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[quassel.git] / CMakeLists.txt
index 205dd86..4ec9377 100644 (file)
-# This is the cmake-based build system for Quassel IRC.
+# Main CMake file for building Quassel IRC
 #
-# You may pass various options to cmake:
-#
-# -DWANT_(CORE|QTCLIENT|MONO)=(ON|OFF)
-#                        : select binaries to build
-# -DWITH_OPENSSL=OFF     : Disable OpenSSL support
-# -DWITH_DBUS=OFF        : Disable D-Bus support (dbus notifications)
-# -DWITH_WEBKIT=OFF      : Disable WebKit support (link previews)
-# -DWITH_PHONON=OFF      : Disable Phonon support (audio notifications)
-# -DWITH_LIBINDICATE=OFF : Disable libindicate support (Ayatana notifications)
-# -DWITH_KDE=ON          : Enable KDE4 support
-# -DWITH_CRYPT=OFF       : Disable encryption support
-# -DWITH_OXYGEN=(ON|OFF) : Whether to install Oxygen icons (default: yes, unless KDE > 4.3.0 is present and enabled)
-# -DWITH_SYSLOG=OFF      : Disable syslog support
-#
-# -DEMBED_DATA=ON        : Embed all data files in icons the binary, rather than installing them separately
-#
-# -DQT=/path/to/qt       : Choose a Qt4 installation to use instead of the system Qt4
-# -DSTATIC=ON            : Enable static building of Quassel. Use with care.
-# -DDEPLOY=ON            : Mac OS X only. Use only for creating Quassel Packages!
-#
-# -DWITH_QT5=ON          : Enable (very) experimental support for Qt5 (see doc/README.Qt5!)
-#
-# NOTE: You should remove CMakeCache.txt if you plan to change any of these values!
+# See INSTALL for possible CMake options (or read the code, Luke)
+#####################################################################
 
+# General setup
+#####################################################################
 
 project(QuasselIRC)
 
+# Versions
+set(QUASSEL_MAJOR  0)
+set(QUASSEL_MINOR 12)
+set(QUASSEL_PATCH  0)
+set(QUASSEL_VERSION_STRING "0.12-pre")
+
+# Tell CMake about or own modules
+set(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake)
+
+# General conveniences
+set(CMAKE_AUTOMOC ON)
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
+
+# Include various CMake modules...
+include(CMakePushCheckState)
 include(CheckFunctionExists)
 include(CheckIncludeFile)
-include(CheckCXXCompilerFlag)
+include(CheckCXXSourceCompiles)
+include(CMakeDependentOption)
+include(FeatureSummary)
 
-# For building against Qt5, we check for an even newer cmake version below!
-cmake_minimum_required(VERSION 2.8.1 FATAL_ERROR)
+# ... and our own stuff
+include(QuasselCompileSettings)
+include(QuasselMacros)
 
-if(COMMAND cmake_policy)
-   cmake_policy(SET CMP0003 NEW)
-endif(COMMAND cmake_policy)
 
-# Use our own (well, and KDE's) version of some modules
-# In particular cmake's own FindQt4 and FindOpenSSL are quite buggy
-set(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/modules)
-include(QuasselMacros)
+# Options and variables that can be set on the command line
+#####################################################################
 
-# Various options and variables that can be set on the command line
+# First, choose a Qt version. We support USE_QT4 and USE_QT5; if neither is set, prefer Qt4 for now
+option(USE_QT5 "Enable support for Qt5 (disables KDE integration)" OFF)
+if (USE_QT4) # takes precedence
+    set(USE_QT5 OFF)
+else()
+    if (NOT USE_QT5)
+        set(USE_QT4 ON)
+    endif()
+endif()
+
+# Select the binaries to build
 option(WANT_CORE     "Build the core (server) binary"           ON)
-option(WANT_QTCLIENT "Build the Qt4 GUI client binary"          ON)
+option(WANT_QTCLIENT "Build the client-only binary"             ON)
 option(WANT_MONO     "Build the monolithic (all-in-one) binary" ON)
+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 (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()
 
-option(WITH_OPENSSL  "Enable OpenSSL support if present on the system" ON)
-option(WITH_DBUS     "Enable D-Bus support if present on the system"   ON)
-option(WITH_WEBKIT   "Enable WebKit support (for link previews)"       ON)
-option(WITH_PHONON   "Enable Phonon support (for audio notifications)" ON)
-option(WITH_LIBINDICATE "Enable Ayatana notification support"           ON)
-option(WITH_KDE      "Enable KDE4 integration"                         OFF)
-option(WITH_CRYPT    "Enable encryption support if present on system"  ON)
-option(WITH_SYSLOG   "Use syslog for storing log data"                 ON)
-
-# We use icon paths from KDE 4.3.x, which are partially invalid on older and possibly
-# even on newer KDE versions. Do not disable this unless you are sure that your Quassel will
-# run on a matching KDE version only.
