From 0a021c3bd139d6c081d49ccbd7217c503cc6ff7b Mon Sep 17 00:00:00 2001 From: mj-xmr Date: Wed, 11 Aug 2021 16:24:17 +0200 Subject: [PATCH] CMake: document -Werror for add_c_flag_if_supported() from #7718 --- CMakeLists.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/CMakeLists.txt b/CMakeLists.txt index e3e31767d..8240a6588 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})