Snapcraft packaging for quasselcore
[quassel.git] / CMakeLists.txt
index 47a672e..e031527 100644 (file)
@@ -6,14 +6,16 @@
 # General setup
 #####################################################################
 
-cmake_minimum_required(VERSION 2.8.9)
 project(QuasselIRC)
 
 # Versions
 set(QUASSEL_MAJOR  0)
-set(QUASSEL_MINOR 11)
+set(QUASSEL_MINOR 13)
 set(QUASSEL_PATCH  0)
-set(QUASSEL_VERSION_STRING "0.11-pre")
+set(QUASSEL_VERSION_STRING "0.13-pre")
+
+# We want to know CMake's version for debug reasons
+message(STATUS "Using CMake ${CMAKE_VERSION}")
 
 # Tell CMake about or own modules
 set(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake)
@@ -56,21 +58,46 @@ add_feature_info(WANT_CORE WANT_CORE "Build the core (server) binary")
 add_feature_info(WANT_QTCLIENT WANT_QTCLIENT "Build the client-only binary (requires a core to connect to)")
 add_feature_info(WANT_MONO WANT_MONO "Build the monolithic (all-in-one) binary")
 
-# Whether to enable KDE integration (pulls in kdelibs and friends as a dependency); requires Qt4 for now
-cmake_dependent_option(WITH_KDE "KDE4 integration" OFF "USE_QT4" OFF)
-add_feature_info(WITH_KDE WITH_KDE "Enable KDE4 integration")
+# Whether to enable KDE integration (work in progress for Qt5 / KDE Frameworks)
+# Note that when building with Qt5, WITH_KDE enables integration with higher-tier KDE frameworks that
+# require runtime support. We still optionally make use of certain Tier 1 frameworks even if WITH_KDE
+# is disabled.
+if (USE_QT4)
+    option(WITH_KDE "KDE4 integration" OFF)
+    add_feature_info(WITH_KDE WITH_KDE "Enable KDE4 integration")
+else()
+    option(WITH_KDE "Integration with the KDE Frameworks runtime environment")
+    add_feature_info(WITH_KDE WITH_KDE "Integrate with the KDE Frameworks runtime environment")
+endif()
 
-cmake_dependent_option(WITH_OXYGEN "Install Oxygen icon set (usually shipped with KDE)" ON "NOT WITH_KDE" OFF)
+cmake_dependent_option(WITH_BREEZE "Install Breeze icon theme (usually shipped with KDE)" ON "NOT WITH_KDE" OFF)
+cmake_dependent_option(WITH_BREEZE_DARK "Install Dark Breeze icon theme (usually shipped with KDE)" OFF "NOT WITH_KDE" OFF)
+cmake_dependent_option(WITH_OXYGEN "Install Oxygen icon theme (usually shipped with KDE)" OFF "NOT WITH_KDE" OFF)
 if (NOT WITH_KDE)
-    add_feature_info(WITH_OXYGEN WITH_OXYGEN "Install Oxygen icon set")
+    add_feature_info(WITH_BREEZE WITH_BREEZE "Install Breeze icon theme")
+    add_feature_info(WITH_BREEZE_DARK WITH_BREEZE_DARK "Install Dark Breeze icon theme")
+    add_feature_info(WITH_OXYGEN WITH_OXYGEN "Install Oxygen icon theme")
+endif()
+
+if (WITH_OXYGEN)
+    add_definitions(-DWITH_OXYGEN)
+endif()
+if (WITH_BREEZE)
+    add_definitions(-DWITH_BREEZE)
+endif()
+if (WITH_BREEZE_DARK)
+    add_definitions(-DWITH_BREEZE_DARK)
 endif()
 