-set(WITH_OXYGEN AUTO CACHE STRING "Install Oxygen icons (default is \"AUTO\" to install when KDE 4.3 or later is present")
-
-# Enable very experimental support for Qt5. Might break the compilation, or even more!
-option(WITH_QT5      "Enable (very) experimental support for Qt5"       OFF)
-
-option(STATIC        "Enable static building (might not be portable)" OFF)
-
-if(APPLE)
-  option(DEPLOY        "Mac OS X only! Adds required libs to bundle resources and create a dmg. Note: requires Qt to be built with 10.4u SDK" OFF)
-  # Notification Center is only available in > 10.8, which is Darwin v12
-  if(CMAKE_SYSTEM_VERSION VERSION_GREATER "11.9.9")
-    option(WITH_NOTIFICATION_CENTER "Enable OS X Notification Center support" ON)
-  endif(CMAKE_SYSTEM_VERSION VERSION_GREATER "11.9.9")
-endif(APPLE)
-
-# Default to embedding data in the static case
-if(STATIC OR WIN32)
-  set(EMBED_DEFAULT ON)
-else(STATIC OR WIN32)
-  set(EMBED_DEFAULT ON) # should be OFF as soon as everything works
-endif(STATIC OR WIN32)
-
-option(EMBED_DATA    "Embed all data files in the binary (rather than installing them separately)"   ${EMBED_DEFAULT})
-
-set(QT "" CACHE STRING "Path to a Qt installation to use instead of the system Qt (e.g. for static builds)")
-
-# Some settings imply others
-if(STATIC)
-  add_definitions(-DSTATIC)
-  set(WITH_KDE OFF CACHE BOOL "Static building with KDE is not supported")
-endif(STATIC)
-
-if(WIN32)
-  # We don't support separately installed resources yet on Win32
-  set(EMBED_DATA ON)
-endif(WIN32)
+cmake_dependent_option(WITH_OXYGEN "Install Oxygen icon set (usually shipped with KDE)" ON "NOT WITH_KDE" OFF)
+if (NOT WITH_KDE)
+    add_feature_info(WITH_OXYGEN WITH_OXYGEN "Install Oxygen icon set")
+endif()
+
+# For this, the feature info is added after we know if QtWebkit is installed
+option(WITH_WEBKIT "WebKit 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")
+        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()
+endif()
+
+# Always embed on Windows, OSX or for a static build; never embed when enabling KDE integration
+set(EMBED_DEFAULT OFF)
+if (STATIC OR 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 STATIC;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)
+
+# 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)
 
 # For static builds, arbitrary extra libs might need to be linked
 # Define a comma-separated list here
 # e.g. for pgsql, we need -DLINK_EXTRA=pq;crypt
 set(LINK_EXTRA "" CACHE STRING "Semicolon-separated list of libraries to be linked")
-if(LINK_EXTRA)
-  string(REPLACE "," ";" LINK_EXTRA ${LINK_EXTRA})
-  link_libraries(${LINK_EXTRA})
-endif(LINK_EXTRA)
-
-# Build Types
-
-if(CMAKE_CONFIGURATION_TYPES)
-   set(CMAKE_CONFIGURATION_TYPES Release RelWithDebInfo Debug Debugfull Profile MinSizeRel)
-   set(CMAKE_CONFIGURATION_TYPES "${CMAKE_CONFIGURATION_TYPES}" CACHE STRING
-     "Reset the configurations to what we need"
-     FORCE)
+if (LINK_EXTRA)
+    string(REPLACE "," ";" LINK_EXTRA ${LINK_EXTRA})
+    link_libraries(${LINK_EXTRA})
 endif()
 
-if(NOT CMAKE_BUILD_TYPE)
-  SET(CMAKE_BUILD_TYPE RelWithDebInfo CACHE STRING
-     "Choose the type of build, options are: None Debug Release RelWithDebInfo Debug Debugfull Profile MinSizeRel."
