Makefile.standalone - platform/external/swiftshader - Gitiles

 # The following variables will likely need to be modified, depending on where
 # and how you built LLVM & Clang. They can be overridden in a command-line
 # invocation of make, like:
 #
 #   make LLVM_SRC_PATH=<path> LIBCXX_INSTALL_PATH=<path> CLANG_PATH=<path> \
 #        PNACL_BIN_PATH=<path> ...
 #

 # LLVM_SRC_PATH is the path to the root of the checked out source code. This
 # directory should contain the configure script, the include/ and lib/
 # directories of LLVM, Clang in tools/clang/, etc.
 # Alternatively, if you're building vs. a binary download of LLVM, then
 # LLVM_SRC_PATH can point to the main untarred directory.
 LLVM_SRC_PATH ?= ../llvm

 # The x86-32-specific sandboxed translator directory.
 # It holds sandboxed versions of libraries and binaries.
 SB_LLVM_PATH ?= $(shell readlink -e \
   ../../out/sandboxed_translators_work/translator-i686/llvm-sb/Release)

 # NACL_ROOT is the root of the native client repository.
 NACL_ROOT ?= $(shell python -c "import sys; sys.path.insert(0, 'pydir'); \
   import utils; print utils.FindBaseNaCl()")

 # TOOLCHAIN_ROOT is the location of NaCl/PNaCl toolchains and other
 # tools like qemu.
 TOOLCHAIN_ROOT ?= $(shell readlink -e $(NACL_ROOT)/toolchain/linux_x86)

 # PNACL_TOOLCHAIN_ROOT is the location of the PNaCl toolchain.
 # This is used as the default root for finding binutils, libcxx, etc.
 PNACL_TOOLCHAIN_ROOT ?= $(shell readlink -e $(TOOLCHAIN_ROOT)/pnacl_newlib_raw)

 # The location of PNaCl tools (e.g., binutils objdump, pnacl-clang++, etc.).
 PNACL_BIN_PATH ?= $(shell readlink -e $(PNACL_TOOLCHAIN_ROOT)/bin)

 # Hack to auto-detect autoconf versus cmake build of LLVM.  If the LLVM tools
 # were dynamically linked with something like libLLVM-3.7svn.so, it is an
 # autoconf build, otherwise it is a cmake build.  AUTOCONF is set to 0 for
 # cmake, nonzero for autoconf.
 AUTOCONF ?= $(shell ldd $(PNACL_BIN_PATH)/opt | grep -c libLLVM-)

 # CLANG_PATH is the location of the clang compiler to use for building
 # the host binaries.
 CLANG_PATH ?= $(shell readlink -e \
   $(NACL_ROOT)/../third_party/llvm-build/Release+Asserts/bin)

 # LIBCXX_INSTALL_PATH is the directory where libc++ is located. It should
 # contain header files and corresponding libraries. This is used for
 # building the host binaries in conjuction with clang.
 LIBCXX_INSTALL_PATH ?= $(PNACL_TOOLCHAIN_ROOT)
 STDLIB_FLAGS := -stdlib=libc++ -I$(LIBCXX_INSTALL_PATH)/include/c++/v1

 HOST_ARCH ?= x86_64
 ifeq ($(HOST_ARCH),x86_64)
   HOST_FLAGS = -m64
 else
   ifeq ($(HOST_ARCH),x86)
     HOST_FLAGS = -m32
   endif
 endif

 ifdef DEBUG
   OBJDIR = build/Debug
   OPTLEVEL = -O0
   LINKOPTLEVEL = -O0
 else
   OBJDIR = build/Release
   OPTLEVEL = -O2 -ffunction-sections -fdata-sections
   LINKOPTLEVEL = -O2
 endif

 # The list of CXX defines that are dependent on build parameters.
 BASE_CXX_DEFINES =
 CXX_EXTRA =
 LD_EXTRA =

 ifdef MINIMAL
   NOASSERT = 1
   OBJDIR := $(OBJDIR)+Min
   BASE_CXX_DEFINES += -DALLOW_DUMP=0 -DALLOW_LLVM_CL=0 -DALLOW_LLVM_IR=0 \
     -DALLOW_LLVM_IR_AS_INPUT=0 -DALLOW_MINIMAL_BUILD=1
 else
   BASE_CXX_DEFINES += -DALLOW_DUMP=1 -DALLOW_LLVM_CL=1 -DALLOW_LLVM_IR=1 \
     -DALLOW_LLVM_IR_AS_INPUT=1 -DALLOW_MINIMAL_BUILD=0
 endif

 SB_CXX_DEFINES := $(BASE_CXX_DEFINES) -DPNACL_BROWSER_TRANSLATOR=1
 CXX_DEFINES := $(BASE_CXX_DEFINES) -DPNACL_BROWSER_TRANSLATOR=0

 ifdef NOASSERT
   ASSERTIONS = -DNDEBUG
 else
   ASSERTIONS =
   OBJDIR := $(OBJDIR)+Asserts
 endif

 ifdef UBSAN
   OBJDIR := $(OBJDIR)+UBSan
   CXX_EXTRA += -fsanitize=undefined -fno-sanitize=vptr \
                -fno-sanitize=nonnull-attribute
   LD_EXTRA += -fsanitize=undefined
 endif

 ifdef UBSAN_TRAP
   OBJDIR := $(OBJDIR)+UBSan_Trap
   CXX_EXTRA += -fsanitize=undefined-trap -fsanitize-undefined-trap-on-error \
                -fno-sanitize=vptr -fno-sanitize=nonnull-attribute
   LD_EXTRA += -fsanitize=undefined-trap
 endif

 ifdef TSAN
   OBJDIR := $(OBJDIR)+TSan
   CXX_EXTRA += -fsanitize=thread
   LD_EXTRA += -fsanitize=thread
 endif

 ifdef ASAN
   OBJDIR := $(OBJDIR)+ASan
   CXX_EXTRA += -fsanitize=address
   LD_EXTRA += -fsanitize=address
 endif

 ifdef MSAN
   # TODO(ascull): this has an as yet undiagnosed uninitialized memory access
   OBJDIR := $(OBJDIR)+MSan
   CXX_EXTRA += -fsanitize=memory
   LD_EXTRA += -fsanitize=memory
 endif

 ifdef FORCEASM
   FORCEASM_FLAG = --filetype=asm
   # With --filetype=asm and --sandbox, the llvm-mc assembler emits the lock and
   # 16-bit prefixes in the "wrong" order, causing the validator to reject the
   # resulting nexe.  So we just disable those tests for now.
   FORCEASM_XTEST_EXCLUDES = -e x8632,sandbox,test_sync_atomic
   FORCEASM_LIT_PARAM = --param=FORCEASM
   # x86 sandboxing lit tests are disabled because llvm-mc uses different
   # relocations for pushing return addresses onto the stack.
   # TODO(jpp): fix this.
   FORCEASM_LIT_TEST_EXCLUDES = --filter='^(?!.*/x86/sandboxing.ll).*'
 else
   FORCEASM_FLAG =
   FORCEASM_XTEST_EXCLUDES =
   FORCEASM_LIT_PARAM =
   FORCEASM_LIT_TEST_EXCLUDES =
 endif