 # For this, the feature info is added after we know if QtWebkit is installed
-option(WITH_WEBKIT "WebKit support (for link previews)" ON)
+option(WITH_WEBKIT "WebKit support (for link previews) (legacy)" OFF)
+
+# For this, the feature info is added after we know if QtWebEngine is installed
+option(WITH_WEBENGINE "WebEngine support (for link previews)" ON)
 
 if (APPLE)
     # Notification Center is only available in > 10.8, which is Darwin v12
-    if (CMAKE_SYSTEM_VERSION VERSION_GREATER "11.9.9")
+    if (NOT CMAKE_SYSTEM_VERSION VERSION_LESS 12)
         option(WITH_NOTIFICATION_CENTER "OS X Notification Center support" ON)
         add_feature_info(WITH_NOTIFICATION_CENTER WITH_NOTIFICATION_CENTER "Use the OS X Notification Center")
     endif()
@@ -90,9 +117,6 @@ 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)
 
-# Handle with care
-set(QT_PATH "" CACHE PATH "Path to a Qt4 installation to use instead of the system Qt (e.g. for static builds)")
-
 # Static builds are not supported and require some manual setup! Don't enable unless you know what you're doing (we don't know either)
 cmake_dependent_option(STATIC      "Enable static building (not supported)" OFF "NOT WITH_KDE" OFF)
 
@@ -106,6 +130,27 @@ if (LINK_EXTRA)
 endif()
 
 
+# Setup CMake
+#####################################################################
+
+if (USE_QT5 AND WITH_KDE)
+    cmake_minimum_required(VERSION 2.8.12)
+else()
+    cmake_minimum_required(VERSION 2.8.9)
+endif()
+
+# Setting COMPILE_DEFINITIONS_<CONFIG> is deprecated since CMake 3.0 in favor of generator expressions.
+# These have existed since CMake 2.8.10; until we depend on that, we have to explicitly enable the old policy.
+if (POLICY CMP0043)
+    cmake_policy(SET CMP0043 OLD)
+endif()
+
+# Honor visibility settings for all target types
+if (POLICY CMP0063)
+    cmake_policy(SET CMP0063 NEW)
+endif()
+
+
 # Simplify later checks
 #####################################################################
 
@@ -120,37 +165,28 @@ endif()
 # Set up Qt
 #####################################################################
 
-if (USE_QT5)
-    message(STATUS "Building for Qt5...")
-    set(QT_MIN_VERSION "5.2.0")
-    add_definitions(-DHAVE_QT5)
-else()
-    message(STATUS "Building for Qt4...")
-    if (BUILD_GUI)
-        set(QT_MIN_VERSION "4.6.0")
-    else()
-        set(QT_MIN_VERSION "4.4.0")
-    endif()
-
-    # Select a Qt installation here, if you don't want to use system Qt
-    if(QT_PATH)
-        # FindQt4 will look for the qmake binary in $PATH, so we just prepend QT_PATH
-        set(ENV{PATH} ${QT_PATH}/bin:$ENV{PATH})
-    endif()
-endif()
-
 # Find package dependencies
 #
 # Note that you can forcefully disable optional packages
 # using -DCMAKE_DISABLE_FIND_PACKAGE_<PkgName>=TRUE
 #####################################################################
 
-if(USE_QT5)
+if (USE_QT5)
+    message(STATUS "Building for Qt5...")
+    set(QT_MIN_VERSION "5.2.0")
+    add_definitions(-DHAVE_QT5)
+
     find_package(Qt5Core ${QT_MIN_VERSION} QUIET)
     set_package_properties(Qt5Core PROPERTIES TYPE REQUIRED
         URL "http://qt.digia.com"
         DESCRIPTION "contains core functionality for Qt"
     )
+    # find_package without REQUIRED won't check for the version properly; also, older Qt5 versions
+    # used Qt5Core_VERSION_STRING... let's just make sure here that we bail out here if our Qt5 is not new enough.
+    if (NOT Qt5Core_VERSION OR Qt5Core_VERSION VERSION_LESS ${QT_MIN_VERSION})
+        message(FATAL_ERROR "Could NOT find Qt5 >= version ${QT_MIN_VERSION}!")
+    endif()
+
     find_package(Qt5Network QUIET)
     set_package_properties(Qt5Network PROPERTIES TYPE REQUIRED
         DESCRIPTION "the network module for Qt5"
@@ -166,39 +202,138 @@ if(USE_QT5)
             DESCRIPTION "the widgets module for Qt5"
         )
 
