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-rw-r--r--CMakeLists.txt2
1 files changed, 2 insertions, 0 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt
index f8af45f4b..d06729931 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -106,6 +106,8 @@ function (die msg)
endfunction ()
function (add_c_flag_if_supported flag var)
+ # Prepending the flag with -Werror will only add the flag,
+ # if it doesn't result in generation of a warning of using a flag unknown to the compiler.
set(TMP "-Werror ${flag}")
string(REGEX REPLACE "[- ]" "_" supported ${TMP}_c)
check_c_compiler_flag(${TMP} ${supported})