diff options
| -rw-r--r-- | configure.ac | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index fa62b5fa85..6605939eac 100644 --- a/configure.ac +++ b/configure.ac @@ -627,6 +627,7 @@ AS_CASE(["$GCC:${warnflags+set}:${extra_warnflags:+set}:"], -Werror=pointer-arith \ -Werror=shorten-64-to-32 \ -Werror=write-strings \ + -Werror=undef \ -Wimplicit-fallthrough=0 \ -Wmissing-noreturn \ -Wno-cast-function-type \ |