lua: drop the lua5.4 LUA_ROOT patch

luaconf.h builds the module search paths out of LUA_ROOT, which upstream
hardcodes to /usr/local, where nothing installs on OpenWrt. LUA_ROOT is
defined unconditionally, but the two macros it feeds, LUA_PATH_DEFAULT
and LUA_CPATH_DEFAULT, are both guarded with #if !defined and are the
only users of it, so set them in TARGET_CFLAGS and drop the patch.

The resulting paths are the ones the patch produced, so the interpreter
behaves exactly as before.

Signed-off-by: Alexandru Ardelean <alex@shruggie.ro>

lang/lua/lua5.4/Makefile

@@ -84,7 +84,12 @@ define Build/Prepare
 	mv $(PKG_BUILD_DIR)/doc/luac.1 $(PKG_BUILD_DIR)/doc/luac5.4.1
 endef
 
-TARGET_CFLAGS += -DLUA_USE_LINUX $(FPIC) -std=gnu99
+LUA_LMOD_DIR:=/usr/share/lua/5.4
+LUA_CMOD_DIR:=/usr/lib/lua/5.4
+
+TARGET_CFLAGS += -DLUA_USE_LINUX $(FPIC) -std=gnu99 \
+	-DLUA_PATH_DEFAULT='\"$(LUA_LMOD_DIR)/?.lua;$(LUA_LMOD_DIR)/?/init.lua;$(LUA_CMOD_DIR)/?.lua;$(LUA_CMOD_DIR)/?/init.lua;./?.lua;./?/init.lua\"' \
+	-DLUA_CPATH_DEFAULT='\"$(LUA_CMOD_DIR)/?.so;$(LUA_CMOD_DIR)/loadall.so;./?.so\"'
 
 define Build/Compile
 	$(MAKE) $(PKG_JOBS) -C $(PKG_BUILD_DIR) \

lang/lua/lua5.4/patches/200-lua-path.patch

@@ -1,25 +0,0 @@
-From dd82c673231224361dc9ec3cd2861418fd4ce731 Mon Sep 17 00:00:00 2001
-From: Alexandru Ardelean <alex@shruggie.ro>
-Date: Wed, 22 Jul 2026 14:52:14 +0300
-Subject: [PATCH] lua5.4: point LUA_ROOT at /usr for OpenWrt module paths
-
-luaconf.h hardcodes LUA_ROOT to /usr/local/, where nothing installs on
-OpenWrt; point it at /usr/ so modules under /usr/{share,lib}/lua/5.4/
-are found.
-
-Signed-off-by: Alexandru Ardelean <alex@shruggie.ro>
----
- src/luaconf.h | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
---- a/src/luaconf.h
-+++ b/src/luaconf.h
-@@ -223,7 +223,7 @@
- 
- #else			/* }{ */
- 
--#define LUA_ROOT	"/usr/local/"
-+#define LUA_ROOT	"/usr/"
- #define LUA_LDIR	LUA_ROOT "share/lua/" LUA_VDIR "/"
- #define LUA_CDIR	LUA_ROOT "lib/lua/" LUA_VDIR "/"
-