#
# To less warnings, enter 'make <target> WARN1='
#

CC=	gcc

WARN0=	-Wall -Wstrict-prototypes -pedantic -Wno-long-long \
	-Wcast-align -Wpointer-arith #-Wfloat-equal #-Werror
WARN1?= -W -Wwrite-strings -Wcast-qual -Wshadow #-Wconversion

WOPTS=	$(WARN0) $(WARN1)

O64= -DLARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64

OD    ?= /dev/null
DEBUG ?= 0
DEP   ?= _depend

TRGS=stfufs-server stfufs-server-launcher stfufs

all:  $(TRGS)

CF= -O2
LF= -s

__debug: CF= -ggdb -fstack-protector -Wstack-protector
__debug: LF=
__debug: $(TRGS)

OPT= $(O64) $(CF) -DDEBUG=$(DEBUG)

client: stfufs
server: stfufs-server stfufs-server-launcher

COBJS=pretocol.o random.o util.o simplexdr.o

SRVONLY=stfufs-server.o stfufs-server-fs.o \
	stfufs-server-buffer.o stfufs-server-errmap.o

CLIONLY=stfufs-client.o stfufs-client-fuse.o \
	stfufs-client-buffer.o stfufs-client-errmap.o

SRVOBJS0=$(SRVONLY) $(COBJS)
SRVOBJS=$(SRVOBJS0:%=$(OD)/%)
CLIOBJS0=$(CLIONLY) $(COBJS)
CLIOBJS=$(CLIOBJS0:%=$(OD)/%)

ALLOBJS=$(SRVONLY) $(CLIONLY) $(COBJS)

stfufs-server: $(SRVOBJS)
	$(CC) $(LF) -o $@ $(SRVOBJS)

stfufs-server-launcher: stfufs-server-launcher.c
	$(CC) $(LF) -o $@ $(OPT) $(WOPTS) $<


stfufs: $(CLIOBJS)
	$(CC) $(LF) -o $@ $(CLIOBJS) `pkg-config --libs fuse`

ODS = $(OD)/stamp

$(ODS):
	test -d $(OD) || mkdir $(OD)
	touch $@

stfufs-client-fuse.o: stfufs-client-fuse.c
	$(CC) -o $@ -c $< `pkg-config --cflags fuse` $(OPT) $(WOPTS)

$(OD)/%.o: %.c $(ODS) $(DEP)
	$(CC) -o $@ -c $<  $(OPT) $(WOPTS)

$(OD)/stfufs-client-buffer.o: stfufs-buffer.c $(ODS) $(DEP)
	$(CC) -o $@ -c $<  $(OPT) $(WOPTS) -DSTFUFS_CLIENT

$(OD)/stfufs-server-buffer.o: stfufs-buffer.c $(ODS) $(DEP)
	$(CC) -o $@ -c $<  $(OPT) $(WOPTS) -DSTFUFS_SERVER

# This is not currently cross-compiler compatible. Sorry.
# That would require using just c preprocessor and perl/...
# I'll leave this exercise to be done later...
stfufs-server-errmap.c: stfufs-client-errmap.c stfufs-errmaps.h
	sh $< gen-srv-errmap
	./gen-srv-errmap > $@
	rm ./gen-srv-errmap

$(DEP): Makefile.build
	for i in *.c; do gcc -MM $(OPT) $$i; done \
	  | sed -e '/^[a-z]/ s|^|$(OD)/|' -e \
		's|buffer.o:|client-buffer.o $(OD)/stfufs-server-buffer.o:|' \
	  > $(DEP)

include $(DEP)

install: $(TRGS) chkprefix
	sed -n '/^install.sh:/,/^ *$$/ p' Makefile.build \
		| tail -n +4 | sh -ves

chkprefix: ALWAYS
	@[ x"$(PREFIX)" != x ] \
		|| { sed -n 's/^#prfx: \?/ /p;' Makefile.build; false; }

#prfx:
#prfx: Can not install: PREFIX missing.
#prfx:
#prfx: files to be installed:
#prfx:
#prfx:    PREFIX/bin/stfufs
#prfx:    PREFIX/bin/stfufs-server
#prfx:    PREFIX/lib/stfufs/stfufs-server-<protocol version>
#prfx:
#prfx: Try for example: 'make install PREFIX=/usr' or 'make install PREFIX=/usr/local'
#prfx: 

install.sh:
	exit 1 # this target is not to be run
	:
	die () { echo "$@" >&2; exit 1; }
	[ -d "$PREFIX" ] || die Directory "'"$PREFIX"'" does not exist
	[ -d "$PREFIX/bin" ] || { set -x; mkdir -m 755 -p "$PREFIX/bin"; }
	[ -d "$PREFIX/lib/stfufs" ] \
		|| { set -x; mkdir -m 755 -p "$PREFIX/lib/stfufs"; }
	:
	grep ' TCP FUSE .* protocol version 2' $PREFIX/bin/stfufs-server \
		&& cp $PREFIX/bin/stfufs-server $PREFIX/lib/stfufs/stfufs-server-2 || true
	test -x stfufs && cp stfufs $PREFIX/bin || true
	cp stfufs-server-launcher $PREFIX/bin/stfufs-server
	eval `sh version.h`
	cp stfufs-server $PREFIX/lib/stfufs/stfufs-server-$protver

.PHONY: ALWAYS


tags:
	etags *.c *.h

clean:
	rm -rf stfufs-server-errmap.c TAGS _depend* _obj* *~

distclean: clean
	rm -f $(TRGS)