Fixed qgssvnversion.h generation on Linux, Cygwin, cmd.exe and hopefu…

…lly also on Mac

git-svn-id: http://svn.osgeo.org/qgis/branches/Release-0_8_0@6673 c8812cc2-4d05-0410-92ff-de0c093fc19c

CMakeLists.txt

@@ -181,21 +181,29 @@ INCLUDE_DIRECTORIES(${CMAKE_BINARY_DIR})
 
 #############################################################
 # create qgssvnversion.h
+# see http://public.kitware.com/pipermail/cmake/2006-July/010299.html
 
-IF (WIN32)
-  SET (SVNVER_H ${CMAKE_BINARY_DIR}/qgssvnversion.h) 
-  IF (NOT EXISTS ${SVNVER_H}) 
-    WRITE_FILE(${SVNVER_H} "#define QGSSVNVERSION \"svn_rev_unavailable\"") 
-  ENDIF (NOT EXISTS ${SVNVER_H}) 
-ELSE (WIN32)
+# We only do this if we are in a .svn dir
 
-  ADD_CUSTOM_TARGET(svnversion ALL
-  QGSSVNDEF='\#define QGSSVNVERSION \"'`svnversion ${QGIS_SOURCE_DIR}`'\"' &&
-  if [ \"`grep QGSSVNVERSION qgssvnversion.h 2>/dev/null`\" != \"$$QGSSVNDEF\" ]; then 
-  echo $$QGSSVNDEF > qgssvnversion.h  \; fi 
-  WORKING_DIRECTORY ${CMAKE_BINARY_DIR})
+FIND_FILE(SVN_MARKER ${CMAKE_SOURCE_DIR}/.svn/entries)
 
-ENDIF (WIN32)
+IF (NOT SVN_MARKER)
+  SET (SVN_MARKER ${CMAKE_SOURCE_DIR}/CMakeLists.txt)  # Dummy file
+ENDIF (NOT SVN_MARKER)
+# Add a custom command to drive the svn script whenever the svn entries
+# file changes.
+CONFIGURE_FILE(${CMAKE_CURRENT_SOURCE_DIR}/svnscript.cmake.in_cmake
+               ${CMAKE_CURRENT_BINARY_DIR}/svnscript.cmake
+	       @ONLY)
+
+ADD_CUSTOM_COMMAND (
+  OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/qgssvnversion.h
+  DEPENDS ${SVN_MARKER}
+  COMMAND ${CMAKE_COMMAND} -P ${CMAKE_CURRENT_BINARY_DIR}/svnscript.cmake
+)
+
+# Add a custom target to drive the custom command.
+ADD_CUSTOM_TARGET(svnversion ALL DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/qgssvnversion.h)
 
 #############################################################
 # process subdirs

qgssvnversion.h.in_cmake

@@ -0,0 +1 @@
+#define QGSSVNVERSION "@MYVERSION@"

svnscript.cmake.in_cmake

@@ -0,0 +1,17 @@
+# Magnus Homann svn hack
+# Required?
+SET(CMAKE_BACKWARDS_COMPATIBILITY "2.4")
+
+# See if we have svn installed
+FIND_PROGRAM(SVNVERSION svnversion)
+
+# Read the version if installed, else set to "unknown"
+IF (SVNVERSION)
+        EXEC_PROGRAM(${SVNVERSION} ARGS @CMAKE_CURRENT_SOURCE_DIR@ OUTPUT_VARIABLE MYVERSION)
+ELSE (SVNVERSION)
+        SET(MYVERSION unknown)
+ENDIF (SVNVERSION)
+
+# Configure the qgssvnversion.h
+CONFIGURE_FILE(@CMAKE_CURRENT_SOURCE_DIR@/qgssvnversion.h.in_cmake
+               @CMAKE_CURRENT_BINARY_DIR@/qgssvnversion.h)