diff --git a/rootfs.sh b/rootfs.sh
index f713312..259f0c1 100755
--- a/rootfs.sh
+++ b/rootfs.sh
@@ -121,6 +121,9 @@ get_file https://ftp.gnu.org/pub/gnu/patch/patch-2.5.9.tar.gz
 # patched tcc
 cp tcc-patched.kaem tmp/after/
 
+# make 3.80
+get_file https://ftp.gnu.org/gnu/make/make-3.80.tar.gz
+
 # General cleanup
 find tmp -name .git -exec rm -rf \;
 
diff --git a/sysa/after.kaem.run b/sysa/after.kaem.run
index 80ef39f..fb83a2a 100755
--- a/sysa/after.kaem.run
+++ b/sysa/after.kaem.run
@@ -82,3 +82,10 @@ cd ..
 cd tcc-0.9.27
 kaem --file ../tcc-patched.kaem
 cd ..
+
+# Part 13: make
+/after/bin/gunzip make-3.80.tar.gz
+/after/bin/tar xf make-3.80.tar
+cd make-3.80
+kaem --file ../make-3.80.kaem
+cd ..
diff --git a/sysa/make-3.80.kaem b/sysa/make-3.80.kaem
new file mode 100755
index 0000000..6824843
--- /dev/null
+++ b/sysa/make-3.80.kaem
@@ -0,0 +1,46 @@
+#!/bin/sh
+
+set -ex
+
+# Variables
+bindir=/after/bin
+
+catm config.h
+catm /after/include/mes/config.h
+
+# Patch
+patch -Np0 -i ../patches/make-3.80/mes-libc.patch
+
+# Compile
+tcc -c getopt.c
+tcc -c getopt1.c
+tcc -c -I. -Iglob -DHAVE_INTTYPES_H -DHAVE_SA_RESTART -DHAVE_STDINT_H ar.c
+tcc -c -I. -DHAVE_INTTYPES_H -DHAVE_SA_RESTART -DHAVE_FCNTL_H arscan.c
+tcc -c -I. -DHAVE_INTTYPES_H -DHAVE_SA_RESTART -DFILE_TIMESTAMP_HI_RES=0 commands.c
+tcc -c -I. -DHAVE_INTTYPES_H -DHAVE_SA_RESTART -DSCCS_GET=\"/nullop\" default.c
+tcc -c -I. -Iglob -DHAVE_INTTYPES_H -DHAVE_SA_RESTART -DHAVE_DIRENT_H dir.c
+tcc -c -I. -DHAVE_INTTYPES_H -DHAVE_SA_RESTART expand.c
+tcc -c -I. -DHAVE_INTTYPES_H -DHAVE_SA_RESTART -DFILE_TIMESTAMP_HI_RES=0 file.c
+tcc -c -I. -DHAVE_INTTYPES_H -DHAVE_SA_RESTART -Dvfork=fork function.c
+tcc -c -I. -DHAVE_INTTYPES_H -DHAVE_SA_RESTART implicit.c
+tcc -c -I. -DHAVE_INTTYPES_H -DHAVE_SA_RESTART -DHAVE_DUP2 -Dvfork=fork job.c
+tcc -c -I. -DHAVE_INTTYPES_H -DHAVE_SA_RESTART -DLOCALEDIR=\"/fake-locale\" -DPACKAGE=\"fake-make\" -DHAVE_MKTEMP -DHAVE_GETCWD main.c
+tcc -c -I. -DHAVE_INTTYPES_H -DHAVE_SA_RESTART -DHAVE_STRERROR -DHAVE_VPRINTF misc.c
+tcc -c -I. -Iglob -DHAVE_INTTYPES_H -DHAVE_SA_RESTART -DINCLUDEDIR=\"/after/include\" read.c
+tcc -c -I. -DHAVE_INTTYPES_H -DHAVE_SA_RESTART -DFILE_TIMESTAMP_HI_RES=0 -DHAVE_FCNTL_H -DLIBDIR=\"/after/lib\" remake.c
+tcc -c -I. -DHAVE_INTTYPES_H -DHAVE_SA_RESTART rule.c
+tcc -c -I. -DHAVE_INTTYPES_H -DHAVE_SA_RESTART signame.c
+tcc -c -I. -DHAVE_INTTYPES_H -DHAVE_SA_RESTART variable.c
+tcc -c -I. -DVERSION=\"3.80\" version.c
+tcc -c -I. -DHAVE_INTTYPES_H -DHAVE_SA_RESTART vpath.c
+tcc -c -I. -DHAVE_INTTYPES_H -DHAVE_SA_RESTART hash.c
+tcc -c -I. -DHAVE_INTTYPES_H -DHAVE_SA_RESTART remote-stub.c
+tcc -c -DHAVE_FCNTL_H getloadavg.c
+tcc -c -Iglob -DSTDC_HEADERS glob/fnmatch.c
+tcc -c -Iglob -DHAVE_STRDUP -DHAVE_DIRENT_H glob/glob.c
+
+# Link
+tcc -o ${bindir}/make getopt.o getopt1.o ar.o arscan.o commands.o default.o dir.o expand.o file.o function.o implicit.o job.o main.o misc.o read.o remake.o rule.o signame.o variable.o version.o vpath.o remake.o rule.o signame.o variable.o version.o vpath.o hash.o remote-stub.o getloadavg.o fnmatch.o glob.o
+
+# Test
+make --version
diff --git a/sysa/patches/make-3.80/mes-libc.patch b/sysa/patches/make-3.80/mes-libc.patch
new file mode 100644
index 0000000..1278892
--- /dev/null
+++ b/sysa/patches/make-3.80/mes-libc.patch
@@ -0,0 +1,25 @@
+diff --color -ru make-3.80.bak/job.c make-3.80/job.c
+--- job.c	2021-01-14 10:26:42.457657979 +1100
++++ job.c	2021-01-14 10:27:03.332776801 +1100
+@@ -28,8 +28,6 @@
+ #include "variable.h"
+ #include "debug.h"
+ 
+-#include <string.h>
+-
+ /* Default shell to use.  */
+ #ifdef WINDOWS32
+ char *default_shell = "sh.exe";
+diff --color -ru make-3.80.bak/make.h make-3.80/make.h
+--- make.h	2021-01-14 10:26:42.456657974 +1100
++++ make.h	2021-01-14 10:26:51.154707480 +1100
+@@ -467,9 +467,6 @@
+ #if !defined (__GNU_LIBRARY__) && !defined (POSIX) && !defined (_POSIX_VERSION) && !defined(WINDOWS32)
+ 
+ extern long int atol ();
+-# ifndef VMS
+-extern long int lseek ();
+-# endif
+ 
+ #endif  /* Not GNU C library or POSIX.  */
+