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Check if we need to define _XOPEN_SOURCE for struct msghdr.msg_control 

Required to expose the structure members in Solaris headers, since it
was an XPG4/UNIX95 addition to the Solaris ABI.

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
This commit is contained in:
Alan Coopersmith 2013-11-07 20:23:27 -08:00
parent af8067cbf4
commit e8663a9358
1 changed files with 34 additions and 0 deletions
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34
configure.ac
View File

@ -90,6 +90,40 @@ xauto)
;;
esac
# XPG4v2/UNIX95 added msg_control - check to see if we need to define
# _XOPEN_SOURCE to get it (such as on Solaris)
AC_CHECK_MEMBER([struct msghdr.msg_control], [], [],
[
AC_INCLUDES_DEFAULT
#include <sys/socket.h>
])
# First try for Solaris in C99 compliant mode, which requires XPG6/UNIX03
if test "x$ac_cv_member_struct_msghdr_msg_control" = xno; then
unset ac_cv_member_struct_msghdr_msg_control
AC_MSG_NOTICE([trying again with _XOPEN_SOURCE=600])
AC_CHECK_MEMBER([struct msghdr.msg_control],
[AC_DEFINE([_XOPEN_SOURCE], [600],
[Defined if needed to expose struct msghdr.msg_control])
], [], [
#define _XOPEN_SOURCE 600
AC_INCLUDES_DEFAULT
#include <sys/socket.h>
])
fi
# If that didn't work, fall back to XPG5/UNIX98 with C89
if test "x$ac_cv_member_struct_msghdr_msg_control" = xno; then
unset ac_cv_member_struct_msghdr_msg_control
AC_MSG_NOTICE([trying again with _XOPEN_SOURCE=500])
AC_CHECK_MEMBER([struct msghdr.msg_control],
[AC_DEFINE([_XOPEN_SOURCE], [500],
[Defined if needed to expose struct msghdr.msg_control])
], [sendfds="no"], [
#define _XOPEN_SOURCE 500
AC_INCLUDES_DEFAULT
#include <sys/socket.h>
])
fi
case x$sendfds in
xyes)
AC_DEFINE([HAVE_SENDMSG],1,[Define if your platform supports sendmsg])