 SB_OBJDIR := $(OBJDIR)+Sandboxed

 $(info -----------------------------------------------)
 $(info Using LLVM_SRC_PATH = $(LLVM_SRC_PATH))
 $(info Using SB_LLVM_PATH = $(SB_LLVM_PATH))
 $(info Using NACL_ROOT = $(NACL_ROOT))
 $(info Using TOOLCHAIN_ROOT = $(TOOLCHAIN_ROOT))
 $(info Using PNACL_TOOLCHAIN_ROOT = $(PNACL_TOOLCHAIN_ROOT))
 $(info Using PNACL_BIN_PATH = $(PNACL_BIN_PATH))
 $(info Using CLANG_PATH = $(CLANG_PATH))
 $(info Using LIBCXX_INSTALL_PATH = $(LIBCXX_INSTALL_PATH))
 $(info Using HOST_ARCH     = $(HOST_ARCH))
 $(info -----------------------------------------------)

 LLVM_CXXFLAGS := `$(PNACL_BIN_PATH)/llvm-config --cxxflags`
 SB_LLVM_CXXFLAGS := $(LLVM_CXXFLAGS)

 # Listing specific libraries that are needed for pnacl-sz
 # and the unittests, since we build "tools-only" for the
 # sandboxed_translators (which doesn't include every library
 # listed by llvm-config).

 LLVM_LIBS_LIST := -lLLVMIRReader -lLLVMBitReader -lLLVMNaClBitTestUtils \
     -lLLVMNaClBitReader -lLLVMNaClBitAnalysis -lLLVMNaClBitWriter \
     -lLLVMAsmParser -lLLVMNaClAnalysis -lLLVMCore -lLLVMSupport

 ifeq ($(AUTOCONF), 0)
   # LLVM cmake build
   LLVM_LIBS := $(LLVM_LIBS_LIST)
   # For the cmake build, the gtest libs end up in the same place as the LLVM
   # libs, so no "-L..." arg is needed.
   GTEST_LIB_PATH ?=
   CLANG_FORMAT_PATH ?= $(PNACL_BIN_PATH)
 else
   # LLVM autoconf build
   LLVM_LIBS := -lLLVM-3.7svn
   GTEST_LIB_PATH ?= -L../../out/llvm_x86_64_linux_work/Release+Asserts/lib
   CLANG_FORMAT_PATH ?= ../../out/llvm_x86_64_linux_work/Release+Asserts/bin
 endif

 LLVM_LDFLAGS := $(LLVM_LIBS) \
                 `$(PNACL_BIN_PATH)/llvm-config --ldflags` \
                 `$(PNACL_BIN_PATH)/llvm-config --system-libs`
 SB_LLVM_LDFLAGS := $(LLVM_LIBS_LIST) \
                    -L$(SB_LLVM_PATH)/lib

 CCACHE := `command -v ccache`
 CXX := CCACHE_CPP2=yes $(CCACHE) $(CLANG_PATH)/clang++
 SB_CXX := CCACHE_CPP2=yes $(CCACHE) $(PNACL_BIN_PATH)/pnacl-clang++
 SB_TRANSLATE := $(PNACL_BIN_PATH)/pnacl-translate

 # Extra warnings that LLVM's build system adds in addition to -Wall.
 LLVM_EXTRA_WARNINGS := -Wcovered-switch-default

 # Use g++ to compile, to check for errors/warnings that clang++ might have
 # missed.  It's unlikely to link, unless LLVM was also built with g++, so the
 # compile_only target should be used.  Note: This ifdef section is deliberately
 # placed here instead of with the other ifdef sections, so that its redefinition
 # of CXX/STDLIB_FLAGS/LLVM_EXTRA_WARNINGS follows their normal definitions.
 ifdef GPLUSPLUS
   CXX := CCACHE_CPP2=yes $(CCACHE) g++
   STDLIB_FLAGS :=
   LLVM_EXTRA_WARNINGS := \
     -Wcast-qual \
     -Wno-comment \
     -Wno-long-long \
     -Wno-maybe-uninitialized \
     -Wno-missing-field-initializers \
     -Wno-unused-parameter \
     -Wwrite-strings
   OBJDIR := $(OBJDIR)+Gplusplus
 endif

 BASE_CXXFLAGS := -std=gnu++11 -Wall -Wextra -Werror -fno-rtti \
   -fno-exceptions $(OPTLEVEL) $(ASSERTIONS) -g -pedantic \
   $(LLVM_EXTRA_WARNINGS) $(CXX_EXTRA)

 CXXFLAGS := $(LLVM_CXXFLAGS) $(BASE_CXXFLAGS) $(CXX_DEFINES) $(HOST_FLAGS) \
   $(STDLIB_FLAGS)
 SB_CXXFLAGS := $(SB_LLVM_CXXFLAGS) $(BASE_CXXFLAGS) $(SB_CXX_DEFINES)

 LDFLAGS := $(HOST_FLAGS) -L$(LIBCXX_INSTALL_PATH)/lib -Wl,--gc-sections \
   $(LD_EXTRA) $(STDLIB_FLAGS)
 # Not specifying -Wl,--gc-sections but instead doing bitcode linking GC w/ LTO.
 SB_LDFLAGS := $(LINKOPTLEVEL) $(LD_EXTRA)

 # List the target-specific source files first, which generally take longer to
 # compile, in the hope of improving parallel build time.
 SRCS = \
   IceAssemblerARM32.cpp \
   IceInstARM32.cpp \
   IceInstMIPS32.cpp \
   IceInstX8632.cpp \
   IceInstX8664.cpp \
   IceTargetLowering.cpp \
   IceTargetLoweringARM32.cpp \
   IceTargetLoweringMIPS32.cpp \
   IceTargetLoweringX8632.cpp \
   IceTargetLoweringX8664.cpp \
   IceAssembler.cpp \
   IceBrowserCompileServer.cpp \
   IceCfg.cpp \
   IceCfgNode.cpp \
   IceClFlags.cpp \
   IceCompiler.cpp \
   IceCompileServer.cpp \
   IceELFObjectWriter.cpp \
   IceELFSection.cpp \
   IceFixups.cpp \
   IceGlobalContext.cpp \
   IceGlobalInits.cpp \
   IceInst.cpp \
   IceIntrinsics.cpp \
   IceLiveness.cpp \
   IceLoopAnalyzer.cpp \
   IceOperand.cpp \
   IceRegAlloc.cpp \
   IceRNG.cpp \
   IceSwitchLowering.cpp \
   IceThreading.cpp \
   IceTimerTree.cpp \
   IceTranslator.cpp \
   IceTypes.cpp \
   main.cpp \
   PNaClTranslator.cpp

 ifndef MINIMAL
   SRCS += \
     IceConverter.cpp \
     IceTypeConverter.cpp
 endif

