cmake: avoid de-duplication of user's CXXFLAGS
[quassel.git] / CMakeLists.txt
index 8af98b1..dfdaaeb 100644 (file)
@@ -11,14 +11,8 @@ cmake_minimum_required(VERSION 3.5)
 # Tell CMake about or own modules
 set(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake)
 
-# Versions
-set(QUASSEL_MAJOR  0)
-set(QUASSEL_MINOR 13)
-set(QUASSEL_PATCH 50)
-set(QUASSEL_VERSION_STRING "0.14-pre")
-
-# Output CMake and Quassel versions as well as build type for debug reasons
-message(STATUS "Building Quassel ${QUASSEL_VERSION_STRING}...")
+include(QuasselVersion)
+
 message(STATUS "Using CMake ${CMAKE_VERSION}")
 
 # Set up build type rather early
@@ -99,6 +93,10 @@ if (APPLE)
     find_library(CARBON_LIBRARY Carbon)
     mark_as_advanced(CARBON_LIBRARY)
     link_libraries(${CARBON_LIBRARY})
+
+    # Whether to enable the creation of bundles and DMG images
+    cmake_dependent_option(BUNDLE "Create bundles and DMG images" OFF "APPLE" OFF)
+    add_feature_info(BUNDLE BUNDLE "Create bundles and DMG images")
 endif()
 
 # Always embed on Windows or OSX; never embed when enabling KDE integration
@@ -107,14 +105,13 @@ if (WIN32 OR APPLE)
     set(EMBED_DEFAULT ON)
 endif()
 cmake_dependent_option(EMBED_DATA "Embed icons and translations into the binaries instead of installing them" ${EMBED_DEFAULT}
-                                   "NOT WIN32;NOT WITH_KDE" ${EMBED_DEFAULT})
+                                  "NOT WIN32;NOT WITH_KDE" ${EMBED_DEFAULT})
 if (NOT EMBED_DEFAULT)
     add_feature_info(EMBED_DATA EMBED_DATA "Embed icons and translations in the binaries instead of installing them")
 endif()
 
-# The following options are not for end-user consumption, so don't list them in the feature summary
-cmake_dependent_option(DEPLOY "Add required libs to bundle resources and create a dmg. Note: requires Qt to be built with 10.4u SDK" OFF "APPLE" OFF)
-
+# The following option is not for end-user consumption, so don't list it in the feature summary
+option(FATAL_WARNINGS "Make compile warnings fatal (most useful for CI builds)" OFF)
 
 # List of authenticators and the cmake flags to build them
 # (currently that's just LDAP, but more can be added here).
@@ -124,11 +121,25 @@ option(WITH_LDAP "Enable LDAP authentication support if present on system" ON)
 # Setup CMake
 #####################################################################
 
+# Visibility settings apply to all targets
+if (POLICY CMP0063)
+    cmake_policy(SET CMP0063 NEW)
+endif()
+
 # Let automoc/autouic process generated files
 if (POLICY CMP0071)
     cmake_policy(SET CMP0071 NEW)
 endif()
 
+set(BUILD_SHARED_LIBS TRUE CACHE BOOL "" FORCE)
+
+# Don't use X11 on OSX
+if (APPLE)
+    set(CMAKE_DISABLE_FIND_PACKAGE_X11 true)
+    set(CMAKE_DISABLE_FIND_PACKAGE_XCB true)
+    set(CMAKE_DISABLE_FIND_PACKAGE_Qt5X11Extras true)
+endif()
+
 # Simplify later checks
 #####################################################################
 
@@ -139,25 +150,30 @@ if (WANT_MONO OR WANT_CORE)
     set(BUILD_CORE true)
 endif()
 
-
 # Set up Qt
 #####################################################################
 
