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## 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 "${CMAKE_SOURCE_DIR}/.git")
set(_default_build_type "Debug")
endif()
if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
message(STATUS "Setting build type to '${_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 of build type for cmake-gui
endif()
# Appends a 'debug postfix' to library targets (not executables)
# e.g. lib/libQt5DBus_debug.5.12.0.dylib
if(WIN32)
set(CMAKE_DEBUG_POSTFIX "d")
elseif(APPLE)
set(CMAKE_DEBUG_POSTFIX "_debug")
endif()
## Force C++ standard, do not fall back, do not use compiler extensions
set(CMAKE_CXX_STANDARD 14)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
## 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)
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_WILL_INSTALL OFF)
set(QT_BUILD_TESTING ON)
# Handle non-prefix builds by setting the cmake install prefix to the project binary dir.
if(PROJECT_NAME STREQUAL "QtBase")
set(CMAKE_INSTALL_PREFIX ${CMAKE_BINARY_DIR} CACHE PATH
"Install path prefix, prepended onto install directories." FORCE)
else()
# No-op. While building another module, the CMAKE_INSTALL_PREFIX or CMAKE_PREFIX_PATH
# (either work) should be set on the command line to point to the qtbase build dir.
endif()
else()
set(QT_WILL_INSTALL ON)
set(QT_BUILD_TESTING OFF)
endif()
## Set up testing
option(BUILD_TESTING "Build the testing tree." ${QT_BUILD_TESTING})
include(CTest)
enable_testing()
## Define some constants to check for certain platforms, etc:
include(QtPlatformSupport)
## Android platform settings
if(ANDROID)
include(QtPlatformAndroid)
endif()
## add_qt_module and co.:
include(QtBuild)
## Qt Feature support:
include(QtFeature)
## Compiler optimization flags:
include(QtCompilerOptimization)
## Compiler flags:
include(QtCompilerFlags)
## Set up developer build:
qt_set_up_developer_build()
## 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()
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