-     FORCE)
+
+# Setup CMake
+#####################################################################
+
+if (USE_QT5 AND WITH_KDE)
+    cmake_minimum_required(VERSION 2.8.12)
+else()
+    cmake_minimum_required(VERSION 2.8.9)
 endif()
 
-# Qt debug flags
-set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS_DEBUG QT_DEBUG)
-set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS_DEBUGFULL QT_DEBUG)
-set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS_RELEASE QT_NO_DEBUG NDEBUG)
-set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS_RELWITHDEBINFO QT_NO_DEBUG NDEBUG)
-set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS_PROFILE QT_NO_DEBUG NDEBUG)
-set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS_MINSIZEREL QT_NO_DEBUG NDEBUG)
+# 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 (CMAKE_MAJOR_VERSION GREATER 2)
+    cmake_policy(SET CMP0043 OLD)
+endif()
 
-if(NOT CMAKE_CONFIGURATION_TYPES AND NOT CMAKE_BUILD_TYPE)
-  set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS QT_NO_DEBUG NDEBUG)
+
+# Simplify later checks
+#####################################################################
+
+if (WANT_MONO OR WANT_QTCLIENT)
+    set(BUILD_GUI true)
+endif()
+if (WANT_MONO OR WANT_CORE)
+    set(BUILD_CORE true)
 endif()
 
-# Enable various flags on gcc
-if(CMAKE_COMPILER_IS_GNUCXX)
-  # Let's just hope that all gccs support these options and skip the tests...
-  # -fno-strict-aliasing is needed apparently for Qt < 4.6
-  set(CMAKE_CXX_FLAGS                  "${CMAKE_CXX_FLAGS} -ansi -Wall -Wextra -Wnon-virtual-dtor -fno-strict-aliasing")
-#  set(CMAKE_CXX_FLAGS_RELEASE          "-O2")   # use CMake default
-#  set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-g -O2")  # use CMake default
-  set(CMAKE_CXX_FLAGS_DEBUG             "-g -ggdb -O2 -fno-reorder-blocks -fno-schedule-insns -fno-inline")
-  set(CMAKE_CXX_FLAGS_DEBUGFULL         "-g3 -ggdb -fno-inline")
-  set(CMAKE_CXX_FLAGS_PROFILE           "-g3 -ggdb -fno-inline -ftest-coverage -fprofile-arcs")
-
-  set(CMAKE_CXX_FLAGS                  "${CMAKE_CXX_FLAGS} -ansi -W -Wall -Wextra -Wnon-virtual-dtor -fno-strict-aliasing -Wundef -Wcast-align -Wpointer-arith -Wformat-security -fno-check-new -fno-common")
-
-  check_cxx_compiler_flag(-Woverloaded-virtual CXX_W_OVERLOADED_VIRTUAL)
-  if(CXX_W_OVERLOADED_VIRTUAL)
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Woverloaded-virtual")
-  endif()
-endif(CMAKE_COMPILER_IS_GNUCXX)
-
-# Mac build stuff
-if(APPLE AND DEPLOY)
-  set(CMAKE_OSX_ARCHITECTURES "x86_64")
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mmacosx-version-min=10.6")
-  set(CMAKE_OSX_SYSROOT "/Developer/SDKs/MacOSX10.6.sdk/")
-  add_definitions(-DMAC_10_6_SDK)
-endif(APPLE AND DEPLOY)
-
-# Simplify checks
-if(WANT_MONO OR WANT_QTCLIENT)
-  set(BUILD_GUI true)
-endif(WANT_MONO OR WANT_QTCLIENT)
-if(WANT_MONO OR WANT_CORE)
-  set(BUILD_CORE true)
-endif(WANT_MONO OR WANT_CORE)
-
-
-# Version checks
-################
-
-if(WITH_QT5)
-  set(QT_MIN_VERSION "5.0.0")
-  add_definitions(-DHAVE_QT5)
-
-  # Qt5 needs a new enough cmake...