 OBJS=$(patsubst %.cpp, $(OBJDIR)/%.o, $(SRCS))
 SB_OBJS=$(patsubst %.cpp, $(SB_OBJDIR)/%.o, $(SRCS))

 UNITTEST_SRCS = \
   BitcodeMunge.cpp \
   IceELFSectionTest.cpp \
   IceParseInstsTest.cpp

 # The X86 assembler tests take too long to compile. Given how infrequently the
 # assembler will change, we disable them.
 ifdef CHECK_X86_ASM
   ifndef DEBUG
   $(error Run check-unit with DEBUG=1 lest your machine perish)
   endif
   UNITTEST_SRCS += AssemblerX8632/LowLevel.cpp \
     AssemblerX8632/DataMov.cpp \
     AssemblerX8632/Locked.cpp \
     AssemblerX8632/GPRArith.cpp \
     AssemblerX8632/XmmArith.cpp \
     AssemblerX8632/ControlFlow.cpp \
     AssemblerX8632/Other.cpp \
     AssemblerX8632/X87.cpp \
     AssemblerX8664/LowLevel.cpp \
     AssemblerX8664/DataMov.cpp \
     AssemblerX8664/Locked.cpp \
     AssemblerX8664/GPRArith.cpp \
     AssemblerX8664/XmmArith.cpp \
     AssemblerX8664/ControlFlow.cpp \
     AssemblerX8664/Other.cpp
 endif

 UNITTEST_OBJS = $(patsubst %.cpp, $(OBJDIR)/unittest/%.o, $(UNITTEST_SRCS))
 UNITTEST_LIB_OBJS = $(filter-out $(OBJDIR)/main.o,$(OBJS))

 # Keep all the first target so it's the default.
 all: $(OBJDIR)/pnacl-sz make_symlink runtime

 ifdef TSAN
 sb:
 	@echo "Skipping pnacl-sz.*.nexe: TSAN isn't supported under NaCl."
 else
 sb: $(SB_OBJDIR)/pnacl-sz.x86-32.nexe
 endif

 # SHOW_BUILD_ATTS is an executable that is run to show what build
 # attributes were used to build pnacl-sz.
 SHOW_BUILD_ATTS = $(OBJDIR)/pnacl-sz --build-atts

 # Creates symbolic link so that testing is easier. Also runs
 # pnacl-sz to verify that the defines flags have valid values,
 # as well as describe the corresponding build attributes.
 make_symlink: $(OBJDIR)/pnacl-sz
 	rm -rf pnacl-sz
 	ln -s $(OBJDIR)/pnacl-sz
 	@echo "Build Attributes:"
 	@$(SHOW_BUILD_ATTS)

 .PHONY: all compile_only make_symlink runtime bloat sb docs

 compile_only: $(OBJS)

 $(OBJDIR)/pnacl-sz: $(OBJS)
 	$(CXX) $(LDFLAGS) -o $@ $^ $(LLVM_LDFLAGS) \
           -Wl,-rpath=$(abspath $(LIBCXX_INSTALL_PATH)/lib)

 $(SB_OBJDIR)/pnacl-sz.x86-32.nexe: $(SB_OBJS)
 	$(eval PNACL_SZ_BASE := $(patsubst %.nexe, %, $@))
 	$(SB_CXX) $(SB_LDFLAGS) -o $(PNACL_SZ_BASE).nonfinal.pexe $^ \
           $(SB_LLVM_LDFLAGS)
 	$(SB_TRANSLATE) -arch x86-32 $(PNACL_SZ_BASE).nonfinal.pexe -o $@ \
           --allow-llvm-bitcode-input

 src/IceRegistersARM32.def: pydir/gen_arm32_reg_tables.py
 	python $< > $@

 # TODO(stichnot): Be more precise than "*.h" here and elsewhere.
 $(OBJS): $(OBJDIR)/%.o: src/%.cpp src/*.h src/*.def
 	$(CXX) -c $(CXXFLAGS) $< -o $@

 $(SB_OBJS): $(SB_OBJDIR)/%.o: src/%.cpp src/*.h src/*.def
 	$(SB_CXX) -c $(SB_CXXFLAGS) $< -o $@

 $(OBJDIR)/run_unittests: $(UNITTEST_OBJS) $(UNITTEST_LIB_OBJS)
 	$(CXX) $(GTEST_LIB_PATH) $(LDFLAGS) -o $@ $^ $(LLVM_LDFLAGS) \
           -lgtest -lgtest_main -ldl \
           -Wl,-rpath=$(abspath $(LIBCXX_INSTALL_PATH)/lib)

 $(UNITTEST_OBJS): $(OBJDIR)/unittest/%.o: unittest/%.cpp unittest/*.h \
                   src/*.h src/*.def
 	$(CXX) -c $(CXXFLAGS) \
           -Isrc/ \
           -Iunittest/ \
           -I$(LLVM_SRC_PATH)/utils/unittest/googletest/include \
           -I$(LLVM_SRC_PATH) \
           -DGTEST_HAS_RTTI=0 -DGTEST_USE_OWN_TR1_TUPLE \
           $< -o $@

 $(OBJS): | $(OBJDIR)
 $(SB_OBJS): | $(SB_OBJDIR)

 $(UNITTEST_OBJS): | $(OBJDIR)/unittest $(OBJDIR)/unittest/AssemblerX8632 \
                     $(OBJDIR)/unittest/AssemblerX8664

 $(OBJDIR):
 	@mkdir -p $@
 $(SB_OBJDIR):
 	@mkdir -p $@

 $(OBJDIR)/unittest: $(OBJDIR)
 	@mkdir -p $@

 $(OBJDIR)/unittest/AssemblerX8632: $(OBJDIR)/unittest
 	@mkdir -p $@
 $(OBJDIR)/unittest/AssemblerX8664: $(OBJDIR)/unittest
 	@mkdir -p $@

 RT_SRC := runtime/szrt.c runtime/szrt_ll.ll runtime/szrt_profiler.c \
           runtime/szrt_asm_x8632.s runtime/szrt_asm_x8664.s \
           runtime/szrt_asm_arm32.s
 RT_OBJ := build/runtime/szrt_native_x8632.o build/runtime/szrt_sb_x8632.o \
           build/runtime/szrt_nonsfi_x8632.o \
           build/runtime/szrt_native_x8664.o build/runtime/szrt_sb_x8664.o \
           build/runtime/szrt_nonsfi_x8664.o \
           build/runtime/szrt_native_arm32.o build/runtime/szrt_sb_arm32.o \
           build/runtime/szrt_nonsfi_arm32.o

 runtime: $(RT_OBJ)

