diff options
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/configure.in b/configure.in index 8c50ef511e..ab53e8a2c2 100644 --- a/configure.in +++ b/configure.in @@ -610,10 +610,19 @@ if test "$GCC" = yes; then RUBY_APPEND_OPTION(LDFLAGS, -fstack-protector) fi - # ANSI (no XCFLAGS because this is C only) - RUBY_TRY_CFLAGS(-ansi -std=iso9899:199409, [ - RUBY_APPEND_OPTION(warnflags, -ansi -std=iso9899:199409) - RUBY_APPEND_OPTION(rb_cv_warnflags, -ansi -std=iso9899:199409) + AS_CASE(["$target_os"],[mingw*], [ + # On Windows platforms, system provided headers are VC++ + # optimized. That is, C++ habits are often contaminated into + # various headers. Most frequent situation is the use of // + # comments. We bypass ANSI C mode for them. Otherwise + # extension libs cannot include those headers. + ], + [ + # ANSI (no XCFLAGS because this is C only) + RUBY_TRY_CFLAGS(-ansi -std=iso9899:199409, [ + RUBY_APPEND_OPTION(warnflags, -ansi -std=iso9899:199409) + RUBY_APPEND_OPTION(rb_cv_warnflags, -ansi -std=iso9899:199409) + ]) ]) # suppress annoying -Wstrict-overflow warnings |