# ===========================================================================
-# http://www.gnu.org/software/autoconf-archive/ax_lua.html
+# https://www.gnu.org/software/autoconf-archive/ax_lua.html
# ===========================================================================
#
# SYNOPSIS
# header is checked to match the Lua interpreter version exactly. When
# searching for Lua libraries, the version number is used as a suffix.
# This is done with the goal of supporting multiple Lua installs (5.1,
-# 5.2, and 5.3 side-by-side).
+# 5.2, 5.3, and 5.4 side-by-side).
#
# A note on compatibility with previous versions: This file has been
# mostly rewritten for serial 18. Most developers should be able to use
# interpreter. If LUA is blank, the user's path is searched for an
# suitable interpreter.
#
+# Optionally a LUAJIT option may be set ahead of time to look for and
+# validate a LuaJIT install instead of PUC Lua. Usage might look like:
+#
+# AC_ARG_WITH(luajit, [AS_HELP_STRING([--with-luajit],
+# [Prefer LuaJIT over PUC Lua, even if the latter is newer. Default: no])
+# ])
+# AM_CONDITIONAL([LUAJIT], [test "x$with_luajit" != 'xno'])
+#
# If MINIMUM-VERSION is supplied, then only Lua interpreters with a
# version number greater or equal to MINIMUM-VERSION will be accepted. If
# TOO-BIG-VERSION is also supplied, then only Lua interpreters with a
# appropriate Automake primary, e.g. lua_SCRIPS or luaexec_LIBRARIES.
#
# If an acceptable Lua interpreter is found, then ACTION-IF-FOUND is
-# performed, otherwise ACTION-IF-NOT-FOUND is preformed. If ACTION-IF-NOT-
+# performed, otherwise ACTION-IF-NOT-FOUND is performed. If ACTION-IF-NOT-
# FOUND is blank, then it will default to printing an error. To prevent
# the default behavior, give ':' as an action.
#
#
# LICENSE
#
+# Copyright (c) 2023 Caleb Maclennan <caleb@alerque.com>
# Copyright (c) 2015 Reuben Thomas <rrt@sc3d.org>
# Copyright (c) 2014 Tim Perkins <tprk77@gmail.com>
#
# 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/>.
+# with this program. If not, see <https://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
# modified version of the Autoconf Macro, you may extend this special
# exception to the GPL to apply to your modified version as well.
-#serial 39
+#serial 47
dnl =========================================================================
dnl AX_PROG_LUA([MINIMUM-VERSION], [TOO-BIG-VERSION],
AC_ARG_VAR([LUA], [The Lua interpreter, e.g. /usr/bin/lua5.1])
dnl Find a Lua interpreter.
- m4_define_default([_AX_LUA_INTERPRETER_LIST],
- [lua lua5.3 lua53 lua5.2 lua52 lua5.1 lua51 lua50])
+ m4_define_default([_ax_lua_interpreter_list],
+ [lua lua5.4 lua54 lua5.3 lua53 lua5.2 lua52 lua5.1 lua51 lua50])
m4_if([$1], [],
[ dnl No version check is needed. Find any Lua interpreter.
AS_IF([test "x$LUA" = 'x'],
- [AC_PATH_PROGS([LUA], [_AX_LUA_INTERPRETER_LIST], [:])])
+ [AC_PATH_PROGS([LUA], [_ax_lua_interpreter_list], [:])])
ax_display_LUA='lua'
AS_IF([test "x$LUA" != 'x:'],
[_ax_check_text="for a Lua interpreter with version >= $1, < $2"])
AC_CACHE_CHECK([$_ax_check_text],
[ax_cv_pathless_LUA],
- [ for ax_cv_pathless_LUA in _AX_LUA_INTERPRETER_LIST none; do
+ [ for ax_cv_pathless_LUA in _ax_lua_interpreter_list none; do
test "x$ax_cv_pathless_LUA" = 'xnone' && break
_AX_LUA_CHK_IS_INTRP([$ax_cv_pathless_LUA], [], [continue])
_AX_LUA_CHK_VER([$ax_cv_pathless_LUA], [$1], [$2], [break])
ax_cv_lua_version=[`$LUA -e '
-- return a version number in X.Y format
local _, _, ver = string.find(_VERSION, "^Lua (%d+%.%d+)")
- print(ver)'`]
+ print(ver or "")'`]
])
AS_IF([test "x$ax_cv_lua_version" = 'x'],
[AC_MSG_ERROR([invalid Lua version number])])
dnl Some default directories to search.
LUA_SHORT_VERSION=`echo "$LUA_VERSION" | $SED 's|\.||'`
- m4_define_default([_AX_LUA_INCLUDE_LIST],
+ m4_define_default([_ax_lua_include_list],
[ /usr/include/lua$LUA_VERSION \
/usr/include/lua-$LUA_VERSION \
/usr/include/lua/$LUA_VERSION \
dnl Try some other directories if LUA_INCLUDE was not set.