+set(QT_MIN_VERSION "5.5.0")
+
+# Enable Qt deprecation warnings for Qt < 5.13 (on by default in newer versions)
+add_definitions(-DQT_DEPRECATED_WARNINGS)
+
+# Disable all Qt APIs that were deprecated in 5.5 and before
+add_definitions(-DQT_DISABLE_DEPRECATED_BEFORE=0x050500)
+
 # Find package dependencies
 #
 # Note that you can forcefully disable optional packages
 # using -DCMAKE_DISABLE_FIND_PACKAGE_<PkgName>=TRUE
 #####################################################################
 
-set(QT_MIN_VERSION "5.5.0")
-
 # Required Qt components
 set(qt_components Core Network)
 if (BUILD_GUI)
     list(APPEND qt_components Gui Widgets)
 endif()
 if (BUILD_CORE)
-    list(APPEND qt_components Script Sql)
+    list(APPEND qt_components Sql)
 endif()
 
 find_package(Qt5 ${QT_MIN_VERSION} REQUIRED COMPONENTS ${qt_components})
@@ -167,6 +183,49 @@ set_package_properties(Qt5 PROPERTIES TYPE REQUIRED
 )
 message(STATUS "Found Qt ${Qt5Core_VERSION}")
 
+# Determine minimum deployment target for macOS supported by Qt
+if(APPLE)
+    if(NOT QMAKE_MACOSX_DEPLOYMENT_TARGET)
+        # qmake cannot be queried directly for QMAKE_MACOSX_DEPLOYMENT_TARGET (it is a mkspec, not a property).
+        # Instead, invoke qmake on an empty project file, which causes it to output the relevant keys and their values
+        # for subsequent parsing.
+        # A file named .qmake.stash is always created, so remove it (and empty.pro) afterwards.
+        set(qmakeEmptyProjectFile "${CMAKE_BINARY_DIR}/empty.pro")
+        set(qmakeStashFile "${CMAKE_BINARY_DIR}/.qmake.stash")
+        file(WRITE ${qmakeEmptyProjectFile} "")
+        get_target_property(QMAKE_EXECUTABLE Qt5::qmake IMPORTED_LOCATION)
+        execute_process(
+            COMMAND ${QMAKE_EXECUTABLE} -E ${qmakeEmptyProjectFile}
+            WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+            OUTPUT_VARIABLE qmakeOutput
+        )
+        file(REMOVE ${qmakeEmptyProjectFile} ${qmakeStashFile})
+        string(REGEX MATCH "QMAKE_MACOSX_DEPLOYMENT_TARGET[ ]*=[ ]*([0-9.]+)" foo ${qmakeOutput})
+        if(NOT CMAKE_MATCH_1)
+            message(FATAL_ERROR "Could not determine the deployment target for Qt")
+        endif()
+        set(QMAKE_MACOSX_DEPLOYMENT_TARGET ${CMAKE_MATCH_1} CACHE INTERNAL "")
+        mark_as_advanced(QMAKE_MACOSX_DEPLOYMENT_TARGET)
+    endif()
+    message(STATUS "Minimum macOS version supported by Qt: ${QMAKE_MACOSX_DEPLOYMENT_TARGET}")
+endif()
+
+# Check for SSL support in Qt
+cmake_push_check_state(RESET)
+set(CMAKE_REQUIRED_LIBRARIES Qt5::Core)
+check_cxx_source_compiles("
+    #include \"qglobal.h\"
+    #if defined QT_NO_SSL
+    #  error \"No SSL support\"
+    #endif
+    int main() {}"
+    HAVE_SSL)
+cmake_pop_check_state()
+
+if (NOT HAVE_SSL)
+    message(FATAL_ERROR "Quassel requires SSL support, but Qt is built with QT_NO_SSL")
+endif()
+
 # Optional Qt components
 
 find_package(Qt5LinguistTools QUIET)
@@ -200,19 +259,23 @@ if (BUILD_GUI)
         PURPOSE     "Required for audio notifications"
     )
 
