#
# @(#)makelibm 1.1 92/07/30 SMI;
#

#	libm inner Makefile

#	The following are expected to be defined outside this makefile:

#	FP=		floating-point option
#	OBJDIR=		name of subdirectory to build libraries
#

#	The targets for this version:

IL=	$(OBJDIR)/libm.il
LIB = 	$(OBJDIR)/libm.a
LIBP = 	$(OBJDIR)/libm_p.a
LIBS=	$(LIBP) $(LIB)

#	The sources are in:

SOURCEDIRS= 	C F D R libF77

#	Directory for machine-independent .o files:

MIDIR=	$(OBJDIR)/midir

#	Directory for lorder/tsort

TSORTDIR = $(OBJDIR)/lordertsort

CHOWN=	/etc/chown
OLDLS=	/usr/ucb/ls
OLDCC=	/usr/ucb/cc

.PRECIOUS:	$(LIBS) 

all:	$(LIB)

$(LIB):	FORCEMAKE
	if test ! -d $(MIDIR) ; then mkdir $(MIDIR) ; fi
	if test ! -d $(MIDIR)/profiled ; then mkdir $(MIDIR)/profiled ; fi
	if test -x $(OLDCC) ; then \
		cd $(OBJDIR) ; $(MAKE) -$(MAKEFLAGS) CC=$(OLDCC) ASFLAGS='$(ASFLAGS) -D$(FP)' libm.il ; else \
		cd $(OBJDIR) ; $(MAKE) -$(MAKEFLAGS) CC='$(CC)' ASFLAGS='$(ASFLAGS) -D$(FP)' libm.il ; fi
	for i in $(SOURCEDIRS) ; do \
		(cd $$i; \
		(if test -x $(OLDCC) ; then \
			$(MAKE) -$(MAKEFLAGS) CC='$(OLDCC)' CFLAGS='$(CFLAGS) -D$(FP)' FP=$(FP) WD=`pwd` OBJDIR=$(OBJDIR) IL=../$(IL) ; else \
			$(MAKE) -$(MAKEFLAGS) CC='$(CC)' CFLAGS='$(CFLAGS) -D$(FP)' FP=$(FP) WD=`pwd` OBJDIR=$(OBJDIR) IL=../$(IL) ; fi ) ; \
		); \
	done ;
	if test -x $(OLDCC) ; then \
	cd $(OBJDIR) ; $(MAKE) -$(MAKEFLAGS) CC=$(OLDCC) CFLAGS='$(CFLAGS) -D$(FP)' ASFLAGS='$(ASFLAGS) -D$(FP)' FP=$(FP) ; else \
	cd $(OBJDIR) ; $(MAKE) -$(MAKEFLAGS) CC='$(CC)' CFLAGS='$(CFLAGS) -D$(FP)' ASFLAGS='$(ASFLAGS) -D$(FP)' FP=$(FP) ; fi
	if test -x $(OLDLS) ; then $(OLDLS) -ilgsLF $(LIBS) > $(OBJDIR)/new.stamp ; \
	else ls -ilgsLF $(LIBS) > $(OBJDIR)/new.stamp ; fi
	if cmp -s $(OBJDIR)/good.stamp $(OBJDIR)/new.stamp ; then \
		echo $(LIB) has not changed: skip lorder/tsort/ranlib ; \
	else \
	if test $(MACH) = i386; then \
		(echo $(LIB) has changed - do profiled ar; \
		rm -rf $(TSORTDIR) ; \
		mkdir $(TSORTDIR) ; \
		(cd $(TSORTDIR) ; \
		cp ../midir/profiled/*.o . ; \
		ar cr lib.a *.o ; \
		mv lib.a ../libm_p.a ; \
		rm -f *.o ; \
		echo $(LIB) has changed - do regular ar; \
		cp ../midir/*.o . ; \
		cp ../*.o . ; \
		ar cr lib.a *.o ; \
		mv lib.a ../libm.a ; \
		) ; \
		rm -rf $(TSORTDIR) ; \
		(if test -x $(OLDLS) ; then $(OLDLS) -ilgsLF $(LIBS) > $(OBJDIR)/good.stamp ; else ls -ilgsLF $(LIBS) > $(OBJDIR)/good.stamp ; fi) ; \
		echo $(LIB) done ) ; \
	else \
		(echo $(LIB) has changed - do profiled lorder/tsort/ar/ranlib;\
		rm -rf $(TSORTDIR) ; \
		mkdir $(TSORTDIR) ; \
		(cd $(TSORTDIR) ; \
		cp ../midir/profiled/*.o . ; \
		ar cr lib.a `lorder *.o | tsort` ; \
		ranlib lib.a ; \
		mv lib.a ../libm_p.a ; \
		rm -f *.o ; \
		echo $(LIB) has changed - do regular lorder/tsort/ar/ranlib; \
		cp ../midir/*.o . ; \
		cp ../*.o . ; \
		ar cr lib.a `lorder *.o | tsort` ; \
		ranlib lib.a ; \
		mv lib.a ../libm.a ; \
		) ; \
		rm -rf $(TSORTDIR) ; \
		(if test -x $(OLDLS) ; then $(OLDLS) -ilgsLF $(LIBS) > $(OBJDIR)/good.stamp ; else ls -ilgsLF $(LIBS) > $(OBJDIR)/good.stamp ; fi) ; \
		echo $(LIB) done with lorder/tsort/ranlib ) ; \
	fi ; \
	fi

install: $(LIB)
	install -d -o bin -m 755 $(INSTALLDIR)
	install -c -m 644 $(IL) $(INSTALLDIR)/libm.il ;
	install -c -m 644 $(LIBP) $(INSTALLDIR)/libm_p.a
	ranlib $(INSTALLDIR)/libm_p.a
	install -c -m 644 $(LIB) $(INSTALLDIR)/libm.a
	ranlib $(INSTALLDIR)/libm.a
# the following install the unsafed trig.il on RR
	if test `mach` = i386 ; then \
		install -c -m 644 $(OBJDIR)/trig.il $(INSTALLDIR)/trig.il ; \
	fi
# the following install the unsafed sqrt.il on RR
	if test $(FP) = f3167 ; then \
		install -c -m 644 $(OBJDIR)/sqrt.il $(INSTALLDIR)/sqrt.il ; \
	fi


clean:
	rm -f a.out core errs *.o i386/*.o m68k/*.o $(OBJDIR)/*.stamp $(TSORTDIR)
	cd $(OBJDIR) ; $(MAKE) -$(MAKEFLAGS) clean

FORCEMAKE: