Makefile: Refactor the silent-rules machinery.

[preload-hacks] / Makefile

### -*-makefile-*-
###
### Makefile for preload-hacks
###
### (c) 2008 Straylight/Edgeware
###

###----- Licensing notice ---------------------------------------------------
###
### This file is part of the preload-hacks package.
###
### Preload-hacks are free software; you can redistribute it and/or modify
### them under the terms of the GNU General Public License as published by
### the Free Software Foundation; either version 2 of the License, or (at
### your option) any later version.
###
### Preload-hacks are 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.
###
### You should have received a copy of the GNU General Public License along
### with preload-hacks; if not, write to the Free Software Foundation, Inc.,
### 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

PACKAGE			 = preload-hacks
VERSION			:= $(shell ./auto-version)

.SECONDEXPANSION: #sorry

###--------------------------------------------------------------------------
### Configuration.

## Where to install things.
prefix			 = /usr/local
exec_prefix		 = ${prefix}
bindir			 = ${exec_prefix}/bin
libdir			 = ${exec_prefix}/lib
datadir			 = ${prefix}/share
mandir			 = ${datadir}/man
man1dir			 = ${mandir}/man1

## Private installation tree for packagers.
DESTDIR			 =

###--------------------------------------------------------------------------
### Quiet building.

## Verbosity.
V			?= 0
v_tag			 = $(call v_tag_$V,$1)
v_tag_0			 = @printf "  %-8s %s\n" "$1" "$@";
V_AT			 = $(V_AT_$V)
V_AT_0			 = @

###--------------------------------------------------------------------------
### Build parameters.

## Mess with these if you like.
CC			 = gcc
LD			 = gcc
CFLAGS			 = -O2 -g -Wall
LDFLAGS			 =
LDLIBS			 = -ldl
INSTALL			 = install
INST_BIN		 = $(INSTALL) -c -m755
INST_LIB		 = $(INSTALL) -c -m644
INST_MAN		 = $(INSTALL) -c -m644
INST_BIN		 = $(INSTALL) -c -m755
MKDIRS			 = $(INSTALL) -d -m755

## Probably best if you leave these alone.
REAL_CFLAGS		 = $(CFLAGS) -fPIC -MD
REAL_LDFLAGS		 = $(LDFLAGS) -shared

###--------------------------------------------------------------------------
### Main targets.

## noip
HACKS			+= noip
noip_SOURCES		 = noip.c

## uopen
HACKS			+= uopen
uopen_SOURCES		 = uopen.c

## Sources.
ALL_SOURCES		 = $(foreach h,$(HACKS),$($h_SOURCES))
DISTFILES		+= $(ALL_SOURCES)

## Libraries.
LIBS			+= $(addsuffix .so, $(HACKS))
TARGETS			+= $(LIBS)

## Scripts.
SCRIPTS			 = $(HACKS)
TARGETS			+= $(SCRIPTS)
DISTFILES		+= withlib.in

## Manual pages.
MAN1			+= $(addsuffix .1, $(HACKS))
DISTFILES		+= $(MAN1)

###--------------------------------------------------------------------------
### Distribution arrangements.

## Names.
distdir			 = $(PACKAGE)-$(VERSION)
DISTTAR			 = $(distdir).tar.gz

## Distribute the build utilities.
DISTFILES		+= Makefile
DISTFILES		+= auto-version

## Documentation.
DISTFILES		+= README

## Licensing.
DISTFILES		+= COPYING

## Debian.
debpkg			 = noip uopen
DISTFILES		+= debian/changelog debian/copyright
DISTFILES		+= debian/control debian/rules debian/compat
DISTFILES		+= debian/source/format
DISTFILES		+= $(patsubst %, debian/%.install, $(debpkg))
DISTFILES		+= $(patsubst %, debian/%.lintian-overrides, \
				$(debpkg))

###--------------------------------------------------------------------------
### Building.

all:: $(TARGETS)
.PHONY: ALL

CLEAN			+= $(TARGETS)
CLEAN			+= *.o *.d
clean::
	rm -f $(CLEAN)
.PHONY: clean

## Building sources.
%.o: %.c
	$(call v_tag,CC)$(CC) -c $(REAL_CFLAGS) $< -o $@

## Constructing preload hacks.
$(addsuffix .so,$(HACKS)): %.so: $$(patsubst %.c,%.o,$$($$*_SOURCES))
	$(call v_tag,LD)$(LD) $(REAL_LDFLAGS) $< $(LDLIBS) -o $@

## Constructing the scripts.
$(SCRIPTS): %: withlib.in
	$(call v_tag,GEN)sed "s/@lib@/$@/" withlib.in >$@.new && \
		chmod +x $@.new && mv $@.new $@

-include $(patsubst %.c,%d,$(ALL_SOURCES))

###--------------------------------------------------------------------------
### Installation.

install: all
	$(MKDIRS) $(DESTDIR)$(bindir)
	$(INST_BIN) $(SCRIPTS) $(DESTDIR)$(bindir)
	$(MKDIRS) $(DESTDIR)$(libdir)
	$(INST_BIN) $(LIBS) $(DESTDIR)$(libdir)
	$(MKDIRS) $(DESTDIR)$(man1dir)
	$(INST_MAN) $(MAN1) $(DESTDIR)$(man1dir)
.PHONY: install

uninstall:
	rm -f $(addprefix $(DESTDIR)$(libdir)/, $(LIBS))
	rm -f $(addprefix $(DESTDIR)$(bindir)/, $(SCRIPTS))
	rm -f $(addprefix $(DESTDIR)$(man1dir)/, $(MAN1))
.PHONY: uninstall

###--------------------------------------------------------------------------
### Distribution.

distdir:
	rm -rf $(distdir)
	mkdir $(distdir)
	echo $(VERSION) >$(distdir)/RELEASE
	for i in $(DISTFILES); do \
	  case "$$i" in \
	    */*) \
	      d=$${i%/*} && $(MKDIRS) $(distdir)/$$d || exit 1 \
	      ;; \
	  esac; \
	  ln $$i $(distdir)/$$i || exit 1; \
	done
.PHONY: distdir

dist: distdir
	tar chozf $(DISTTAR) $(distdir)
	rm -rf $(distdir)
.PHONY: dist

distcheck: dist
	rm -rf _distcheck
	mkdir _distcheck
	cd _distcheck && \
	tar xvfz ../$(DISTTAR) && \
	cd $(distdir) && \
	make && \
	make install DESTDIR=../_install && \
	make dist
	rm -rf _distcheck

###----- That's all, folks --------------------------------------------------