ENH: add FindKDE from Alex from kde.org

Modules/FindKDE.cmake

@@ -0,0 +1,151 @@
+# Locate KDE include paths and libraries
+
+# KDE_INCLUDE_DIR
+# KDE_LIB_DIR
+# KDE_KDE_CONFIG
+# KDE_DCOP_IDL
+# KDE_VERSION
+
+#the macro ADD_DCOP_SOURCES(src_headers dest_srcs)
+#
+#usage:
+#SET(MY_APP_SOURCES main.cpp kfoo.cpp)
+#SET(MY_DCOP_SOURCES kfooiface.h)
+#ADD_DCOP_SOURCES(MY_DCOP_SOURCES MY_APP_SOURCES)
+#and then it should work :-)
+
+#uses KDE_MIN_VERSION
+
+CMAKE_MINIMUM_REQUIRED(VERSION 2.0.0) 
+
+FIND_PATH(KDE_INCLUDE_DIR kurl.h
+  $ENV{KDEDIR}/include
+  /opt/kde/include
+  /opt/kde3/include
+  /usr/local/include
+  /usr/include/
+  /usr/include/kde
+  /usr/local/include/kde
+  )
+
+IF(KDE_INCLUDE_DIR)
+   MESSAGE(STATUS "Found KDE header files in ${KDE_INCLUDE_DIR}")
+ELSE(KDE_INCLUDE_DIR)
+   MESSAGE(FATAL_ERROR "Didn't find KDE headers")
+ENDIF(KDE_INCLUDE_DIR)
+
+FIND_PROGRAM(KDE_CONFIG NAME kde-config PATHS 
+  $ENV{KDEDIR}/bin
+  /opt/kde/bin
+  /opt/kde3/bin)
+
+IF(NOT KDE_CONFIG)
+   MESSAGE(FATAL_ERROR "Didn't find the kde-config utility")
+ENDIF(NOT KDE_CONFIG)
+
+FIND_PATH(KDE_LIB_DIR libkdecore.so
+  $ENV{KDEDIR}/lib
+  /opt/kde/lib
+  /opt/kde3/lib
+  )
+
+IF(KDE_LIB_DIR)
+   MESSAGE(STATUS "Found KDE libraries in ${KDE_LIB_DIR}")
+ELSE(KDE_LIB_DIR)
+   MESSAGE(FATAL_ERROR "Didn't find KDE core library")
+ENDIF(KDE_LIB_DIR)
+
+IF (KDE_MIN_VERSION)
+   #extract the version from kdeversion.h
+
+   FILE(READ ${KDE_INCLUDE_DIR}/kdeversion.h KDE_VERSION_H)
+
+   STRING(REGEX REPLACE ".*#define[\\t\\ ]+KDE_VERSION_STRING[\\t\\ ]+\"([0-9]+\\.[0-9]+\\.[0-9]+)\".*" "\\1" KDE_VERSION "${KDE_VERSION_H}")
+   STRING(REGEX REPLACE ".*#define[\\t\\ ]+KDE_VERSION_MAJOR[\\t\\ ]+([0-9]+).*" "\\1" kde_major_vers "${KDE_VERSION_H}")
+   STRING(REGEX REPLACE ".*#define[\\t\\ ]+KDE_VERSION_MINOR[\\t\\ ]+([0-9]+).*" "\\1" kde_minor_vers "${KDE_VERSION_H}")
+   STRING(REGEX REPLACE ".*#define[\\t\\ ]+KDE_VERSION_RELEASE[\\t\\ ]+([0-9]+).*" "\\1" kde_vers_release "${KDE_VERSION_H}")
+
+#now parse the parts of the user given version string into variables 
+   STRING(REGEX MATCH "^[0-9]+\\.[0-9]+\\.[0-9]+$" req_kde_major_vers "${KDE_MIN_VERSION}")
+   IF (NOT req_kde_major_vers)
+      MESSAGE( FATAL_ERROR "Invalid KDE version string given: \"${KDE_MIN_VERSION}\", expected e.g. \"3.1.5\"")
+   ENDIF (NOT req_kde_major_vers)
+      
+   STRING(REGEX REPLACE "([0-9]+)\\.[0-9]+\\.[0-9]+" "\\1" req_kde_major_vers "${KDE_MIN_VERSION}")
+   STRING(REGEX REPLACE "[0-9]+\\.([0-9])+\\.[0-9]+" "\\1" req_kde_minor_vers "${KDE_MIN_VERSION}")
+   STRING(REGEX REPLACE "[0-9]+\\.[0-9]+\\.([0-9]+)" "\\1" req_kde_patch_vers "${KDE_MIN_VERSION}")
+
+# req = "6.5.4", qt = "3.2.1"
+
+   IF (req_kde_major_vers GREATER kde_major_vers)                  # (6 > 3) ?
