Index: src/Makefile
--- src/Makefile.orig	2018-06-25 19:46:36.000000000 +0200
+++ src/Makefile	2018-07-10 20:46:53.276490000 +0200
@@ -7,7 +7,7 @@
 PLAT= none
 
 CC= gcc -std=gnu99
-CFLAGS= -O2 -Wall -Wextra -DLUA_COMPAT_5_2 $(SYSCFLAGS) $(MYCFLAGS)
+CFLAGS= -O2 -Wall -Wextra -DLUA_COMPAT_5_1 -DLUA_COMPAT_5_2 $(SYSCFLAGS) $(MYCFLAGS)
 LDFLAGS= $(SYSLDFLAGS) $(MYLDFLAGS)
 LIBS= -lm $(SYSLIBS) $(MYLIBS)
 
@@ -19,10 +19,10 @@
 SYSLDFLAGS=
 SYSLIBS=
 
-MYCFLAGS=
-MYLDFLAGS=
-MYLIBS=
-MYOBJS=
+MYCFLAGS?=
+MYLDFLAGS?=
+MYLIBS?=
+MYOBJS?=
 
 # == END OF USER SETTINGS -- NO NEED TO CHANGE ANYTHING BELOW THIS LINE =======
 
@@ -102,15 +102,15 @@
 
 
 freebsd:
-	$(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_LINUX -DLUA_USE_READLINE -I/usr/include/edit" SYSLIBS="-Wl,-E -ledit" CC="cc"
+	$(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_LINUX"
 
 generic: $(ALL)
 
 linux:
-	$(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_LINUX" SYSLIBS="-Wl,-E -ldl -lreadline"
+	$(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_LINUX"
 
 macosx:
-	$(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_MACOSX" SYSLIBS="-lreadline"
+	$(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_MACOSX"
 
 mingw:
 	$(MAKE) "LUA_A=lua53.dll" "LUA_T=lua.exe" \
Index: src/luaconf.h
--- src/luaconf.h.orig	2018-07-10 20:46:53.294694000 +0200
+++ src/luaconf.h	2018-07-10 20:47:41.904457000 +0200
@@ -61,14 +61,12 @@
 #if defined(LUA_USE_LINUX)
 #define LUA_USE_POSIX
 #define LUA_USE_DLOPEN		/* needs an extra library: -ldl */
-#define LUA_USE_READLINE	/* needs some extra libraries */
 #endif
 
 
 #if defined(LUA_USE_MACOSX)
 #define LUA_USE_POSIX
 #define LUA_USE_DLOPEN		/* MacOS does not need -ldl */
-#define LUA_USE_READLINE	/* needs an extra library: -lreadline */
 #endif