--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/tree/patch-Makefile.patch	Fri Jul 12 21:00:00 2019 +0200
@@ -0,0 +1,20 @@
+--- Makefile.orig	2019-07-12 16:45:19.739258636 +0200
++++ Makefile	2019-07-12 16:45:42.922958452 +0200
+@@ -16,7 +16,7 @@
+ # along with this program; if not, write to the Free Software
+ # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ 
+-prefix = /usr
++prefix = /
+ 
+ CC=gcc
+ 
+@@ -30,7 +30,7 @@
+ # Uncomment options below for your particular OS:
+ 
+ # Linux defaults:
+-CFLAGS=-ggdb -pedantic -Wall -DLINUX -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
++CFLAGS=-ggdb -pedantic -Wall -DLINUX -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 ${EXTRA_CFLAGS}
+ #CFLAGS=-O4 -Wall  -DLINUX -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
+ #LDFLAGS=-s
+ 

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/tree/tree.sh	Fri Jul 12 21:00:00 2019 +0200
@@ -0,0 +1,41 @@
+#!/bin/sh
+#
+# Copyright (c) 2019 FirstName LastName <mailaddress>
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+#
+
+PKGNAME=tree
+PKGVERSION=1.8.0
+PKGREVISION=1
+PKGLICENSE="GPLv2"
+PKGSUMMARY="a command line tool to list recursively directories"
+PKGDOWNLOAD="ftp://mama.indstate.edu/linux/$PKGNAME/$PKGNAME-$PKGVERSION.tgz"
+
+: ${CC:=clang}
+: ${CFLAGS:=-O2}
+: ${LDFLAGS:=}
+
+build()
+{
+	rm -rf $PKGNAME-$PKGVERSION
+	tar xvaf $PKGNAME-$PKGVERSION.tgz
+	cd $PKGNAME-$PKGVERSION
+
+	patch -p0 < ../patch-Makefile.patch
+	make CC="$CC" EXTRA_CFLAGS="$CFLAGS" LDFLAGS="$LDFLAGS"
+	make prefix=$DESTDIR MANDIR=$DESTDIR/share/man/man1 install
+
+	cd ..
+	rm -rf $PKGNAME-$PKGVERSION
+}