revert Lua patches

external/lua/Makefile

@@ -6,12 +6,12 @@
 # Your platform. See PLATS for possible values.
 PLAT= guess
 
-CC= cc -std=c99
-CFLAGS= -O2 -fpic -Wall -Wextra -DLUA_COMPAT_5_3 $(SYSCFLAGS) $(MYCFLAGS)
+CC= gcc -std=gnu99
+CFLAGS= -O2 -Wall -Wextra -DLUA_COMPAT_5_3 $(SYSCFLAGS) $(MYCFLAGS)
 LDFLAGS= $(SYSLDFLAGS) $(MYLDFLAGS)
 LIBS= -lm $(SYSLIBS) $(MYLIBS)
 
-AR= ar cr
+AR= ar rcu
 RANLIB= ranlib
 RM= rm -f
 UNAME= uname
@@ -30,10 +30,9 @@ CMCFLAGS=
 
 # == END OF USER SETTINGS -- NO NEED TO CHANGE ANYTHING BELOW THIS LINE =======
 
-PLATS= guess aix bsd c89 freebsd generic linux linux-readline macosx mingw posix solaris
+PLATS= guess aix bsd c89 freebsd generic ios linux linux-readline macosx mingw posix solaris
 
 LUA_A=	liblua.a
-LUA_SO=	liblua.so
 CORE_O=	lapi.o lcode.o lctype.o ldebug.o ldo.o ldump.o lfunc.o lgc.o llex.o lmem.o lobject.o lopcodes.o lparser.o lstate.o lstring.o ltable.o ltm.o lundump.o lvm.o lzio.o
 LIB_O=	lauxlib.o lbaselib.o lcorolib.o ldblib.o liolib.o lmathlib.o loadlib.o loslib.o lstrlib.o ltablib.o lutf8lib.o linit.o
 BASE_O= $(CORE_O) $(LIB_O) $(MYOBJS)
@@ -45,7 +44,7 @@ LUAC_T=	luac
 LUAC_O=	luac.o
 
 ALL_O= $(BASE_O) $(LUA_O) $(LUAC_O)
-ALL_T= $(LUA_A) $(LUA_T) $(LUAC_T) $(LUA_SO)
+ALL_T= $(LUA_A) $(LUA_T) $(LUAC_T)
 ALL_A= $(LUA_A)
 
 # Targets start here.
@@ -61,9 +60,6 @@ $(LUA_A): $(BASE_O)
 	$(AR) $@ $(BASE_O)
 	$(RANLIB) $@
 
-$(LUA_SO): $(CORE_O) $(LIB_O)
-	$(CC) -shared -Wl,-soname,$(LUA_SO) -o $@ $? -lm $(MYLDFLAGS)
-
 $(LUA_T): $(LUA_O) $(LUA_A)
 	$(CC) -o $@ $(LDFLAGS) $(LUA_O) $(LUA_A) $(LIBS)
 
@@ -121,13 +117,16 @@ FreeBSD NetBSD OpenBSD freebsd:
 
 generic: $(ALL)
 
+ios:
+	$(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_IOS"
+
 Linux linux:	linux-noreadline
 
 linux-noreadline:
-	$(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_LINUX" SYSLIBS="-Wl,-E"
+	$(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_LINUX" SYSLIBS="-Wl,-E -ldl"
 
 linux-readline:
-	$(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_LINUX -DLUA_USE_READLINE" SYSLIBS="-Wl,-E -lreadline"
+	$(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_LINUX -DLUA_USE_READLINE" SYSLIBS="-Wl,-E -ldl -lreadline"
 
 Darwin macos macosx:
 	$(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_MACOSX -DLUA_USE_READLINE" SYSLIBS="-lreadline"

external/lua/lmathlib.c

@@ -4,11 +4,6 @@
 ** See Copyright Notice in lua.h
 */
 
-/***
- * Math and algorithms.
- * @module math
- */
-
 #define lmathlib_c
 #define LUA_LIB
 
@@ -651,26 +646,6 @@ static void setrandfunc (lua_State *L) {
   luaL_setfuncs(L, randfuncs, 1);
 }
 
-/***
- * Linearly interpolates using the values given.
- *
- * Returns `x + (y - x) * z`
- *
- * @function lerp
- * @tparam number x
- * @tparam number y
- * @tparam number z
- */
-static int
-math_lerp(lua_State *L)
-{
-	double x; /* parameter 1 (number) */
-
-	x = luaL_checknumber(L, 1);
-	lua_pushnumber(L, x + (luaL_checknumber(L, 2) - x) * luaL_checknumber(L, 3));
-	return 1;
-}
-
 /* }================================================================== */
 
 
@@ -740,7 +715,6 @@ static const luaL_Reg mathlib[] = {
   {"floor", math_floor},
   {"fmod",   math_fmod},
   {"ult",   math_ult},
-  {"lerp",  math_lerp},
   {"log",   math_log},
   {"max",   math_max},
   {"min",   math_min},

external/lua/loslib.c

@@ -4,18 +4,6 @@
 ** See Copyright Notice in lua.h
 */
 
-/***
- * Operating system related facilities.
- * @module os
- */
-
-#ifdef __linux__
-#	include <bits/local_lim.h>
-#else
-/* assume OpenBSD/NetBSD */
-#	include <sys/syslimits.h>
-#endif
-
 #define loslib_c
 #define LUA_LIB
 
@@ -26,7 +14,6 @@
 #include <locale.h>
 #include <stdlib.h>
 #include <string.h>
-#include <unistd.h>
 #include <time.h>
 
 #include "lua.h"
@@ -414,30 +401,6 @@ static int os_exit (lua_State *L) {
   return 0;
 }
 
-#ifndef HOST_NAME_MAX
-#	define HOST_NAME_MAX 256 /* according to POSIX */
-#endif
-
-/***
- * Returns the system hostname.
- *
- * @function hostname
- * @usage local hostname = os.hostname()
- */
-static int
-os_hostname(lua_State *L)
-{
-	char *buffer;
-
-	buffer = malloc(HOST_NAME_MAX * sizeof(char *));
-
-	gethostname(buffer, HOST_NAME_MAX); /* get hostname */
-	lua_pushstring(L, buffer);
-	free(buffer);
-
-    return 1;
-}
-
 
 static const luaL_Reg syslib[] = {
   {"clock",     os_clock},
@@ -446,7 +409,6 @@ static const luaL_Reg syslib[] = {
   {"execute",   os_execute},
   {"exit",      os_exit},
   {"getenv",    os_getenv},
-  {"hostname",  os_hostname},
   {"remove",    os_remove},
   {"rename",    os_rename},
   {"setlocale", os_setlocale},