-        find_package(Qt5DBus QUIET)
-        set_package_properties(Qt5DBus PROPERTIES TYPE RECOMMENDED
+        if (NOT WIN32)
+            find_package(Qt5DBus QUIET)
+            set_package_properties(Qt5DBus PROPERTIES TYPE RECOMMENDED
+                URL "http://qt.digia.com"
+                DESCRIPTION "D-Bus support for Qt5"
+                PURPOSE     "Needed for supporting D-Bus-based notifications and tray icon, used by most modern desktop environments"
+            )
+            if (Qt5DBus_FOUND)
+                find_package(dbusmenu-qt5 QUIET CONFIG)
+                set_package_properties(dbusmenu-qt5 PROPERTIES TYPE RECOMMENDED
+                    URL "https://launchpad.net/libdbusmenu-qt"
+                    DESCRIPTION "a library implementing the DBusMenu specification"
+                    PURPOSE     "Required for having a context menu for the D-Bus-based tray icon"
+                )
+            endif()
+        endif()
+
+        find_package(Qt5Multimedia QUIET)
+        set_package_properties(Qt5Multimedia PROPERTIES TYPE RECOMMENDED
             URL "http://qt.digia.com"
-            DESCRIPTION "D-Bus support for Qt5"
-            PURPOSE     "Needed for supporting D-Bus-based notifications and tray icon, used by most modern desktop environments"
+            DESCRIPTION "Multimedia support for Qt5"
+            PURPOSE     "Required for audio notifications"
         )
-        if (Qt5DBus_FOUND)
-            find_package(dbusmenu-qt5 QUIET CONFIG)
-            set_package_properties(dbusmenu-qt5 PROPERTIES TYPE RECOMMENDED
-                URL "https://launchpad.net/libdbusmenu-qt"
-                DESCRIPTION "a library implementing the DBusMenu specification"
-                PURPOSE     "Required for having a context menu for the D-Bus-based tray icon"
+
+        if (NOT Qt5Multimedia_FOUND)
+            find_package(Phonon4Qt5 QUIET)
+            set_package_properties(Phonon4Qt5 PROPERTIES TYPE RECOMMENDED
+                URL "https://projects.kde.org/projects/kdesupport/phonon"
+                DESCRIPTION "a multimedia abstraction library"
+                PURPOSE     "Required for audio notifications"
             )
         endif()
 
-        find_package(Phonon4Qt5 QUIET)
-        set_package_properties(Phonon4Qt5 PROPERTIES TYPE RECOMMENDED
-            URL "https://projects.kde.org/projects/kdesupport/phonon"
-            DESCRIPTION "a multimedia abstraction library"
-            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)
+            set_package_properties(LibsnoreSettingsQt5 PROPERTIES TYPE REQUIRED
+                URL "https://projects.kde.org/projects/playground/libs/snorenotify"
+                DESCRIPTION "a cross-platform notification framework"
+                PURPOSE     "Enable support for the snorenotify framework"
+            )
+        endif()
+
 
