qt5base-lts/cmake/QtBuildInternals/QtBuildInternalsConfig.cmake
Alexandru Croitor 6c00d9075e Use $$source_path/qtbase/cmake modules when doing non-prefix builds
This is similar to qmake, where the .prf files from the source
location of qtbase/mkspecs are used in a non-prefix build.
This means that if a developer changes the source QtBuild.cmake,
and then runs make in qtdeclarative, cmake will reconfigure
qtdeclarative because the timestamp of QtBuild.cmake changed.

Before this change you first had to make && make install in the
qtbase build directory, before qtdeclarative saw the modified
QtBuild.cmake.

This change also makes the module paths be prepended to
CMAKE_MODULE_PATH instead of appended, which means they will
take precedence to any path provided via command line.

Change-Id: I9178d5183a95b3b67bfe1b1fe91d3d3371ffe5c5
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
2019-09-06 09:33:38 +00:00

162 lines
5.6 KiB
CMake

if (CMAKE_VERSION VERSION_LESS 3.1.0)
message(FATAL_ERROR "Qt requires at least CMake version 3.1.0")
endif()
######################################
#
# Macros for building Qt modules
#
######################################
if(EXISTS "${CMAKE_CURRENT_LIST_DIR}/QtBuildInternalsExtra.cmake")
include(${CMAKE_CURRENT_LIST_DIR}/QtBuildInternalsExtra.cmake)
endif()
macro(qt_set_up_build_internals_paths)
# Set up the paths for the cmake modules located in the build dir. Prepend, so the paths are
# least important compared to the source dir ones, but more important than command line
# provided ones.
set(QT_CMAKE_MODULE_PATH "${QT_BUILD_INTERNALS_PATH}/../${QT_CMAKE_EXPORT_NAMESPACE}")
list(PREPEND CMAKE_MODULE_PATH "${QT_CMAKE_MODULE_PATH}")
# When doing a non-prefix build, prepend the qtbase source cmake directory to CMAKE_MODULE_PATH,
# so that if a change is done in cmake/QtBuild.cmake, it gets automatically picked up when
# building qtdeclarative, rather than having to build qtbase first (which will copy
# QtBuild.cmake to the build dir). This is similar to qmake non-prefix builds, where the
# source qtbase/mkspecs directory is used.
if(NOT QT_WILL_INSTALL)
list(PREPEND CMAKE_MODULE_PATH "${QT_SOURCE_TREE}/cmake")
endif()
# If the repo has its own cmake modules, include those in the module path.
if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
list(PREPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
endif()
endmacro()
macro(qt_build_repo_begin)
if(${ARGC} EQUAL 1 AND "${ARGV0}" STREQUAL "SKIP_CMAKE_MODULE_PATH_ADDITION")
# No-op.
else()
qt_set_up_build_internals_paths()
endif()
# Qt specific setup common for all modules:
include(QtSetup)
include(FeatureSummary)
# Optionally include a repo specific Setup module.
include(${PROJECT_NAME}Setup OPTIONAL)
# Find Apple frameworks if needed.
qt_find_apple_system_frameworks()
endmacro()
macro(qt_build_repo_end)
# Delayed actions on some of the Qt targets:
include(QtPostProcess)
# Install the repo-specific cmake find modules.
qt_path_join(__qt_repo_install_dir ${QT_CONFIG_INSTALL_DIR} ${INSTALL_CMAKE_NAMESPACE})
if(NOT PROJECT_NAME STREQUAL "QtBase")
if (EXISTS cmake)
qt_copy_or_install(DIRECTORY cmake/
DESTINATION "${__qt_repo_install_dir}"
FILES_MATCHING PATTERN "Find*.cmake"
)
endif()
endif()
# Print a feature summary:
feature_summary(WHAT PACKAGES_FOUND
REQUIRED_PACKAGES_NOT_FOUND
RECOMMENDED_PACKAGES_NOT_FOUND
OPTIONAL_PACKAGES_NOT_FOUND
RUNTIME_PACKAGES_NOT_FOUND
FATAL_ON_MISSING_REQUIRED_PACKAGES)
endmacro()
macro(qt_build_repo)
qt_build_repo_begin(${ARGN})
# If testing is enabled, try to find the qtbase Test package.
# Do this before adding src, because there might be test related conditions
# in source.
if (BUILD_TESTING)
find_package(Qt6 ${PROJECT_VERSION} CONFIG REQUIRED COMPONENTS Test)
endif()
## Decide whether tools will be built.
qt_check_if_tools_will_be_built()
if (EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/src/CMakeLists.txt")
add_subdirectory(src)
endif()
if (EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/tools/CMakeLists.txt")
add_subdirectory(tools)
endif()
if (BUILD_TESTING AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/tests/CMakeLists.txt")
add_subdirectory(tests)
endif()
qt_build_repo_end()
if (BUILD_EXAMPLES AND BUILD_SHARED_LIBS AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/examples/CMakeLists.txt")
add_subdirectory(examples)
endif()
endmacro()
macro(qt_set_up_standalone_tests_build)
qt_set_up_build_internals_paths()
include(QtSetup)
qt_find_apple_system_frameworks()
qt_check_if_tools_will_be_built()
endmacro()
macro(qt_build_tests)
if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/auto/CMakeLists.txt")
add_subdirectory(auto)
endif()
if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/benchmarks/CMakeLists.txt")
add_subdirectory(benchmarks)
endif()
endmacro()
macro(qt_examples_build_begin)
# It is part of a Qt build => Use the CMake config files from the binary dir
list(APPEND CMAKE_PREFIX_PATH "${CMAKE_BINARY_DIR}")
# Also make sure the CMake config files do not recreate the already-existing targets
set(QT_NO_CREATE_TARGETS TRUE)
set(BACKUP_CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ${CMAKE_FIND_ROOT_PATH_MODE_PACKAGE})
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE "BOTH")
endmacro()
macro(qt_examples_build_end)
# We use AUTOMOC/UIC/RCC in the examples. Make sure to not fail on a fresh Qt build, that e.g. the moc binary does not exist yet.
# This function gets all targets below this directory
function(get_all_targets _result _dir)
get_property(_subdirs DIRECTORY "${_dir}" PROPERTY SUBDIRECTORIES)
foreach(_subdir IN LISTS _subdirs)
get_all_targets(${_result} "${_subdir}")
endforeach()
get_property(_sub_targets DIRECTORY "${_dir}" PROPERTY BUILDSYSTEM_TARGETS)
set(${_result} ${${_result}} ${_sub_targets} PARENT_SCOPE)
endfunction()
get_all_targets(targets "${CMAKE_CURRENT_SOURCE_DIR}")
foreach(target ${targets})
qt_autogen_tools(${target} ENABLE_AUTOGEN_TOOLS "moc" "uic" "rcc")
endforeach()
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ${BACKUP_CMAKE_FIND_ROOT_PATH_MODE_PACKAGE})
endmacro()
if (ANDROID)
include(${CMAKE_CURRENT_LIST_DIR}/QtBuildInternalsAndroid.cmake)
endif()