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| -rw-r--r-- | erts/configure.in | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/erts/configure.in b/erts/configure.in index 4bff2ebf3d..fe340b34eb 100644 --- a/erts/configure.in +++ b/erts/configure.in @@ -533,6 +533,7 @@ if test "x$GCC" = xyes; then # Treat certain GCC warnings as errors LM_TRY_ENABLE_CFLAG([-Werror=return-type], [WERRORFLAGS]) LM_TRY_ENABLE_CFLAG([-Werror=implicit], [WERRORFLAGS]) + LM_TRY_ENABLE_CFLAG([-Werror=undef], [WERRORFLAGS]) # until the emulator can handle this, I suggest we turn it off! #WFLAGS="-Wall -Wshadow -Wcast-qual -Wmissing-declarations" |