Makefile: add install target

Makefile

@@ -1,5 +1,7 @@
 .POSIX:
 
+PREFIX = /usr/local
+DST = $(PREFIX)/bin
 PROJECT = slcl
 O = -Og
 CDEFS = -D_FILE_OFFSET_BITS=64 # Required for large file support on 32-bit.
@@ -23,6 +25,13 @@ OBJECTS = \
 
 all: $(PROJECT)
 
+install: all usergen
+	mkdir -p $(DST)
+	cp slcl usergen $(DST)
+	chmod 0755 $(DST)/slcl
+	chmod 0755 $(DST)/usergen
+	+cd doc && $(MAKE) PREFIX=$(PREFIX) install
+
 clean:
 	rm -f $(OBJECTS) $(DEPS)
 	+cd slweb && $(MAKE) clean

doc/Makefile

@@ -0,0 +1,8 @@
+.POSIX:
+
+PREFIX = /usr/local
+
+all:
+
+install: all
+	+cd man1 && $(MAKE) PREFIX=$(PREFIX) install

doc/man1/Makefile

@@ -0,0 +1,16 @@
+.POSIX:
+
+PREFIX = /usr/local
+DST = $(PREFIX)/share/man/man1
+OBJECTS = \
+	$(DST)/slcl.1 \
+	$(DST)/usergen.1
+
+all:
+
+install: $(OBJECTS)
+
+$(DST)/%.1: %.1
+	mkdir -p $(DST)
+	cp $< $@
+	chmod 0644 $@