-    find_package(LibsnoreQt5 0.7.0 QUIET)
-    set_package_properties(LibsnoreQt5 PROPERTIES TYPE OPTIONAL
-        URL "https://projects.kde.org/projects/playground/libs/snorenotify"
-        DESCRIPTION "a cross-platform notification framework"
-        PURPOSE     "Enable support for the snorenotify framework"
-    )
-    if (LibsnoreQt5_FOUND)
-        find_package(LibsnoreSettingsQt5 QUIET)
-        set_package_properties(LibsnoreSettingsQt5 PROPERTIES TYPE OPTIONAL
+    # snorenotify segfaults on startup on msys2
+    # we don't check for just MSYS to support the Ninja generator
+    if(NOT (WIN32 AND (NOT $ENV{MSYSTEM} STREQUAL "")))
+        find_package(LibsnoreQt5 0.7.0 QUIET)
+        set_package_properties(LibsnoreQt5 PROPERTIES TYPE OPTIONAL
             URL "https://projects.kde.org/projects/playground/libs/snorenotify"
             DESCRIPTION "a cross-platform notification framework"
             PURPOSE     "Enable support for the snorenotify framework"
         )
+        if (LibsnoreQt5_FOUND)
+            find_package(LibsnoreSettingsQt5 QUIET)
+            set_package_properties(LibsnoreSettingsQt5 PROPERTIES TYPE OPTIONAL
+                URL "https://projects.kde.org/projects/playground/libs/snorenotify"
+                DESCRIPTION "a cross-platform notification framework"
+                PURPOSE     "Enable support for the snorenotify framework"
+            )
+        endif()
     endif()
 
     if (WITH_WEBENGINE)
@@ -321,6 +384,21 @@ if (BUILD_CORE)
 endif()
 
 # Non-Qt-based packages
+#####################################################################
+
+find_package(Boost 1.54 REQUIRED)
+set_package_properties(Boost PROPERTIES TYPE REQUIRED
+    URL "https://www.boost.org/"
+    DESCRIPTION "Boost libraries for C++"
+)
+# Older versions don't define the imported target
+if (NOT TARGET Boost::boost)
+    add_library(Boost::boost INTERFACE IMPORTED GLOBAL)
+    if (Boost_INCLUDE_DIRS)
+        set_target_properties(Boost::boost PROPERTIES
+            INTERFACE_INCLUDE_DIRECTORIES "${Boost_INCLUDE_DIRS}")
+    endif()
+endif()
 
 find_package(ZLIB REQUIRED)
 set_package_properties(ZLIB PROPERTIES TYPE REQUIRED
@@ -338,51 +416,47 @@ if (NOT WIN32)
     )
 endif()
 
-# Check for SSL support in Qt
-cmake_push_check_state(RESET)
-set(CMAKE_REQUIRED_LIBRARIES Qt5::Core)
-check_cxx_source_compiles("
-    #include \"qglobal.h\"
-    #if defined QT_NO_SSL
-    #  error \"No SSL support\"
-    #endif
-    int main() {}"
-    HAVE_SSL)
-cmake_pop_check_state()
+# Shared library support
+#####################################################################
 
-if (HAVE_SSL)
-    add_definitions(-DHAVE_SSL)
-endif()
-add_feature_info("SSL support in Qt" HAVE_SSL "Use secure network connections")
+option(ENABLE_SHARED "Build modules as shared libraries" ON)
+add_feature_info(ENABLE_SHARED ENABLE_SHARED "Build modules as shared libraries")
 
-# Additional compile settings
+# Setup unit testing
 #####################################################################
 
-# Needed to compile with mingw without kde
-if (MINGW AND NOT WITH_KDE)
-    add_definitions(-D_WIN32_WINNT=0x0500)
-    message(STATUS "Added _WIN32_WINNT=0x0500 definition for MinGW")
-    # workaround for bug in mingw gcc 4.0
-    add_definitions(-U__STRICT_ANSI__)
+option(BUILD_TESTING "Enable unit tests" OFF)
+add_feature_info(BUILD_TESTING BUILD_TESTING "Build unit tests")
+
+if (BUILD_TESTING)
+    find_package(GTest QUIET)
+    set_package_properties(GTest PROPERTIES TYPE REQUIRED
+        DESCRIPTION "Google's unit testing framework"
+        PURPOSE "Required for building unit tests"
+    )
+
+    find_package(Qt5Test QUIET)
+    set_package_properties(Qt5Test PROPERTIES TYPE REQUIRED
+        DESCRIPTION "unit testing library for the Qt5 framework"
+        PURPOSE "Required for building unit tests"
+    )
+    enable_testing()
+
+    # GTest messes with CMAKE_CXX_FLAGS, so process them again
+    process_cmake_cxx_flags()
 endif()
 
