qt5base-lts/cmake/QtSetup.cmake
Alexandru Croitor f4cd66ff0a CMake: Handle super build non-prefix install prefix correctly
The install prefix in such a case is the qtbase build dir,
and not the qt6 top-level build dir. This caused issues with
certain incorrect paths being generated, including a broken
qt-cmake-standalone-test script, as well as upon reconfiguration
determining that a non-prefix build should be installed.

The fix for a non-prefix build is to check explicitly for
the qtbase build dir. This works both for super and non-super
builds.

Task-number: QTBUG-83496
Change-Id: Ida2393176c4c81da767023ff48159afdedfb0a19
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
2020-04-17 15:59:30 +02:00

188 lines
7.0 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.")
set(_default_build_type "Release")
if(EXISTS "${CMAKE_SOURCE_DIR}/.git")
set(_default_build_type "Debug")
endif()
# Reset content of extra build internal vars for each inclusion of QtSetup.
unset(QT_EXTRA_BUILD_INTERNALS_VARS)
# Save the global property in a variable to make it available to feature conditions.
get_property(QT_GENERATOR_IS_MULTI_CONFIG GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
message(STATUS "Setting build type to '${_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()
endif()
# Appends a 'debug postfix' to library targets (not executables)
# e.g. lib/libQt6DBus_debug.5.12.0.dylib
if(WIN32)
set(CMAKE_DEBUG_POSTFIX "d")
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)
# Default to hidden visibility for symbols:
set(CMAKE_C_VISIBILITY_PRESET hidden)
set(CMAKE_CXX_VISIBILITY_PRESET hidden)
set(CMAKE_VISIBILITY_INLINES_HIDDEN 1)
# Detect non-prefix builds, either when the install prefix is set to the binary dir
# or when enabling developer builds and no 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 STREQUAL QtBase_BINARY_DIR) OR
(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT AND FEATURE_developer_build))
set(__qt_will_install_value OFF)
# 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_INSTALL_PREFIX or CMAKE_PREFIX_PATH
# (either work) should be set on the command line to point to the qtbase build dir.
set(CMAKE_INSTALL_PREFIX ${QtBase_BINARY_DIR} CACHE PATH
"Install path prefix, prepended onto install directories." FORCE)
else()
set(__qt_will_install_value ON)
endif()
set(QT_WILL_INSTALL ${__qt_will_install_value} CACHE BOOL
"Boolean indicating if doing a Qt prefix build (vs non-prefix build)." FORCE)
unset(__qt_will_install_value)
endif()
# Specify the QT_SOURCE_TREE only when building qtbase. Needed by some tests when the tests are
# built as part of the project, and not standalone. For standalone tests, the value is set in
# QtBuildInternalsExtra.cmake.
if(PROJECT_NAME STREQUAL "QtBase")
set(QT_SOURCE_TREE "${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_TESTING 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_TESTING OFF)
endif()
# Disable benchmarks for single configuration generators which do not build
# with release configuration.
if (CMAKE_BUILD_TYPE AND NOT CMAKE_BUILD_TYPE STREQUAL Release)
set(__build_benchmarks OFF)
endif()
else()
set(QT_BUILD_TESTING OFF)
set(__build_benchmarks OFF)
endif()
## Set up testing
option(BUILD_TESTING "Build the testing tree." ${QT_BUILD_TESTING})
if(QT_BUILD_STANDALONE_TESTS)
set(QT_BUILD_TESTING ON)
# BuildInternals might have set it to OFF on initial configuration. So force it to ON when
# building standalone tests.
set(BUILD_TESTING ON CACHE BOOL "Build the testing tree." FORCE)
# Also force the tests to be built as part of the default build target.
set(QT_NO_MAKE_TESTS OFF CACHE BOOL
"Should examples be built as part of the default 'all' target." FORCE)
endif()
option(QT_NO_MAKE_TESTS "Should tests be built as part of the default 'all' target." OFF)
# When cross-building, we don't build tools by default. Sometimes this also covers Qt apps as well.
# Like in qttools/assistant/assistant.pro, load(qt_app), which is guarded by a qtNomakeTools() call.
option(QT_NO_MAKE_TOOLS "Should tools be built as part of the default 'all' target."
"${CMAKE_CROSSCOMPILING}")
include(CTest)
enable_testing()
# Set up building of examples.
set(QT_BUILD_EXAMPLES ON)
# Examples 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_EXAMPLES OFF)
endif()
option(BUILD_EXAMPLES "Build Qt examples" ${QT_BUILD_EXAMPLES})
option(QT_NO_MAKE_EXAMPLES "Should examples be built as part of the default 'all' target." OFF)
# Build Benchmarks
option(QT_BUILD_BENCHMARKS "Build Qt Benchmarks" ${__build_benchmarks})
## 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)
## Set up non-prefix build:
qt_set_up_nonprefix_build()
qt_set_language_standards()
## Find host tools (if non native):
set(QT_HOST_PATH "" CACHE PATH "Installed Qt host directory path, used for cross compiling.")
if (CMAKE_CROSSCOMPILING AND NOT IS_DIRECTORY ${QT_HOST_PATH})
message(FATAL_ERROR "You need to set QT_HOST_PATH to cross compile Qt.")
endif()
## Enable support for sanitizers:
include(${CMAKE_CURRENT_LIST_DIR}/3rdparty/extra-cmake-modules/modules/ECMEnableSanitizers.cmake)
option(QT_USE_CCACHE "Enable the use of ccache")
if(QT_USE_CCACHE)
find_program(CCACHE_PROGRAM ccache)
set(CMAKE_C_COMPILER_LAUNCHER "${CCACHE_PROGRAM}")
set(CMAKE_CXX_COMPILER_LAUNCHER "${CCACHE_PROGRAM}")
set(CMAKE_OBJC_COMPILER_LAUNCHER "${CCACHE_PROGRAM}")
endif()