diff --git a/memtester.patches/memtester-50.patch b/memtester.patches/memtester-50.patch
new file mode 100644
index 0000000..aa14a36
--- /dev/null
+++ b/memtester.patches/memtester-50.patch
@@ -0,0 +1,35 @@
+diff -aruN a/Makefile b/Makefile
+--- a/Makefile	2010-10-03 12:56:13.000000000 -0700
++++ b/Makefile	2010-11-02 17:21:36.093700129 -0700
+@@ -7,11 +7,8 @@
+ # COPYING for details.
+ #
+ 
+-# You don't need to edit these; change the contents of the conf-cc and conf-ld
+-# files if you need to change the compile/link commands.  See the README for
+-# more information.
+-CC			= $(shell head -n 1 conf-cc)
+-LD			= $(shell head -n 1 conf-ld)
++compile		= $(CC) -O2 -DPOSIX -D_POSIX_C_SOURCE=200809L -D_FILE_OFFSET_BITS=64 -DTEST_NARROW_WRITES -c
++link		= $(CC) -o
+ 
+ SOURCES		= memtester.c tests.c
+ OBJECTS		= $(SOURCES:.c=.o)
+@@ -74,11 +71,11 @@
+ 	rm -f memtester $(TARGETS) $(OBJECTS) core
+ 
+ memtester: \
+-$(OBJECTS) memtester.c tests.h tests.c tests.h conf-cc Makefile load extra-libs
+-	./load memtester tests.o `cat extra-libs`
++$(OBJECTS) memtester.c tests.h tests.c tests.h Makefile
++	$(link) memtester memtester.o tests.o
+ 
+-memtester.o: memtester.c tests.h conf-cc Makefile compile
+-	./compile memtester.c
++memtester.o: memtester.c tests.h Makefile
++	$(compile) memtester.c
+ 
+-tests.o: tests.c tests.h conf-cc Makefile compile
+-	./compile tests.c
++tests.o: tests.c tests.h Makefile
++	$(compile) tests.c
diff --git a/memtester.patches/memtester-51.patch b/memtester.patches/memtester-51.patch
new file mode 100644
index 0000000..77e5bd7
--- /dev/null
+++ b/memtester.patches/memtester-51.patch
@@ -0,0 +1,13 @@
+diff -aruN a/Makefile b/Makefile
+--- a/Makefile	2012-09-10 15:51:24.061610646 -0700
++++ b/Makefile	2012-09-10 15:51:02.872463701 -0700
+@@ -22,7 +22,8 @@
+ all: memtester
+ 
+ install: all
+-	mkdir -m 755 -p $(INSTALLPATH)/{bin,man/man8}
++	mkdir -m 755 -p $(INSTALLPATH)/bin
++	mkdir -m 755 -p $(INSTALLPATH)/man/man8
+ 	install -m 755 memtester $(INSTALLPATH)/bin/
+ 	gzip -c memtester.8 >memtester.8.gz ; install -m 644 memtester.8.gz $(INSTALLPATH)/man/man8/
+ 
diff --git a/memtester.patches/memtester-52.patch b/memtester.patches/memtester-52.patch
new file mode 100644
index 0000000..fd54ba7
--- /dev/null
+++ b/memtester.patches/memtester-52.patch
@@ -0,0 +1,66 @@
+diff -aruN a/memtester.c b/memtester.c
+--- a/memtester.c	2017-04-13 12:13:53.101455795 -0700
++++ b/memtester.c	2017-04-13 12:21:38.423324655 -0700
+@@ -100,7 +100,9 @@
+ 
+ /* Function definitions */
+ void usage(char *me) {
+-    fprintf(stderr, "\nUsage: %s [-p physaddrbase] <mem>[B|K|M|G] [loops]\n", me);
++    fprintf(stderr, "\nUsage: %s [-e] [-p physaddrbase] <mem>[B|K|M|G] [loops]\n", me);
++    fprintf(stderr, "Arguments:\n");
++    fprintf(stderr, "  -e    Exit on error.\n");
+     exit(EXIT_FAIL_NONSTARTER);
+ }
+ 
+@@ -113,6 +115,7 @@
+     void volatile *buf, *aligned;
+     ulv *bufa, *bufb;
+     int do_mlock = 1, done_mem = 0;
++    int exit_on_err = 0;
+     int exit_code = 0;
+     int memfd, opt, memshift;
+     size_t maxbytes = -1; /* addressable memory, in bytes */
+@@ -127,7 +130,7 @@
+     pagesizemask = (ptrdiff_t) ~(pagesize - 1);
+     printf("pagesizemask is 0x%tx\n", pagesizemask);
+ 
+-    while ((opt = getopt(argc, argv, "p:")) != -1) {
++    while ((opt = getopt(argc, argv, "ep:")) != -1) {
+         switch (opt) {
+             case 'p':
+                 errno = 0;
+@@ -154,6 +157,9 @@
+                 /* okay, got address */
+                 use_phys = 1;
+                 break;
++            case 'e':
++                exit_on_err = 1;
++                break;
+             default: /* '?' */
+                 usage(argv[0]); /* doesn't return */
+         }
+@@ -322,6 +328,7 @@
+         if (!test_stuck_address(aligned, bufsize / sizeof(ul))) {
+              printf("ok\n");
+         } else {
++            printf("fail\n");
+             exit_code |= EXIT_FAIL_ADDRESSLINES;
+         }
+         for (i=0;;i++) {
+@@ -330,12 +337,16 @@
+             if (!tests[i].fp(bufa, bufb, count)) {
+                 printf("ok\n");
+             } else {
++                printf("fail\n");
+                 exit_code |= EXIT_FAIL_OTHERTEST;
+             }
+             fflush(stdout);
+         }
+         printf("\n");
+         fflush(stdout);
++        if (exit_on_err && (exit_code != 0)) {
++            break;
++        }
+     }
+     if (do_mlock) munlock((void *) aligned, bufsize);
+     printf("Done.\n");
diff --git a/memtester.tar.gz b/memtester.tar.gz
new file mode 100644
index 0000000..ca21e55
--- /dev/null
+++ b/memtester.tar.gz
Binary files differ
diff --git a/memtester.url b/memtester.url
new file mode 100644
index 0000000..333eb54
--- /dev/null
+++ b/memtester.url
@@ -0,0 +1 @@
+http://pyropus.ca/software/memtester/old-versions/memtester-4.2.1.tar.gz
diff --git a/memtester.version b/memtester.version
new file mode 100644
index 0000000..fae6e3d
--- /dev/null
+++ b/memtester.version
@@ -0,0 +1 @@
+4.2.1