AS_IF([test "x$LUA_INCLUDE" = 'x' &&
- test "x$ac_cv_header_lua_h" != 'xyes'],
+ test "x$ac_cv_header_lua_h" != 'xyes' ||
+ test "x$with_luajit" != 'xno' &&
+ test "x$ac_cv_header_luajit_h" != 'xyes'],
[ dnl Try some common include paths.
- for _ax_include_path in _AX_LUA_INCLUDE_LIST; do
+ for _ax_include_path in _ax_lua_include_list; do
test ! -d "$_ax_include_path" && continue
AC_MSG_CHECKING([for Lua headers in])
AS_UNSET([ac_cv_header_lualib_h])
AS_UNSET([ac_cv_header_lauxlib_h])
AS_UNSET([ac_cv_header_luaconf_h])
+ AS_UNSET([ac_cv_header_luajit_h])
_ax_lua_saved_cppflags=$CPPFLAGS
CPPFLAGS="$CPPFLAGS -I$_ax_include_path"
])
AS_IF([test "x$ac_cv_header_lua_h" = 'xyes'],
- [ AC_CACHE_CHECK([for Lua header version],
- [ax_cv_lua_header_version],
- [
- ax_cv_lua_header_version=`echo LUA_VERSION | \
- $CC -P -E $LUA_INCLUDE -imacros lua.h - | \
- $SED -e 's%"@<:@@<:@:space:@:>@@:>@*"%%g' -e 's%^@<:@@<:@:space:@:>@@:>@*%%' | \
- tr -d '"\n' | \
- $SED -n "s|^Lua \(@<:@0-9@:>@\{1,\}\.@<:@0-9@:>@\{1,\}\).\{0,\}|\1|p"`
- ])
-
- dnl Compare this to the previously found LUA_VERSION.
- AC_MSG_CHECKING([if Lua header version matches $LUA_VERSION])
- AS_IF([test "x$ax_cv_lua_header_version" = "x$LUA_VERSION"],
- [ AC_MSG_RESULT([yes])
- ax_header_version_match='yes'
+ [ dnl Make a program to print LUA_VERSION defined in the header.
+ dnl TODO It would be really nice if we could do this without compiling a
+ dnl program, then it would work when cross compiling. But I'm not sure how
+ dnl to do this reliably. For now, assume versions match when cross compiling.
+
+ AS_IF([test "x$cross_compiling" != 'xyes'],
+ [ AC_CACHE_CHECK([for Lua header version],
+ [ax_cv_lua_header_version],
+ [ _ax_lua_saved_cppflags=$CPPFLAGS
+ CPPFLAGS="$CPPFLAGS $LUA_INCLUDE"
+ AC_COMPUTE_INT(ax_cv_lua_header_version_major,[LUA_VERSION_NUM/100],[AC_INCLUDES_DEFAULT
+#include <lua.h>
+],[ax_cv_lua_header_version_major=unknown])
+ AC_COMPUTE_INT(ax_cv_lua_header_version_minor,[LUA_VERSION_NUM%100],[AC_INCLUDES_DEFAULT
+#include <lua.h>
+],[ax_cv_lua_header_version_minor=unknown])
+ AS_IF([test "x$ax_cv_lua_header_version_major" = xunknown || test "x$ax_cv_lua_header_version_minor" = xunknown],[
+ ax_cv_lua_header_version=unknown
+ ],[
+ ax_cv_lua_header_version="$ax_cv_lua_header_version_major.$ax_cv_lua_header_version_minor"
+ ])
+ CPPFLAGS=$_ax_lua_saved_cppflags
+ ])
+
+ dnl Compare this to the previously found LUA_VERSION.
+ AC_MSG_CHECKING([if Lua header version matches $LUA_VERSION])
+ AS_IF([test "x$ax_cv_lua_header_version" = "x$LUA_VERSION"],
+ [ AC_MSG_RESULT([yes])
+ ax_header_version_match='yes'
+ ],
+ [ AC_MSG_RESULT([no])
+ ax_header_version_match='no'
+ ])
],
- [ AC_MSG_RESULT([no])
- ax_header_version_match='no'
+ [ AC_MSG_WARN([cross compiling so assuming header version number matches])
+ ax_header_version_match='yes'
])
])
],
[_ax_found_lua_libs='yes'],
[_ax_found_lua_libs='no'],
- [$_ax_lua_extra_libs])
+ [$_ax_lua_extra_libs])])
LIBS=$_ax_lua_saved_libs
AS_IF([test "x$ac_cv_search_lua_load" != 'xno' &&
projects / matthieu / frr.git / commitdiff