Makefile

# 'make' builds libHalide.a, the internal test suite, and runs the internal test suite
# 'make run_tests' builds and runs all the end-to-end tests in the test subdirectory
# 'make {error,performance}_foo' builds and runs test/{...}/foo.cpp for any
#     cpp file in the corresponding subdirectoy of the test folder
# 'make test_foo' builds and runs test/correctness/foo.cpp for any
#     cpp file in the correctness/ subdirectoy of the test folder
# 'make test_apps' checks some of the apps build and run (but does not check their output)
# 'make time_compilation_tests' records the compile time for each test module into a csv file.
#     For correctness and performance tests this include halide build time and run time. For
#     the tests in test/generator/ this times only the halide build time.

SHELL = bash
CXX ?= g++
LLVM_CONFIG ?= llvm-config
LLVM_COMPONENTS= $(shell $(LLVM_CONFIG) --components)
LLVM_VERSION = $(shell $(LLVM_CONFIG) --version | cut -b 1-3)
LLVM_FULL_VERSION = $(shell $(LLVM_CONFIG) --version)
CLANG ?= clang
CLANG_VERSION = $(shell $(CLANG) --version)
LLVM_BINDIR = $(shell $(LLVM_CONFIG) --bindir)
LLVM_LIBDIR = $(shell $(LLVM_CONFIG) --libdir)
LLVM_AS = $(LLVM_BINDIR)/llvm-as
LLVM_NM = $(LLVM_BINDIR)/llvm-nm
LLVM_CXX_FLAGS = $(filter-out -O% -g -fomit-frame-pointer -Wcovered-switch-default, $(shell $(LLVM_CONFIG) --cxxflags))
OPTIMIZE ?= -O3
# This can be set to -m32 to get a 32-bit build of Halide on a 64-bit system.
# (Normally this can be done via pointing to a compiler that defaults to 32-bits,
#  but that is difficult in some testing situations because it requires having
#  such a compiler handy. One still needs to have 32-bit llvm libraries, etc.)
BUILD_BIT_SIZE ?=
TEST_CXX_FLAGS ?= $(BUILD_BIT_SIZE) -g -fno-omit-frame-pointer -fno-rtti
GENGEN_DEPS ?=$(BIN_DIR)/libHalide.so include/Halide.h tools/GenGen.cpp

LLVM_VERSION_TIMES_10 = $(shell $(LLVM_CONFIG) --version | cut -b 1,3)
LLVM_CXX_FLAGS += -DLLVM_VERSION=$(LLVM_VERSION_TIMES_10)

# All WITH_* flags are either empty or not-empty. They do not behave
# like true/false values in most languages.  To turn one off, either
# edit this file, add "WITH_FOO=" (no assigned value) to the make
# line, or define an environment variable WITH_FOO that has an empty
# value.
WITH_NATIVE_CLIENT ?= $(findstring nacltransforms, $(LLVM_COMPONENTS))
WITH_X86 ?= $(findstring x86, $(LLVM_COMPONENTS))
WITH_ARM ?= $(findstring arm, $(LLVM_COMPONENTS))
WITH_MIPS ?= $(findstring mips, $(LLVM_COMPONENTS))
WITH_AARCH64 ?= $(findstring aarch64, $(LLVM_COMPONENTS))
WITH_OPENCL ?= not-empty
WITH_OPENGL ?= not-empty
WITH_INTROSPECTION ?= not-empty
WITH_EXCEPTIONS ?=

# If HL_TARGET or HL_JIT_TARGET aren't set, use host
HL_TARGET ?= host
HL_JIT_TARGET ?= host

# turn off PTX for llvm 3.2
ifneq ($(LLVM_VERSION), 3.2)
WITH_PTX ?= $(findstring nvptx, $(LLVM_COMPONENTS))
endif

# turn on c++11 for llvm 3.5+
CXX11 ?= $(findstring $(LLVM_VERSION_TIMES_10), 35 36 37 38 39 40)

ifneq ($(CXX11),)
LLVM_CXX_FLAGS += -std=c++11
TEST_CXX_FLAGS += -std=c++11
endif

NATIVE_CLIENT_CXX_FLAGS = $(if $(WITH_NATIVE_CLIENT), -DWITH_NATIVE_CLIENT=1, )
NATIVE_CLIENT_LLVM_CONFIG_LIB = $(if $(WITH_NATIVE_CLIENT), nacltransforms, )

