Make gzip-1.2.4 and tar-1.12 not include timestamps

There is no way for gzip 1.2.4 and tar 1.12 to disable the inclusion of
timestamps into the tarball/gzip, which creates non-reproducible
tarballs and hence packages.

While it is theoretically possible to set the timestamps to unix time 0
using touch, in reality this is not possible because mes libc does not
support utime() which sets the timestamp of a file from userspace. So we
need to ignore it rather than (re)set it.

sysa/gzip-1.2.4/checksums

@@ -1 +1 @@
-304cead634e6766db915155d422049269f66b2ff34a20a7f20819a0c69193d33  /usr/bin/gzip
+062e34d3f2d4bcb339ce3be80a1b6bc0ff805d70c8c13d9a6ad6e7a93914a1bf  /usr/bin/gzip

sysa/gzip-1.2.4/files/stat_override.c

@@ -0,0 +1,30 @@
+/*
+ * SPDX-FileCopyrightText: 2022 fosslinux <fosslinux@aussies.space>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include <sys/stat.h>
+#include <linux/syscall.h>
+#include <linux/x86/syscall.h>
+
+int _stat(const char *path, struct stat *buf) {
+	int rc = stat(path, buf);
+	if (rc == 0) {
+		buf->st_atime = 0;
+		buf->st_mtime = 0;
+	}
+	return rc;
+}
+
+int _lstat(const char *path, struct stat *buf) {
+	int rc = lstat(path, buf);
+	if (rc == 0) {
+		buf->st_atime = 0;
+		buf->st_mtime = 0;
+	}
+	return rc;
+}
+
+#define stat(a,b) _stat(a,b)
+#define lstat(a,b) _lstat(a,b)

sysa/gzip-1.2.4/gzip-1.2.4.kaem

@@ -11,11 +11,18 @@ set -ex
 mkdir build
 cd build
 
+catm gzip.c.new ../../files/stat_override.c gzip.c
+cp gzip.c.new gzip.c
+
 # Extract
 ungz ../src/${pkg}.tar.gz
 untar ../src/${pkg}.tar
 cd ${pkg}
 
+# Prepare
+catm gzip.c.new ../../files/stat_override.c gzip.c
+cp gzip.c.new gzip.c
+
 # Compile
 tcc -c -DNO_UTIME gzip.c
 tcc -c bits.c

sysa/tar-1.12/checksums

@@ -1 +1 @@
-d4ac49a136cb18e47fa4be447657746b3620d6e5bc15daa0b825f44734945a7c  /usr/bin/tar
+3d67caa46470a7c1f3b00b8301977bc1093fab333943aabfd84afaa1bd77a609  /usr/bin/tar

sysa/tar-1.12/files/stat_override.c

@@ -0,0 +1,30 @@
+/*
+ * SPDX-FileCopyrightText: 2022 fosslinux <fosslinux@aussies.space>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include <sys/stat.h>
+#include <linux/syscall.h>
+#include <linux/x86/syscall.h>
+
+int _stat(const char *path, struct stat *buf) {
+	int rc = stat(path, buf);
+	if (rc == 0) {
+		buf->st_atime = 0;
+		buf->st_mtime = 0;
+	}
+	return rc;
+}
+
+int _lstat(const char *path, struct stat *buf) {
+	int rc = lstat(path, buf);
+	if (rc == 0) {
+		buf->st_atime = 0;
+		buf->st_mtime = 0;
+	}
+	return rc;
+}
+
+#define stat(a,b) _stat(a,b)
+#define lstat(a,b) _lstat(a,b)

sysa/tar-1.12/tar-1.12.kaem

@@ -18,6 +18,8 @@ untar ../src/${pkg}.tar
 cd ${pkg}
 
 cp ../../files/getdate_stub.c lib/getdate_stub.c
+catm src/create.c.new ../../files/stat_override.c src/create.c
+cp src/create.c.new src/create.c
 
 # Compile