- AS_IF([test "x$with_lua" != "xno"],[
- AS_IF([test "x$with_lua" = "xyes" -o "x$with_lua" = "xauto"],
- [for LUAPC in lua5.3 lua-5.3 lua53 lua5.2 lua-5.2 lua52 lua5.1 lua-5.1 lua51 lua; do
- PKG_CHECK_MODULES([LUA], $LUAPC >= 5.1, [
- AC_DEFINE([HAVE_LUA], [1], [Define to 1 if you have lua])
- with_lua=yes
- ], [LUAPC=""]) # otherwise pkg_check will fail
- if test "x$LUA_LIBS" != "x"; then break; fi
- done
- ],
- [LUAPC="$with_lua"
- PKG_CHECK_MODULES([LUA], $LUAPC >= 5.1, [
- AC_DEFINE([HAVE_LUA], [1], [Define to 1 if you have lua])
- with_lua=yes
+ AS_IF([test "x$with_lua" = "xno" -a "$1" = "mandatory"], [
+ AC_MSG_ERROR([--without-lua specified, but Lua is not optional])
+ ])
+
+ LUAPC=""
+ luajit_min_version='2.0.2'
+ lua_min_version='5.1'
+
+ AS_IF([test "x$with_lua" != "xno"], [
+ AS_IF([test "x$with_lua" != "xauto"], [
+ with_lua_version=${lua_min_version}
+ AS_IF([echo "x$with_lua" | ${GREP} 'jit' >/dev/null 2>&1], [with_lua_version=${luajit_min_version}])
+ PKG_CHECK_MODULES([LUA], $with_lua >= $with_lua_version, [
+ AC_DEFINE([HAVE_LUA], [1], [Define to 1 if you have Lua])
+ LUAPC=$with_lua
+ ], [
+ AC_MSG_ERROR([Selected Lua ($with_lua) not found])
+ ])
+ ], [
+ PKG_CHECK_MODULES([LUA], [luajit >= ${luajit_min_version}], [
+ LUAPC=luajit
+ AC_DEFINE([HAVE_LUA], [1], [Define to 1 if you have Lua])
+ ], [ : ])
+ AS_IF([test -z "$LUAPC"], [
+ found_lua=n
+ m4_foreach_w([luapc], [lua5.3 lua-5.3 lua53 lua5.2 lua-5.2 lua52 lua5.1 lua-5.1 lua51 lua], [
+ AS_IF([test "$found_lua" != "y"], [
+ PKG_CHECK_MODULES([LUA], [luapc >= ${lua_min_version}], [
+ AC_DEFINE([HAVE_LUA], [1], [Define to 1 if you have lua])
+ found_lua=y
+ LUAPC=luapc
+ ], [ : ])
+ ])