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-rwxr-xr-xllvm/cmake/config-ix.cmake2
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/cmake/config-ix.cmake b/llvm/cmake/config-ix.cmake
index 88eaa740175..b380a48637f 100755
--- a/llvm/cmake/config-ix.cmake
+++ b/llvm/cmake/config-ix.cmake
@@ -94,7 +94,7 @@ endif()
check_symbol_exists(getpagesize unistd.h HAVE_GETPAGESIZE)
check_symbol_exists(getrusage sys/resource.h HAVE_GETRUSAGE)
check_symbol_exists(setrlimit sys/resource.h HAVE_SETRLIMIT)
-check_function_exists(isatty HAVE_ISATTY)
+check_symbol_exists(isatty unistd.h HAVE_ISATTY)
check_symbol_exists(index strings.h HAVE_INDEX)
check_symbol_exists(isinf cmath HAVE_ISINF_IN_CMATH)
check_symbol_exists(isinf math.h HAVE_ISINF_IN_MATH_H)
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