 # Use runtime.is.built so that build-runtime.py is invoked only once
 # even in a parallel build.
 .INTERMEDIATE: runtime.is.built
 $(RT_OBJ): runtime.is.built
 runtime.is.built: $(RT_SRC) pydir/build-runtime.py
 	@echo ================ Building Subzero runtime ================
 	./pydir/build-runtime.py -v --pnacl-root $(PNACL_TOOLCHAIN_ROOT)

 check-lit: $(OBJDIR)/pnacl-sz make_symlink
 	PNACL_BIN_PATH=$(PNACL_BIN_PATH) \
 	$(LLVM_SRC_PATH)/utils/lit/lit.py -sv tests_lit \
             $(FORCEASM_LIT_TEST_EXCLUDES) $(FORCEASM_LIT_PARAM)

 ifdef MINIMAL
 check-xtest: $(OBJDIR)/pnacl-sz make_symlink runtime
 	@echo "Crosstests disabled, minimal build"
 else
 check-xtest: $(OBJDIR)/pnacl-sz make_symlink runtime
        # Do all native/sse2 tests, but only test_vector_ops for native/sse4.1.
        # For (slow) sandboxed tests, limit to Om1/sse4.1.
 	./pydir/crosstest_generator.py -v --lit \
           --toolchain-root $(TOOLCHAIN_ROOT) \
           $(FORCEASM_FLAG) \
           $(FORCEASM_XTEST_EXCLUDES) \
           -i x8632,native,sse2 \
           -i x8632,native,sse4.1,test_vector_ops \
           -i x8632,sandbox,sse4.1,Om1 \
           -i x8632,nonsfi,sse2,O2 \
           -i x8664,native,sse2 \
           -i x8664,native,sse4.1,test_vector_ops \
           -i x8664,sandbox,sse4.1,Om1 \
           -i arm32,neon \
           -e arm32,nonsfi \
           -e arm32,neon,test_vector_ops \
           -e arm32,neon,test_select
 	PNACL_BIN_PATH=$(PNACL_BIN_PATH) \
 	$(LLVM_SRC_PATH)/utils/lit/lit.py -sv crosstest/Output
 endif

 check-unit: $(OBJDIR)/run_unittests
 	$(OBJDIR)/run_unittests

 # List the spec2k components in roughly reverse order of runtime, to help with
 # parallel execution speed.
 ALLSPEC := 253.perlbmk 177.mesa 188.ammp 256.bzip2 164.gzip 179.art 183.equake \
            175.vpr 176.gcc 181.mcf 186.crafty 197.parser 254.gap 255.vortex \
            300.twolf 252.eon
 .PHONY: $(ALLSPEC)

 TARGET := x8632
 ifeq ($(TARGET),x8632)
   TARGETFLAG=x8632
   SETUP=SetupGccX8632Opt
   SPEC := -O2 --filetype=obj
 endif
 ifeq ($(TARGET),x8664)
   TARGETFLAG=x8664
   SETUP=SetupGccX8664Opt
   SPEC := -O2 --filetype=obj
 endif
 ifeq ($(TARGET),arm32)
   TARGETFLAG=arm32
   SETUP=SetupGccArmOpt
   SPEC := -O2 --filetype=asm
 endif
 SPECFLAGS :=
 SPECBUILDONLY := false
 %.spec2k: % $(OBJDIR)/pnacl-sz make_symlink runtime
 	./pydir/szbuild_spec2k.py -v --force \
           $(SPECFLAGS) --target=$(TARGETFLAG) $(SPEC) $<
 	$(SPECBUILDONLY) || ( cd ../../../tests/spec2k; \
 	 ./run_all.sh RunTimedBenchmarks $(SETUP) train $< )

 check-spec: $(ALLSPEC:=.spec2k)

 check: check-lit check-unit check-xtest

 check-presubmit presubmit:
 # Make sure clang-format gets run.
 	+make -f Makefile.standalone format
 # Verify MINIMAL build, plus proper usage of REQUIRES in lit tests.
 	+make -f Makefile.standalone \
           MINIMAL=1 check
 # Check that there are no g++ build errors or warnings.
 	+make -f Makefile.standalone \
 	  GPLUSPLUS=1 compile_only
 # Check the x86 assembler unit tests.
 	+make -f Makefile.standalone \
           DEBUG=1 CHECK_X86_ASM=1 check-unit
 # Run lit tests, cross tests, unit tests, and spec2k/x86-32.
 	+make -f Makefile.standalone \
           check check-spec
 # Build spec2k under -Om1/x86-32, to check for liveness errors.
 	+make -f Makefile.standalone \
           SPECFLAGS='-Om1' SPECBUILDONLY=true check-spec
 # Run spec2k for x86-32 without advanced phi lowering.
 	+make -f Makefile.standalone \
           SPECFLAGS='--sz=--phi-edge-split=0' check-spec
 # Run cross tests and lit tests to validate filetype=asm output.
 	+make -f Makefile.standalone \
           FORCEASM=1 check-xtest check-lit
 # Build spec2k for arm32.
 	+make -f Makefile.standalone \
           TARGET=arm32 SPECBUILDONLY=true check-spec
 # Build spec2k under -Om1/arm32.
 	+make -f Makefile.standalone \
           TARGET=arm32 SPECFLAGS='-Om1' SPECBUILDONLY=true check-spec
 # Run a few spec2k tests for arm32 using qemu.
 	+make -f Makefile.standalone \
           TARGET=arm32 ALLSPEC='176.gcc 181.mcf 254.gap' check-spec
 # Provide validation of user awesomeness!
 	echo Success

 FORMAT_BLACKLIST =
 # Add one of the following lines for each source file to ignore.
 FORMAT_BLACKLIST += ! -name IceParseInstsTest.cpp
 FORMAT_BLACKLIST += ! -name IceParseTypesTest.cpp
 FORMAT_BLACKLIST += ! -name assembler_arm.h
 FORMAT_BLACKLIST += ! -name assembler_arm.cc
 format:
 	$(CLANG_FORMAT_PATH)/clang-format -style=LLVM -i \
           `find . -regex '.*\.\(c\|h\|cpp\)' $(FORMAT_BLACKLIST)`

 format-diff:
 	git diff -U0 `git merge-base HEAD master` | \
           PATH=$(PNACL_BIN_PATH):$(PATH) \
           $(LLVM_SRC_PATH)/../clang/tools/clang-format/clang-format-diff.py \
           -p1 -style=LLVM -i

 bloat: make_symlink
 	nm -C -S -l pnacl-sz | \
           bloat/bloat.py --nm-output=/dev/stdin syms > build/pnacl-sz.bloat.json
 	@echo See Subzero size breakdown in bloat/pnacl-sz.bloat.html

 docs:
 	make -C docs -f Makefile.standalone

 clean:
 	rm -rf pnacl-sz *.o $(OBJDIR) $(SB_OBJDIR) build/pnacl-sz.bloat.json

 clean-all: clean
 	rm -rf build/  crosstest/Output/
	# The following variables will likely need to be modified, depending on where
	# and how you built LLVM & Clang. They can be overridden in a command-line
	# invocation of make, like:
	#
	# make LLVM_SRC_PATH=<path> LIBCXX_INSTALL_PATH=<path> CLANG_PATH=<path> \
	# PNACL_BIN_PATH=<path> ...
	#

