# ===========================================================================

# 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 <[email protected]>

# Copyright (c) 2009 Reuben Thomas <[email protected]>

# Copyright (c) 2009 Matthieu Moy <[email protected]>

# Copyright (c) 2009 Tom Payne <[email protected]>

#

# 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