fix typo in cmake script. patch from Nikolai Saoukh

CMakeLists.txt

@@ -111,6 +111,6 @@ IF( EXIV2_ENABLE_BUILD_SAMPLES )
     ADD_SUBDIRECTORY( samples )
 ENDIF( EXIV2_ENABLE_BUILD_SAMPLES )
 
-IF( EXIV2_BUILD_PO )
+IF( EXIV2_ENABLE_BUILD_PO )
     ADD_SUBDIRECTORY( po )
-ENDIF( EXIV2_BUILD_PO )
+ENDIF( EXIV2_ENABLE_BUILD_PO )

config/ConfigureChecks.cmake

@@ -276,5 +276,5 @@ OptionOutput( "Conversion of Windows XP tags:      " EXIV2_ENABLE_PRINTUCS2
 OptionOutput( "Nikon lens database:                " EXIV2_ENABLE_LENSDATA           )
 OptionOutput( "Commercial build:                   " EXIV2_ENABLE_COMMERCIAL         )
 OptionOutput( "Build the unit tests:               " EXIV2_ENABLE_BUILD_SAMPLES      )
-OptionOutput( "Building translations files:        " EXIV2_BUILD_PO                  )
+OptionOutput( "Building translations files:        " EXIV2_ENABLE_BUILD_PO           )
 MESSAGE( STATUS "------------------------------------------------------------------" )

src/CMakeLists.txt

@@ -172,9 +172,9 @@ IF( MSVC )
 ENDIF( MSVC )
 
 IF( EXIV2_ENABLE_XMP )
-    IF( NOT EXIV2_EXIV2_ENABLE_LIBXMP )
+    IF( NOT EXIV2_ENABLE_LIBXMP )
         SET( LIBEXIV2_SRC ${XMPSRC} ${LIBEXIV2_SRC} )
-    ENDIF( NOT EXIV2_EXIV2_ENABLE_LIBXMP )
+    ENDIF( NOT EXIV2_ENABLE_LIBXMP )
 ENDIF( EXIV2_ENABLE_XMP )
 
 # ******************************************************************************
@@ -188,9 +188,9 @@ SET_TARGET_PROPERTIES( exiv2 PROPERTIES VERSION ${GENERIC_LIB_VERSION}
 
 TARGET_LINK_LIBRARIES( exiv2 ${EXPAT_LIBRARIES} )
 
-if( EXIV2_EXIV2_ENABLE_LIBXMP )
+if( EXIV2_ENABLE_LIBXMP )
     TARGET_LINK_LIBRARIES( exiv2 ${XMPLIB} )
-ENDIF( EXIV2_EXIV2_ENABLE_LIBXMP )
+ENDIF( EXIV2_ENABLE_LIBXMP )
 
 IF( EXIV2_ENABLE_PNG )
     IF( ZLIB_FOUND )