Build m4-1.4.

rootfs.sh

@@ -133,6 +133,9 @@ get_file https://ftp.gnu.org/gnu/make/make-3.80.tar.gz
 # bzip2 1.0.8
 get_file ftp://sourceware.org/pub/bzip2/bzip2-1.0.8.tar.gz
 
+# m4 1.4
+get_file https://ftp.gnu.org/gnu/m4/m4-1.4.tar.gz
+
 # General cleanup
 find tmp -name .git -exec rm -rf \;
 

sysa/after.kaem.run

@@ -96,3 +96,10 @@ cd ..
 cd bzip2-1.0.8
 kaem --file ../bzip2-1.0.8.kaem
 cd ..
+
+# Part 15: m4
+/after/bin/gunzip m4-1.4.tar.gz
+/after/bin/tar xf m4-1.4.tar
+cd m4-1.4
+kaem --file ../m4-1.4.kaem
+cd ..

sysa/m4-1.4.kaem

@@ -0,0 +1,14 @@
+#!/bin/sh
+
+set -ex
+
+/after/bin/patch -Np0 -i ../patches/m4-1.4/m4-signal-include.patch
+cp ../m4-1.4.mk Makefile
+/after/bin/make
+
+# Install
+/after/bin/cp m4 /after/bin/m4
+/after/bin/chmod 755 /after/bin/m4
+
+# Test
+/after/bin/m4 --version

sysa/m4-1.4.mk

@@ -0,0 +1,29 @@
+PRODUCT = m4
+VERSION = 1.4
+
+CC      = tcc
+LD      = tcc
+AR      = tcc -ar
+
+CFLAGS  = -I lib \
+          -DPRODUCT=\"$(PRODUCT)\" \
+          -DVERSION=\"$(VERSION)\"
+          -DHAVE_SIGCONTEXT=0
+
+LDFLAGS = -L . -lm4
+
+.PHONY: all
+
+LIB_SRC = regex getopt getopt1 error obstack xmalloc xstrdup
+LIB_OBJECTS = $(addprefix lib/, $(addsuffix .o, $(LIB_SRC)))
+
+M4_SRC = m4 builtin debug eval format freeze input macro output path symtab
+M4_OBJ = $(addprefix src/, $(addsuffix .o, $(M4_SRC)))
+
+all: m4
+
+m4: libm4.a $(M4_OBJ)
+	$(CC) $(CFLAGS) $^ $(LDFLAGS) -o $@
+
+libm4.a: $(LIB_OBJECTS)
+	$(AR) cr $@ $(LIB_OBJECTS)

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

@@ -0,0 +1,12 @@
+diff -r -U3 m4-1.4/src/m4.c m4-1.4-patched/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));
+