From b6677f90864028e8faf8d531d801f5cd3d5ed487 Mon Sep 17 00:00:00 2001
From: Bobby Bingham <koorogi@koorogi.info>
Date: Sat, 12 Sep 2015 12:23:07 -0500
Subject: add make install rules

The install.sh script is taken from musl.
---
 Makefile         | 20 +++++++++++++++++-
 config.mak       |  5 +++++
 tools/install.sh | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 88 insertions(+), 1 deletion(-)
 create mode 100755 tools/install.sh

diff --git a/Makefile b/Makefile
index e4051c4..10bd278 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,8 @@
+prefix         = /usr/local
+exec_prefix    = $(prefix)
+bindir         = $(exec_prefix)/bin
+sharedir       = $(prefix)/share/saturn-tools
+
 CFLAGS         = -Os -pipe -std=c99 -D_POSIX_C_SOURCE=200809L
 LDFLAGS        =
 SATURN_CROSS   = saturn-
@@ -6,6 +11,8 @@ SATURN_OBJCOPY = $(SATURN_CROSS)objcopy
 SATURN_CFLAGS  = -Os -pipe -std=c99 -nostdlib
 SATURN_LDFLAGS =
 
+INSTALL        = ./tools/install.sh
+
 -include config.mak
 
 BOOTSRCS = $(sort $(wildcard boot/*.c))
@@ -17,10 +24,12 @@ DATA = $(sort $(wildcard src/*.bin))
 OBJS = $(SRCS:.c=.o) $(DATA:.bin=.o)
 BINS = bin/satmkboot bin/satmkiso
 
-.PHONY: all clean
+.PHONY: all clean install install-bins install-data
 
 all: $(BINS) $(BOOTBINS)
 
+install: install-bins install-data
+
 clean:
 	rm -f $(BINS) $(OBJS) $(BOOTBINS) $(BOOTELFS)
 
@@ -41,3 +50,12 @@ share/boot/%: boot/%.elf
 %.o: %.c
 	$(CC) $(CFLAGS) -c $< -o $@
 
+$(DESTDIR)$(bindir)/%: bin/%
+	$(INSTALL) -D $< $@
+
+$(DESTDIR)$(sharedir)/%: share/%
+	$(INSTALL) -D -m 644 $< $@
+
+install-bins: $(BINS:bin/%=$(DESTDIR)$(bindir)/%)
+
+install-data: $(BOOTBINS:share/%=$(DESTDIR)$(sharedir)/%)
diff --git a/config.mak b/config.mak
index 82b079b..a11891b 100644
--- a/config.mak
+++ b/config.mak
@@ -2,6 +2,11 @@
 # These values are the defaults used by the main makefile
 # if nothing is overridden here.
 
+#prefix         = /usr/local
+#exec_prefix    = $(prefix)
+#bindir         = $(exec_prefix)/bin
+#sharedir       = $(prefix)/share/saturn-tools
+
 #CFLAGS         = -Os -pipe -std=c99 -D_POSIX_C_SOURCE=200809L
 #LDFLAGS        =
 #SATURN_CROSS   = saturn-
diff --git a/tools/install.sh b/tools/install.sh
new file mode 100755
index 0000000..d913b60
--- /dev/null
+++ b/tools/install.sh
@@ -0,0 +1,64 @@
+#!/bin/sh
+#
+# This is an actually-safe install command which installs the new
+# file atomically in the new location, rather than overwriting
+# existing files.
+#
+
+usage() {
+printf "usage: %s [-D] [-l] [-m mode] src dest\n" "$0" 1>&2
+exit 1
+}
+
+mkdirp=
+symlink=
+mode=755
+
+while getopts Dlm: name ; do
+case "$name" in
+D) mkdirp=yes ;;
+l) symlink=yes ;;
+m) mode=$OPTARG ;;
+?) usage ;;
+esac
+done
+shift $(($OPTIND - 1))
+
+test "$#" -eq 2 || usage
+src=$1
+dst=$2
+tmp="$dst.tmp.$$"
+
+case "$dst" in
+*/) printf "%s: %s ends in /\n", "$0" "$dst" 1>&2 ; exit 1 ;;
+esac
+
+set -C
+set -e
+
+if test "$mkdirp" ; then
+umask 022
+case "$2" in
+*/*) mkdir -p "${dst%/*}" ;;
+esac
+fi
+
+trap 'rm -f "$tmp"' EXIT INT QUIT TERM HUP
+
+umask 077
+
+if test "$symlink" ; then
+ln -s "$1" "$tmp"
+else
+cat < "$1" > "$tmp"
+chmod "$mode" "$tmp"
+fi
+
+mv -f "$tmp" "$2"
+test -d "$2" && {
+rm -f "$2/$tmp"
+printf "%s: %s is a directory\n" "$0" "$dst" 1>&2
+exit 1
+}
+
+exit 0
-- 
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