         if (WITH_WEBKIT)
-            find_package(Qt5Webkit QUIET)
-            set_package_properties(Qt5Webkit PROPERTIES TYPE RECOMMENDED
+            find_package(Qt5WebKit QUIET)
+            set_package_properties(Qt5WebKit PROPERTIES TYPE RECOMMENDED
                 URL "http://qt.digia.com"
-                DESCRIPTION "a Webkit implementation for Qt"
+                DESCRIPTION "a WebKit implementation for Qt"
                 PURPOSE     "Needed for displaying previews for URLs in chat"
             )
+            if (Qt5WebKit_FOUND)
+                find_package(Qt5WebKitWidgets QUIET)
+                set_package_properties(Qt5WebKitWidgets PROPERTIES TYPE RECOMMENDED
+                    URL "http://qt.digia.com"
+                    DESCRIPTION "widgets for Qt's WebKit implementation"
+                    PURPOSE     "Needed for displaying previews for URLs in chat"
+                )
+            endif()
+        endif()
+
+        if (WITH_WEBKIT AND Qt5WebKitWidgets_FOUND)
+            set(HAVE_WEBKIT true)
+        endif()
+        add_feature_info("WITH_WEBKIT, QtWebKit and QtWebKitWidgets modules" HAVE_WEBKIT "Support showing previews for URLs in chat (legacy)")
+
+        if (WITH_WEBENGINE)
+            find_package(Qt5WebEngine QUIET)
+            set_package_properties(Qt5WebEngine PROPERTIES TYPE RECOMMENDED
+                URL "http://qt.digia.com"
+                DESCRIPTION "a WebEngine implementation for Qt"
+                PURPOSE     "Needed for displaying previews for URLs in chat"
+            )
+            if (Qt5WebEngine_FOUND)
+                find_package(Qt5WebEngineWidgets QUIET)
+                set_package_properties(Qt5WebEngineWidgets PROPERTIES TYPE RECOMMENDED
+                    URL "http://qt.digia.com"
+                    DESCRIPTION "widgets for Qt's WebEngine implementation"
+                    PURPOSE     "Needed for displaying previews for URLs in chat"
+                )
+            endif()
+        endif()
+
+        if (WITH_WEBENGINE AND Qt5WebEngineWidgets_FOUND)
+            set(HAVE_WEBENGINE true)
+        endif()
+        add_feature_info("WITH_WEBENGINE, QtWebEngine and QtWebEngineWidgets modules" HAVE_WEBENGINE "Support showing previews for URLs in chat")
+
+        # KDE Frameworks
+        ################
+
+        if (WITH_KDE)
+            set(ecm_find_type "REQUIRED")
+        else()
+            # Even with KDE integration disabled, we optionally use tier1 frameworks if we find them
+            set(ecm_find_type "RECOMMENDED")
         endif()
-        add_feature_info("WITH_WEBKIT and QtWebkit module" Qt5Webkit_FOUND "Support showing previews for URLs in chat")
 
-    endif(BUILD_GUI)
+        # extra-cmake-modules
+        find_package(ECM NO_MODULE QUIET)
+        set_package_properties(ECM PROPERTIES TYPE ${ecm_find_type}
+            URL "https://projects.kde.org/projects/kdesupport/extra-cmake-modules"
+            DESCRIPTION "extra modules for CMake, maintained by the KDE project"
+            PURPOSE     "Required to find KDE Frameworks components"
+        )
+
+        if (ECM_FOUND)
+            list(APPEND CMAKE_MODULE_PATH ${ECM_MODULE_PATH})
+            if (WITH_KDE)
+                find_package(KF5 COMPONENTS ConfigWidgets CoreAddons Notifications NotifyConfig TextWidgets WidgetsAddons XmlGui QUIET)
+                set_package_properties(KF5 PROPERTIES TYPE REQUIRED
+                    URL "http://www.kde.org"
+                    DESCRIPTION "KDE Frameworks"
+                    PURPOSE     "Required for integration into the Plasma desktop"
+                )
+            else()
+                find_package(KF5Sonnet QUIET)
+                set_package_properties(KF5Sonnet PROPERTIES TYPE RECOMMENDED
+                    URL "http://api.kde.org/frameworks-api/frameworks5-apidocs/sonnet/html"
+                    DESCRIPTION "framework for providing spell-checking capabilities"
+                    PURPOSE "Enables spell-checking support in input widgets"
+                )
+            endif()
+        endif()
+
+    endif()
+
     if (BUILD_CORE)
         find_package(Qt5Script QUIET)
         set_package_properties(Qt5Script PROPERTIES TYPE REQUIRED
@@ -209,35 +344,44 @@ if(USE_QT5)
             DESCRIPTION "the database support module for Qt5"
         )
 