	# LLVM_SRC_PATH is the path to the root of the checked out source code. This
	# directory should contain the configure script, the include/ and lib/
	# directories of LLVM, Clang in tools/clang/, etc.
	# Alternatively, if you're building vs. a binary download of LLVM, then
	# LLVM_SRC_PATH can point to the main untarred directory.
	LLVM_SRC_PATH ?= ../llvm

	# The x86-32-specific sandboxed translator directory.
	# It holds sandboxed versions of libraries and binaries.
	SB_LLVM_PATH ?= $(shell readlink -e \
	../../out/sandboxed_translators_work/translator-i686/llvm-sb/Release)

	# NACL_ROOT is the root of the native client repository.
	NACL_ROOT ?= $(shell python -c "import sys; sys.path.insert(0, 'pydir'); \
	import utils; print utils.FindBaseNaCl()")

	# TOOLCHAIN_ROOT is the location of NaCl/PNaCl toolchains and other
	# tools like qemu.
	TOOLCHAIN_ROOT ?= $(shell readlink -e $(NACL_ROOT)/toolchain/linux_x86)

	# PNACL_TOOLCHAIN_ROOT is the location of the PNaCl toolchain.
	# This is used as the default root for finding binutils, libcxx, etc.
	PNACL_TOOLCHAIN_ROOT ?= $(shell readlink -e $(TOOLCHAIN_ROOT)/pnacl_newlib_raw)

	# The location of PNaCl tools (e.g., binutils objdump, pnacl-clang++, etc.).
	PNACL_BIN_PATH ?= $(shell readlink -e $(PNACL_TOOLCHAIN_ROOT)/bin)

	# Hack to auto-detect autoconf versus cmake build of LLVM. If the LLVM tools
	# were dynamically linked with something like libLLVM-3.7svn.so, it is an
	# autoconf build, otherwise it is a cmake build. AUTOCONF is set to 0 for
	# cmake, nonzero for autoconf.
	AUTOCONF ?= $(shell ldd $(PNACL_BIN_PATH)/opt \| grep -c libLLVM-)

	# CLANG_PATH is the location of the clang compiler to use for building
	# the host binaries.
	CLANG_PATH ?= $(shell readlink -e \
	$(NACL_ROOT)/../third_party/llvm-build/Release+Asserts/bin)

	# LIBCXX_INSTALL_PATH is the directory where libc++ is located. It should
	# contain header files and corresponding libraries. This is used for
	# building the host binaries in conjuction with clang.
	LIBCXX_INSTALL_PATH ?= $(PNACL_TOOLCHAIN_ROOT)
	STDLIB_FLAGS := -stdlib=libc++ -I$(LIBCXX_INSTALL_PATH)/include/c++/v1

	HOST_ARCH ?= x86_64
	ifeq ($(HOST_ARCH),x86_64)
	HOST_FLAGS = -m64
	else
	ifeq ($(HOST_ARCH),x86)
	HOST_FLAGS = -m32
	endif
	endif

	ifdef DEBUG
	OBJDIR = build/Debug
	OPTLEVEL = -O0
	LINKOPTLEVEL = -O0
	else
	OBJDIR = build/Release
	OPTLEVEL = -O2 -ffunction-sections -fdata-sections
	LINKOPTLEVEL = -O2
	endif

	# The list of CXX defines that are dependent on build parameters.
	BASE_CXX_DEFINES =
	CXX_EXTRA =
	LD_EXTRA =

	ifdef MINIMAL
	NOASSERT = 1
	OBJDIR := $(OBJDIR)+Min
	BASE_CXX_DEFINES += -DALLOW_DUMP=0 -DALLOW_LLVM_CL=0 -DALLOW_LLVM_IR=0 \
	-DALLOW_LLVM_IR_AS_INPUT=0 -DALLOW_MINIMAL_BUILD=1
	else
	BASE_CXX_DEFINES += -DALLOW_DUMP=1 -DALLOW_LLVM_CL=1 -DALLOW_LLVM_IR=1 \
	-DALLOW_LLVM_IR_AS_INPUT=1 -DALLOW_MINIMAL_BUILD=0
	endif

	SB_CXX_DEFINES := $(BASE_CXX_DEFINES) -DPNACL_BROWSER_TRANSLATOR=1
	CXX_DEFINES := $(BASE_CXX_DEFINES) -DPNACL_BROWSER_TRANSLATOR=0

	ifdef NOASSERT
	ASSERTIONS = -DNDEBUG
	else
	ASSERTIONS =
	OBJDIR := $(OBJDIR)+Asserts
	endif

	ifdef UBSAN
	OBJDIR := $(OBJDIR)+UBSan
	CXX_EXTRA += -fsanitize=undefined -fno-sanitize=vptr \
	-fno-sanitize=nonnull-attribute
	LD_EXTRA += -fsanitize=undefined
	endif

	ifdef UBSAN_TRAP
	OBJDIR := $(OBJDIR)+UBSan_Trap
	CXX_EXTRA += -fsanitize=undefined-trap -fsanitize-undefined-trap-on-error \
	-fno-sanitize=vptr -fno-sanitize=nonnull-attribute
	LD_EXTRA += -fsanitize=undefined-trap
	endif

	ifdef TSAN
	OBJDIR := $(OBJDIR)+TSan
	CXX_EXTRA += -fsanitize=thread
	LD_EXTRA += -fsanitize=thread
	endif

	ifdef ASAN
	OBJDIR := $(OBJDIR)+ASan
	CXX_EXTRA += -fsanitize=address
	LD_EXTRA += -fsanitize=address
	endif

	ifdef MSAN
	# TODO(ascull): this has an as yet undiagnosed uninitialized memory access
	OBJDIR := $(OBJDIR)+MSan
	CXX_EXTRA += -fsanitize=memory
	LD_EXTRA += -fsanitize=memory
	endif

	ifdef FORCEASM
	FORCEASM_FLAG = --filetype=asm
	# With --filetype=asm and --sandbox, the llvm-mc assembler emits the lock and
	# 16-bit prefixes in the "wrong" order, causing the validator to reject the
	# resulting nexe. So we just disable those tests for now.
	FORCEASM_XTEST_EXCLUDES = -e x8632,sandbox,test_sync_atomic
	FORCEASM_LIT_PARAM = --param=FORCEASM
	# x86 sandboxing lit tests are disabled because llvm-mc uses different
	# relocations for pushing return addresses onto the stack.
	# TODO(jpp): fix this.
	FORCEASM_LIT_TEST_EXCLUDES = --filter='^(?!./x86/sandboxing.ll).'
	else
	FORCEASM_FLAG =
	FORCEASM_XTEST_EXCLUDES =
	FORCEASM_LIT_PARAM =
	FORCEASM_LIT_TEST_EXCLUDES =
	endif

