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# ===========================================================================
# http://www.gnu.org/software/autoconf-archive/ax_lua.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_WITH_LUA
# AX_LUA_VERSION (MIN-VERSION, [TOO-BIG-VERSION])
# AX_LUA_HEADERS
# AX_LUA_LIBS
# AX_LUA_LIB_VERSION (MIN-VERSION, [TOO-BIG-VERSION])
#
# DESCRIPTION
#
# Detect Lua interpreter, headers and libraries, optionally enforcing a
# particular range of versions.
#
# AX_WITH_LUA searches for Lua interpreter and defines LUA if found.
#
# AX_LUA_VERSION checks that the version of Lua is at least MIN-VERSION
# and less than TOO-BIG-VERSION, if given.
#
# AX_LUA_HEADERS searches for Lua headers and defines HAVE_LUA_H and
# HAVE_LUALIB_H if found, and defines LUA_INCLUDE to the preprocessor
# flags needed, if any.
#
# AX_LUA_LIBS searches for Lua libraries and defines LUA_LIB if found.
#
# AX_LUA_LIB_VERSION checks that the Lua libraries' version is at least
# MIN-VERSION, and less than TOO-BIG-VERSION, if given.
#
# Versions are specified as three-digit integers whose first digit is the
# major version and last two are the minor version (the same format as
# LUA_VERSION_NUM in lua.h); e.g. 501 for Lua 5.1. The revision (e.g. the
# "3" in "5.1.3") is ignored.
#
# The following options are added by these macros:
#
# --with-lua-prefix=DIR Lua files are in DIR.
# --with-lua-suffix=ARG Lua binaries and library files are
# suffixed with ARG.
#
# LICENSE
#
# Copyright (c) 2012 Hisham Muhammad <h@hisham.hm>
# Copyright (c) 2009 Reuben Thomas <rrt@sc3d.org>
# Copyright (c) 2009 Matthieu Moy <Matthieu.Moy@imag.fr>
# Copyright (c) 2009 Tom Payne <twpayne@gmail.com>
#
# 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, 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. If not, see <http://www.gnu.org/licenses/>.
#
# As a special exception, the respective Autoconf Macro's copyright owner
# gives unlimited permission to copy, distribute and modify the configure
# scripts that are the output of Autoconf when processing the Macro. You
# need not follow the terms of the GNU General Public License when using
# or distributing such scripts, even though portions of the text of the
# Macro appear in them. The GNU General Public License (GPL) does govern
# all other use of the material that constitutes the Autoconf Macro.
#
# This special exception to the GPL applies to versions of the Autoconf
# Macro released by the Autoconf Archive. When you make and distribute a
# modified version of the Autoconf Macro, you may extend this special
# exception to the GPL to apply to your modified version as well.
#serial 7
dnl Helper function to declare extra options
AC_DEFUN([_AX_LUA_OPTS],
[AC_ARG_WITH([lua-prefix],
[AS_HELP_STRING([--with-lua-prefix=DIR],
[Lua files are in DIR])])
AC_ARG_WITH([lua-suffix],
[AS_HELP_STRING([--with-lua-suffix=ARG],
[Lua binary and library files are suffixed with ARG])])])dnl
AC_DEFUN([AX_WITH_LUA],
[_AX_LUA_OPTS
if test "x$with_lua_prefix" = x; then
lua_search_path="$PATH"
else
lua_search_path="$with_lua_prefix/bin"
fi
if test "x$LUA" = x; then
AC_PATH_PROG([LUA], [lua$with_lua_suffix], [], [$lua_search_path])
fi])dnl
dnl Helper function to parse minimum & maximum versions
AC_DEFUN([_AX_LUA_VERSIONS],
[lua_min_version=$1
lua_max_version=$2
if test "x$lua_min_version" = x; then
lua_min_version=0
fi
if test "x$lua_max_version" = x; then
lua_max_version=1000
fi])
AC_DEFUN([AX_LUA_VERSION],
[_AX_LUA_OPTS
AC_MSG_CHECKING([Lua version is in range $1 <= v < $2])
_AX_LUA_VERSIONS($1, $2)
if test "x$LUA" != x; then
lua_text_version=$(LUA_INIT= $LUA -v 2>&1 | head -n 1 | cut -d' ' -f2)
case $lua_text_version in
5.3*)
lua_version=503
;;
5.2*)
lua_version=502
;;
5.1*)
lua_version=501
;;
5.0*)
lua_version=500
;;
4.0*)
lua_version=400
;;
*)
lua_version=-1
;;
esac
if test $lua_version -ge "$lua_min_version" -a $lua_version -lt "$lua_max_version"; then
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
AC_MSG_FAILURE([Lua version not in desired range.])
fi
else
AC_MSG_RESULT([no])
AC_MSG_FAILURE([Lua version not in desired range.])
