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# This Source Code Form is subject to the terms of the Mozilla Public

# License, v. 2.0. If a copy of the MPL was not distributed with this

# file, You can obtain one at http://mozilla.org/MPL/2.0/.

include $(topsrcdir)/config/rules.mk

ifdef COMPILE_ENVIRONMENT

ifndef RELRHACK

test-array$(DLL_SUFFIX) test-ctors$(DLL_SUFFIX): %$(DLL_SUFFIX): %.$(OBJ_SUFFIX) elfhack

	$(MKSHLIB) $(LDFLAGS) $< -nostartfiles

	@echo ===

	@echo === If you get failures below, please file a bug describing the error

	@echo === and your environment \(compiler and linker versions\), and

	@echo === provide the pre-elfhacked library as an attachment.

	@echo === Use --disable-elf-hack until this is fixed.

	@echo ===

	# Fail if the library doesn't have $(DT_TYPE) .dynamic info

	$(READELF) -d $@ | grep '\b$(DT_TYPE)\b'

	@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

	[ $$($(READELF) -r $@.bak | wc -l) -gt $$($(READELF) -r $@ | wc -l) ]

test-array$(DLL_SUFFIX) test-ctors$(DLL_SUFFIX): DSO_SONAME=$@

test-array$(DLL_SUFFIX): DT_TYPE=INIT_ARRAY

test-ctors$(DLL_SUFFIX): DT_TYPE=INIT

libs:: test-array$(DLL_SUFFIX) test-ctors$(DLL_SUFFIX)

.PRECIOUS: test-array$(DLL_SUFFIX) test-ctors$(DLL_SUFFIX)

ifndef CROSS_COMPILE

dummy: dummy.$(OBJ_SUFFIX)

	$(CC) -o $@ $^ $(LDFLAGS)

libs:: dummy

	# Will either crash or return exit code 1 if elfhack is broken

	LD_PRELOAD=$(CURDIR)/test-array$(DLL_SUFFIX) $(CURDIR)/dummy

	LD_PRELOAD=$(CURDIR)/test-ctors$(DLL_SUFFIX) $(CURDIR)/dummy

endif

endif

endif