# Configure script for gotools.
#   Copyright (C) 2015-2016 Free Software Foundation, Inc.
#
# This file 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; either version 3 of the License, or
# (at your option) any later version.
#
# 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; see the file COPYING3.  If not see
# <http://www.gnu.org/licenses/>.

AC_INIT(package-unused, version-unused,, gotools)
AC_PREREQ(2.64)
AC_CONFIG_SRCDIR(Makefile.am)

m4_include([config/go.m4])

# Determine the noncanonical names used for directories.
ACX_NONCANONICAL_BUILD
ACX_NONCANONICAL_HOST
ACX_NONCANONICAL_TARGET

dnl Autoconf 2.5x and later will set a default program prefix if
dnl --target was used, even if it was the same as --host.  Disable
dnl that behavior.  This must be done before AC_CANONICAL_SYSTEM
dnl to take effect.
test "$host_noncanonical" = "$target_noncanonical" &&
  test "$program_prefix$program_suffix$program_transform_name" = \
    NONENONEs,x,x, &&
  program_transform_name=s,y,y,

AC_CANONICAL_SYSTEM
AC_ARG_PROGRAM

AM_INIT_AUTOMAKE([1.9.3 no-define foreign no-dist -Wall -Wno-portability])
AM_MAINTAINER_MODE

AC_PROG_INSTALL

AC_PROG_CC
AC_PROG_GO

# These should be defined by the top-level configure.
# Copy them into Makefile.
AC_SUBST(GOC_FOR_TARGET)
AC_SUBST(GCC_FOR_TARGET)

AM_CONDITIONAL(NATIVE, test "$host_alias" = "$target_alias")

dnl Test for -lsocket and -lnsl.  Copied from libjava/configure.ac.
AC_CACHE_CHECK([for socket libraries], gotools_cv_lib_sockets,
  [gotools_cv_lib_sockets=
   gotools_check_both=no
   AC_CHECK_FUNC(connect, gotools_check_socket=no, gotools_check_socket=yes)
   if test "$gotools_check_socket" = "yes"; then
     unset ac_cv_func_connect
     AC_CHECK_LIB(socket, main, gotools_cv_lib_sockets="-lsocket",
     		  gotools_check_both=yes)
   fi
   if test "$gotools_check_both" = "yes"; then
     gotools_old_libs=$LIBS
     LIBS="$LIBS -lsocket -lnsl"
     unset ac_cv_func_accept
     AC_CHECK_FUNC(accept,
		   [gotools_check_nsl=no
		    gotools_cv_lib_sockets="-lsocket -lnsl"])
     unset ac_cv_func_accept
     LIBS=$gotools_old_libs
   fi
   unset ac_cv_func_gethostbyname
   gotools_old_libs="$LIBS"
   AC_CHECK_FUNC(gethostbyname, ,
		 [AC_CHECK_LIB(nsl, main,
		 	[gotools_cv_lib_sockets="$gotools_cv_lib_sockets -lnsl"])])
   unset ac_cv_func_gethostbyname
   LIBS=$gotools_old_libs
])
NET_LIBS="$gotools_cv_lib_sockets"
AC_SUBST(NET_LIBS)

dnl Test if -lrt is required for sched_yield and/or nanosleep.
AC_SEARCH_LIBS([sched_yield], [rt])
AC_SEARCH_LIBS([nanosleep], [rt])

AC_CONFIG_FILES(Makefile)

AC_OUTPUT