-  cmake_minimum_required(VERSION 2.8.6 FATAL_ERROR)
-
-  # ... for automoc
-  set(CMAKE_AUTOMOC ON)
-else(WITH_QT5)
-
-  # GUI stuff needs some new features
-  if(BUILD_GUI)
-    set(QT_MIN_VERSION "4.6.0")
-  else(BUILD_GUI)
-    set(QT_MIN_VERSION "4.4.0")
-  endif(BUILD_GUI)
-endif(WITH_QT5)
-
-
-# Dependencies
-##############
-
-if(WITH_QT5)
-  find_package(Qt5Core ${QT_MIN_VERSION} REQUIRED)
-  # We need QtWidgets
-  set(CLIENT_QT_MODULES ${CLIENT_QT_MODULES} Widgets)
-
-  # Setup the i18n-related variables
-  find_package(Qt5LinguistTools)
-
-else(WITH_QT5)
-  # Select a Qt installation here, if you don't want to use system Qt
-  if(QT)
-    # FindQt4 will look for the qmake binary in $PATH, so we just prepend the Qt dir
-    set(ENV{PATH} ${QT}/bin:$ENV{PATH})
-  endif(QT)
-
-  # Now that we have the correct $PATH, lets find Qt!
-  find_package(Qt4 ${QT_MIN_VERSION} REQUIRED)
-endif(WITH_QT5)
-
-
-# Neither Qt4 nor Qt5 consider lconvert relevant, so they don't support finding it...
-# Rather than shipping hacked buildsys files, let's just infer the path from lrelease
-if(QT_LRELEASE_EXECUTABLE)
-  get_filename_component(_lrelease_path ${QT_LRELEASE_EXECUTABLE} PATH)
-  if(WITH_QT5)
-    find_program(QT_LCONVERT_EXECUTABLE NAMES lconvert-qt5 lconvert PATHS ${_lrelease_path} NO_DEFAULT_PATH NO_CMAKE_FIND_ROOT_PATH)
-  else(WITH_QT5)
-    find_program(QT_LCONVERT_EXECUTABLE NAMES lconvert-qt4 lconvert PATHS ${_lrelease_path} NO_DEFAULT_PATH NO_CMAKE_FIND_ROOT_PATH)
-  endif(WITH_QT5)
-endif(QT_LRELEASE_EXECUTABLE)
-
-
-# Execinfo is needed for generating backtraces
-find_package(ExecInfo)
-if(EXECINFO_FOUND)
-  add_definitions(-DHAVE_EXECINFO)
-  include_directories(${EXECINFO_INCLUDES})
-  link_libraries(${EXECINFO_LIBRARIES})
-endif(EXECINFO_FOUND)
-
-
-# PkgConfig isn't strictly required.
-# However, some optional deps might not be found if it's not present, so warn!
-find_package(PkgConfig)
-if(NOT PKG_CONFIG_FOUND)
-  message(STATUS "WARNING: PkgConfig not available! Some dependencies for optional features might not be found.")
-  message(STATUS "         Affected features might include encryption support, DBus menus and Ayatana notifications.")
-endif(NOT PKG_CONFIG_FOUND)
-
-
-# Setup OpenSSL
-# We don't link to or include OpenSSL ourselves, but use exclusively the Qt API.
-# Thus, we simply check if OpenSSL support is present in Qt's config and enable our
-# own SSL stuff in this case. Qt should care for adding what it needs itself.
-if(WITH_OPENSSL)
-  if(QT_QCONFIG MATCHES "openssl")
-    message(STATUS "Found OpenSSL support in Qt, enabling SSL")
-    add_definitions(-DHAVE_SSL)
-    set(HAVE_SSL true)
-  else(QT_QCONFIG MATCHES "openssl")
-    message(STATUS "No OpenSSL support found in Qt, disabling SSL")
-    add_definitions(-DQT_NO_OPENSSL)
-  endif(QT_QCONFIG MATCHES "openssl")
-else(WITH_OPENSSL)
-  message(STATUS "Not enabling OpenSSL support")
-endif(WITH_OPENSSL)
-
-
-# Check for GUI specific stuff
-if(BUILD_GUI)
-
-  # Setup D-Bus support
-  if(WITH_DBUS)
-    if(WITH_QT5)
-      find_package(Qt5DBus ${QT_MIN_VERSION})
-      find_package(Qt5DBusTools)
-    endif(WITH_QT5)
-
-    if(QT_QTDBUS_FOUND OR (Qt5DBus_FOUND AND Qt5DBusTools_FOUND))
-      message(STATUS "Found QtDBus, enabling D-Bus support")
-      add_definitions(-DHAVE_DBUS)
-      set(HAVE_DBUS true)
-      set(CLIENT_QT_MODULES ${CLIENT_QT_MODULES} DBus)
-
-      # check if we have dbusmenu as well
-      if(NOT WITH_QT5)
-        find_package(DBusMenuQt)
-        if(DBUSMENUQT_FOUND)
-          message(STATUS "Enabling support for exporting the tray menu via D-Bus")
-          add_definitions(-DHAVE_DBUSMENU)
-          include_directories(${DBUSMENUQT_INCLUDE_DIR})
-          set(CLIENT_LIBRARIES ${CLIENT_LIBRARIES} ${DBUSMENUQT_LIBRARIES})
