#
# Copyright (c) 2011-2015, Emulex
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without 
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice, 
#    this list of conditions and the following disclaimer.
# 
# 2. Redistributions in binary form must reproduce the above copyright notice, 
#    this list of conditions and the following disclaimer in the documentation 
#    and/or other materials provided with the distribution.
# 
# 3. Neither the name of the copyright holder nor the names of its contributors 
#    may be used to endorse or promote products derived from this software 
#    without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
# POSSIBILITY OF SUCH DAMAGE.
#

OS              = $(shell uname -s)
UNAME_P         = $(shell uname -p)

ifdef CROSS

ifeq ($(CROSS),arm64)
# Setup the cross compiling tools
CC = aarch64-linux-gnu-gcc
LD = aarch64-linux-gnu-ld
AR = aarch64-linux-gnu-ar
# Override uname -p to pick up ARM64 definitions
UNAME_P = aarch64
else ifeq ($(CROSS),i386)
LIB	= $(OBJDIR)/elxcdul.i386.a
ZLIB	= zlib/libz.i386.a
else
$(error "Unsupported architecture $(CROSS)")
endif

endif

DEFINES     =
INCLUDES    = -I. -Izlib/
WARNINGS    = -Wall -Werror
DEBUG       = -g

RELEASE_FILES = \
	ecd_api.h \
	ecdtest.c \
	ecdtest.make \
	README

# If not excluding BSD, then add in the BSD elxcdul.a
# Used for Linux-only driver source distrubution builds
ifneq ($(EXCLUDE_BSD),TRUE)
RELEASE_FILES += \
	bsd_objs/elxcdul.a
endif

# If not excluding Linux, then add in the Linux elxcdul.a
# Used BSD-only driver source distrubution builds
ifneq ($(EXCLUDE_LINUX),TRUE)
RELEASE_FILES += \
	linux_objs/elxcdul.a \
	linux_objs/elxcdul.arm64.a
endif

CFLAGS	= $(DEFINES) $(INCLUDES) $(WARNINGS)
LDFLAGS	=

ifeq ($(OS), FreeBSD)
OBJDIR      = bsd_objs
endif

ifeq ($(OS), Linux)
OBJDIR	= linux_objs

ifeq ($(CROSS),i386)
CFLAGS	+= -m32
LDFLAGS	+= -melf_i386
endif

ifeq ($(UNAME_P),aarch64)
LIB	= $(OBJDIR)/elxcdul.arm64.a
ZLIB	= zlib/libz.arm64.a
endif

endif

LIB	?= $(OBJDIR)/elxcdul.a
ZLIB	?= zlib/libz.a

LIBSRCS     = ecd.c cdbc.c
LIBOBJS     = $(patsubst %.c,$(OBJDIR)/%.o,$(LIBSRCS))

all : $(OBJDIR) $(LIB)

$(OBJDIR):
	-mkdir -p $@

list_release_files:
	@echo $(RELEASE_FILES)

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

$(LIB) : $(LIBOBJS)
	$(eval LINKER_OUT := $(@:%.a=%.o))
	$(LD) $(LDFLAGS) -r -o $(LINKER_OUT) $(LIBOBJS) $(ZLIB)
	$(AR) $(ARFLAGS) $@ $(LINKER_OUT)

clean:
	rm -f $(OBJDIR)/*.o

clobber:    clean
	rm -rf $(OBJDIR)
	rm -f .depend ecdtest
	rm -rf release

.depend:
	$(CC) -MM $(CFLAGS) $(LIBSRCS) > .depend

-include .depend

CUST_DIST_FILES = ecdtest.c ecd_api.h $(OBJDIR)/elxcdul.a $(OBJDIR)/elxcdul.i386.a README

tarfile = elxcdul-VERSION.tgz

custdist: clobber $(OBJDIR) $(LIB)
	@echo "Creating customer tar file: $(tarfile)"
	@if [ \! -d release ] ;  then \
		mkdir release; \
	fi
	@rm -f release/*
	@cp $(CUST_DIST_FILES) release
	@sed <ecdtest.make -e "s/$(OBJDIR)\/\(.*\)/\1/g" > release/Makefile
	@(cd release; tar cfz ../elxcdul-VERSION.tgz *; )