-        # While QCA2 seems to support Qt5, it is not actually co-installable or distinguishable from the Qt4 version...
-        # In order to avoid linking against the Qt4 version (which is probably the one installed), disable this for now
-        #find_package(QCA2 QUIET)
-        #set_package_properties(QCA2 PROPERTIES TYPE RECOMMENDED
-        #    URL "https://projects.kde.org/projects/kdesupport/qca"
-        #    DESCRIPTION "Qt Cryptographic Architecture"
-        #    PURPOSE "Required for encryption support"
-        #)
+        find_package(QCA2-QT5)
+        set_package_properties(QCA2-QT5 PROPERTIES TYPE RECOMMENDED
+            URL "https://projects.kde.org/projects/kdesupport/qca"
+            DESCRIPTION "Qt Cryptographic Architecture"
+            PURPOSE "Required for encryption support"
+        )
 
-    endif(BUILD_CORE)
+    endif()
 
     find_package(Qt5LinguistTools QUIET)
     set_package_properties(Qt5LinguistTools PROPERTIES TYPE RECOMMENDED
                            DESCRIPTION "contains tools for handling translation files"
                            PURPOSE "Required for having translations"
     )
-    # Qt5 does not define a target for lconvert, so we need to find it ourselves
+
+    # Some Qt5 versions do not define a target for lconvert, so we need to find it ourselves
     if (Qt5LinguistTools_FOUND)
         if (NOT TARGET Qt5::lconvert AND TARGET Qt5::lrelease)
             get_target_property(_lrelease_location Qt5::lrelease LOCATION)
             get_filename_component(_lrelease_path ${_lrelease_location} PATH)
             find_program(QT_LCONVERT_EXECUTABLE NAMES lconvert-qt5 lconvert PATHS ${_lrelease_path} NO_DEFAULT_PATH NO_CMAKE_FIND_ROOT_PATH)
+        elseif(TARGET Qt5::lconvert AND NOT Qt5_LCONVERT_EXECUTABLE)
+            # Newer Qt5 versions define the target, but not the Qt5_LCONVERT_EXECUTABLE variable for some reason
+            get_target_property(QT_LCONVERT_EXECUTABLE Qt5::lconvert LOCATION)
         endif()
+
         # Compatibility with the Qt4 variables
-        set (QT_LRELEASE_EXECUTABLE ${Qt5_LRELEASE_EXECUTABLE})
-        set (QT_LUPDATE_EXECUTABLE ${Qt5_LUPDATE_EXECUTABLE})
+        set(QT_LRELEASE_EXECUTABLE ${Qt5_LRELEASE_EXECUTABLE})
+        set(QT_LUPDATE_EXECUTABLE ${Qt5_LUPDATE_EXECUTABLE})
+        if (Qt5_LCONVERT_EXECUTABLE)
+            set(QT_LCONVERT_EXECUTABLE ${Qt5_LCONVERT_EXECUTABLE})
+        endif()
     endif()
 
-else(USE_QT5)
+else()
+    message(STATUS "Building for Qt4...")
+    set(QT_MIN_VERSION "4.8.0")
+
     find_package(Qt4 ${QT_MIN_VERSION} QUIET REQUIRED)
 
     if (BUILD_GUI)
@@ -254,7 +398,7 @@ else(USE_QT5)
         if (WITH_WEBKIT AND QT_QTWEBKIT_FOUND)
             set(HAVE_WEBKIT true)
         endif()
-        add_feature_info("WITH_WEBKIT and QtWebkit module" HAVE_WEBKIT "Support showing previews for URLs in chat")
+        add_feature_info("WITH_WEBKIT and QtWebKit module" HAVE_WEBKIT "Support showing previews for URLs in chat")
 
         if (WITH_KDE)
             # KDE has overzealous CFLAGS making miniz not compile, so save our old flags
@@ -267,21 +411,14 @@ else(USE_QT5)
             )
             set(CMAKE_C_FLAGS ${_cflags})
 
