From 6b2f03de6f7b533c31d52523d49ede2f627d5bba Mon Sep 17 00:00:00 2001
From: Tobias Wiese <tobias@tobiaswiese.com>
Date: Mon, 25 May 2020 03:01:06 +0200
Subject: Makefile: Add install and uninstall target

Adds a target for installation and uninstallation.
Also restructures the makefile a bit, to remove duplication.

Signed-off-by: Tobias Wiese <tobias@tobiaswiese.com>
---
 Makefile     | 13 +++++++++----
 src/Makefile | 20 +++++++++++++++-----
 2 files changed, 24 insertions(+), 9 deletions(-)

diff --git a/Makefile b/Makefile
index ec85e7e..b82db39 100644
--- a/Makefile
+++ b/Makefile
@@ -1,9 +1,14 @@
 SHELL   = /bin/sh
+prefix  = /usr/local
 
 .PHONY: all clean
+all clean:
+	@$(MAKE) -C src/ $@
 
-all:
-	@$(MAKE) -C src/
+.PHONY: distclean
+distclean: clean
 
-clean:
-	@$(MAKE) -C src/ $@
+.PHONY: install uninstall
+install uninstall:
+	$(eval dd := $(shell test -z "$(DESTDIR)" || realpath -m "$(DESTDIR)"))
+	@$(MAKE) -C src/ $@ DESTDIR=$(dd) prefix=$(prefix)
diff --git a/src/Makefile b/src/Makefile
index 972f55e..339522d 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1,8 +1,9 @@
-CC      := gcc
-CFLAGS  := -Wall
-LDFLAGS :=
+INSTALL = install
 
-CFLAGS  += -DVERSIN="\"$(shell git describe --dirty --always)\""
+VERSION = $(shell git describe --dirty --always)
+
+CFLAGS  += -Wall -DVERSION="\"$(VERSION)\""
+LDFLAGS +=
 
 TARGETS := exchange
 MAINS   := $(addsuffix .o, $(TARGETS))
@@ -13,7 +14,16 @@ all: $(TARGETS)
 
 .PHONY: clean
 clean:
-	rm -rf $(OBJ) $(TARGETS)
+	rm -f $(OBJ) $(TARGETS)
+
+.PHONY: install
+install: $(TARGETS)
+	$(INSTALL) -Dt "$(DESTDIR)$(prefix)/bin" $(TARGETS)
+
+.PHONY: uninstall
+uninstall:
+	cd $(DESTDIR)$(prefix)/bin && rm -f $(TARGETS)
+
 
 $(TARGETS): % : %.o
 	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^
-- 
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