	SB_OBJDIR := $(OBJDIR)+Sandboxed

	$(info -----------------------------------------------)
	$(info Using LLVM_SRC_PATH = $(LLVM_SRC_PATH))
	$(info Using SB_LLVM_PATH = $(SB_LLVM_PATH))
	$(info Using NACL_ROOT = $(NACL_ROOT))
	$(info Using TOOLCHAIN_ROOT = $(TOOLCHAIN_ROOT))
	$(info Using PNACL_TOOLCHAIN_ROOT = $(PNACL_TOOLCHAIN_ROOT))
	$(info Using PNACL_BIN_PATH = $(PNACL_BIN_PATH))
	$(info Using CLANG_PATH = $(CLANG_PATH))
	$(info Using LIBCXX_INSTALL_PATH = $(LIBCXX_INSTALL_PATH))
	$(info Using HOST_ARCH = $(HOST_ARCH))
	$(info -----------------------------------------------)

	LLVM_CXXFLAGS := `$(PNACL_BIN_PATH)/llvm-config --cxxflags`
	SB_LLVM_CXXFLAGS := $(LLVM_CXXFLAGS)

	# Listing specific libraries that are needed for pnacl-sz
	# and the unittests, since we build "tools-only" for the
	# sandboxed_translators (which doesn't include every library
	# listed by llvm-config).

	LLVM_LIBS_LIST := -lLLVMIRReader -lLLVMBitReader -lLLVMNaClBitTestUtils \
	-lLLVMNaClBitReader -lLLVMNaClBitAnalysis -lLLVMNaClBitWriter \
	-lLLVMAsmParser -lLLVMNaClAnalysis -lLLVMCore -lLLVMSupport

	ifeq ($(AUTOCONF), 0)
	# LLVM cmake build
	LLVM_LIBS := $(LLVM_LIBS_LIST)
	# For the cmake build, the gtest libs end up in the same place as the LLVM
	# libs, so no "-L..." arg is needed.
	GTEST_LIB_PATH ?=
	CLANG_FORMAT_PATH ?= $(PNACL_BIN_PATH)
	else
	# LLVM autoconf build
	LLVM_LIBS := -lLLVM-3.7svn
	GTEST_LIB_PATH ?= -L../../out/llvm_x86_64_linux_work/Release+Asserts/lib
	CLANG_FORMAT_PATH ?= ../../out/llvm_x86_64_linux_work/Release+Asserts/bin
	endif

	LLVM_LDFLAGS := $(LLVM_LIBS) \
	`$(PNACL_BIN_PATH)/llvm-config --ldflags` \
	`$(PNACL_BIN_PATH)/llvm-config --system-libs`
	SB_LLVM_LDFLAGS := $(LLVM_LIBS_LIST) \
	-L$(SB_LLVM_PATH)/lib

	CCACHE := `command -v ccache`
	CXX := CCACHE_CPP2=yes $(CCACHE) $(CLANG_PATH)/clang++
	SB_CXX := CCACHE_CPP2=yes $(CCACHE) $(PNACL_BIN_PATH)/pnacl-clang++
	SB_TRANSLATE := $(PNACL_BIN_PATH)/pnacl-translate

	# Extra warnings that LLVM's build system adds in addition to -Wall.
	LLVM_EXTRA_WARNINGS := -Wcovered-switch-default

	# Use g++ to compile, to check for errors/warnings that clang++ might have
	# missed. It's unlikely to link, unless LLVM was also built with g++, so the
	# compile_only target should be used. Note: This ifdef section is deliberately
	# placed here instead of with the other ifdef sections, so that its redefinition
	# of CXX/STDLIB_FLAGS/LLVM_EXTRA_WARNINGS follows their normal definitions.
	ifdef GPLUSPLUS
	CXX := CCACHE_CPP2=yes $(CCACHE) g++
	STDLIB_FLAGS :=
	LLVM_EXTRA_WARNINGS := \
	-Wcast-qual \
	-Wno-comment \
	-Wno-long-long \
	-Wno-maybe-uninitialized \
	-Wno-missing-field-initializers \
	-Wno-unused-parameter \
	-Wwrite-strings
	OBJDIR := $(OBJDIR)+Gplusplus
	endif

	BASE_CXXFLAGS := -std=gnu++11 -Wall -Wextra -Werror -fno-rtti \
	-fno-exceptions $(OPTLEVEL) $(ASSERTIONS) -g -pedantic \
	$(LLVM_EXTRA_WARNINGS) $(CXX_EXTRA)

	CXXFLAGS := $(LLVM_CXXFLAGS) $(BASE_CXXFLAGS) $(CXX_DEFINES) $(HOST_FLAGS) \
	$(STDLIB_FLAGS)
	SB_CXXFLAGS := $(SB_LLVM_CXXFLAGS) $(BASE_CXXFLAGS) $(SB_CXX_DEFINES)

	LDFLAGS := $(HOST_FLAGS) -L$(LIBCXX_INSTALL_PATH)/lib -Wl,--gc-sections \
	$(LD_EXTRA) $(STDLIB_FLAGS)
	# Not specifying -Wl,--gc-sections but instead doing bitcode linking GC w/ LTO.
	SB_LDFLAGS := $(LINKOPTLEVEL) $(LD_EXTRA)

	# List the target-specific source files first, which generally take longer to
	# compile, in the hope of improving parallel build time.
	SRCS = \
	IceAssemblerARM32.cpp \
	IceInstARM32.cpp \
	IceInstMIPS32.cpp \
	IceInstX8632.cpp \
	IceInstX8664.cpp \
	IceTargetLowering.cpp \
	IceTargetLoweringARM32.cpp \
	IceTargetLoweringMIPS32.cpp \
	IceTargetLoweringX8632.cpp \
	IceTargetLoweringX8664.cpp \
	IceAssembler.cpp \
	IceBrowserCompileServer.cpp \
	IceCfg.cpp \
	IceCfgNode.cpp \
	IceClFlags.cpp \
	IceCompiler.cpp \
	IceCompileServer.cpp \
	IceELFObjectWriter.cpp \
	IceELFSection.cpp \
	IceFixups.cpp \
	IceGlobalContext.cpp \
	IceGlobalInits.cpp \
	IceInst.cpp \
	IceIntrinsics.cpp \
	IceLiveness.cpp \
	IceLoopAnalyzer.cpp \
	IceOperand.cpp \
	IceRegAlloc.cpp \
	IceRNG.cpp \
	IceSwitchLowering.cpp \
	IceThreading.cpp \
	IceTimerTree.cpp \
	IceTranslator.cpp \
	IceTypes.cpp \
	main.cpp \
	PNaClTranslator.cpp

	ifndef MINIMAL
	SRCS += \
	IceConverter.cpp \
	IceTypeConverter.cpp
	endif

	OBJS=$(patsubst %.cpp, $(OBJDIR)/%.o, $(SRCS))
	SB_OBJS=$(patsubst %.cpp, $(SB_OBJDIR)/%.o, $(SRCS))

