qt5base-lts/cmake/QtSetup.cmake
Alexandru Croitor d1c825ae8c CMake: Temporarily disable building external examples in prefix builds
There are issues when building examples as external projects in the CI
in child repos like qtsvg.

QEMU configurations fail to find some CMake Config files, Windows
configs fail to find libraries.

Until these issues are fixed, build examples in-tree (without using
external projects) like we did before.

Temporarily disables 98c89c8cc1

Pick-to: 6.2 6.3
Task-number: QTBUG-90820
Task-number: QTBUG-96232
Change-Id: Ia4b39812b27cfde5f5a103fd39cc1cb032842643
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
2022-02-03 19:29:44 +01:00

267 lines
10 KiB
CMake

## Set a default build type if none was specified
# Set the QT_IS_BUILDING_QT variable so we can verify whether we are building
# Qt from source
set(QT_BUILDING_QT TRUE CACHE
TYPE STRING "When this is present and set to true, it signals that we are building Qt from source.")
# Pre-calculate the developer_build feature if it's set by the user via INPUT_developer_build
if(NOT FEATURE_developer_build AND INPUT_developer_build
AND NOT "${INPUT_developer_build}" STREQUAL "undefined")
set(FEATURE_developer_build ON)
endif()
set(_default_build_type "Release")
if(FEATURE_developer_build)
set(_default_build_type "Debug")
endif()
# Reset content of extra build internal vars for each inclusion of QtSetup.
unset(QT_EXTRA_BUILD_INTERNALS_VARS)
# Save the global property in a variable to make it available to feature conditions.
get_property(QT_GENERATOR_IS_MULTI_CONFIG GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
message(STATUS "Setting build type to '${_default_build_type}' as none was specified.")
set(CMAKE_BUILD_TYPE "${_default_build_type}" CACHE STRING "Choose the type of build." FORCE)
set_property(CACHE CMAKE_BUILD_TYPE
PROPERTY STRINGS
"Debug" "Release" "MinSizeRel" "RelWithDebInfo") # Set the possible values for cmake-gui.
elseif(CMAKE_CONFIGURATION_TYPES)
message(STATUS "Building for multiple configurations: ${CMAKE_CONFIGURATION_TYPES}.")
message(STATUS "Main configuration is: ${QT_MULTI_CONFIG_FIRST_CONFIG}.")
if(CMAKE_NINJA_MULTI_DEFAULT_BUILD_TYPE)
message(STATUS
"Default build configuration set to '${CMAKE_NINJA_MULTI_DEFAULT_BUILD_TYPE}'.")
endif()
else()
message(STATUS "CMAKE_BUILD_TYPE was set to: '${CMAKE_BUILD_TYPE}'")
endif()
# Appends a 'debug postfix' to library targets (not executables)
# e.g. lib/libQt6DBus_debug.5.12.0.dylib
if(WIN32)
if(MINGW)
# On MinGW we don't have "d" suffix for debug libraries like on Linux,
# unless we're building debug and release libraries in one go.
if(QT_GENERATOR_IS_MULTI_CONFIG)
set(CMAKE_DEBUG_POSTFIX "d")
endif()
else()
set(CMAKE_DEBUG_POSTFIX "d")
endif()
elseif(APPLE)
set(CMAKE_DEBUG_POSTFIX "_debug")
set(CMAKE_FRAMEWORK_MULTI_CONFIG_POSTFIX_DEBUG "_debug")
endif()
## Position independent code:
set(CMAKE_POSITION_INDEPENDENT_CODE ON)
# Do not relink dependent libraries when no header has changed:
set(CMAKE_LINK_DEPENDS_NO_SHARED ON)
# Detect non-prefix builds: either when the qtbase install prefix is set to the binary dir
# or when a developer build is explicitly enabled and no install prefix is specified.
# This detection only happens when building qtbase, and later is propagated via the generated
# QtBuildInternalsExtra.cmake file.
if (PROJECT_NAME STREQUAL "QtBase" AND NOT QT_BUILD_STANDALONE_TESTS)
