#
# Copyright (c) 1998-2001 University of Utah and the Flux Group.
# All rights reserved.
# 
# This file is part of the Flux OSKit.  The OSKit is free software, also known
# as "open source;" you can redistribute it and/or modify it under the terms
# of the GNU General Public License (GPL), version 2, as published by the Free
# Software Foundation (FSF).  To explore alternate licensing terms, contact
# the University of Utah at csl-dist@cs.utah.edu or +1-801-585-3271.
# 
# The OSKit 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 GPL for more details.  You should have
# received a copy of the GPL along with the OSKit; see the file COPYING.  If
# not, write to the FSF, 59 Temple Place #330, Boston, MA 02111-1307, USA.
#

ifndef _oskit_unix_makerules_
_oskit_unix_makerules_ = yes

#
# There are three targets:
#
# 1) unix_support.o: for non-pthread programs. Override equiv implementations
#    in the device and clientos library, plus a couple of others.
# 2) unix_support_pthread.o: Almost the same set of files as (1), but with
#    the addition of some files that override stuff in the threads library.
# 3) liboskit_unix.a: The optional stuff, that is only used by unix mode
#    programs. Mostly overrides stuff in other libraries.
#
TARGETS       = liboskit_unix.a unix_support_pthreads.o unix_support.o

#
# This stuff overrides the equivalent osenv code in dev library.
# Both pthread and nonpthread programs need all this stuff.
#
OSENV         = osenv.o osenv_rtc.o osenv_intr.o pit.o rtclock.o irq.o \
		unix_mem.o base_stack.o base_irq_softint_handler.o 

#
# These are the list of objects that get summarily shoved into the program.
# pthread and non-pthread programs need a slightly different set of files.
#
NOPTHREAD_OBJ = $(OSENV) mem_lock.o stdio.o fd.o 
PTHREAD_OBJ   = $(OSENV) pthread_guard.o threaded_stdio.o threaded_fd.o

#
# This is the optional stuff. Note that the $UNIX_HOST/GNUmakerules will add
# to this list.
#
UNIXLIB_OBJ   = oskit_linux_block.o bmodfs.o filesystem.o libkern.o \
		version.o errno.o mmap.o skbufio.o skbufio_mem.o

SRCDIRS	     += $(OSKIT_SRCDIR)/unix

#
# -DOSKIT is used in assimilated code to mark our changes to it.
#
OSKIT_CFLAGS += -DOSKIT $(NATIVE_DEFS)


CLEAN_FILES  += $(TARGETS)

all:	startup $(TARGETS) $(addprefix $(OBJDIR)/lib/, $(TARGETS))

# Include the host-specific UNIXLIB objects
include $(OSKIT_SRCDIR)/unix/$(UNIX_HOST)/GNUmakerules

unix_support.o: $(NOPTHREAD_OBJ) $(ERROBJ)
	$(OSKIT_QUIET_MAKE_INFORM) "Generating $@"
	$(LD) -r -o $@ $(NOPTHREAD_OBJ) $(ERROBJ)

unix_support_pthreads.o: $(PTHREAD_OBJ) $(ERROBJ)
	$(OSKIT_QUIET_MAKE_INFORM) "Generating $@"
	$(LD) -r -o $@ $(PTHREAD_OBJ) $(ERROBJ)

liboskit_unix.a: $(UNIXLIB_OBJ) unix_native.o
	$(OSKIT_QUIET_MAKE_INFORM) "Creating library $@"
	$(AR) $(ARFLAGS) $@ $^
	$(RANLIB) $@

$(OBJDIR)/lib/%: %
	$(OSKIT_QUIET_MAKE_INFORM) "Installing $<"
	test -d $(OBJDIR)/lib || mkdir $(OBJDIR)/lib
	cp $< $@

INSTALL_OSKITDIR = $(INSTALL_LIBDIR)/oskit

install: $(addprefix $(INSTALL_OSKITDIR)/,$(filter-out lib%.a,$(TARGETS))) \
	 $(addprefix $(INSTALL_LIBDIR)/,$(filter lib%.a,$(TARGETS))) \
	 $(addprefix $(INSTALL_OSKITDIR)/unix/,$(STARTFILES))

include $(OSKIT_SRCDIR)/GNUmakerules

OSKIT_CPPFLAGS := $(filter-out -nostdinc,$(OSKIT_CPPFLAGS))


$(INSTALL_OSKITDIR)/unix/%: %
	$(OSKIT_QUIET_MAKE_INFORM) "Installing $<"
	test -d $(@D) || mkdir -p $(@D)
	$(INSTALL) $< $@

native_syms: $(UNIXLIB_OBJ) unix_support_pthreads.o unix_support.o \
	     $(STARTFILES)
	$(OSKIT_QUIET_MAKE_INFORM) "Generating native symbols list"
	$(NM) -u $^ | sed -n 's/^[U ]*native_//p' | sort -u > $@
nativecalls.o: native_syms $(NATIVECALLS_OBJ)
# We need -dc to force errno to become a defined (and thus renamable
# and localizable) .bss symbol rather than staying a common.
	$(OSKIT_QUIET_MAKE_INFORM) "Generating $@"
	$(LD) -dc -static -r -L/lib -L/usr/lib -o $@ `sed 's/^/-u /' $<` \
	       $(NATIVECALLS_OBJ) -lc
nativecalls.stripped.o: nativecalls.o native_syms
	$(OSKIT_QUIET_MAKE_INFORM) "Generating $@"
	$(OBJCOPY) --strip-unneeded `sed 's/^/-K /' native_syms` $< $@

nativecalls.renamed.o: nativecalls.stripped.o native_syms
	$(OSKIT_QUIET_MAKE_INFORM) "Generating $@"
	$(LD) -r -o $@ `sed 's/^.*$$/-defsym native_&=&/' native_syms` $<

###
### 'objcopy -L name': make name local to the file
### 'objcopy -K name': copy only name from the source file
unix_native.o: nativecalls.renamed.o
	$(OSKIT_QUIET_MAKE_INFORM) "Generating $@"
	$(OBJCOPY) --strip-unneeded \
		   `$(NM) $< | $(AWK) '/native_| __/ { print "-K", $$NF; next } \
				       / w / { next } \
				       { print "-L", $$NF }'` $< $@

CLEAN_FILES+=native_syms 

# Probably not needed by Knit but we'll build it anyway
prepare:: native_syms

endif