configure.ac: move checks of -std=gnu99 and _XOPEN_SOURCE on Solaris
configure.ac (ansi_options): On Solaris, "-std=gnu99" should be appended to CPPFLAGS instead of warnflags and strict_warnflags, because the flag affects existance of functions and macros.
configure.ac (solaris*): Check _XOPEN_SOURCE just after checking "-std=gnu99" on Solaris. Because _XOPEN_SOURCE also affects existance of many functions and macros, it is good to define it earlier. The check is simplified to use AC_TRY_COMPILE with RUBY_WERROR_FLAG.
Added by ngoto (Naohisa Goto) over 7 years ago
configure.ac: move checks of -std=gnu99 and _XOPEN_SOURCE on Solaris
configure.ac (ansi_options): On Solaris, "-std=gnu99" should be
appended to CPPFLAGS instead of warnflags and strict_warnflags,
because the flag affects existance of functions and macros.
configure.ac (solaris*): Check _XOPEN_SOURCE just after checking
"-std=gnu99" on Solaris. Because _XOPEN_SOURCE also affects existance
of many functions and macros, it is good to define it earlier.
The check is simplified to use AC_TRY_COMPILE with RUBY_WERROR_FLAG.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63443 b2dd03c8-39d4-4d8f-98ff-823fe69b080e