	UNITTEST_SRCS = \
	BitcodeMunge.cpp \
	IceELFSectionTest.cpp \
	IceParseInstsTest.cpp

	# The X86 assembler tests take too long to compile. Given how infrequently the
	# assembler will change, we disable them.
	ifdef CHECK_X86_ASM
	ifndef DEBUG
	$(error Run check-unit with DEBUG=1 lest your machine perish)
	endif
	UNITTEST_SRCS += AssemblerX8632/LowLevel.cpp \
	AssemblerX8632/DataMov.cpp \
	AssemblerX8632/Locked.cpp \
	AssemblerX8632/GPRArith.cpp \
	AssemblerX8632/XmmArith.cpp \
	AssemblerX8632/ControlFlow.cpp \
	AssemblerX8632/Other.cpp \
	AssemblerX8632/X87.cpp \
	AssemblerX8664/LowLevel.cpp \
	AssemblerX8664/DataMov.cpp \
	AssemblerX8664/Locked.cpp \
	AssemblerX8664/GPRArith.cpp \
	AssemblerX8664/XmmArith.cpp \
	AssemblerX8664/ControlFlow.cpp \
	AssemblerX8664/Other.cpp
	endif

	UNITTEST_OBJS = $(patsubst %.cpp, $(OBJDIR)/unittest/%.o, $(UNITTEST_SRCS))
	UNITTEST_LIB_OBJS = $(filter-out $(OBJDIR)/main.o,$(OBJS))

	# Keep all the first target so it's the default.
	all: $(OBJDIR)/pnacl-sz make_symlink runtime

	ifdef TSAN
	sb:
	@echo "Skipping pnacl-sz.*.nexe: TSAN isn't supported under NaCl."
	else
	sb: $(SB_OBJDIR)/pnacl-sz.x86-32.nexe
	endif

	# SHOW_BUILD_ATTS is an executable that is run to show what build
	# attributes were used to build pnacl-sz.
	SHOW_BUILD_ATTS = $(OBJDIR)/pnacl-sz --build-atts

	# Creates symbolic link so that testing is easier. Also runs
	# pnacl-sz to verify that the defines flags have valid values,
	# as well as describe the corresponding build attributes.
	make_symlink: $(OBJDIR)/pnacl-sz
	rm -rf pnacl-sz
	ln -s $(OBJDIR)/pnacl-sz
	@echo "Build Attributes:"
	@$(SHOW_BUILD_ATTS)

	.PHONY: all compile_only make_symlink runtime bloat sb docs

	compile_only: $(OBJS)

	$(OBJDIR)/pnacl-sz: $(OBJS)
	$(CXX) $(LDFLAGS) -o $@ $^ $(LLVM_LDFLAGS) \
	-Wl,-rpath=$(abspath $(LIBCXX_INSTALL_PATH)/lib)

	$(SB_OBJDIR)/pnacl-sz.x86-32.nexe: $(SB_OBJS)
	$(eval PNACL_SZ_BASE := $(patsubst %.nexe, %, $@))
	$(SB_CXX) $(SB_LDFLAGS) -o $(PNACL_SZ_BASE).nonfinal.pexe $^ \
	$(SB_LLVM_LDFLAGS)
	$(SB_TRANSLATE) -arch x86-32 $(PNACL_SZ_BASE).nonfinal.pexe -o $@ \
	--allow-llvm-bitcode-input

	src/IceRegistersARM32.def: pydir/gen_arm32_reg_tables.py
	python $< > $@

	# TODO(stichnot): Be more precise than "*.h" here and elsewhere.
	$(OBJS): $(OBJDIR)/%.o: src/%.cpp src/.h src/.def
	$(CXX) -c $(CXXFLAGS) $< -o $@

	$(SB_OBJS): $(SB_OBJDIR)/%.o: src/%.cpp src/.h src/.def
	$(SB_CXX) -c $(SB_CXXFLAGS) $< -o $@

	$(OBJDIR)/run_unittests: $(UNITTEST_OBJS) $(UNITTEST_LIB_OBJS)
	$(CXX) $(GTEST_LIB_PATH) $(LDFLAGS) -o $@ $^ $(LLVM_LDFLAGS) \
	-lgtest -lgtest_main -ldl \
	-Wl,-rpath=$(abspath $(LIBCXX_INSTALL_PATH)/lib)

	$(UNITTEST_OBJS): $(OBJDIR)/unittest/%.o: unittest/%.cpp unittest/*.h \
	src/.h src/.def
	$(CXX) -c $(CXXFLAGS) \
	-Isrc/ \
	-Iunittest/ \
	-I$(LLVM_SRC_PATH)/utils/unittest/googletest/include \
	-I$(LLVM_SRC_PATH) \
	-DGTEST_HAS_RTTI=0 -DGTEST_USE_OWN_TR1_TUPLE \
	$< -o $@

	$(OBJS): \| $(OBJDIR)
	$(SB_OBJS): \| $(SB_OBJDIR)

	$(UNITTEST_OBJS): \| $(OBJDIR)/unittest $(OBJDIR)/unittest/AssemblerX8632 \
	$(OBJDIR)/unittest/AssemblerX8664

	$(OBJDIR):
	@mkdir -p $@
	$(SB_OBJDIR):
	@mkdir -p $@

	$(OBJDIR)/unittest: $(OBJDIR)
	@mkdir -p $@

	$(OBJDIR)/unittest/AssemblerX8632: $(OBJDIR)/unittest
	@mkdir -p $@
	$(OBJDIR)/unittest/AssemblerX8664: $(OBJDIR)/unittest
	@mkdir -p $@

	RT_SRC := runtime/szrt.c runtime/szrt_ll.ll runtime/szrt_profiler.c \
	runtime/szrt_asm_x8632.s runtime/szrt_asm_x8664.s \
	runtime/szrt_asm_arm32.s
	RT_OBJ := build/runtime/szrt_native_x8632.o build/runtime/szrt_sb_x8632.o \
	build/runtime/szrt_nonsfi_x8632.o \
	build/runtime/szrt_native_x8664.o build/runtime/szrt_sb_x8664.o \
	build/runtime/szrt_nonsfi_x8664.o \
	build/runtime/szrt_native_arm32.o build/runtime/szrt_sb_arm32.o \
	build/runtime/szrt_nonsfi_arm32.o

	runtime: $(RT_OBJ)

