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#
# This is the fun part (for you), building a new Perl
# that has Cache embedded.
# You may need to adjust some settings.
# ------------------------------------------
CACHEDIR=
PERL=
CFLAGS=
LIBS=
# ------------------------------------------
# you should not need to edit anything below
# we take it all out of your perl.
#
ifndef PERL
 #?= doesn't work this way .)
PERL=$(shell which perl)
endif
ifndef CACHEDIR
CACHEDIR=/usr/cachesys
endif
LD=$(shell $(PERL) -MConfig -e 'print $$Config{ld}')
CC=$(shell $(PERL) -MConfig -e 'print $$Config{cc}')
CACHESRCDIR=$(CACHEDIR)/source/cache
CFLAGS+= -I$(CACHESRCDIR)
CFLAGS += $(shell $(PERL) -MExtUtils::Embed -e ccopts -e copts) -DCACHE_PERL=1 -I.
LIBS += $(shell   $(PERL) -MExtUtils::Embed -e ccopts -e ldopts) -lperl -ldl -lc

PRIVLIBDIR=$(shell $(PERL) -MConfig -e 'print $$Config{installprivlib}')
XSUBDIR=$(PRIVLIBDIR)/ExtUtils
XSUBPP=$(PERL) $(XSUBDIR)/xsubpp

%.o:%.c ; $(CC) -c $(CFLAGS) -o $@ $<

%.c:%.xs ; $(XSUBPP) -typemap $(XSUBDIR)/typemap $< >$@

all:  cperl

install: cperl
	@if [ -f "$(CACHEDIR)/bin/cache.old" ] ; then \
	  echo "sorry, there is already a backup copy of your cache binary" ; \
	  echo "Aborting - nothing done" ; \
	  exit 1 ; \
	fi
	mv "$(CACHEDIR)/bin/cache" "$(CACHEDIR)/bin/cache.old"
	cp ./cperl "$(CACHEDIR)/bin/cperl"
	-( cd "$(CACHEDIR)/bin" && ln -s cperl cache)
	@echo "install complete you may now start Cache again"

uninstall:
	@if [ ! -f "$(CACHEDIR)/bin/cache.old" ] ; then \
	  echo "Aborting - nothing to uninstall"; \
	  exit 1 ; \
	fi
	rm -f "$(CACHEDIR)/bin/cperl"
	rm -f "$(CACHEDIR)/bin/cache"
	mv "$(CACHEDIR)/bin/cache.old" "$(CACHEDIR)/bin/cache"

# note: I'm not proud of this one :)
cacembed.h:
	$(PERL) -e 'print "#define CACEMBED_INC \"push \@INC, ".join(",", map( { s@\"@\\\"@; chr(39)."$$_".chr(39) } @INC)).";\"\n#define PERL_OS $$^O\n"' >$@

xsinit.c: cache_fix.h
	$(PERL) -MExtUtils::Embed -e xsinit -- -o xsinit.c -std Cac

clean:
	rm -f xsinit.c cacperl.o real_main.o perl_callout.o xsinit.o cache_fix.o cacperl.c cperl cache cache.ok cacembed.h *~

perl_callout.o: cacembed.h cache_fix.h

cache_fix.o: cache_fix.h

cacperl.o: cache_fix.h

cperl: xsinit.o cacperl.o perl_callout.o real_main.o $(CACHESRCDIR)/shdir.o $(CACHESRCDIR)/cache.o cache_fix.o
	$(LD) -o $@ $^ $(LIBS)
	-rm cache
	-ln -s cperl cache
	touch cache.ok
	@echo Well played thing.
	@echo MAKE SURE THAT CACHE IS STOPPED BEFORE RUNNING make -f Makefile.unix install