-        else(WITH_KDE)
+        else()
             find_package(Phonon QUIET)
             set_package_properties(Phonon PROPERTIES TYPE RECOMMENDED
                 URL "https://projects.kde.org/projects/kdesupport/phonon"
                 DESCRIPTION "a multimedia abstraction library"
                 PURPOSE     "Required for audio notifications"
             )
-
-            find_package(Libsnore QUIET)
-            set_package_properties(Libsnore PROPERTIES TYPE OPTIONAL
-                URL "https://github.com/TheOneRing/Snorenotify"
-                DESCRIPTION "a cross-platform notification framework"
-                PURPOSE     "Enable support for the snorenotify framework"
-            )
-        endif(WITH_KDE)
+        endif()
 
         find_package(IndicateQt QUIET)
         set_package_properties(IndicateQt PROPERTIES TYPE OPTIONAL
@@ -290,7 +427,8 @@ else(USE_QT5)
             PURPOSE     "Provides integration into the Ayatana notification system used by e.g. Ubuntu"
         )
 
-    endif(BUILD_GUI)
+    endif()
+
     if (BUILD_CORE)
 
         find_package(QCA2 QUIET)
@@ -332,42 +470,88 @@ if (NOT WIN32)
     )
 endif()
 
-
-# Various checks
-#####################################################################
-
-if (NOT ZLIB_FOUND)
-    message(STATUS "zlib NOT found, using bundled miniz for compression")
-    if (${CMAKE_SIZEOF_VOID_P} EQUAL 4)
-        message(STATUS "WARNING: This may be slow on 32 bit systems!")
-    endif()
-endif()
-
-if (KDE4_FOUND)
-    # We always use external icons for KDE4 support, since we use its iconloader rather than our own
-    set(EMBED_DATA OFF)
-
-    # Better have the compile flags global, even for the core, to avoid problems with linking the mono client
-    add_definitions(-DHAVE_KDE ${KDE4_DEFINITIONS})
-endif()
-
 # Check for SSL support in Qt
 # As there's no easy way to get Qt's configuration in particular for Qt5, let's just compile
 # a small test program checking the defines. This works for both Qt4 and Qt5.
 cmake_push_check_state(RESET)
-if (Qt5_POSITION_INDEPENDENT_CODE)
-    set(CMAKE_POSITION_INDEPENDENT_CODE ON)
-endif()
 set(CMAKE_REQUIRED_INCLUDES ${QT_INCLUDES} ${Qt5Core_INCLUDE_DIRS})
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${Qt5Core_EXECUTABLE_COMPILE_FLAGS}")
+
+if (USE_QT5 AND Qt5_POSITION_INDEPENDENT_CODE)
+    set(CMAKE_REQUIRED_FLAGS "-fPIC -DQT_NO_VERSION_TAGGING")
+endif()
+
 check_cxx_source_compiles("
     #include \"qglobal.h\"
-    #if defined QT_NO_OPENSSL || defined QT_NO_SSL
+    #if defined QT_NO_SSL
     #  error \"No SSL support\"
     #endif
     int main() {}"
     HAVE_SSL)
 cmake_pop_check_state()
 