+      MESSAGE(  FATAL_ERROR "KDE major version not matched (required: ${KDE_MIN_VERSION}, found: ${KDE_VERSION})")            # yes
+   ELSE  (req_kde_major_vers GREATER kde_major_vers)               # no
+      IF (req_kde_major_vers LESS kde_major_vers)                  # (6 < 3) ?
+         SET( QT_VERSION_BIG_ENOUGH "YES" )                        # yes
+      ELSE (req_kde_major_vers LESS kde_major_vers)                # ( 6==3) ?
+         IF (req_kde_minor_vers GREATER kde_minor_vers)            # (5>2) ?
+            MESSAGE(  FATAL_ERROR "KDE minor version not matched (required: ${KDE_MIN_VERSION}, found: ${KDE_VERSION})")      # yes
+         ELSE (req_kde_minor_vers GREATER kde_minor_vers)          # no
+            IF (req_kde_minor_vers LESS kde_minor_vers)            # (5<2) ?
+               SET( QT_VERSION_BIG_ENOUGH "YES" )                  # yes
+            ELSE (req_kde_minor_vers LESS kde_minor_vers)          # (5==2)
+               IF (req_kde_patch_vers GREATER kde_vers_release)    # (4>1) ?
+                  MESSAGE( FATAL_ERROR "KDE release version not matched (required: ${KDE_MIN_VERSION}, found: ${KDE_VERSION})")  # yes
+               ELSE (req_kde_patch_vers GREATER kde_patch_vers)    # (4>1) ?
+                  SET( QT_VERSION_BIG_ENOUGH "YES" )               # yes
+               ENDIF (req_kde_patch_vers GREATER kde_vers_release) # (4>1) ?
+            ENDIF (req_kde_minor_vers LESS kde_minor_vers)
+         ENDIF (req_kde_minor_vers GREATER kde_minor_vers)
+      ENDIF (req_kde_major_vers LESS kde_major_vers)
+   ENDIF (req_kde_major_vers GREATER kde_major_vers)
+   MESSAGE(STATUS "KDE version ok (required: ${KDE_MIN_VERSION}, found: ${KDE_VERSION})")
+ENDIF (KDE_MIN_VERSION)
+
+#now search for the dcop utilities
+FIND_PROGRAM(KDE_DCOPIDL NAME dcopidl PATHS 
+  $ENV{KDEDIR}/bin
+  /opt/kde/bin
+  /opt/kde3/bin)
+
+IF(NOT KDE_DCOPIDL)
+   MESSAGE(FATAL_ERROR "Didn't find the dcopidl preprocessor")
+ENDIF(NOT KDE_DCOPIDL)
+
+FIND_PROGRAM(KDE_DCOPIDL2CPP NAME dcopidl2cpp PATHS 
+  $ENV{KDEDIR}/bin
+  /opt/kde/bin
+  /opt/kde3/bin)
+
+IF(NOT KDE_DCOPIDL2CPP)
+   MESSAGE(FATAL_ERROR "Didn't find the dcopidl2cpp preprocessor")
+ENDIF(NOT KDE_DCOPIDL2CPP)
+
+MACRO(DCOP_WRAP SKEL_SOURCES)
+   FOREACH(dcop_source ${ARGN})
+
+       GET_FILENAME_COMPONENT(dcop_source_basename ${dcop_source} NAME_WE)
+
+       SET(idl_file ${CMAKE_BINARY_DIR}/${dcop_source_basename}.kidl)
+       SET(skel_file ${CMAKE_BINARY_DIR}/${dcop_source_basename}_skel.cpp)
+
+       ADD_CUSTOM_COMMAND(
+         OUTPUT ${idl_file}
+         COMMAND ${KDE_DCOPIDL}
+         ARGS  ${CMAKE_SOURCE_DIR}/${dcop_source} > ${idl_file}
+         DEPENDS  ${CMAKE_SOURCE_DIR}/${dcop_source})
+
+      ADD_CUSTOM_COMMAND(
+        OUTPUT ${skel_file}
+        COMMAND ${KDE_DCOPIDL2CPP}  
+        ARGS --c++-suffix cpp --no-signals --no-stub ${idl_file}
+        DEPENDS ${idl_file})
+
+      SET( SKEL_SOURCES ${${SKEL_SOURCES}}
+        ${skel_file})
+   ENDFOREACH(dcop_source)
+ENDMACRO (DCOP_WRAP)
+
+MARK_AS_ADVANCED(
+  KDE_INCLUDE_DIR
+  KDE_LIB_DIR
+  )