X86_CXX_FLAGS=$(if $(WITH_X86), -DWITH_X86=1, )
X86_LLVM_CONFIG_LIB=$(if $(WITH_X86), x86, )

ARM_CXX_FLAGS=$(if $(WITH_ARM), -DWITH_ARM=1, )
ARM_LLVM_CONFIG_LIB=$(if $(WITH_ARM), arm, )

MIPS_CXX_FLAGS=$(if $(WITH_MIPS), -DWITH_MIPS=1, )
MIPS_LLVM_CONFIG_LIB=$(if $(WITH_MIPS), mips, )

PTX_CXX_FLAGS=$(if $(WITH_PTX), -DWITH_PTX=1, )
PTX_LLVM_CONFIG_LIB=$(if $(WITH_PTX), nvptx, )
PTX_DEVICE_INITIAL_MODULES=$(if $(WITH_PTX), libdevice.compute_20.10.bc libdevice.compute_30.10.bc libdevice.compute_35.10.bc, )

OPENCL_CXX_FLAGS=$(if $(WITH_OPENCL), -DWITH_OPENCL=1, )
OPENCL_LLVM_CONFIG_LIB=$(if $(WITH_OPENCL), , )

OPENGL_CXX_FLAGS=$(if $(WITH_OPENGL), -DWITH_OPENGL=1, )

AARCH64_CXX_FLAGS=$(if $(WITH_AARCH64), -DWITH_AARCH64=1, )
AARCH64_LLVM_CONFIG_LIB=$(if $(WITH_AARCH64), aarch64, )

INTROSPECTION_CXX_FLAGS=$(if $(WITH_INTROSPECTION), -DWITH_INTROSPECTION, )
EXCEPTIONS_CXX_FLAGS=$(if $(WITH_EXCEPTIONS), -DWITH_EXCEPTIONS, )

CXX_WARNING_FLAGS = -Wall -Werror -Wno-unused-function -Wcast-qual
CXX_FLAGS = $(CXX_WARNING_FLAGS) -fno-rtti -Woverloaded-virtual -fPIC $(OPTIMIZE) -fno-omit-frame-pointer -DCOMPILING_HALIDE $(BUILD_BIT_SIZE)
CXX_FLAGS += $(LLVM_CXX_FLAGS)
CXX_FLAGS += $(NATIVE_CLIENT_CXX_FLAGS)
CXX_FLAGS += $(PTX_CXX_FLAGS)
CXX_FLAGS += $(ARM_CXX_FLAGS)
CXX_FLAGS += $(AARCH64_CXX_FLAGS)
CXX_FLAGS += $(X86_CXX_FLAGS)
CXX_FLAGS += $(OPENCL_CXX_FLAGS)
CXX_FLAGS += $(OPENGL_CXX_FLAGS)
CXX_FLAGS += $(MIPS_CXX_FLAGS)
CXX_FLAGS += $(INTROSPECTION_CXX_FLAGS)
CXX_FLAGS += $(EXCEPTIONS_CXX_FLAGS)

LLVM_35_OR_OLDER = $(findstring $(LLVM_VERSION_TIMES_10), 32 33 34 35)
ifneq ($(LLVM_35_OR_OLDER), )
LLVM_OLD_JIT_COMPONENT = jit
endif

print-%:
	@echo '$*=$($*)'

ifeq ($(USE_LLVM_SHARED_LIB), )
LLVM_STATIC_LIBS = -L $(LLVM_LIBDIR) $(shell $(LLVM_CONFIG) --libs bitwriter bitreader linker ipo mcjit $(LLVM_OLD_JIT_COMPONENT) $(X86_LLVM_CONFIG_LIB) $(ARM_LLVM_CONFIG_LIB) $(OPENCL_LLVM_CONFIG_LIB) $(NATIVE_CLIENT_LLVM_CONFIG_LIB) $(PTX_LLVM_CONFIG_LIB) $(AARCH64_LLVM_CONFIG_LIB) $(MIPS_LLVM_CONFIG_LIB))
LLVM_SHARED_LIBS =
else
LLVM_STATIC_LIBS =
LLVM_SHARED_LIBS = -L $(LLVM_LIBDIR) -lLLVM-$(LLVM_FULL_VERSION)
endif