+# Additional compile settings
+#####################################################################
+
+# This sets -fPIC and friends if required by the installed Qt5 library
+if (USE_QT5 AND Qt5_POSITION_INDEPENDENT_CODE)
+    set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+endif()
+
+# Needed to compile with mingw without kde
+if (MINGW AND NOT KDE4_FOUND)
+    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__)
+endif()
+
+# Sanitize compiler flags - old versions of KDE set -ansi, which breaks -std=c++11
+if (CMAKE_COMPILER_IS_GNUCXX)
+    string(REPLACE "-ansi" "" CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS})
+endif()
+
+
+# Setup KDE / KDE Frameworks
+#####################################################################
+
+# We want to do this up here, so we have the necessary variables and defines set before
+# compiling anything
+
+if (KDE4_FOUND)
+    # We always use external icons for KDE4 support, since we use its iconloader rather than Qt's
+    set(EMBED_DATA OFF)
+
+    # Better have the compile flags global, even for the core, to avoid problems with linking the mono client
+    add_definitions(-DHAVE_KDE -DHAVE_KDE4 ${KDE4_DEFINITIONS})
+    set(WITH_KDE4 TRUE)
+endif()
+
+if (USE_QT5 AND WITH_KDE)
+    # If KDE Frameworks are present, they're most probably providing Qt5 integration including icon loading
+    set(EMBED_DATA OFF)
+
+    include(KDEInstallDirs)
+    include(KDECompilerSettings)
+    include(KDECMakeSettings)
+
+    add_definitions(-DHAVE_KDE -DHAVE_KF5)
+    set(WITH_KF5 TRUE)
+endif()
+
+# This needs to come after setting up KDE integration, so we can use KDE-specific paths
+include(QuasselInstallDirs)
+
+# Various config-dependent checks and settings
+#####################################################################
+
+if (NOT ZLIB_FOUND)
+    message(STATUS "zlib NOT found, using bundled miniz for compression")
+    if (${CMAKE_SIZEOF_VOID_P} EQUAL 4)
+        message(STATUS "WARNING: This may be slow on 32 bit systems!")
+    endif()
+endif()
+
 if (HAVE_SSL)
     add_definitions(-DHAVE_SSL)
 endif()
@@ -381,92 +565,99 @@ endif()
 
 add_feature_info("Qt Linguist Tools" QT_LCONVERT_EXECUTABLE "Translation support for Quassel")
 
-# Various settings
-##################
+if (EMBED_DATA)
+    message(STATUS "Embedding data files into the binary")
+else()
+    message(STATUS "Installing data files separately")
+endif()
 
-# needed to compile with mingw without kde
-if (MINGW AND NOT KDE4_FOUND)
-    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__)
+if (INDICATEQT_FOUND)
+    add_definitions(-DXDG_APPS_INSTALL_DIR=${CMAKE_INSTALL_APPDIR})
+endif()
+
+if (NOT WIN32)
+    check_function_exists(umask HAVE_UMASK)
+    if(HAVE_UMASK)
+        add_definitions(-DHAVE_UMASK)
+    endif()
+endif()
+
+
+# Windows-specific stuff
+#####################################################################
+
+if (WIN32)
+    link_libraries(imm32 winmm dbghelp Secur32)  # missing by default :/
+    if (MSVC)
+        set(CMAKE_CXX_FLAGS "${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 "${CMAKE_EXE_LINKER_FLAGS_DEBUG}")
+        link_libraries(Version dwmapi shlwapi)
+        if (USE_QT5)
+            set(QT_QTMAIN_LIBRARY Qt5::WinMain)
+        endif()
+    endif()
+    if(HAVE_SSL AND STATIC)
+        find_package(OpenSSL REQUIRED)
+        link_libraries(${OPENSSL_LIBRARIES} ${OPENSSL_EAY_LIBRARIES})
+    endif()
 endif()
 