-          set(CLIENT_COMPILE_FLAGS "${CLIENT_COMPILE_FLAGS} ${DBUSMENUQT_DEFINITIONS}")
-        else(DBUSMENUQT_FOUND)
-          message(STATUS "Disabling support for exporting the tray menu via D-Bus")
-        endif(DBUSMENUQT_FOUND)
-      endif(NOT WITH_QT5)
-
-    else(QT_QTDBUS_FOUND OR (Qt5DBus_FOUND AND Qt5DBusTools_FOUND))
-      message(STATUS "QtDBus not found, disabling D-Bus support")
-    endif(QT_QTDBUS_FOUND OR (Qt5DBus_FOUND AND Qt5DBusTools_FOUND))
-  else(WITH_DBUS)
-    message(STATUS "Not enabling D-Bus support")
-  endif(WITH_DBUS)
-
-  # Setup QtWebkit support
-  if(WITH_WEBKIT)
-    if(WITH_QT5)
-      find_package(Qt5Webkit ${QT_MIN_VERSION} QUIET)
-    endif(WITH_QT5)
-    if(QT_QTWEBKIT_FOUND OR Qt5Webkit_FOUND)
-      message(STATUS "Found QtWebKit, enabling WebKit support")
-      add_definitions(-DHAVE_WEBKIT)
-      set(CLIENT_QT_MODULES ${CLIENT_QT_MODULES} Webkit XmlPatterns)
-      set(HAVE_WEBKIT true)
-    else(QT_QTWEBKIT_FOUND OR Qt5Webkit_FOUND)
-      message(STATUS "QtWebkit not found, disabling Webkit support")
-    endif(QT_QTWEBKIT_FOUND OR Qt5Webkit_FOUND)
-  else(WITH_WEBKIT)
-    message(STATUS "Not enabling Webkit support")
-  endif(WITH_WEBKIT)
-
-  # Setup KDE4 support
-  if(WITH_KDE AND NOT WITH_QT5)
-    find_package(KDE4)
-    if(KDE4_FOUND)
-      message(STATUS "Enabling KDE4 integration")
-      include_directories(${KDE4_INCLUDES})
-      add_definitions(-DHAVE_KDE ${KDE4_DEFINITIONS})
-      set(HAVE_KDE 1)
-      set(CLIENT_LIBRARIES ${CLIENT_LIBRARIES} ${KDE4_KDECORE_LIBS} ${KDE4_KDEUI_LIBRARY} ${KDE4_SOLID_LIBS} ${KDE4_KNOTIFYCONFIG_LIBRARY})
-      # We always use external icons for KDE4 support, since we use its iconloader rather than our own
-      set(EMBED_DATA OFF)
-    else(KDE4_FOUND)
-      message(STATUS "KDE4 not found, disabling KDE integration")
-    endif(KDE4_FOUND)
-  else(WITH_KDE AND NOT WITH_QT5)
-    message(STATUS "Not enabling KDE4 integration")
-  endif(WITH_KDE AND NOT WITH_QT5)
-
-  # Setup Phonon support - we only need this if we don't have or want KDE4
-  if(NOT HAVE_KDE)
-    if(WITH_PHONON)
-      if(WITH_QT5)
-        find_package(Qt5phonon)
-        if(Qt5phonon_FOUND)
-          message(STATUS "Enabling Phonon support")
-          add_definitions(-DHAVE_PHONON)
-          set(HAVE_PHONON true)
-          set(CLIENT_QT_MODULES ${CLIENT_QT_MODULES} phonon)
-        else(Qt5phonon_FOUND)
-          message(STATUS "Phonon not found, disabling audio notifications")
-        endif(Qt5phonon_FOUND)
-      else(WITH_QT5)
-        find_package(Phonon)
-        if(PHONON_FOUND)
-          message(STATUS "Enabling Phonon support")
-          add_definitions(-DHAVE_PHONON)
-          include_directories(${PHONON_INCLUDES})
-          set(CLIENT_LIBRARIES ${CLIENT_LIBRARIES} ${PHONON_LIBS})
-          set(HAVE_PHONON true)
-        else(PHONON_FOUND)
-          message(STATUS "Phonon not found, disabling audio notifications")
-        endif(PHONON_FOUND)
-      endif(WITH_QT5)
-    else(WITH_PHONON)
-      message(STATUS "Not enabling Phonon support")
-    endif(WITH_PHONON)
-  endif(NOT HAVE_KDE)
-
-  # Setup libindicate-qt support
-  if(WITH_LIBINDICATE AND NOT WITH_QT5)
-    pkg_check_modules(INDICATEQT QUIET indicate-qt>=0.2.1)
-    if(INDICATEQT_FOUND)
-      message(STATUS "Enabling Ayatana notification support")
-      set(HAVE_INDICATEQT true)
-      add_definitions(-DHAVE_INDICATEQT)
-      link_directories(${INDICATEQT_LIBRARY_DIRS})
-      set(CLIENT_LIBRARIES ${CLIENT_LIBRARIES} ${INDICATEQT_LIBRARIES})
-    else(INDICATEQT_FOUND)
-      message(STATUS "Disabling Ayatana notification support")
-    endif(INDICATEQT_FOUND)
-  else(WITH_LIBINDICATE AND NOT WITH_QT5)