if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
if(FEATURE_developer_build)
# Handle non-prefix builds by setting the CMake install prefix to point to qtbase's
# build dir. While building another repo (like qtsvg) the CMAKE_PREFIX_PATH should be
# set on the command line to point to the qtbase build dir.
set(__qt_default_prefix "${QtBase_BINARY_DIR}")
else()
if(CMAKE_HOST_WIN32)
set(__qt_default_prefix "C:/Qt/")
else()
set(__qt_default_prefix "/usr/local/")
endif()
string(APPEND __qt_default_prefix
"Qt-${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}")
endif()
set(CMAKE_INSTALL_PREFIX ${__qt_default_prefix} CACHE PATH
"Install path prefix, prepended onto install directories." FORCE)
unset(__qt_default_prefix)
endif()
if(CMAKE_CROSSCOMPILING)
set(__qt_prefix "${CMAKE_STAGING_PREFIX}")
else()
set(__qt_prefix "")
endif()
if(__qt_prefix STREQUAL "")
set(__qt_prefix "${CMAKE_INSTALL_PREFIX}")
endif()
if(__qt_prefix STREQUAL QtBase_BINARY_DIR)
set(__qt_will_install_value OFF)
else()
set(__qt_will_install_value ON)
endif()
set(QT_WILL_INSTALL ${__qt_will_install_value} CACHE BOOL
"Boolean indicating if doing a Qt prefix build (vs non-prefix build)." FORCE)
unset(__qt_prefix)
unset(__qt_will_install_value)
endif()
# Specify the QT_SOURCE_TREE only when building qtbase. Needed by some tests when the tests are
# built as part of the project, and not standalone. For standalone tests, the value is set in
# QtBuildInternalsExtra.cmake.
if(PROJECT_NAME STREQUAL "QtBase")
set(QT_SOURCE_TREE "${QtBase_SOURCE_DIR}" CACHE PATH
"A path to the source tree of the previously configured QtBase project." FORCE)
endif()
if(FEATURE_developer_build)
if(DEFINED QT_CMAKE_EXPORT_COMPILE_COMMANDS)
set(CMAKE_EXPORT_COMPILE_COMMANDS ${QT_CMAKE_EXPORT_COMPILE_COMMANDS})
else()
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
endif()
set(_qt_build_tests_default ON)
set(__build_benchmarks ON)
# Tests are not built by default with qmake for iOS and friends, and thus the overall build
# tends to fail. Disable them by default when targeting uikit.
if(UIKIT OR ANDROID)
set(_qt_build_tests_default OFF)
endif()
# Disable benchmarks for single configuration generators which do not build
# with release configuration.
if (CMAKE_BUILD_TYPE AND CMAKE_BUILD_TYPE STREQUAL Debug)
set(__build_benchmarks OFF)
endif()
else()
set(_qt_build_tests_default OFF)
set(__build_benchmarks OFF)
endif()
# Build Benchmarks
option(QT_BUILD_BENCHMARKS "Build Qt Benchmarks" ${__build_benchmarks})
if(QT_BUILD_BENCHMARKS)
set(_qt_build_tests_default ON)
endif()
## Set up testing
option(QT_BUILD_TESTS "Build the testing tree." ${_qt_build_tests_default})
unset(_qt_build_tests_default)
option(QT_BUILD_TESTS_BY_DEFAULT "Should tests be built as part of the default 'all' target." ON)
if(QT_BUILD_STANDALONE_TESTS)
# BuildInternals might have set it to OFF on initial configuration. So force it to ON when
# building standalone tests.
set(QT_BUILD_TESTS ON CACHE BOOL "Build the testing tree." FORCE)
# Also force the tests to be built as part of the default build target.
set(QT_BUILD_TESTS_BY_DEFAULT ON CACHE BOOL
"Should tests be built as part of the default 'all' target." FORCE)
endif()
