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-rw-r--r--modules/FindBZip2.cmake6
1 files changed, 3 insertions, 3 deletions
diff --git a/modules/FindBZip2.cmake b/modules/FindBZip2.cmake
index d6ade67a..0f05e0bf 100644
--- a/modules/FindBZip2.cmake
+++ b/modules/FindBZip2.cmake
@@ -8,14 +8,14 @@
# BZIP2_NEED_PREFIX - this is set if the functions are prefixed with BZ2_
-IF (CACHED_BZIP2)
+IF (DEFINED CACHED_BZIP2)
# in cache already
IF ("${CACHED_BZIP2}" STREQUAL "YES")
SET(BZIP2_FOUND TRUE)
ENDIF ("${CACHED_BZIP2}" STREQUAL "YES")
-ELSE (CACHED_BZIP2)
+ELSE (DEFINED CACHED_BZIP2)
FIND_PATH(BZIP2_INCLUDE_DIR bzlib.h
/usr/include
@@ -50,4 +50,4 @@ ELSE (CACHED_BZIP2)
set(CACHED_BZIP2 ${CACHED_BZIP2} CACHE INTERNAL "If bzip2 was checked")
MARK_AS_ADVANCED(BZIP2_INCLUDE_DIR BZIP2_LIBRARIES)
-ENDIF( CACHED_BZIP2 )
+ENDIF(DEFINED CACHED_BZIP2)