From: Vladimír Čunát <vladimir.cunat@nic.cz>
Date: Thu, 27 Feb 2020 10:24:00 +0000 (+0100)
Subject: make bad <lua.h> a hard informative error
X-Git-Tag: v5.1.0~34^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6e1aef5ce79394e393ef294b80a3e8e306818a65;p=thirdparty%2Fknot-resolver.git

make bad <lua.h> a hard informative error
---

diff --git a/daemon/bindings/impl.h b/daemon/bindings/impl.h
index 26b4dc80c..0297805d7 100644
--- a/daemon/bindings/impl.h
+++ b/daemon/bindings/impl.h
@@ -8,6 +8,13 @@
 
 #include <lua.h>
 #include <lauxlib.h>
+/* It may happen that include files are messed up and we're hitting a header
+ * e.g. from Lua 5.2 or 5.3.  Header from 5.1 should work OK, and it's more difficult
+ * to differentiate from a luajit one. */
+#if LUA_VERSION_NUM != 501
+	#error "Incorrect Lua version in #include <lua.h> - LuaJIT compatible with Lua 5.1 is required"
+#endif
+
 
 /** Useful to stringify #defines into error strings. */
 #define STR(s) STRINGIFY_TOKEN(s)