--- Libc/Libc-1272.200.26/xcodescripts/generate_features.pl
+++ Libc/Libc-825.26/xcodescripts/generate_features.pl
@@ -1,4 +1,8 @@
 #!/usr/bin/perl
+
+if ($ENV{"ACTION"} eq "installhdrs") {
+	exit 0;
+}
 
 # Generates the libc-features.h files used to control #ifdef behaviour in Libc
 use warnings;
@@ -19,9 +23,9 @@
 {
 	# set ENV{"CURRENT_ARCH"} so we can predicate on it
 	$ENV{"CURRENT_ARCH"} = $arch;
-
-	my $platformName = $ENV{"VARIANT_PLATFORM_NAME"};
-	$platformName =~ s/simulator/os/;
+	
+	my $platformName = $ENV{"PLATFORM_NAME"};
+	$platformName = "iphoneos" if ($platformName eq "iphonesimulator");
 
 	my $platformPath = $ENV{"SRCROOT"} . "/Platforms/" . $platformName . "/Makefile.inc";
 	my $featuresHeaderDir = $ENV{"DERIVED_FILES_DIR"}."/".$arch;
@@ -47,7 +51,7 @@
 			my $regex = $2;
 			
 			$nested++;
-			if (!defined($ENV{$envvar}) || ($ENV{$envvar} !~ /$regex/)) {
+			if ($ENV{$envvar} !~ /$regex/) {
 				$skip += 1;
 			}
 		}
@@ -79,6 +83,7 @@
 		$unifdefs{"UNIFDEF_LEGACY_64_APIS"} = defined($features{"FEATURE_LEGACY_64_APIS"});
 		$unifdefs{"UNIFDEF_LEGACY_RUNE_APIS"} = defined($features{"FEATURE_LEGACY_RUNE_APIS"});
 		$unifdefs{"UNIFDEF_LEGACY_UTMP_APIS"} = defined($features{"FEATURE_LEGACY_UTMP_APIS"});
+		$unifdefs{"UNIFDEF_MOVE_LOCALTIME"} = defined($features{"FEATURE_MOVE_LOCALTIME"});
 		
 		my $output = "";
 		for my $d (keys %unifdefs) {
@@ -95,7 +100,7 @@
 		my $platform_mtime = (stat($platformPath))[9];
 		my $header_mtime = (stat($featuresHeader))[9];
 
-		if (defined($header_mtime) && defined($platform_mtime) && ($header_mtime > $platform_mtime)) {
+		if ($header_mtime > $platform_mtime) {
 			exit 0;
 		}
 
@@ -118,9 +123,6 @@
 		my $shortarch = $arch;
 		$shortarch =~ s/armv\d+[a-z]?/arm/g;
 
-		# map all arm64 subtypes to arm64
-		$shortarch =~ s/arm64[_a-z0-9]*/arm64/g;
-
 		printf HEADER "#if !defined(__".$shortarch."__)\n";
 		printf HEADER "#error Mismatched libc-features.h architecture\n";
 		printf HEADER "#endif\n\n";
@@ -141,6 +143,12 @@
 			printf HEADER "#define UNIFDEF_LEGACY_UTMP_APIS 1\n";
 		} else {
 			printf HEADER "/* #undef UNIFDEF_LEGACY_UTMP_APIS */\n";
+		}
+
+		if (defined($features{"FEATURE_MOVE_LOCALTIME"})) {
+			printf HEADER "#define UNIFDEF_MOVE_LOCALTIME 1\n";
+		} else {
+			printf HEADER "/* #undef UNIFDEF_MOVE_LOCALTIME */\n";
 		}
 
 		if (defined($features{"FEATURE_ONLY_1050_VARIANTS"})) {
@@ -179,6 +187,12 @@
 			printf HEADER "/* #undef __APPLE_PR3417676_HACK__ */\n";
 		}
 
+		if (defined($features{"FEATURE_PATCH_5243343"})) {
+			printf HEADER "#define PR_5243343 1\n";
+		} else {
+			printf HEADER "/* #undef PR_5243343 */\n";
+		}
+
 		if (defined($features{"FEATURE_PLOCKSTAT"})) {
 			printf HEADER "#define PLOCKSTAT 1\n";
 		} else {
@@ -191,22 +205,16 @@
 			printf HEADER "/* #undef NOTIFY_TZ */\n";
 		}
 
-		if (defined($features{"FEATURE_SMALL_STDIOBUF"})) {
-			printf HEADER "#define FEATURE_SMALL_STDIOBUF 1\n";
-		} else {
-			printf HEADER "/* #undef FEATURE_SMALL_STDIOBUF */\n";
-		}
-
-		if (defined($features{"FEATURE_XPRINTF_PERF"})) {
-			printf HEADER "#define XPRINTF_PERF 1\n";
-		} else {
-			printf HEADER "/* #undef XPRINTF_PERF */\n";
-		}
-
-		if (defined($features{"FEATURE_SIGNAL_RESTRICTION"})) {
-			printf HEADER "#define FEATURE_SIGNAL_RESTRICTION 1\n";
-		} else {
-			printf HEADER "/* #undef FEATURE_SIGNAL_RESTRICTION */\n";
+		if (defined($features{"FEATURE_NO_LIBCRASHREPORTERCLIENT"})) {
+			printf HEADER "#define LIBC_NO_LIBCRASHREPORTERCLIENT 1\n";
+		} else {
+			printf HEADER "/* #undef LIBC_NO_LIBCRASHREPORTERCLIENT */\n";
+		}
+
+		if (defined($features{"FEATURE_MEMORYSTATUS"})) {
+			printf HEADER "#define CONFIG_MEMORYSTATUS 1\n";
+		} else {
+			printf HEADER "/* #undef CONFIG_MEMORYSTATUS */\n";
 		}
 
 		printf HEADER "#endif // _LIBC_FEATURES_H_\n";