#
# ***** BEGIN LICENSE BLOCK *****
# Version: MPL 1.1/GPL 2.0/LGPL 2.1
#
# The contents of this file are subject to the Mozilla Public License Version
# 1.1 (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
# http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS IS" basis,
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
# for the specific language governing rights and limitations under the
# License.
#
# The Original Code is elfhack
#
# The Initial Developer of the Original Code is
# Mozilla Foundation
# Portions created by the Initial Developer are Copyright (C) 2010
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
#   Mike Hommey <mh@glandium.org>
#
# Alternatively, the contents of this file may be used under the terms of
# either of the GNU General Public License Version 2 or later (the "GPL"),
# or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
# in which case the provisions of the GPL or the LGPL are applicable instead
# of those above. If you wish to allow use of your version of this file only
# under the terms of either the GPL or the LGPL, and not to allow others to
# use your version of this file under the terms of the MPL, indicate your
# decision by deleting the provisions above and replace them with the notice
# and other provisions required by the GPL or the LGPL. If you do not delete
# the provisions above, a recipient may use your version of this file under
# the terms of any one of the MPL, the GPL or the LGPL.
#
# ***** END LICENSE BLOCK *****

DEPTH		= ../../..
topsrcdir	= @top_srcdir@
srcdir		= @srcdir@
VPATH		= @srcdir@

include $(DEPTH)/config/autoconf.mk

INTERNAL_TOOLS = 1

HOST_PROGRAM = elfhack
NO_DIST_INSTALL = 1
NO_PROFILE_GUIDED_OPTIMIZE = 1

VPATH += $(topsrcdir)/build

HOST_CPPSRCS = \
  elf.cpp \
  elfhack.cpp \
  $(STDCXX_COMPAT) \
  $(NULL)

OS_CXXFLAGS := $(filter-out -fno-exceptions,$(OS_CXXFLAGS)) -fexceptions

ifneq (,$(filter %86,$(TARGET_CPU)))
CPU := x86
else
ifneq (,$(filter arm%,$(TARGET_CPU)))
CPU := arm
else
CPU := $(TARGET_CPU)
endif
endif

CSRCS := \
  inject/$(CPU).c \
  inject/$(CPU)-noinit.c \
  test.c \
  $(NULL)

ifndef CROSS_COMPILE
CSRCS += dummy.c
endif

WRAP_LDFLAGS=

# need this to suppress errors due to /usr/include/linux/byteorder/swab.h
# on mozilla buildbots
OS_CXXFLAGS := $(filter-out -pedantic,$(OS_CXXFLAGS))

include $(topsrcdir)/config/rules.mk

test$(DLL_SUFFIX): test.$(OBJ_SUFFIX) elfhack $(CSRCS:.c=.$(OBJ_SUFFIX))
	$(MKSHLIB) $(LDFLAGS) $<
	@echo ===
	@echo === If you get failures below, please file a bug describing the error
	@echo === and your environment \(compiler and linker versions\), and use
	@echo === --disable-elf-hack until this is fixed.
	@echo ===
	@rm -f $@.bak
	$(CURDIR)/elfhack -b -f $@
	# Fail if the backup file doesn't exist
	[ -f "$@.bak" ]
	# Fail if the new library doesn't contain less relocations
	[ $$(objdump -R $@.bak | wc -l) -gt $$(objdump -R $@ | wc -l) ]

.PRECIOUS: test$(DLL_SUFFIX)

GARBAGE += test$(DLL_SUFFIX) test$(DLL_SUFFIX).bak

libs:: test$(DLL_SUFFIX)

ifndef CROSS_COMPILE
dummy: dummy.$(OBJ_SUFFIX) test$(DLL_SUFFIX)
	$(CC) -o $@ $^ $(LDFLAGS)

libs:: dummy
	# Will either crash or return exit code 1 if elfhack is broken
	LD_LIBRARY_PATH=$(CURDIR) $(CURDIR)/dummy

GARBAGE += dummy
endif

inject:
	$(NSINSTALL) -D $@

inject/%.c: inject.c | inject
	cp $< $@

GARBAGE_DIRS += inject

inject/%.$(OBJ_SUFFIX): DEFINES += -DBITS=$(if $(HAVE_64BIT_OS),64,32)
inject/%.$(OBJ_SUFFIX): CFLAGS := -O2 -fno-stack-protector $(filter -m% -I%,$(CFLAGS))
inject/$(CPU)-noinit.$(OBJ_SUFFIX): DEFINES += -DNOINIT
test.$(OBJ_SUFFIX): CFLAGS := -O0
host_elf.$(OBJ_SUFFIX) host_elfhack.$(OBJ_SUFFIX): elfxx.h