	# Use runtime.is.built so that build-runtime.py is invoked only once
	# even in a parallel build.
	.INTERMEDIATE: runtime.is.built
	$(RT_OBJ): runtime.is.built
	runtime.is.built: $(RT_SRC) pydir/build-runtime.py
	@echo ================ Building Subzero runtime ================
	./pydir/build-runtime.py -v --pnacl-root $(PNACL_TOOLCHAIN_ROOT)

	check-lit: $(OBJDIR)/pnacl-sz make_symlink
	PNACL_BIN_PATH=$(PNACL_BIN_PATH) \
	$(LLVM_SRC_PATH)/utils/lit/lit.py -sv tests_lit \
	$(FORCEASM_LIT_TEST_EXCLUDES) $(FORCEASM_LIT_PARAM)

	ifdef MINIMAL
	check-xtest: $(OBJDIR)/pnacl-sz make_symlink runtime
	@echo "Crosstests disabled, minimal build"
	else
	check-xtest: $(OBJDIR)/pnacl-sz make_symlink runtime
	# Do all native/sse2 tests, but only test_vector_ops for native/sse4.1.
	# For (slow) sandboxed tests, limit to Om1/sse4.1.
	./pydir/crosstest_generator.py -v --lit \
	--toolchain-root $(TOOLCHAIN_ROOT) \
	$(FORCEASM_FLAG) \
	$(FORCEASM_XTEST_EXCLUDES) \
	-i x8632,native,sse2 \
	-i x8632,native,sse4.1,test_vector_ops \
	-i x8632,sandbox,sse4.1,Om1 \
	-i x8632,nonsfi,sse2,O2 \
	-i x8664,native,sse2 \
	-i x8664,native,sse4.1,test_vector_ops \
	-i x8664,sandbox,sse4.1,Om1 \
	-i arm32,neon \
	-e arm32,nonsfi \
	-e arm32,neon,test_vector_ops \
	-e arm32,neon,test_select
	PNACL_BIN_PATH=$(PNACL_BIN_PATH) \
	$(LLVM_SRC_PATH)/utils/lit/lit.py -sv crosstest/Output
	endif

	check-unit: $(OBJDIR)/run_unittests
	$(OBJDIR)/run_unittests

	# List the spec2k components in roughly reverse order of runtime, to help with
	# parallel execution speed.
	ALLSPEC := 253.perlbmk 177.mesa 188.ammp 256.bzip2 164.gzip 179.art 183.equake \
	175.vpr 176.gcc 181.mcf 186.crafty 197.parser 254.gap 255.vortex \
	300.twolf 252.eon
	.PHONY: $(ALLSPEC)

	TARGET := x8632
	ifeq ($(TARGET),x8632)
	TARGETFLAG=x8632
	SETUP=SetupGccX8632Opt
	SPEC := -O2 --filetype=obj
	endif
	ifeq ($(TARGET),x8664)
	TARGETFLAG=x8664
	SETUP=SetupGccX8664Opt
	SPEC := -O2 --filetype=obj
	endif
	ifeq ($(TARGET),arm32)
	TARGETFLAG=arm32
	SETUP=SetupGccArmOpt
	SPEC := -O2 --filetype=asm
	endif
	SPECFLAGS :=
	SPECBUILDONLY := false
	%.spec2k: % $(OBJDIR)/pnacl-sz make_symlink runtime
	./pydir/szbuild_spec2k.py -v --force \
	$(SPECFLAGS) --target=$(TARGETFLAG) $(SPEC) $<
	$(SPECBUILDONLY) \|\| ( cd ../../../tests/spec2k; \
	./run_all.sh RunTimedBenchmarks $(SETUP) train $< )

	check-spec: $(ALLSPEC:=.spec2k)

	check: check-lit check-unit check-xtest

	check-presubmit presubmit:
	# Make sure clang-format gets run.
	+make -f Makefile.standalone format
	# Verify MINIMAL build, plus proper usage of REQUIRES in lit tests.
	+make -f Makefile.standalone \
	MINIMAL=1 check
	# Check that there are no g++ build errors or warnings.
	+make -f Makefile.standalone \
	GPLUSPLUS=1 compile_only
	# Check the x86 assembler unit tests.
	+make -f Makefile.standalone \
	DEBUG=1 CHECK_X86_ASM=1 check-unit
	# Run lit tests, cross tests, unit tests, and spec2k/x86-32.
	+make -f Makefile.standalone \
	check check-spec
	# Build spec2k under -Om1/x86-32, to check for liveness errors.
	+make -f Makefile.standalone \
	SPECFLAGS='-Om1' SPECBUILDONLY=true check-spec
	# Run spec2k for x86-32 without advanced phi lowering.
	+make -f Makefile.standalone \
	SPECFLAGS='--sz=--phi-edge-split=0' check-spec
	# Run cross tests and lit tests to validate filetype=asm output.
	+make -f Makefile.standalone \
	FORCEASM=1 check-xtest check-lit
	# Build spec2k for arm32.
	+make -f Makefile.standalone \
	TARGET=arm32 SPECBUILDONLY=true check-spec
	# Build spec2k under -Om1/arm32.
	+make -f Makefile.standalone \
	TARGET=arm32 SPECFLAGS='-Om1' SPECBUILDONLY=true check-spec
	# Run a few spec2k tests for arm32 using qemu.
	+make -f Makefile.standalone \
	TARGET=arm32 ALLSPEC='176.gcc 181.mcf 254.gap' check-spec
	# Provide validation of user awesomeness!
	echo Success

	FORMAT_BLACKLIST =
	# Add one of the following lines for each source file to ignore.
	FORMAT_BLACKLIST += ! -name IceParseInstsTest.cpp
	FORMAT_BLACKLIST += ! -name IceParseTypesTest.cpp
	FORMAT_BLACKLIST += ! -name assembler_arm.h
	FORMAT_BLACKLIST += ! -name assembler_arm.cc
	format:
	$(CLANG_FORMAT_PATH)/clang-format -style=LLVM -i \
	`find . -regex '.*\.\(c\\|h\\|cpp\)' $(FORMAT_BLACKLIST)`

	format-diff:
	git diff -U0 `git merge-base HEAD master` \| \
	PATH=$(PNACL_BIN_PATH):$(PATH) \
	$(LLVM_SRC_PATH)/../clang/tools/clang-format/clang-format-diff.py \
	-p1 -style=LLVM -i

	bloat: make_symlink
	nm -C -S -l pnacl-sz \| \
	bloat/bloat.py --nm-output=/dev/stdin syms > build/pnacl-sz.bloat.json
	@echo See Subzero size breakdown in bloat/pnacl-sz.bloat.html

	docs:
	make -C docs -f Makefile.standalone

	clean:
	rm -rf pnacl-sz *.o $(OBJDIR) $(SB_OBJDIR) build/pnacl-sz.bloat.json

	clean-all: clean
	rm -rf build/ crosstest/Output/