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Change logic to check _XOPEN_SOURCE on Solaris

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* configure.ac: Change logic to check _XOPEN_SOURCE on Solaris.
  With _XOPEN_SOURCE, "-std=gnu99" may also be added to CPPFLAGS.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63438 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
ngoto 2018-05-15 20:48:23 +00:00
parent 80bf542a6c
commit 577002efac
1 changed files with 12 additions and 11 deletions
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23
configure.ac
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@ -836,16 +836,7 @@ main()
AS_IF([test x"$define_xopen_source" != x], [
break
])
# Both AC_TRY_CPP and AC_TRY_COMPILE should pass
# because some options may not be set to CPPFLAGS.
AC_TRY_CPP([
#define _XOPEN_SOURCE ${tmp_xpg}00
#include <unistd.h>
#ifndef _XPG${tmp_xpg}
#error _XPG${tmp_xpg} should be defined by _XOPEN_SOURCE=${tmp_xpg}00
#endif
], [
AC_TRY_COMPILE([
RUBY_WERROR_FLAG([AC_TRY_COMPILE([
#define _XOPEN_SOURCE ${tmp_xpg}00
#include <unistd.h>
#ifndef _XPG${tmp_xpg}
@ -853,7 +844,7 @@ main()
#endif
], [],
[define_xopen_source=${tmp_xpg}00], [])
], [])
])
done
AS_IF([test x"$define_xopen_source" = x], [
define_xopen_source=no
@ -861,6 +852,16 @@ main()
AC_MSG_RESULT($define_xopen_source)
AS_IF([test x"$define_xopen_source" != xno], [
RUBY_APPEND_OPTIONS(CPPFLAGS, -D_XOPEN_SOURCE=$define_xopen_source)
# On Solaris, with gcc, "-std=gnu99" would be needed
# for using "-D_XOPEN_SOURCE=nnn" when nnn >= 600.
# ("-std=gnu99" have been added to both $warnflags and
# $strict_warnflags. During the above AC_TRY_COMPILE,
# $warnflags is effective, but the value will later be
# replaced with $rb_cv_warnflags.)
AS_CASE(["${warnflags}"],
[*-std=gnu99*], [
RUBY_APPEND_OPTIONS(CPPFLAGS, -std=gnu99)
])
])
])
],