# Makefile for tinylogin
#
# This program is free software; you can redistribute it and/or modify
# it 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.
#
# This program is 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 this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#

PROG=tinylogin
VERSION=0.78
BUILDTIME=$(shell date "+%Y%m%d-%H%M")
export VERSION

# Comment out the following to make a debuggable build
# Leave this off for production use.
DODEBUG=false
# If you want a static binary, turn this on.  I can't think
# of many situations where anybody would ever want it static, 
# but...
DOSTATIC=false



GCCMAJVERSION = $(shell $(CC) --version | sed -n "s/^[^0-9]*\([0-9]\)\.\([0-9].*\)[\.].*/\1/p")
GCCMINVERSION = $(shell $(CC) --version | sed -n "s/^[^0-9]*\([0-9]\)\.\([0-9].*\)[\.].*/\2/p")


GCCSUPPORTSOPTSIZE = $(shell			\
if ( test $(GCCMAJVERSION) -eq 2 ) ; then	\
    if ( test $(GCCMINVERSION) -ge 66 ) ; then	\
	echo "true";				\
    else					\
	echo "false";				\
    fi;						\
else						\
    if ( test $(GCCMAJVERSION) -gt 2 ) ; then	\
	echo "true";				\
    else					\
	echo "false";				\
    fi;						\
fi; )


ifeq ($(GCCSUPPORTSOPTSIZE), true)
    OPTIMIZATION=-Os
else
    OPTIMIZATION=-O2
endif

# Allow alternative stripping tools to be used...
ifndef $(STRIPTOOL)
    STRIPTOOL = strip
endif

# -D_GNU_SOURCE is needed because environ is used
ifeq ($(DODEBUG),true)
    CFLAGS+=-Wall -g -D_GNU_SOURCE
    STRIP= 
    LDFLAGS=-Wl,-warn-common
else
    CFLAGS+=-Wall $(OPTIMIZATION) -fomit-frame-pointer -D_GNU_SOURCE
    LDFLAGS=-Wl,-warn-common -s
    STRIP= $(STRIPTOOL) --remove-section=.note --remove-section=.comment $(PROG)
    #Only staticly link when _not_ debugging 
    ifeq ($(DOSTATIC),true)
	LDFLAGS+=-Wl,-warn-common --static
    endif
    
endif

ifndef $(PREFIX)
    PREFIX=`pwd`/_install
endif

LIBRARIES=-lcrypt
OBJECTS=env.o myname.o obscure.o pwd2spwd.o setupenv.o shadow.o shell.o utmp.o xmalloc.o
OBJECTS+=$(shell ./tinylogin.sh) utility.o
CFLAGS+= -DTLG_VER='"$(VERSION)"'
CFLAGS+= -DTLG_BT='"$(BUILDTIME)"'


all: tinylogin.links

$(PROG): $(OBJECTS)
	$(CC) $(LDFLAGS) -o $(PROG) $(OBJECTS) $(LIBRARIES)
	$(STRIP)

tinylogin.links: $(PROG)
	- ./tinylogin.mkll | sort >$@

.PHONY: docs
docs:	docs/tinylogin.pod
	$(MAKE) -C docs clean all

.PHONY: clean
clean:
	- rm -f *~ *.o core tinylogin.links 
	- rm -rf $(PROG)_install

distclean: clean
	- rm -f $(PROG)

$(OBJECTS):  *.h Makefile

.PHONY: install
install:    all
	./install.sh $(PREFIX)

dist: release

release: distclean
	$(MAKE) -C docs clean all 
	cd ..;					\
	rm -rf tinylogin-$(VERSION);		\
	cp -a tinylogin tinylogin-$(VERSION);	\
						\
	find tinylogin-$(VERSION)/ -type d	\
				 -name CVS	\
				 -print		\
		| xargs rm -rf;			\
						\
	find tinylogin-$(VERSION)/ -type f	\
				 -name .cvsignore \
				 -print		\
		| xargs rm -f;			\
						\
	tar -cvzf tinylogin-$(VERSION).tar.gz tinylogin-$(VERSION)/;
#	(cd .. ; rm -rf $(PROG)-$(VERSION) ; cp -a $(PROG) $(PROG)-$(VERSION); rm -rf $(PROG)-$(VERSION)/CVS $(PROG)-$(VERSION)/.cvsignore ; tar -cvzf $(PROG)-$(VERSION).tar.gz $(PROG)-$(VERSION)) 