-# Now set up install locations; those are set by KDE if integration is enabled
-if(NOT KDE4_FOUND)
-  if(WIN32)
-    set(BIN_INSTALL_DIR ${CMAKE_INSTALL_PREFIX} CACHE FILEPATH "Install path for binaries")
-    set(DATA_INSTALL_DIR $ENV{APPDATA}/quassel-irc.org/share/apps CACHE FILEPATH "Install path for data files")
-    set(ICON_INSTALL_DIR $ENV{APPDATA}/quassel-irc.org/share/icons CACHE FILEPATH "Global icon install path")
-    set(XDG_APPS_INSTALL_DIR $ENV{APPDATA}/quassel-irc.org/share/applications CACHE FILEPATH "Install path for .desktop files")
-  else(WIN32)
-    set(BIN_INSTALL_DIR ${CMAKE_INSTALL_PREFIX}/bin CACHE FILEPATH "Install path for binaries")
-    set(DATA_INSTALL_DIR ${CMAKE_INSTALL_PREFIX}/share/apps CACHE FILEPATH "Install path for data files")
-    set(ICON_INSTALL_DIR ${CMAKE_INSTALL_PREFIX}/share/icons CACHE FILEPATH "Global icon install path")
-    set(XDG_APPS_INSTALL_DIR ${CMAKE_INSTALL_PREFIX}/share/applications CACHE FILEPATH "Install path for .desktop files")
-  endif(WIN32)
-endif()
-
-if(EMBED_DATA)
-  message(STATUS "Embedding data files into the binary")
-else(EMBED_DATA)
-  message(STATUS "Installing data files separately")
-endif(EMBED_DATA)
-
-# RPATH needs to be set correctly
-# Do this down here, since otherwise KDE wants to handle it itself, and fails
-set(CMAKE_INSTALL_RPATH_USE_LINK_PATH 1)
-set(CMAKE_BUILD_WITH_INSTALL_RPATH 1)
-
-# Set global buildflags
-# This is very much non-portable, so don't use -DSTATIC until you know what
-# you do.
+
+# Static builds (very much non-portable, so don't use -DSTATIC
+# unless you know what you do!)
+#####################################################################
+
 if(STATIC AND CMAKE_COMPILER_IS_GNUCXX)
-  set(CMAKE_CXX_FLAGS "-static-libgcc ${CMAKE_CXX_FLAGS}")
-  link_directories(${CMAKE_BINARY_DIR}/staticlibs) # override dynamic libs
-  if(HAVE_SSL)
-    set(QUASSEL_SSL_LIBRARIES ssl crypto)  # these miss in static builds
-  endif(HAVE_SSL)
-endif(STATIC AND CMAKE_COMPILER_IS_GNUCXX)
-
-if(WIN32)
-  link_libraries(imm32 winmm dbghelp Secur32)  # missing by default :/
-  if(MSVC)
-    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 "${CMAKE_EXE_LINKER_FLAGS_DEBUG}")
-    link_libraries(Version dwmapi shlwapi)
-  endif(MSVC)
-  if(HAVE_SSL AND STATIC)
-     find_package(OpenSSL REQUIRED)
-     link_libraries(${OPENSSL_LIBRARIES} ${OPENSSL_EAY_LIBRARIES})
-  endif(HAVE_SSL AND STATIC)
-endif(WIN32)
-
-if(INDICATEQT_FOUND)
-  add_definitions(-DXDG_APPS_INSTALL_DIR=${XDG_APPS_INSTALL_DIR})
-endif()
-
-if(NOT WIN32)
-  check_function_exists(umask HAVE_UMASK)
-  if(HAVE_UMASK)
-    add_definitions(-DHAVE_UMASK)
-  endif(HAVE_UMASK)
-endif(NOT WIN32)
+    set(CMAKE_CXX_FLAGS "-static-libgcc ${CMAKE_CXX_FLAGS}")
+    link_directories(${CMAKE_BINARY_DIR}/staticlibs) # override dynamic libs
+    if (HAVE_SSL)
+        set(QUASSEL_SSL_LIBRARIES ssl crypto)  # these miss in static builds
+    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 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)
+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
+#####################################################################
+
 # These variables will be added to the main targets (CORE, QTCLIENT, MONO)
 set(COMMON_DEPS ${RC_WIN32})
 set(CORE_DEPS )
@@ -478,6 +669,7 @@ add_subdirectory(icons)
 add_subdirectory(pics)
 add_subdirectory(po)
 
+
 # Set up and display feature summary
 #####################################################################
 
@@ -488,7 +680,7 @@ feature_summary(WHAT ALL
 
 # Finally, compile the sources
 # We want this after displaying the feature summary to avoid ugly
-# CMake backtraces in case a required Qt5 modules misses
+# CMake backtraces in case a required Qt5 module is missing
 #####################################################################
 
 add_subdirectory(src)