# This Makefile is chaotic. Sorry.
# It gets (most of) the job done and that's what counts.
#

all:: first_rule

unexport KERNEL
unexport PROGRAM
unexport PROGRAMS
unexport CC
unexport CFLAGS
unexport LDFLAGS
unexport SOURCES
unexport HEADERS
unexport LIB
unexport LIBS
unexport OBJ
unexport OBJS
unexport DOCARDS
unexport WHAT
unexport REALSOURCE
unexport DOSRC
unexport SUBDIRS
unexport EXTRA_CFLAGS
unexport EXTRA_LDFLAGS
unexport EXTRA_LIBS

ifneq ($(strip $(DOCARDS)),)
KERNEL=1
endif

include $(TOPDIR)/Make.config

export KERNELSRC
export TOPDIR

VERSION := $(shell $(TOPDIR)/tools/getversion $(KERNELSRC))

.PHONY:	dummy 

ifeq ($(strip $(HEADERS)),)
HEADERS := $(wildcard *.h)
endif

DOSRC:=1
ifneq ($(strip $(REALSOURCE)),)
DOSRC:=0
endif
ifneq ($(strip $(DOCARDS)),)
DOSRC:=1
endif

ifeq ($(DOSRC),1)
ifneq ($(strip $(KERNEL)),)
ifeq ($(strip $(SOURCES)),)
SOURCES := $(wildcard *.c)
endif
else
ifeq ($(strip $(PSOURCES)),)
PSOURCES := $(wildcard *.c)
endif
endif
endif

ifneq ($(strip $(DOCARDS)),)
OLDSOURCES := $(SOURCES)
SOURCES := $(filter $(addsuffix .c,$(CARDS)),$(SOURCES))
endif


INCLUDES = -I$(TOPDIR)/include -I$(TOPDIR)/compat -I$(TOPDIR)/streams -I$(KERNELSRC)/include $(EXTRA_INCLUDES)

first_rule::	libs programs modules


all depend indent clean install::
ifneq ($(strip $(SUBDIRS)),)
	$(MAKE) WHAT=$@ subdirs 

subdirs::
	 set -e; for i in $(SUBDIRS); do $(MAKE) -r TOPDIR=../$(TOPDIR) -C $$i $(WHAT); done
endif

depend:: 

ifneq ($(strip $(SOURCES)),)
OBJS = $(addsuffix .o, $(basename $(SOURCES)))
endif
ifneq ($(strip $(PSOURCES)),)
POBJS = $(addsuffix .o, $(basename $(PSOURCES)))
ifeq ($(strip $(PROGRAM)),)
ifeq ($(strip $(PROGRAMS)),)
ifeq ($(strip $(LIB)),)
PROGRAMS = $(basename $(PSOURCES))
endif
endif
endif
endif

ifneq ($(strip $(REALSOURCE)),)
$(OBJS): $(REALSOURCE)
	$(CC) $(CFLAGS) $(INCLUDES) $(EXTRA_CFLAGS) -DREALNAME=$(basename $@) -D_$(basename $@)_ -c -o $@ $<
else
ifeq ($(DOCARDS),1)
%.o:	%.c
	$(CC) $(CFLAGS) $(INCLUDES) $(EXTRA_CFLAGS) -DREALNAME=$(basename $@) -D_$(basename $@)_ -c -o $@ $<
else
%.o:	%.c
	$(CC) $(CFLAGS) $(INCLUDES) $(EXTRA_CFLAGS) -c -o $@ $<
endif
endif

clean::
	rm -f .depend core
	rm -f *.vi? 
ifneq ($(strip $(TARGET)),)
	rm -f $(TARGET)
endif
ifneq ($(strip $(POBJS)),)
	rm -f $(POBJS)
endif
ifneq ($(strip $(OBJ)),)
	rm -f $(OBJ)
endif
ifneq ($(strip $(OBJS)),)
	rm -f $(OBJS)
endif
ifneq ($(strip $(PROGRAM)),)
	rm -f $(PROGRAM)
endif
ifneq ($(strip $(filter-out $(NOCLEAN),$(PROGRAMS))),)
	rm -f $(filter-out $(NOCLEAN),$(PROGRAMS))
endif
ifneq ($(strip $(LIB)),)
	rm -f $(LIB)
endif

ifneq ($(strip $(PROGRAM)),)
programs:: $(PROGRAM)
$(PROGRAM): $(POBJS) $(filter %.a,$(LIBS) $(EXTRA_LIBS))
	$(CC) $(EXTRA_LDFLAGS) $(LDFLAGS) -o $@ $(POBJS) $(EXTRA_LIBS) $(LIBS)
else
ifneq ($(strip $(PROGRAMS)),)
programs:: $(PROGRAMS)