LLVM_34_OR_OLDER = $(findstring $(LLVM_VERSION_TIMES_10), 32 33 34)
ifneq ($(LLVM_34_OR_OLDER), )
LLVM_LDFLAGS = $(shell $(LLVM_CONFIG) --ldflags)
else
LLVM_LDFLAGS = $(shell $(LLVM_CONFIG) --ldflags --system-libs)
endif

UNAME = $(shell uname)

OPENGL_LDFLAGS =
ifneq ($(WITH_OPENGL), )
ifeq ($(UNAME), Linux)
OPENGL_LDFLAGS = -lX11 -lGL
endif
ifeq ($(UNAME), Darwin)
OPENGL_LDFLAGS = -framework OpenGL -framework AGL
endif
endif

ifneq ($(WITH_PTX), )
ifneq (,$(findstring ptx,$(HL_TARGET)))
TEST_PTX = 1
endif
ifneq (,$(findstring cuda,$(HL_TARGET)))
TEST_PTX = 1
endif
endif

ifneq ($(WITH_OPENCL), )
ifneq (,$(findstring opencl,$(HL_TARGET)))
TEST_OPENCL = 1
endif
endif

TEST_CXX_FLAGS ?= $(BUILD_BIT_SIZE) -g -fno-omit-frame-pointer -fno-rtti
ifeq ($(UNAME), Linux)
TEST_CXX_FLAGS += -rdynamic
ifneq ($(TEST_PTX), )
STATIC_TEST_LIBS ?= -L/usr/lib/nvidia-current -lcuda
endif
ifneq ($(TEST_OPENCL), )
STATIC_TEST_LIBS ?= -lOpenCL
endif
HOST_OS=linux
endif

ifeq ($(UNAME), Darwin)
# Someone with an osx box with cuda installed please fix the line below
ifneq ($(TEST_PTX), )
STATIC_TEST_LIBS ?= -L/usr/local/cuda/lib -lcuda
endif
ifneq ($(TEST_OPENCL), )
STATIC_TEST_LIBS ?= -framework OpenCL
endif
HOST_OS=os_x
endif

ifneq ($(TEST_OPENCL), )
TEST_CXX_FLAGS += -DTEST_OPENCL
endif

ifneq ($(TEST_PTX), )
TEST_CXX_FLAGS += -DTEST_PTX
endif

# Compiling the tutorials requires libpng
LIBPNG_LIBS_DEFAULT = $(shell libpng-config --ldflags)
LIBPNG_CXX_FLAGS ?= $(shell libpng-config --cflags)
# Workaround for libpng-config pointing to 64-bit versions on linux even when we're building for 32-bit
ifneq (,$(findstring -m32,$(CXX)))
ifneq (,$(findstring x86_64,$(LIBPNG_LIBS_DEFAULT)))
LIBPNG_LIBS ?= -lpng
endif
endif
LIBPNG_LIBS ?= $(LIBPNG_LIBS_DEFAULT)

ifdef BUILD_PREFIX
BUILD_DIR = build/$(BUILD_PREFIX)
BIN_DIR = bin/$(BUILD_PREFIX)
DISTRIB_DIR=distrib/$(BUILD_PREFIX)
else
BUILD_DIR = build
BIN_DIR = bin
DISTRIB_DIR=distrib
endif

