# ===========================================================================
# http://www.gnu.org/software/autoconf-archive/ax_perl_ext_flags.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_PERL_EXT_FLAGS([CFLAGS-VARIABLE], [LDFLAGS-VARIABLE], [EXTRA-MODULES])
# AX_PERL_EXT_CFLAGS([CFLAGS-VARIABLE])
# AX_PERL_EXT_LDFLAGS([LDFLAGS-VARIABLE], [EXTRA-MODULES])
#
# DESCRIPTION
#
# Fetches the linker flags and C compiler flags for compiling and linking
# programs that embed a Perl interpreter. If the EXTRA-MODULES argument is
# submitted, it is a space separated list of extra modules to link. The
# flags will be stored in the provided variables.
#
# Examples:
#
# AX_PERL_EXT_FLAGS([PERLXS_CFLAGS], [PERLXS_LDFLAGS])
# AC_SUBST([PERLXS_CFLAGS])
# AC_SUBST([PERLXS_LDFLAGS])
#
# AX_PERL_EXT_CFLAGS([PERLXS_CFLAGS])
# AC_SUBST([PERLXS_CFLAGS])
#
# AX_PERL_EXT_LDFLAGS([PERLXS_LDFLAGS], [-std Socket])
#
# LICENSE
#
# Copyright (c) 2009 Mats Kindahl of Sun Microsystems <mats@sun.com>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# 3. The name of the author may not be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#serial 5
AC_DEFUN([AX_PERL_EXT_CFLAGS],
[AC_CHECK_PROG(PERL,perl,perl)
_AX_PERL_EXT_MODULE_CHECK([ExtUtils::Embed], [have_embed=yes],
[have_embed=no])
AS_IF([test $have_embed = no],
AC_MSG_ERROR([Require ExtUtils::Embed to proceed]))
_AX_PERL_EXT_EMBED_CHECK([$1],[ccopts])
])
AC_DEFUN([AX_PERL_EXT_LDFLAGS],
[AC_CHECK_PROG(PERL,perl,perl)
_AX_PERL_EXT_MODULE_CHECK([ExtUtils::Embed], [have_embed=yes],
[have_embed=no])
AS_IF([test $have_embed = no],
AC_MSG_ERROR([Require ExtUtils::Embed to proceed]))
_AX_PERL_EXT_EMBED_CHECK([$1],[ldopts],[$2])
])
AC_DEFUN([AX_PERL_EXT_FLAGS],
[AC_CHECK_PROG(PERL,perl,perl)
_AX_PERL_EXT_MODULE_CHECK([ExtUtils::Embed], [have_embed=yes],
[have_embed=no])
AS_IF([test $have_embed = no],
AC_MSG_ERROR([Require ExtUtils::Embed to proceed]))
_AX_PERL_EXT_EMBED_CHECK([$1],[ccopts])
_AX_PERL_EXT_EMBED_CHECK([$2],[ldopts],[$3])
])
dnl _AX_PERL_EXT_MODULE_CHECK(MODULE-NAME, ACTION-IF-FOUND, ACTION-IF-NOT-FOUND)
dnl
dnl Check for the existance of the perl module given by MODULE-NAME.
dnl
AC_DEFUN([_AX_PERL_EXT_MODULE_CHECK],
[AC_MSG_CHECKING([for perl module $1])
$PERL "-M$1" -e exit > /dev/null 2>&1
AS_IF([test $? -eq 0],
[AC_MSG_RESULT(yes)
$2],
[AC_MSG_RESULT(no)
$3])
])
dnl _AX_PERL_EXT_EMBED_CHECK(VARIABLE, COMMAND, [EXTRA-FLAGS]) Use
dnl
dnl ExtUtils::Embed fetch flags for embedding Perl in a C/C++
dnl application
dnl
AC_DEFUN([_AX_PERL_EXT_EMBED_CHECK],
[AC_MSG_CHECKING([for perl $2 embed flags])
ax_c_perlxs_extras="$3"
$1=`$PERL -MExtUtils::Embed -e $2 ${ax_c_perlxs_extras:+"-- $3"}`
AC_MSG_RESULT($$1)
])