set(BUILD_TESTING ${QT_BUILD_TESTS} CACHE INTERNAL "")
# When cross-building, we don't build tools by default. Sometimes this also covers Qt apps as well.
# Like in qttools/assistant/assistant.pro, load(qt_app), which is guarded by a qtNomakeTools() call.
set(_qt_build_tools_by_default_default ON)
if(CMAKE_CROSSCOMPILING AND NOT QT_BUILD_TOOLS_WHEN_CROSSCOMPILING)
set(_qt_build_tools_by_default_default OFF)
endif()
option(QT_BUILD_TOOLS_BY_DEFAULT "Should tools be built as part of the default 'all' target."
"${_qt_build_tools_by_default_default}")
unset(_qt_build_tools_by_default_default)
include(CTest)
enable_testing()
option(QT_BUILD_EXAMPLES "Build Qt examples" OFF)
option(QT_BUILD_EXAMPLES_BY_DEFAULT "Should examples be built as part of the default 'all' target." ON)
# FIXME: Support prefix builds as well QTBUG-96232
if(QT_WILL_INSTALL)
set(_qt_build_examples_as_external OFF)
else()
set(_qt_build_examples_as_external ON)
endif()
option(QT_BUILD_EXAMPLES_AS_EXTERNAL "Should examples be built as ExternalProjects."
${_qt_build_examples_as_external})
unset(_qt_build_examples_as_external)
option(QT_BUILD_MANUAL_TESTS "Build Qt manual tests" OFF)
option(QT_BUILD_MINIMAL_STATIC_TESTS "Build minimal subset of tests for static Qt builds" OFF)
## Find host tools (if non native):
set(QT_HOST_PATH "" CACHE PATH "Installed Qt host directory path, used for cross compiling.")
if (CMAKE_CROSSCOMPILING)
if(NOT IS_DIRECTORY "${QT_HOST_PATH}")
message(FATAL_ERROR "You need to set QT_HOST_PATH to cross compile Qt.")
endif()
endif()
if(NOT "${QT_HOST_PATH}" STREQUAL "")
find_package(${INSTALL_CMAKE_NAMESPACE}HostInfo
CONFIG
REQUIRED
PATHS "${QT_HOST_PATH}"
"${QT_HOST_PATH_CMAKE_DIR}"
NO_CMAKE_FIND_ROOT_PATH
NO_DEFAULT_PATH)
endif()
## Android platform settings
if(ANDROID)
include(QtPlatformAndroid)
endif()
## qt_add_module and co.:
include(QtBuild)
## Qt Feature support:
include(QtBuildInformation)
include(QtFeature)
## Compiler optimization flags:
include(QtCompilerOptimization)
## Compiler flags:
include(QtCompilerFlags)
qt_set_language_standards()
option(QT_USE_CCACHE "Enable the use of ccache")
if(QT_USE_CCACHE)
find_program(CCACHE_PROGRAM ccache)
if(CCACHE_PROGRAM)
set(CMAKE_C_COMPILER_LAUNCHER "${CCACHE_PROGRAM}")
set(CMAKE_CXX_COMPILER_LAUNCHER "${CCACHE_PROGRAM}")
set(CMAKE_OBJC_COMPILER_LAUNCHER "${CCACHE_PROGRAM}")
set(CMAKE_OBJCXX_COMPILER_LAUNCHER "${CCACHE_PROGRAM}")
else()
message(FATAL_ERROR "Ccache use was requested, but the program was not found.")
endif()
endif()
# We need to clean up QT_FEATURE_*, but only once per configuration cycle
get_property(qt_feature_clean GLOBAL PROPERTY _qt_feature_clean)
if(NOT qt_feature_clean)
message(STATUS "Check for feature set changes")
set_property(GLOBAL PROPERTY _qt_feature_clean TRUE)
foreach(feature ${QT_KNOWN_FEATURES})
if(DEFINED "FEATURE_${feature}" AND
NOT "${QT_FEATURE_${feature}}" STREQUAL "${FEATURE_${feature}}")
message(" '${feature}' is changed from ${QT_FEATURE_${feature}} \
to ${FEATURE_${feature}}")
set(dirty_build TRUE)
endif()
unset("QT_FEATURE_${feature}" CACHE)
endforeach()
set(QT_KNOWN_FEATURES "" CACHE INTERNAL "" FORCE)
if(dirty_build)
set_property(GLOBAL PROPERTY _qt_dirty_build TRUE)
message(WARNING "Re-configuring in existing build folder. \
Some features will be re-evaluated automatically.")
endif()
endif()