%:	%.o    $(filter %.a,$(LIBS) $(EXTRA_LIBS))
	$(CC) $(EXTRA_LDFLAGS) $(LDFLAGS) -o $@ $< $(EXTRA_LIBS) $(LIBS) 
else
programs::

endif
endif

ifneq ($(strip $(PROGRAMS)),)
programs:: $(PROGRAMS)

else
programs::

endif

ifneq ($(strip $(LIB)),)
libs: $(LIB)

$(LIB): $(POBJS)
	rm -f $@
	$(AR) rcs $@ $^
else
libs:
endif


lib::
ifneq ($(strip $(P_LIB)),)
	$(MAKE) $(P_OBJ)
endif

ifneq ($(strip $(OBJS)),)
ifeq ($(strip $(OBJ)),)
modules: $(OBJS)
else
modules: $(OBJ)

$(OBJ):	$(OBJS)
	$(LD) -r -o $@ $^
endif

else
modules:

endif

install::
ifeq ($(strip $(KERNEL)),1)
ifneq ($(strip $(OBJ)),)
	$(TOPDIR)/tools/insmod $(OBJ)
else
ifeq ($(strip $(DOCARDS)),1)
	$(foreach OBJ,$(OBJS),$(TOPDIR)/tools/d_insmod $(OBJ); )
else
	$(foreach OBJ,$(OBJS),$(TOPDIR)/tools/insmod $(OBJ); )
endif
endif
else
ifneq ($(strip $(PROGRAM)),)
	install $(PROGRAM) $(DESTDIR)/bin-$(VERSION)
endif
ifneq ($(strip $(PROGRAMS)),)
	install $(PROGRAMS) $(DESTDIR)/bin-$(VERSION)
endif
endif


indent::
ifneq ($(strip $(PSOURCES)),)
	$(TOPDIR)/tools/indent.sh $(PSOURCES)
endif
ifneq ($(strip $(SOURCES)),)
	$(TOPDIR)/tools/indent.sh $(SOURCES)
endif
ifneq ($(strip $(HEADERS)),)
	$(TOPDIR)/tools/indent.sh $(HEADERS)
endif

ifeq (.depend,$(wildcard .depend))
include .depend
endif

depend::
	rm -f .depend


ifneq ($(strip $(SOURCES)),)
ifneq ($(strip $(REALSOURCE)),)
depend::     Makefile $(REALSOURCE) $(HEADERS)
	$(foreach SOURCE,$(SOURCES), $(CC) -M $(CFLAGS) $(INCLUDES) $(EXTRA_CFLAGS) $(REALSOURCE) -D_$(SOURCE:.c=)_ | sed -e s/$(REALSOURCE:.c=.o)/$(SOURCE:.c=.o)/ >> .depend ; )
else
depend::     Makefile $(SOURCES) $(HEADERS)

ifneq ($(strip $(CONFIG_MODVERSIONS)),)
ifneq ($(strip $(SYMTAB)),)
	$(CC) $(CFLAGS) $(INCLUDES) $(EXTRA_CFLAGS) -E -D__GENKSYMS__ $(SYMTAB) | /sbin/genksyms $(TOPDIR)/include
	for i in $(SYMTAB:.c=.ver) ; do echo "#include \"$$i\"" ; done >> $(TOPDIR)/include/symtables
endif
endif

	$(CC) -M $(CFLAGS) $(INCLUDES) $(EXTRA_CFLAGS) $(SOURCES) >> .depend

endif
endif

ifneq ($(strip $(PSOURCES)),)
depend::     Makefile $(PSOURCES) $(HEADERS)
	$(CC) -M $(CFLAGS) $(INCLUDES) $(EXTRA_CFLAGS) $(PSOURCES) >> .depend
endif