FILTERS_DIR = $(BUILD_DIR)/filters
SOURCE_FILES = \
  AllocationBoundsInference.cpp \
  BlockFlattening.cpp \
  BoundaryConditions.cpp \
  Bounds.cpp \
  BoundsInference.cpp \
  BranchVisitors.cpp \
  Buffer.cpp \
  CodeGen_ARM.cpp \
  CodeGen_C.cpp \
  CodeGen.cpp \
  CodeGen_GPU_Dev.cpp \
  CodeGen_GPU_Host.cpp \
  CodeGen_Internal.cpp \
  CodeGen_MIPS.cpp \
  CodeGen_OpenCL_Dev.cpp \
  CodeGen_OpenGL_Dev.cpp \
  CodeGen_PNaCl.cpp \
  CodeGen_Posix.cpp \
  CodeGen_PTX_Dev.cpp \
  CodeGen_X86.cpp \
  CSE.cpp \
  Debug.cpp \
  DebugToFile.cpp \
  Deinterleave.cpp \
  Derivative.cpp \
  EarlyFree.cpp \
  Error.cpp \
  ExprUsesVar.cpp \
  FastIntegerDivide.cpp \
  FindCalls.cpp \
  Func.cpp \
  Function.cpp \
  FuseGPUThreadLoops.cpp \
  Generator.cpp \
  HumanReadableStmt.cpp \
  Image.cpp \
  InjectHostDevBufferCopies.cpp \
  InjectOpenGLIntrinsics.cpp \
  Inline.cpp \
  InlineReductions.cpp \
  IntegerDivisionTable.cpp \
  Introspection.cpp \
  IR.cpp \
  IREquality.cpp \
  IRMatch.cpp \
  IRMutator.cpp \
  IROperator.cpp \
  IRPrinter.cpp \
  IRVisitor.cpp \
  JITModule.cpp \
  Lerp.cpp \
  LinearSolve.cpp \
  Lower.cpp \
  Memoization.cpp \
  ModulusRemainder.cpp \
  ObjectInstanceRegistry.cpp \
  OneToOne.cpp \
  ParallelRVar.cpp \
  Param.cpp \
  Parameter.cpp \
  Profiling.cpp \
  Qualify.cpp \
  Random.cpp \
  RDom.cpp \
  Reduction.cpp \
  RemoveDeadAllocations.cpp \
  RemoveTrivialForLoops.cpp \
  RemoveUndef.cpp \
  Schedule.cpp \
  Simplify.cpp \
  SkipStages.cpp \
  SlidingWindow.cpp \
  SpecializeBranchedLoops.cpp \
  SpecializeClampedRamps.cpp \
  StmtCompiler.cpp \
  StmtToHtml.cpp \
  StorageFlattening.cpp \
  StorageFolding.cpp \
  Substitute.cpp \
  Target.cpp \
  Tracing.cpp \
  Tuple.cpp \
  Type.cpp \
  UnifyDuplicateLets.cpp \
  UniquifyVariableNames.cpp \
  UnrollLoops.cpp \
  Util.cpp \
  VaryingAttributes.cpp \
  VectorizeLoops.cpp

# The externally-visible header files that go into making Halide.h. Don't include anything here that includes llvm headers.
HEADER_FILES = \
  AllocationBoundsInference.h \
  Argument.h \
  BlockFlattening.h \
  BoundaryConditions.h \
  Bounds.h \
  BoundsInference.h \
  BranchVisitors.h \
  Buffer.h \
  buffer_t.h \
  CodeGen_ARM.h \
  CodeGen_C.h \
  CodeGen_GPU_Dev.h \
  CodeGen_GPU_Host.h \
  CodeGen.h \
  CodeGen_MIPS.h \
  CodeGen_OpenCL_Dev.h \
  CodeGen_OpenGL_Dev.h \
  CodeGen_PNaCl.h \
  CodeGen_Posix.h \
  CodeGen_PTX_Dev.h \
  CodeGen_X86.h \
  CSE.h \
  Debug.h \
  DebugToFile.h \
  Deinterleave.h \
  Derivative.h \
  EarlyFree.h \
  Error.h \
  ExprUsesVar.h \
  Extern.h \
  FastIntegerDivide.h \
  FindCalls.h \
  Func.h \
  Function.h \
  FuseGPUThreadLoops.h \
  Generator.h \
  HumanReadableStmt.h \
  Image.h \
  InjectHostDevBufferCopies.h \
  InjectOpenGLIntrinsics.h \
  Inline.h \
  InlineReductions.h \
  IntegerDivisionTable.h \
  Introspection.h \
  IntrusivePtr.h \
  IREquality.h \
  IR.h \
  IRMatch.h \
  IRMutator.h \
  IROperator.h \
  IRPrinter.h \
  IRVisitor.h \
  JITModule.h \
  Lambda.h \
  Lerp.h \
  LinearSolve.h \
  Lower.h \
  MainPage.h \
  Memoization.h \
  ModulusRemainder.h \
  ObjectInstanceRegistry.h \
  OneToOne.h \
  ParallelRVar.h \
  Parameter.h \
  Param.h \
  Profiling.h \
  Qualify.h \
  Random.h \
  RDom.h \
  Reduction.h \
  RemoveDeadAllocations.h \
  RemoveTrivialForLoops.h \
  RemoveUndef.h \
  Schedule.h \
  Scope.h \
  Simplify.h \
  SkipStages.h \
  SlidingWindow.h \
  SpecializeBranchedLoops.h \
  SpecializeClampedRamps.h \
  StmtCompiler.h \
  StmtToHtml.h \
  StorageFlattening.h \
  StorageFolding.h \
  Substitute.h \
  Target.h \
  Tracing.h \
  Tuple.h \
  Type.h \
  UnifyDuplicateLets.h \
  UniquifyVariableNames.h \
  UnrollLoops.h \
  Util.h \
  Var.h \
  VectorizeLoops.h

