First check in

Makefile

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+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as 
+# published by the Free Software Foundation here:
+# (http://www.gnu.org/licenses/gpl-2.0.html)
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+DEPENDS = glibc
+ARCH = x86_64
+URL = http://mama.indstate.edu/users/ice/tree/
+DESC = Tree is a recursive directory listing command that produces a depth \
+indented listing of files
+SNAPVER = sr0
+
+ARCHIVE := $(PWD)/SRC/$(shell ls SRC|egrep '(bz2|gz|tar|xz)$$'|tail -1)
+TYPE := $(shell file -ib $(ARCHIVE)|cut -d';' -f1|tr -d '\n')
+SRCDIR := $(shell tar -tf $(ARCHIVE)|head -1|sed 's/\/.*//')
+PATCHDIR := $(PWD)/SRC/patches
+VERSION := $(shell echo $(SRCDIR)|egrep -o '\-[0-9].*'|sed 's/^-//')$(SNAPVER)
+
+include /usr/share/snap/Makefile.snaplinux
+
+$(SRCDIR)/Makefile: $(ARCHIVE)
+	@if [ '$(TYPE)' == 'application/x-bzip2' ]; then \
+		tar -jxf $(ARCHIVE); \
+	elif [ '$(TYPE)' == 'application/x-gzip' ]; then \
+		tar -zxf $(ARCHIVE); \
+	elif [ '$(TYPE)' == 'application/x-tar' ]; then \
+		tar -xf $(ARCHIVE); \
+	elif [ '$(TYPE)' == 'application/x-xz' ]; then \
+		tar -xf $(ARCHIVE); \
+	else \
+		echo 'Unable to determine archive type'; \
+		exit 1; \
+	fi
+	@touch $(SRCDIR)/Makefile
+
+$(SRCDIR)/tree: $(SRCDIR)/Makefile
+	@cd $(SRCDIR) && \
+	for patch in `find $(PATCHDIR) -name \*.patch|sort`; do \
+		patch --verbose -Np1 -i $$patch; \
+	done
+	@cd $(SRCDIR) && make
+
+$(ROOT): $(SRCDIR)/tree
+	@if [ -d $(ROOT) ]; then \
+		touch $(ROOT); \
+	else \
+		mkdir -v $(ROOT); \
+	fi
+
+	@cd $(SRCDIR) && \
+	make MANDIR=/usr/share/man/man1 install DESTDIR=$(ROOT)
+
+clean:
+	@rm -rvf $(ROOT) \
+		$(SNAPINFO) \
+		$(MANIFEST) \
+		$(FILES) \
+		$(SRCDIR)
+

SNAP/README

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+This is the directory where the manifest, snapinfo, and files.tar.gz
+files will be created. It is also where the usher file should be
+placed if it is required by the package.

SRC/patches/01_destdir.patch

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+diff -Naur a/Makefile b/Makefile
+--- a/Makefile	2014-04-18 17:35:39.000000000 +0000
++++ b/Makefile	2015-10-29 02:08:30.660000000 +0000
+@@ -95,12 +95,12 @@
+ 	rm -f *~
+ 
+ install: tree
+-	install -d $(BINDIR)
+-	install -d $(MANDIR)
++	install -d $(DESTDIR)$(BINDIR)
++	install -d $(DESTDIR)$(MANDIR)
+ 	if [ -e $(TREE_DEST) ]; then \
+-		install $(TREE_DEST) $(BINDIR)/$(TREE_DEST); \
++		install $(TREE_DEST) $(DESTDIR)$(BINDIR)/$(TREE_DEST); \
+ 	fi
+-	install doc/$(MAN) $(MANDIR)/$(MAN)
++	install doc/$(MAN) $(DESTDIR)$(MANDIR)/$(MAN)
+ 
+ distclean:
+ 	if [ -f tree.o ]; then rm *.o; fi

SRC/patches/README

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+Place any patch files here and preface each with a number indicating
+the order of execution. Patch files are expected to use a .patch extension.