[kde-common/cmake] added our own FindQt module

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kde-common/cmake@1186901 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

modules/FindQt.cmake

@@ -0,0 +1,92 @@
+#################################################
+#
+#  (C) 2010 Serghei Amelian
+#  serghei (DOT) amelian (AT) gmail.com
+#
+#  Improvements and feedback are welcome
+#
+#  This file is released under GPL >= 2
+#
+#################################################
+
+macro( __tde_internal_find_qt_program __progname __output )
+  find_program( ${__output}
+    NAMES ${__progname}
+    HINTS ${QTDIR}/bin $ENV{QTDIR}/bin
+    PATHS ${BINDIR} )
+  if( NOT ${__output} )
+    tde_message_fatal( "${__progname} are NOT found.\n Please check if Qt are correctly installed." )
+  endif( NOT ${__output} )
+endmacro( __tde_internal_find_qt_program )
+
+
+if( NOT QT_FOUND )
+
+  # we search for moc only if is not already set (by user or previous run of cmake)
+  if( NOT QT_MOC_EXECUTABLE )
+    __tde_internal_find_qt_program( moc QT_MOC_EXECUTABLE )
+  endif( NOT QT_MOC_EXECUTABLE )
+
+  message( STATUS "checking for 'Qt'")
+
+  # we run moc, to check which qt version is using
+  execute_process(
+    COMMAND ${QT_MOC_EXECUTABLE} -v
+    ERROR_VARIABLE __output
+    RESULT_VARIABLE __result
+    ERROR_STRIP_TRAILING_WHITESPACE )
+
+  # parse moc response, to extract Qt version
+  if( __result EQUAL 1 )
+    string( REGEX MATCH "^.*Qt (.+)\\)$" __dummy  "${__output}" )
+    set( __version  "${CMAKE_MATCH_1}" )
+    if( NOT __version )
+      tde_message_fatal( "Invalid response from moc:\n ${__output}" )
+    endif( NOT __version )
+  else( __result EQUAL 1 )
+    tde_message_fatal( "Unable to run moc!\n Qt are correctly installed?\n LD_LIBRARY_PATH are correctly set?" )
+  endif( __result EQUAL 1 )
+
+  # search for uic
+  __tde_internal_find_qt_program( uic QT_UIC_EXECUTABLE )
+
+  # try to find path to qt.h
+  # we assume that this path is Qt's include path
+  find_path( QT_INCLUDE_DIR qt.h
+    ${QT_INCLUDE_DIR}
+    ${QTDIR}/include
+    $ENV{QTDIR}/include )
+
+  if( NOT QT_INCLUDE_DIR )
+
+    tde_message_fatal(
+ "Unable to find qt.h!
+ Qt are correctly installed?
+ Try to set QT_INCLUDE_DIR manually.
+ Example: cmake -DQT_INCLUDE_DIR=/usr/qt/3/include" )
+
+  endif( NOT QT_INCLUDE_DIR )
+
+  # try to find libqt-mt.so
+  # we assume that this is Qt's libraries path
+  find_path( QT_LIBRARY_DIR libqt-mt.so
+    ${QT_LIBRARY_DIR}
+    ${QTDIR}/lib
+    $ENV{QTDIR}/lib )
+
+  if( NOT QT_LIBRARY_DIR )
+
+    tde_message_fatal(
+ "Unable to find libqt-mt.so!
+ Qt are correctly installed?
+ Try to set QT_LIBRARY_DIR manually.
+ Example: cmake -DQT_LIBRARY_DIR=/usr/qt/3/lib" )
+
+  endif( NOT QT_LIBRARY_DIR )
+
+  message( STATUS "  found Qt, version ${__version}" )
+  set( QT_FOUND true CACHE INTERNAL QT_FOUND FORCE )
+  set( QT_LIBRARIES "qt-mt" CACHE INTERNAL QT_LIBRARIES FORCE )
+  set( QT_DEFINITIONS "-DQT_NO_ASCII_CAST -DQT_CLEAN_NAMESPACE -DQT_NO_STL -DQT_NO_COMPAT -DQT_NO_TRANSLATION" CACHE INTERNAL QT_DEFINITIONS FORCE )
+
+endif( NOT QT_FOUND )