qtutilities/cmake/modules/QtLinkage.cmake

97 lines
5.2 KiB
CMake

cmake_minimum_required(VERSION 3.3.0 FATAL_ERROR)
# determines the Qt linkage
if(NOT DEFINED QT_LINKAGE_DETERMINED)
set(QT_LINKAGE_DETERMINED true)
include(3rdParty)
set(QT_LINKAGE "AUTO_LINKAGE" CACHE STRING "specifies whether to link statically or dynamically against Qt 5")
if(BUILD_STATIC_LIBS OR ("${QT_LINKAGE}" STREQUAL "AUTO_LINKAGE" AND ((STATIC_LINKAGE AND "${META_PROJECT_TYPE}" STREQUAL "application") OR (STATIC_LIBRARY_LINKAGE AND ("${META_PROJECT_TYPE}" STREQUAL "" OR "${META_PROJECT_TYPE}" STREQUAL "library")))) OR ("${QT_LINKAGE}" STREQUAL "STATIC"))
set(USE_STATIC_QT_BUILD ON)
message(STATUS "Checking for static Qt 5 libraries to use in project ${TARGET_PREFIX}${META_PROJECT_NAME}${TARGET_SUFFIX}")
endif()
if(("${QT_LINKAGE}" STREQUAL "AUTO_LINKAGE" AND (NOT (STATIC_LINKAGE AND "${META_PROJECT_TYPE}" STREQUAL "application") OR NOT (STATIC_LIBRARY_LINKAGE AND ("${META_PROJECT_TYPE}" STREQUAL "" OR "${META_PROJECT_TYPE}" STREQUAL "library")))) OR ("${QT_LINKAGE}" STREQUAL "SHARED"))
set(USE_SHARED_QT_BUILD ON)
message(STATUS "Checking for dynamic Qt 5 libraries to use in project ${TARGET_PREFIX}${META_PROJECT_NAME}${TARGET_SUFFIX}")
endif()
macro(find_qt5_module MODULE REQUIRED)
# determine whether the library is required or optional
# FIXME: improve passing required argument
if("${REQUIRED}" STREQUAL "OPTIONAL")
set(${MODULE}_REQUIRED "")
elseif("${REQUIRED}" STREQUAL "REQUIRED")
set(QT_5_${MODULE}_REQUIRED "REQUIRED")
else()
message(FATAL_ERROR "Invalid use of link_against_library; must specify either REQUIRED or OPTIONAL.")
endif()
# find static version
if(USE_STATIC_QT_BUILD)
# check for 'Static'-prefixed CMake module first
# - patched mingw-w64-qt5 packages providing those files are available in my PKGBUILDs repository
# - has the advantage that usage of dynamic and static Qt during the same build is possible
find_package(StaticQt5${MODULE})
if(StaticQt5${MODULE}_FOUND)
if(TARGET StaticQt5::${MODULE})
set(QT5_${MODULE}_STATIC_PREFIX "StaticQt5::")
else()
set(QT5_${MODULE}_STATIC_PREFIX "Qt5::static::")
endif()
set(QT5_${MODULE}_STATIC_LIB "${QT5_${MODULE}_STATIC_PREFIX}${MODULE}")
set(QT5_${MODULE}_ASSUME_STATIC OFF)
set(QT5_${MODULE}_FOUND ON)
# reverse lookup for pkg-config
set(PC_PKG_STATIC_Qt5_static_${MODULE} "StaticQt5${MODULE}")
else()
# consider the regular Qt package (without "Static" prefix) the static version if
# static Qt is required and Qt package with "Static" prefix doesn't exist
# (fallback if not using patched version of Qt mentioned above)
if(USE_STATIC_QT_BUILD AND NOT StaticQt5${MODULE}_FOUND AND Qt5${MODULE}_FOUND)
find_package(Qt5${MODULE} ${QT_5_${MODULE}_REQUIRED})
if(Qt5${MODULE}_FOUND)
set(QT5_${MODULE}_STATIC_PREFIX "Qt5::")
set(QT5_${MODULE}_STATIC_LIB "${QT5_${MODULE}_STATIC_PREFIX}${MODULE}")
set(QT5_${MODULE}_ASSUME_STATIC ON)
set(QT5_${MODULE}_FOUND ON)
# reverse lookup for pkg-config
set(PC_PKG_STATIC_Qt5_${MODULE} "Qt5${MODULE}")
message(WARNING "Building static libs and/or static Qt linkage has been enabled. Hence assuming provided Qt 5 ${MODULE} library is static.")
endif()
endif()
endif()
endif()
# find dynamic version
if(USE_SHARED_QT_BUILD)
if(QT5_${MODULE}_ASSUME_STATIC)
message(FATAL_ERROR "The provided Qt 5 ${MODULE} is assumed to be static. However, a shared version is required for building dynamic libs and/or dynamic Qt linkage.")
endif()
find_package(Qt5${MODULE} ${QT_5_${MODULE}_REQUIRED})
if(Qt5${MODULE}_FOUND)
set(QT5_${MODULE}_DYNAMIC_LIB Qt5::${MODULE})
set(QT5_${MODULE}_FOUND ON)
# reverse lookup for pkg-config
set(PC_PKG_SHARED_Qt5_${MODULE} "Qt5${MODULE}")
endif()
endif()
endmacro()
macro(use_qt5_module MODULE REQUIRED)
link_against_library("QT5_${MODULE}" "${QT_LINKAGE}" "${REQUIRED}")
if(${MODULE} IN_LIST META_PUBLIC_QT_MODULES)
list(APPEND META_PUBLIC_SHARED_LIB_DEPENDS ${QT5_${MODULE}_DYNAMIC_LIB})
list(APPEND META_PUBLIC_STATIC_LIB_DEPENDS ${QT5_${MODULE}_STATIC_LIB})
endif()
endmacro()
macro(use_static_qt5_plugin MODULE PLUGIN)
list(APPEND PRIVATE_LIBRARIES "${QT5_${MODULE}_STATIC_PREFIX}Q${PLUGIN}Plugin")
list(APPEND PRIVATE_STATIC_LIBRARIES "${QT5_${MODULE}_STATIC_PREFIX}Q${PLUGIN}Plugin")
message(STATUS "Linking ${TARGET_PREFIX}${META_PROJECT_NAME}${TARGET_SUFFIX} against static Qt 5 plugin ${QT5_${MODULE}_STATIC_PREFIX}Q${PLUGIN}Plugin")
endmacro()
endif(NOT DEFINED QT_LINKAGE_DETERMINED)