subdirectory(doc)
## Visit all the directories:
add_subdirectory(src)
endif()
if(BUILD_TESTING)
add_subdirectory(tests)
if(QT_NO_MAKE_TESTS)
set_property(DIRECTORY tests PROPERTY EXCLUDE_FROM_ALL TRUE)
endif()
endif()
if(NOT QT_BUILD_STANDALONE_TESTS)
if(QT_WILL_BUILD_TOOLS)
add_subdirectory(qmake)
endif()
# As long as we use the mkspecs (for qplatformdefs.h), we need to always
# install it, especially when cross-compiling.
set(mkspecs_install_dir "${INSTALL_MKSPECSDIR}")
qt_path_join(mkspecs_install_dir ${QT_INSTALL_DIR} ${mkspecs_install_dir})
file(GLOB mkspecs_subdirs
LIST_DIRECTORIES TRUE
"${PROJECT_SOURCE_DIR}/mkspecs/*")
foreach(entry IN LISTS mkspecs_subdirs)
if (IS_DIRECTORY ${entry})
qt_copy_or_install(DIRECTORY "${entry}"
DESTINATION ${mkspecs_install_dir})
else()
qt_copy_or_install(FILES "${entry}"
DESTINATION ${mkspecs_install_dir})
endif()
endforeach()
endif()
qt_build_repo_end()
if(NOT QT_BUILD_STANDALONE_TESTS AND BUILD_EXAMPLES)
add_subdirectory(examples)
if(QT_NO_MAKE_EXAMPLES)
set_property(DIRECTORY examples PROPERTY EXCLUDE_FROM_ALL TRUE)
endif()
endif()