-    message(STATUS "Not enabling Ayatana notification support")
-    # We don't want to link against it even if another package has found it
-    set(INDICATEQT_LIBRARIES "")
-  endif(WITH_LIBINDICATE AND NOT WITH_QT5)
-
-  # Setup OS X notification center support
-  if(WITH_NOTIFICATION_CENTER AND APPLE)
-    set(HAVE_NOTIFICATION_CENTER true)
-    add_definitions(-DHAVE_NOTIFICATION_CENTER)
-    set(CLIENT_LIBRARIES ${CLIENT_LIBRARIES}
-      /System/Library/Frameworks/Foundation.framework
+
+# 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...")
+    set(QT_MIN_VERSION "4.8.0")
+
+    # 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)
+    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"
     )
-  endif()
-
-endif(BUILD_GUI)
-
-# Core-only deps
-if(BUILD_CORE)
-
-  # Setup encryption support
-  if(WITH_CRYPT AND NOT WITH_QT5)
-    find_package(QCA2)
-    if(QCA2_FOUND)
-      message(STATUS "Enabling encryption support")
-      add_definitions(-DHAVE_QCA2)
-      set(LINK_QCA2 QCA2)
-      set(HAVE_QCA2 true)
-      set(MOC_DEFINES ${MOC_DEFINES} -DHAVE_QCA2)
-    else(QCA2_FOUND)
-      message(STATUS "Disabling encryption support")
-    endif(QCA2_FOUND)
-  else(WITH_CRYPT AND NOT WITH_QT5)
-    message(STATUS "Not enabling encryption support")
-  endif(WITH_CRYPT AND NOT WITH_QT5)
-
-  # Setup syslog support
-  if(WITH_SYSLOG)
-    check_include_file(syslog.h HAVE_SYSLOG_H)
-    if(HAVE_SYSLOG_H)
-      message(STATUS "Enabling syslog support")
-      set(HAVE_SYSLOG true)
-      add_definitions(-DHAVE_SYSLOG)
-    else(HAVE_SYSLOG_H)
-      message(STATUS "Disabling syslog support")
-    endif(HAVE_SYSLOG_H)
-  else(WITH_SYSLOG)
-    message(STATUS "Not enabling syslog support")
-  endif(WITH_SYSLOG)
-
-endif(BUILD_CORE)
-
-
-# Various settings
-##################
-
-# needed to compile with mingw without kde
-if(MINGW AND NOT HAVE_KDE)
+
+    if (BUILD_GUI)
+        find_package(Qt5Gui QUIET)
+        set_package_properties(Qt5Gui PROPERTIES TYPE REQUIRED
+            DESCRIPTION "the GUI module for Qt5"
+        )
+        find_package(Qt5Widgets QUIET)
+        set_package_properties(Qt5Widgets PROPERTIES TYPE REQUIRED
+            DESCRIPTION "the widgets module for Qt5"
+        )
+
+        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()
+
+        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 QUIET)
+        set_package_properties(LibsnoreQt5 PROPERTIES TYPE OPTIONAL
+            URL "https://github.com/TheOneRing/Snorenotify"
+            DESCRIPTION "a cross-platform notification framework"
+            PURPOSE     "Enable support for the snorenotify framework"
+        )
+
+        if (WITH_WEBKIT)
+            find_package(Qt5WebKit QUIET)
+            set_package_properties(Qt5WebKit PROPERTIES TYPE RECOMMENDED
+                URL "http://qt.digia.com"
+                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()
+        add_feature_info("WITH_WEBKIT, QtWebKit and QtWebKitWidgets modules" Qt5WebKitWidgets_FOUND "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()
+
+        # 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})
+        endif()
+
+        if (WITH_KDE)
+            find_package(KF5 COMPONENTS ConfigWidgets CoreAddons Notifications NotifyConfig TextWidgets 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"
+            )
+
+        endif()
+
+    endif(BUILD_GUI)
+
+    if (BUILD_CORE)
+        find_package(Qt5Script QUIET)
+        set_package_properties(Qt5Script PROPERTIES TYPE REQUIRED
+            DESCRIPTION "provides scripting support for Qt5"
+        )
+        find_package(Qt5Sql QUIET)
+        set_package_properties(Qt5Sql PROPERTIES TYPE REQUIRED
+            DESCRIPTION "the database support module for Qt5"
