eris: require external definition of luai_writestring

luprex/eris-master/src/lua.c

@@ -83,7 +83,14 @@
 #endif
 
 
+void luai_writestring(const char *s, size_t len) {
+    fwrite((s), sizeof(char), (len), stdout);
+}
 
+void luai_writeline() {
+    fwrite("\n", sizeof(char), 1, stdout);
+    fflush(stdout);
+}
 
 static lua_State *globalL = NULL;
 

luprex/eris-master/src/luaconf.h

@@ -210,9 +210,8 @@
 ** avoids including 'stdio.h' everywhere.)
 */
 #if defined(LUA_LIB) || defined(lua_c)
-#include <stdio.h>
-#define luai_writestring(s,l)	fwrite((s), sizeof(char), (l), stdout)
-#define luai_writeline()	(luai_writestring("\n", 1), fflush(stdout))
+extern void luai_writestring(const char *s, size_t len);
+extern void luai_writeline();
 #endif
 
 /*