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-rw-r--r--Modules/CheckIncludeFileCXX.cmake2
1 files changed, 1 insertions, 1 deletions
diff --git a/Modules/CheckIncludeFileCXX.cmake b/Modules/CheckIncludeFileCXX.cmake
index 39abeff..718e667 100644
--- a/Modules/CheckIncludeFileCXX.cmake
+++ b/Modules/CheckIncludeFileCXX.cmake
@@ -44,7 +44,7 @@
# License text for the above reference.)
macro(CHECK_INCLUDE_FILE_CXX INCLUDE VARIABLE)
- if("${VARIABLE}" MATCHES "^${VARIABLE}$")
+ if(NOT DEFINED "${VARIABLE}")
if(CMAKE_REQUIRED_INCLUDES)
set(CHECK_INCLUDE_FILE_CXX_INCLUDE_DIRS "-DINCLUDE_DIRECTORIES=${CMAKE_REQUIRED_INCLUDES}")
else()