m4: want_lua - Fix Lua function checks

One has to use $LIBS variable to ensure libraries
come after conftest.c in configure.

Broken in af819cd2f43b8896d949a33f8099234ac57df6e5

diff --git a/m4/want_lua.m4 b/m4/want_lua.m4
index 7b049d7d2a6f7b8a9b9049bb37a0fd6daa0e98ba..b7bb89945b29ea76c63c0b7b2602e6b84eea4083 100644 (file)
--- a/m4/want_lua.m4
+++ b/m4/want_lua.m4
@@ -37,7 +37,9 @@ AC_DEFUN([DOVECOT_WANT_LUA],[
    )
    dnl Check if various lua functions are present
    old_CFLAGS="$CFLAGS"
-   CFLAGS="$CFLAGS $LUA_CFLAGS $LUA_LIBS"
+   CFLAGS="$CFLAGS $LUA_CFLAGS"
+   old_LIBS="$LIBS"
+   LIBS="$LIBS $LUA_LIBS"
 
    AC_CHECK_FUNCS([luaL_setfuncs])
    AC_CHECK_FUNCS([luaL_setmetatable])
@@ -45,5 +47,6 @@ AC_DEFUN([DOVECOT_WANT_LUA],[
    AC_CHECK_FUNCS([lua_tointegerx])
 
    CFLAGS="$old_CFLAGS"
+   LIBS="$old_LIBS"
   )
 ])