 # Setup support for KDE Frameworks
 #####################################################################
 
-# We want to do this up here, so we have the necessary variables and defines set before
-# compiling anything
-
 if (WITH_KDE)
+    add_definitions(-DHAVE_KDE -DHAVE_KF5)
+    set(WITH_KF5 TRUE)
+
     # If KDE Frameworks are present, they're most probably providing Qt5 integration including icon loading
     set(EMBED_DATA OFF)
 
     include(KDEInstallDirs)
-    include(KDECompilerSettings)
-    include(KDECMakeSettings)
-
-    kde_enable_exceptions()
-    add_definitions(-DHAVE_KDE -DHAVE_KF5)
-    set(WITH_KF5 TRUE)
 endif()
 
 # This needs to come after setting up KDE integration, so we can use KDE-specific paths
@@ -438,52 +512,10 @@ endif()
 if (WIN32)
     link_libraries(imm32 winmm dbghelp Secur32)  # missing by default :/
     if (MSVC)
-        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /DNOMINMAX")
-        set(CMAKE_EXE_LINKER_FLAGS_RELWITHDEBUGINFO "/debug /INCREMENTAL:YES /NODEFAULTLIB:libcmt /DEFAULTLIB:msvcrt")
-        set(CMAKE_EXE_LINKER_FLAGS_DEBUG "/debug /INCREMENTAL:YES /NODEFAULTLIB:libcmt")
-        set(CMAKE_EXE_LINKER_FLAGS_DEBUGFULL "${CMAKE_EXE_LINKER_FLAGS_DEBUG}")
         link_libraries(Version dwmapi shlwapi)
     endif()
 endif()
 
-
-# Generate version information from Git
-#####################################################################
-
-include(GetGitRevisionDescription)
-get_git_head_revision(GIT_REFSPEC GIT_HEAD)
-git_describe(GIT_DESCRIBE --long)
-
-# If in a Git repo we can get the commit-date from a git command
-if (GIT_HEAD)
-    execute_process(
-        COMMAND git -c log.showsignature=false show -s --format=%ct
-        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
-        OUTPUT_VARIABLE GIT_COMMIT_DATE
-        OUTPUT_STRIP_TRAILING_WHITESPACE
-    )
-endif()
-
-# If not in a Git repo try to read GIT_HEAD and GIT_DESCRIBE from
-# enviroment
-if (NOT GIT_HEAD OR NOT GIT_DESCRIBE)
-  if (DEFINED ENV{GIT_HEAD})
-      set(GIT_HEAD $ENV{GIT_HEAD})
-  endif()
-  if (DEFINED ENV{GIT_DESCRIBE})
-     set(GIT_DESCRIBE $ENV{GIT_DESCRIBE})
-  endif()
-endif()
-
-# Sanitize things if we're not in a Git repo
-if (NOT GIT_HEAD OR NOT GIT_DESCRIBE)
-    set(GIT_HEAD "")
-    set(GIT_DESCRIBE "")
-    set(GIT_COMMIT_DATE 0)
-endif()
-
-configure_file(version.h.in ${CMAKE_BINARY_DIR}/version.h @ONLY)
-
 # Prepare the build
 #####################################################################
 
@@ -507,3 +539,8 @@ feature_summary(WHAT ALL
 #####################################################################
 
 add_subdirectory(src)
+
+# Build tests if so desired
+if (BUILD_TESTING)
+    add_subdirectory(tests)
+endif()