fi])dnl
AC_DEFUN([AX_LUA_HEADERS],
[_AX_LUA_OPTS
if test "x$with_lua_includes" != x; then
LUA_INCLUDE="-I$with_lua_includes"
elif test "x$with_lua_prefix" != x; then
if test -e "$with_lua_prefix/include/lua5.3"; then
LUA_INCLUDE="-I$with_lua_prefix/include/lua5.3"
elif test -e "$with_lua_prefix/include/lua5.2"; then
LUA_INCLUDE="-I$with_lua_prefix/include/lua5.2"
elif test -e "$with_lua_prefix/include/lua5.1"; then
LUA_INCLUDE="-I$with_lua_prefix/include/lua5.1"
else
LUA_INCLUDE="-I$with_lua_prefix/include"
fi
elif test -e "/usr/include/lua5.3"; then
LUA_INCLUDE="-I/usr/include/lua5.3"
elif test -e "/usr/include/lua5.2"; then
LUA_INCLUDE="-I/usr/include/lua5.2"
elif test -e "/usr/include/lua5.1"; then
LUA_INCLUDE="-I/usr/include/lua5.1"
fi
LUA_OLD_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $LUA_INCLUDE"
AC_CHECK_HEADERS([lua.h lualib.h])
CPPFLAGS="$LUA_OLD_CPPFLAGS"])dnl
AC_DEFUN([AX_LUA_LIBS],
[_AX_LUA_OPTS
if test "x$with_lua_prefix" != x; then
LUA_LIB="-L$with_lua_prefix/lib"
LUA_LIBLUA="$with_lua_prefix/lib/liblua$with_lua_suffix.a"
else
# try to find static library
for dir in `echo $LD_LIBRARY_PATH | tr ':' ' '` /usr /usr/local
do
LUA_LIBLUA="$dir/lib/liblua$with_lua_suffix.a"
if test -e "$LUA_LIBLUA"
then
break
fi
done
fi
# if static library not found, use dynamic
if ! test -e "$LUA_LIBLUA"; then
LUA_LIBLUA="-llua$with_lua_suffix"
fi
AC_CHECK_LIB([m], [exp], [lua_extra_libs="$lua_extra_libs -lm"], [])
AC_CHECK_LIB([dl], [dlopen], [lua_extra_libs="$lua_extra_libs -ldl"], [])
AC_CHECK_LIB([lua$with_lua_suffix],
[lua_error],
[LUA_LIB="$LUA_LIB $LUA_LIBLUA $lua_extra_libs"],
[],
[$LUA_LIB $lua_extra_libs])])dnl
AC_DEFUN([AX_LUA_LIB_VERSION],
[_AX_LUA_OPTS
AC_MSG_CHECKING([liblua version is in range $1 <= v < $2])
_AX_LUA_VERSIONS($1, $2)
LUA_OLD_LIBS="$LIBS"
LIBS="$LIBS $LUA_LIB"
LUA_OLD_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $LUA_INCLUDE"
AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <lua.h>
#include <stdlib.h>
#include <stdio.h>
int main()
{
printf("(found %s, %d)... ", LUA_VERSION, LUA_VERSION_NUM);
if (LUA_VERSION_NUM >= $lua_min_version && LUA_VERSION_NUM < $lua_max_version)
exit(EXIT_SUCCESS);
exit(EXIT_FAILURE);
}
]])],
[AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([no])
AC_MSG_FAILURE([Lua libraries version not in desired range])])
LIBS="$LUA_OLD_LIBS"
CPPFLAGS="$LUA_OLD_CPPFLAGS"])dnl
AC_DEFUN([AX_LUA_TRY_LIB_VERSION],
[_AX_LUA_OPTS
_AX_LUA_VERSIONS($1, $2)
AC_CACHE_CHECK([if liblua version is in range $1 <= v < $2], [ax_cv_lua_try_lib_version], [
LUA_OLD_LIBS="$LIBS"
LUA_OLD_CPPFLAGS="$CPPFLAGS"
LIBS="$LIBS $LUA_LIB"
CPPFLAGS="$CPPFLAGS $LUA_INCLUDE"
AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <lua.h>
#include <stdlib.h>
#include <stdio.h>
int main()
{
printf("(found %s, %d)... ", LUA_VERSION, LUA_VERSION_NUM);
if (LUA_VERSION_NUM >= $lua_min_version && LUA_VERSION_NUM < $lua_max_version)
exit(EXIT_SUCCESS);
exit(EXIT_FAILURE);
}
]])],
[AC_MSG_RESULT([yes])
$3
],
[
AC_MSG_RESULT([no])
$4
])
LIBS="$LUA_OLD_LIBS"
CPPFLAGS="$LUA_OLD_CPPFLAGS"
])
])dnl