OBJECTS = $(SOURCE_FILES:%.cpp=$(BUILD_DIR)/%.o)
HEADERS = $(HEADER_FILES:%.h=src/%.h)

RUNTIME_CPP_COMPONENTS = android_io cuda fake_thread_pool gcd_thread_pool ios_io android_clock linux_clock nogpu opencl posix_allocator posix_clock osx_clock windows_clock posix_error_handler posix_io posix_math posix_thread_pool android_host_cpu_count linux_host_cpu_count osx_host_cpu_count tracing write_debug_image windows_cuda windows_opencl windows_io windows_thread_pool ssp opengl linux_opengl_context osx_opengl_context android_opengl_context posix_print gpu_device_selection cache nacl_host_cpu_count to_string module_jit_ref_count module_aot_ref_count
RUNTIME_LL_COMPONENTS = arm posix_math ptx_dev x86_avx x86 x86_sse41 pnacl_math win32_math aarch64 mips

INITIAL_MODULES = $(RUNTIME_CPP_COMPONENTS:%=$(BUILD_DIR)/initmod.%_32.o) $(RUNTIME_CPP_COMPONENTS:%=$(BUILD_DIR)/initmod.%_64.o) $(RUNTIME_CPP_COMPONENTS:%=$(BUILD_DIR)/initmod.%_32_debug.o) $(RUNTIME_CPP_COMPONENTS:%=$(BUILD_DIR)/initmod.%_64_debug.o) $(RUNTIME_LL_COMPONENTS:%=$(BUILD_DIR)/initmod.%_ll.o) $(PTX_DEVICE_INITIAL_MODULES:libdevice.%.bc=$(BUILD_DIR)/initmod_ptx.%_ll.o)

.PHONY: all
all: $(BIN_DIR)/libHalide.a $(BIN_DIR)/libHalide.so include/Halide.h include/HalideRuntime.h test_internal

ifeq ($(USE_LLVM_SHARED_LIB), )
$(BIN_DIR)/libHalide.a: $(OBJECTS) $(INITIAL_MODULES)
	# Determine the relevant object files from llvm with a dummy
	# compilation. Passing -t to the linker gets it to list which
	# object files in which archives it uses to resolve
	# symbols. We only care about the libLLVM ones.
	@rm -rf $(BUILD_DIR)/llvm_objects
	@mkdir -p $(BUILD_DIR)/llvm_objects
	$(CXX) -o /dev/null -shared $(OBJECTS) $(INITIAL_MODULES) -Wl,-t $(LLVM_STATIC_LIBS) -ldl -lz -lpthread | grep libLLVM | sed "s/[()]/ /g" > $(BUILD_DIR)/llvm_objects/list
	# Extract the necessary object files from the llvm archives.
	cd $(BUILD_DIR)/llvm_objects; xargs -n2 ar x < list
	# Archive together all the halide and llvm object files
	@-mkdir -p $(BIN_DIR)
	@rm -f $(BIN_DIR)/libHalide.a
	ar q $(BIN_DIR)/libHalide.a $(OBJECTS) $(INITIAL_MODULES) $(BUILD_DIR)/llvm_objects/*.o
	ranlib $(BIN_DIR)/libHalide.a
else
$(BIN_DIR)/libHalide.a: $(OBJECTS) $(INITIAL_MODULES)
	@-mkdir -p $(BIN_DIR)
	@rm -f $(BIN_DIR)/libHalide.a
	ar q $(BIN_DIR)/libHalide.a $(OBJECTS) $(INITIAL_MODULES)
	ranlib $(BIN_DIR)/libHalide.a
endif

$(BIN_DIR)/libHalide.so: $(BIN_DIR)/libHalide.a
	$(CXX) $(BUILD_BIT_SIZE) -shared $(OBJECTS) $(INITIAL_MODULES) $(LLVM_STATIC_LIBS) $(LLVM_LDFLAGS) $(LLVM_SHARED_LIBS) -ldl -lz -lpthread -o $(BIN_DIR)/libHalide.so

include/Halide.h: $(HEADERS) src/HalideFooter.h $(BIN_DIR)/build_halide_h
	mkdir -p include
	cd src; ../$(BIN_DIR)/build_halide_h $(HEADER_FILES) HalideFooter.h > ../include/Halide.h; cd ..

