Update m4 from 1.4 to 1.4.4.

sysa/grep-2.4/mk/main.mk

@@ -8,7 +8,9 @@ AR      = tcc -ar
 CFLAGS  = -DPACKAGE=\"$(PACKAGE)\" \
           -DVERSION=\"$(VERSION)\" \
           -DHAVE_DIRENT_H=1 \
-          -DHAVE_UNISTD_H=1
+          -DHAVE_UNISTD_H=1 \
+          -DHAVE_STRERROR=1 \
+          -DREGEX_MALLOC=1
 
 .PHONY: all
 

sysa/m4-1.4.4/mk/main.mk

@@ -7,7 +7,9 @@ AR      = tcc -ar
 
 CFLAGS  = -I lib \
           -DPRODUCT=\"$(PRODUCT)\" \
-          -DVERSION=\"$(VERSION)\"
+          -DVERSION=\"$(VERSION)\" \
+          -DHAVE_SIGNAL_H=1 \
+          -DPACKAGE_STRING=\"GNU\ M4\ 1.4.4\"
 
 LDFLAGS = -L . -lm4
 

sysa/m4-1.4/patches/signal-include.patch

@@ -1,15 +0,0 @@
-sys/signal.h is not the POSIX appropriate place for signal.h, which mes libc
-attempts to conform to.
-
-diff -r -U3 src/m4.c src/m4.c
---- src/m4.c	1994-11-02 03:14:28.000000000 +0000
-+++ src/m4.c	2021-01-15 00:19:21.947654461 +0000
-@@ -19,7 +19,7 @@
- #include "m4.h"
- 
- #include <getopt.h>
--#include <sys/signal.h>
-+#include <signal.h>
- 
- static void usage _((int));
- 

sysa/run.sh

@@ -10,7 +10,7 @@ set -e
 export PREFIX=/after
 
 # Part 21
-build m4-1.4
+build m4-1.4.4
 
 # Part 22
 build flex-2.5.11