diff options
| author | fanquake <fanquake@gmail.com> | 2024-04-03 15:29:29 +0100 |
|---|---|---|
| committer | fanquake <fanquake@gmail.com> | 2024-06-21 09:43:48 +0100 |
| commit | e3dc64f4990a15df3fd6147831f66fc2a31c71ad (patch) | |
| tree | 57dbb58fef97e67a41b3f369551e5be1eee91ffe | |
| parent | 82b43955f7948b225bebd08851a616d17f70a926 (diff) | |
build: add -Wundef
"Warn if an undefined identifier is evaluated in an #if directive. Such
identifiers are replaced with zero."
| -rw-r--r-- | configure.ac | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 6e040f5aa0..23b8870d43 100644 --- a/configure.ac +++ b/configure.ac @@ -405,6 +405,7 @@ AX_CHECK_COMPILE_FLAG([-Wimplicit-fallthrough], [WARN_CXXFLAGS="$WARN_CXXFLAGS - AX_CHECK_COMPILE_FLAG([-Wunreachable-code], [WARN_CXXFLAGS="$WARN_CXXFLAGS -Wunreachable-code"], [], [$CXXFLAG_WERROR]) AX_CHECK_COMPILE_FLAG([-Wdocumentation], [WARN_CXXFLAGS="$WARN_CXXFLAGS -Wdocumentation"], [], [$CXXFLAG_WERROR]) AX_CHECK_COMPILE_FLAG([-Wself-assign], [WARN_CXXFLAGS="$WARN_CXXFLAGS -Wself-assign"], [], [$CXXFLAG_WERROR]) +AX_CHECK_COMPILE_FLAG([-Wundef], [WARN_CXXFLAGS="$WARN_CXXFLAGS -Wundef"], [], [$CXXFLAG_WERROR]) dnl Some compilers (gcc) ignore unknown -Wno-* options, but warn about all dnl unknown options if any other warning is produced. Test the -Wfoo case, and |