simplify Makefile

Due to consideration of POSIX compliance issues config.mk had
to be removed. Configuration variables can be overridden by
environment variables or specified via command line.

Additionally all pretty-printed messages were removed and
built-in rules are used. This also simplifies and purges
the Makefile.

1 files changed, 32 insertions, 51 deletions

diff --git a/Makefile b/Makefile
index 72154e9..0f74456 100644
--- a/Makefile
+++ b/Makefile
@@ -1,64 +1,45 @@
 # st - simple terminal
 # See LICENSE file for copyright and license details.
 
-include config.mk
+VERSION = 0.0
 
-SRC = st.c std.c pty.c
-OBJ = ${SRC:.c=.o}
+PREFIX = /usr/local
+MANDIR = $(PREFIX)/share/man
 
-all: options st std
+CFLAGS = -DVERSION=\"0.0\" -D_GNU_SOURCE
 
-options:
-        @echo st build options:
-        @echo "CFLAGS     = ${CFLAGS}"
-        @echo "LDFLAGS    = ${LDFLAGS}"
-        @echo "X11LDFLAGS = ${X11LDFLAGS}"
-        @echo "CC         = ${CC}"
-
-.c.o:
-        @echo CC $<
-        @${CC} -c ${CFLAGS} $<
-
-${OBJ}: config.mk
-
-st: st.o
-        @echo CC -o $@
-        @${CC} -o $@ $^ ${LDFLAGS} ${X11LDFLAGS}
-
-std: std.o pty.o
-        @echo CC -o $@
-        @${CC} -o $@ $^ ${LDFLAGS}
+all: st std
 
 clean:
-        @echo cleaning
-        @rm -f st std ${OBJ} st-${VERSION}.tar.gz
+        rm -f st std
+        rm -f st.o std.o
+        rm -f st-$(VERSION).tar.gz
 
 dist: clean
-        @echo creating dist tarball
-        @mkdir -p st-${VERSION}
-        @cp -R LICENSE Makefile README config.mk \
-                st.1 ${SRC} st-${VERSION}
-        @tar -cf st-${VERSION}.tar st-${VERSION}
-        @gzip st-${VERSION}.tar
-        @rm -rf st-${VERSION}
-
-install: all
-        @echo installing executable file to ${DESTDIR}${PREFIX}/bin
-        @mkdir -p ${DESTDIR}${PREFIX}/bin
-        @cp -f st ${DESTDIR}${PREFIX}/bin
-        @cp -f std ${DESTDIR}${PREFIX}/bin
-        @chmod 755 ${DESTDIR}${PREFIX}/bin/st
-        @echo installing manual page to ${DESTDIR}${MANPREFIX}/man1
-        @mkdir -p ${DESTDIR}${MANPREFIX}/man1
-        @sed "s/VERSION/${VERSION}/g" < st.1 > ${DESTDIR}${MANPREFIX}/man1/st.1
-        @chmod 644 ${DESTDIR}${MANPREFIX}/man1/st.1
-        @sed "s/VERSION/${VERSION}/g" < std.1 > ${DESTDIR}${MANPREFIX}/man1/std.1
-        @chmod 644 ${DESTDIR}${MANPREFIX}/man1/std.1
+        mkdir st-$(VERSION)
+        cp -f LICENSE README st-$(VERSION)
+        cp -f Makefile config.mk st-$(VERSION)
+        cp -f st.1 std.1 st-$(VERSION)
+        cp -f st.c std.c st-$(VERSION)
+        tar -czf st-$(VERSION).tar st-$(VERSION)
+        rm -rf st-$(VERSION)
+
+install:
+        mkdir -p $(DESTDIR)$(PREFIX)/bin
+        cp -f st $(DESTDIR)$(PREFIX)/bin
+        cp -f std $(DESTDIR)$(PREFIX)/bin
+        chmod 755 $(DESTDIR)$(PREFIX)/bin/st
+        chmod 755 $(DESTDIR)$(PREFIX)/bin/std
+        mkdir -p $(DESTDIR)$(MANDIR)/man1
+        sed 's/VERSION/$(VERSION)/g' < st.1 > $(DESTDIR)$(MANDIR)/man1/st.1
+        chmod 644 $(DESTDIR)$(MANDIR)/man1/st.1
+        sed 's/VERSION/$(VERSION)/g' < std.1 > $(DESTDIR)$(MANDIR)/man1/std.1
+        chmod 644 $(DESTDIR)$(MANDIR)/man1/std.1
 
 uninstall:
-        @echo removing executable file from ${DESTDIR}${PREFIX}/bin
-        @rm -f ${DESTDIR}${PREFIX}/bin/st
-        @echo removing manual page from ${DESTDIR}${MANPREFIX}/man1
-        @rm -f ${DESTDIR}${MANPREFIX}/man1/st.1
+        rm -f $(DESTDIR)$(PREFIX)/bin/st
+        rm -f $(DESTDIR)$(PREFIX)/bin/std
+        rm -f $(DESTDIR)$(MANDIR)/man1/st.1
+        rm -f $(DESTDIR)$(MANDIR)/man1/std.1
 
-.PHONY: all options clean dist install uninstall
+.PHONY: all clean dist install uninstall