-# Check for SSL support in Qt (broken for Qt5 currently)
-# We don't link to the OpenSSL libraries ourselves.
-if (QT_QCONFIG MATCHES "openssl")
- set(HAVE_SSL true)
+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)