+        )
+
+        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)
+
+    find_package(Qt5LinguistTools QUIET)
+    set_package_properties(Qt5LinguistTools PROPERTIES TYPE RECOMMENDED
+                           DESCRIPTION "contains tools for handling translation files"
+                           PURPOSE "Required for having translations"
+    )
+
+    # 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})
+        if (Qt5_LCONVERT_EXECUTABLE)
+            set(QT_LCONVERT_EXECUTABLE ${Qt5_LCONVERT_EXECUTABLE})
+        endif()
+    endif()
+
+else(USE_QT5)
+    find_package(Qt4 ${QT_MIN_VERSION} QUIET REQUIRED)
+
+    if (BUILD_GUI)
+        add_feature_info("QtDBus module" QT_QTDBUS_FOUND "Needed for supporting D-Bus-based notifications and tray icon, used by most modern desktop environments")
+        if (QT_QTDBUS_FOUND)
+            find_package(dbusmenu-qt QUIET CONFIG)
+            set_package_properties(dbusmenu-qt 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()
+
+        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")
+
+        if (WITH_KDE)
+            # KDE has overzealous CFLAGS making miniz not compile, so save our old flags
+            set(_cflags ${CMAKE_C_FLAGS})
+            find_package(KDE4 4.4 QUIET)
+            set_package_properties(KDE4 PROPERTIES TYPE REQUIRED
+                URL "http://www.kde.org"
+                DESCRIPTION "a world-class desktop environment"
+                PURPOSE "Enables various bits for improving integration with KDE"
+            )
+            set(CMAKE_C_FLAGS ${_cflags})
+
+        else(WITH_KDE)
+            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)
+
+        find_package(IndicateQt QUIET)
+        set_package_properties(IndicateQt PROPERTIES TYPE OPTIONAL
+            URL "https://launchpad.net/libindicate-qt/"
+            DESCRIPTION "a library to raise flags on DBus for other components of the desktop to pick up and visualize"
+            PURPOSE     "Provides integration into the Ayatana notification system used by e.g. Ubuntu"
+        )
+
+    endif(BUILD_GUI)
+
+    if (BUILD_CORE)
+
+        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"
+        )
+
+
+    endif()
+
+    # Qt4 does not consider lconvert relevant, so they don't support finding it...
+    # Rather than shipping hacked buildsys files, let's just infer the path from lrelease
+    if (QT_LRELEASE_EXECUTABLE)
+        get_filename_component(_lrelease_path ${QT_LRELEASE_EXECUTABLE} PATH)
+        find_program(QT_LCONVERT_EXECUTABLE NAMES lconvert-qt4 lconvert PATHS ${_lrelease_path} NO_DEFAULT_PATH NO_CMAKE_FIND_ROOT_PATH)
+    endif()
+endif()
+
+
+# Non-Qt-based packages
+
+# zlib for compression, however we can always fall back to miniz
+find_package(ZLIB QUIET)
+set_package_properties(ZLIB PROPERTIES TYPE RECOMMENDED
+    URL "http://www.zlib.net"
+    DESCRIPTION "a popular compression library"
+    PURPOSE     "Use the most common library for protocol compression, instead of the bundled miniz implementation"
+)
+
+
+if (NOT WIN32)
+    # Execinfo is needed for generating backtraces
+    find_package(ExecInfo QUIET)
+    set_package_properties(ExecInfo PROPERTIES TYPE OPTIONAL
+        DESCRIPTION "a library for inspecting backtraces"
+        PURPOSE "Used for generating backtraces in case of a crash"
+    )
+endif()
+
+
+# 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
+    # workaround for bug in mingw gcc 4.0
     add_definitions(-U__STRICT_ANSI__)
-endif(MINGW AND NOT HAVE_KDE)
-
-# Now set up install locations; those are set by KDE if integration is enabled
-if(NOT HAVE_KDE)
-  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(NOT HAVE_KDE)
-
-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.
