#
# Copyright (c) 2006, 2009, Innobase Oy. All Rights Reserved.
# 
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation; version 2 of the License.
# 
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc., 59 Temple
# Place, Suite 330, Boston, MA 02111-1307 USA
#

MYSQL_STORAGE_ENGINE(innodb_plugin,, [InnoDB Storage Engine],
        [Transactional Tables using InnoDB], [max,max-no-ndb])
MYSQL_PLUGIN_DIRECTORY(innodb_plugin, [storage/innodb_plugin])
MYSQL_PLUGIN_DYNAMIC(innodb_plugin,  [ha_innodb_plugin.la])
MYSQL_PLUGIN_ACTIONS(innodb_plugin,  [
  AC_CHECK_HEADERS(sched.h)
  AC_CHECK_SIZEOF(int, 4)
  AC_CHECK_SIZEOF(long, 4)
  AC_CHECK_SIZEOF(void*, 4)
  AC_CHECK_FUNCS(sched_yield fdatasync localtime_r)
  AC_C_BIGENDIAN
  case "$target_os" in
	lin*)
		CFLAGS="$CFLAGS -DUNIV_LINUX";;
	hpux10*)
		CFLAGS="$CFLAGS -DUNIV_MUST_NOT_INLINE -DUNIV_HPUX -DUNIV_HPUX10";;
	hp*)
		CFLAGS="$CFLAGS -DUNIV_MUST_NOT_INLINE -DUNIV_HPUX";;
	aix*)
		CFLAGS="$CFLAGS -DUNIV_AIX";;
	irix*|osf*|sysv5uw7*|openbsd*)
		CFLAGS="$CFLAGS -DUNIV_MUST_NOT_INLINE";;
	*solaris*|*SunOS*)
		# Begin Solaris atomic function checks
		AC_CHECK_FUNCS(atomic_cas_ulong atomic_cas_32 \
			       atomic_cas_64 atomic_add_long,
			AC_DEFINE(
				[HAVE_SOLARIS_ATOMICS],
				[1],
				[Define to 1 if Solaris supports \
				 atomic functions.]))
		### End Solaris atomic function checks

		CFLAGS="$CFLAGS -DUNIV_SOLARIS";;
  esac
  INNODB_DYNAMIC_CFLAGS="-DMYSQL_DYNAMIC_PLUGIN"
  case "$target_cpu---$target_os" in
	x86_64---*)
		# The AMD64 ABI forbids absolute addresses in shared libraries
		;;
	*---solaris*|*---SunOS*)
		# Shared objects must be linked from PIC code on Solaris.
		;;
	*86---)
		# Use absolute addresses on IA-32
		INNODB_DYNAMIC_CFLAGS="$INNODB_DYNAMIC_CFLAGS -prefer-non-pic"
		;;
  esac
  AC_SUBST(INNODB_DYNAMIC_CFLAGS)
  AC_MSG_CHECKING(whether pthread_t can be used by GCC atomic builtins)
  AC_TRY_RUN(
    [
      #include <pthread.h>
      #include <string.h>

      int main(int argc, char** argv) {
        pthread_t       x1;
        pthread_t       x2;
        pthread_t       x3;

	memset(&x1, 0x0, sizeof(x1));
	memset(&x2, 0x0, sizeof(x2));
	memset(&x3, 0x0, sizeof(x3));

        __sync_bool_compare_and_swap(&x1, x2, x3);

        return(0);
      }
    ],
    [
      AC_DEFINE([HAVE_ATOMIC_PTHREAD_T], [1],
                [pthread_t can be used by GCC atomic builtins])
      AC_MSG_RESULT(yes)
    ],
    [
      AC_MSG_RESULT(no)
    ]
    )

  # Try using solaris atomics on SunOS if GCC atomics are not available
  AC_CHECK_DECLS(
    [HAVE_ATOMIC_PTHREAD_T],
    [
      AC_MSG_NOTICE(no need to check pthread_t size)
    ],
    [
      AC_CHECK_DECLS(
        [HAVE_SOLARIS_ATOMICS],
        [
          AC_MSG_CHECKING(checking if pthread_t type is integral)
          AC_TRY_RUN(
            [
              #include <pthread.h>
              int main()
              {
                pthread_t x = 0;
                return(0);
              }
            ],
            [
              AC_DEFINE([HAVE_ATOMIC_PTHREAD_T], [1],
                [pthread_t can be used by solaris atomics])
              AC_MSG_RESULT(yes)
              # size of pthread_t is needed for typed solaris atomics
              AC_CHECK_SIZEOF([pthread_t], [], [#include <pthread.h>])
            ],
            [
              AC_MSG_RESULT(no)
            ])
        ])
    ])
  # Check for x86 PAUSE instruction
  AC_MSG_CHECKING(for x86 PAUSE instruction)
  # We have to actually try running the test program, because of a bug
  # in Solaris on x86_64, where it wrongly reports that PAUSE is not
  # supported when trying to run an application. See
  # http://bugs.opensolaris.org/bugdatabase/printableBug.do?bug_id=6478684
  # We use ib_ prefix to avoid collisoins if this code is added to
  # mysql's configure.in.
  AC_TRY_RUN(
    [
      int main() {
        __asm__ __volatile__ ("pause");
        return(0);
      }
    ],
    [
      AC_DEFINE([IB_HAVE_PAUSE_INSTRUCTION], [1], [Does x86 PAUSE instruction exist])
      AC_MSG_RESULT(yes)
    ],
    [
      AC_MSG_RESULT(no)
    ],
    [
      AC_MSG_RESULT(no)
    ]
  )
  ])

# vim: set ft=config: