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| author | Nobuyoshi Nakada <nobu@ruby-lang.org> | 2021-05-05 09:41:07 +0900 |
|---|---|---|
| committer | Nobuyoshi Nakada <nobu@ruby-lang.org> | 2021-05-05 10:10:59 +0900 |
| commit | 5bde2e61db8148cd5a7974f640aee38be60bf368 (patch) | |
| tree | a950f30353e05fa93f983ff5166915759e40f0b7 /configure.ac | |
| parent | 44cff500a0ad565952e84935bc98523c36a91b06 (diff) | |
Workaround for gcc-4 bug
False positive `-Wundef` in `#elif` after `#if defined`.
Notes
Notes:
Merged: https://github.com/ruby/ruby/pull/4459
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index 6605939eac..2d11169728 100644 --- a/configure.ac +++ b/configure.ac @@ -627,7 +627,6 @@ AS_CASE(["$GCC:${warnflags+set}:${extra_warnflags:+set}:"], -Werror=pointer-arith \ -Werror=shorten-64-to-32 \ -Werror=write-strings \ - -Werror=undef \ -Wimplicit-fallthrough=0 \ -Wmissing-noreturn \ -Wno-cast-function-type \ @@ -663,6 +662,18 @@ AS_CASE(["$GCC:${warnflags+set}:${extra_warnflags:+set}:"], ]) ]) done + AS_IF([test "$particular_werror_flags" = "yes"], [ + wflag=-Werror=undef + ], [ + wflag=-Wundef + ]) + RUBY_TRY_CFLAGS($wflag, [ + RUBY_APPEND_OPTIONS(warnflags, $wflag) + ], [], [ + @%:@if !defined(RUBY_CONFIG_TEST_NEVER_DEFINED_SYMBOL) + @%:@elif RUBY_CONFIG_TEST_NEVER_DEFINED_SYMBOL + @%:@endif + ]) AS_CASE([" $warnflags "],[*" -Wno-missing-field-initializers "*], [wflag="-Wall -Wextra"], [wflag=-Wall]) RUBY_TRY_CFLAGS($wflag, [warnflags="$wflag${warnflags+ $warnflags}"]) |