+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()
+
+# 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)
+set(CMAKE_REQUIRED_INCLUDES ${QT_INCLUDES} ${Qt5Core_INCLUDE_DIRS})
+check_cxx_source_compiles("
+    #include \"qglobal.h\"
+    #if defined QT_NO_OPENSSL || defined QT_NO_SSL
+    #  error \"No SSL support\"
+    #endif
+    int main() {}"
+    HAVE_SSL)
+cmake_pop_check_state()
+
+if (HAVE_SSL)
+    add_definitions(-DHAVE_SSL)
+endif()
+add_feature_info("SSL support in Qt" HAVE_SSL "Use secure network connections")
+
+# Check for syslog support
+if (NOT WIN32)
+    check_include_file(syslog.h HAVE_SYSLOG)
+    add_feature_info("syslog.h" HAVE_SYSLOG "Provide support for logging to the syslog")
+endif()
+
+add_feature_info("Qt Linguist Tools" QT_LCONVERT_EXECUTABLE "Translation support for Quassel")
+
+if (EMBED_DATA)
+    message(STATUS "Embedding data files into the binary")
+else()
+    message(STATUS "Installing data files separately")
+endif()
+
+if (INDICATEQT_FOUND)
+    add_definitions(-DXDG_APPS_INSTALL_DIR=${CMAKE_INSTALL_APPDIR})
+endif()
+
+if (NOT WIN32)
+    check_function_exists(umask HAVE_UMASK)
+    if(HAVE_UMASK)
+        add_definitions(-DHAVE_UMASK)
+    endif(HAVE_UMASK)
+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()
+
+
+# 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} ${OPENSSL_EAY_LIBRARIES})
-  endif(HAVE_SSL AND STATIC)
-endif(WIN32)
-
-if(HAVE_INDICATEQT)
-  add_definitions(-DXDG_APPS_INSTALL_DIR=${XDG_APPS_INSTALL_DIR})
-endif(HAVE_INDICATEQT)
-
-if(NOT WIN32)
-  check_function_exists(umask HAVE_UMASK)
-  if(HAVE_UMASK)
-    add_definitions(-DHAVE_UMASK)
-  endif(HAVE_UMASK)
-endif(NOT WIN32)
-
-# We need to create a version.gen
-# For this, we create our genversion binary and make sure it is run every time.
-
-setup_qt_variables()
-include_directories(${QUASSEL_QT_INCLUDES})
-
-add_executable(genversion ${CMAKE_SOURCE_DIR}/src/common/genversion.cpp)
-target_link_libraries(genversion ${QUASSEL_QT_LIBRARIES})
-set_target_properties(genversion PROPERTIES COMPILE_FLAGS "${QUASSEL_QT_COMPILEFLAGS}")
-
-get_target_property(GENVERSION_EXECUTABLE genversion LOCATION)
-add_custom_target(genversion_run ALL ${GENVERSION_EXECUTABLE}
-                  ${CMAKE_SOURCE_DIR} ${CMAKE_BINARY_DIR}/src/version.gen)
-add_dependencies(genversion_run genversion)
+    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)
+
+# Sanitize things if we're not in a Git repo
+if (NOT GIT_HEAD OR NOT GIT_DESCRIBE)
+    set(GIT_HEAD "")
+    set(GIT_DESCRIBE "")
+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})
@@ -528,4 +584,19 @@ add_subdirectory(data)
 add_subdirectory(icons)
 add_subdirectory(pics)
 add_subdirectory(po)
+
+
+# Set up and display feature summary
+#####################################################################
+
+feature_summary(WHAT ALL
+                INCLUDE_QUIET_PACKAGES
+                FATAL_ON_MISSING_REQUIRED_PACKAGES
+)
+
+# Finally, compile the sources
+# We want this after displaying the feature summary to avoid ugly
+# CMake backtraces in case a required Qt5 module is missing
+#####################################################################
+
 add_subdirectory(src)