diff options
Diffstat (limited to 'ext/kcar/extconf.rb')
| -rw-r--r-- | ext/kcar/extconf.rb | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/ext/kcar/extconf.rb b/ext/kcar/extconf.rb index 89ac586..b65846a 100644 --- a/ext/kcar/extconf.rb +++ b/ext/kcar/extconf.rb @@ -6,15 +6,20 @@ dir_config("kcar") have_macro("SIZEOF_OFF_T", "ruby.h") or check_sizeof("off_t", "sys/types.h") have_macro("SIZEOF_LONG", "ruby.h") or check_sizeof("long", "sys/types.h") -uminus_dedupe = false +message('checking if String#-@ (str_uminus) dedupes... ') begin - # oddly, opt_str_freeze is not always effective: - # https://bugs.ruby-lang.org/issues/13282 a = -(%w(t e s t).join) b = -(%w(t e s t).join) - uminus_dedupe = a.object_id == b.object_id + if a.equal?(b) + $CPPFLAGS += " -DSTR_UMINUS_DEDUPE=1 " + message("yes\n") + else + $CPPFLAGS += " -DSTR_UMINUS_DEDUPE=0 " + message("no, needs Ruby 2.5+\n") + end rescue NoMethodError + $CPPFLAGS += " -DSTR_UMINUS_DEDUPE=0 " + message("no, String#-@ not available\n") end -$CFLAGS += " -DSTR_UMINUS_DEDUPE=#{uminus_dedupe ? 1 : 0}" create_makefile("kcar_ext") |