include/HalideRuntime.h: src/runtime/HalideRuntime.h
	mkdir -p include
	cp src/runtime/HalideRuntime.h include/

$(BIN_DIR)/build_halide_h: tools/build_halide_h.cpp
	g++ $< -o $@

msvc/initmod.cpp: $(INITIAL_MODULES)
	echo "extern \"C\" {" > msvc/initmod.cpp
	cat $(BUILD_DIR)/initmod*.cpp >> msvc/initmod.cpp
	echo "}" >> msvc/initmod.cpp

-include $(OBJECTS:.o=.d)
-include $(INITIAL_MODULES:.o=.d)

# -m64 isn't respected unless we also use a 64-bit target
$(BUILD_DIR)/initmod.%_64.ll: src/runtime/%.cpp $(BUILD_DIR)/clang_ok
	@-mkdir -p $(BUILD_DIR)
	$(CLANG) $(CXX_WARNING_FLAGS) -O3 -ffreestanding -fno-blocks -fno-exceptions -fno-unwind-tables -m64 -target "x86_64-unknown-unknown-unknown" -DCOMPILING_HALIDE_RUNTIME -DBITS_64 -emit-llvm -S src/runtime/$*.cpp -o $@ -MMD -MP -MF $(BUILD_DIR)/initmod.$*_64.d

$(BUILD_DIR)/initmod.%_32.ll: src/runtime/%.cpp $(BUILD_DIR)/clang_ok
	@-mkdir -p $(BUILD_DIR)
	$(CLANG) $(CXX_WARNING_FLAGS) -O3 -ffreestanding -fno-blocks -fno-exceptions -fno-unwind-tables -m32 -target "i386-unknown-unknown-unknown" -DCOMPILING_HALIDE_RUNTIME -DBITS_32 -emit-llvm -S src/runtime/$*.cpp -o $@ -MMD -MP -MF $(BUILD_DIR)/initmod.$*_32.d

$(BUILD_DIR)/initmod.%_64_debug.ll: src/runtime/%.cpp $(BUILD_DIR)/clang_ok
	@-mkdir -p $(BUILD_DIR)
	$(CLANG) $(CXX_WARNING_FLAGS) -g -DDEBUG_RUNTIME -ffreestanding -fno-blocks -fno-exceptions -m64 -target "x86_64-unknown-unknown-unknown" -DCOMPILING_HALIDE_RUNTIME -DBITS_64 -emit-llvm -S src/runtime/$*.cpp -o $@ -MMD -MP -MF $(BUILD_DIR)/initmod.$*_64_debug.d

$(BUILD_DIR)/initmod.%_32_debug.ll: src/runtime/%.cpp $(BUILD_DIR)/clang_ok
	@-mkdir -p $(BUILD_DIR)
	$(CLANG) $(CXX_WARNING_FLAGS) -g -DDEBUG_RUNTIME -ffreestanding -fno-blocks -fno-exceptions -m32 -target "i386-unknown-unknown-unknown" -DCOMPILING_HALIDE_RUNTIME -DBITS_32 -emit-llvm -S src/runtime/$*.cpp -o $@ -MMD -MP -MF $(BUILD_DIR)/initmod.$*_32_debug.d

$(BUILD_DIR)/initmod.%_ll.ll: src/runtime/%.ll
	@-mkdir -p $(BUILD_DIR)
	cp src/runtime/$*.ll $(BUILD_DIR)/initmod.$*_ll.ll

$(BUILD_DIR)/initmod.%.bc: $(BUILD_DIR)/initmod.%.ll $(BUILD_DIR)/llvm_ok
	$(LLVM_AS) $(BUILD_DIR)/initmod.$*.ll -o $(BUILD_DIR)/initmod.$*.bc

$(BUILD_DIR)/initmod.%.cpp: $(BIN_DIR)/bitcode2cpp $(BUILD_DIR)/initmod.%.bc
	./$(BIN_DIR)/bitcode2cpp $* < $(BUILD_DIR)/initmod.$*.bc > $@

$(BUILD_DIR)/initmod_ptx.%_ll.cpp: $(BIN_DIR)/bitcode2cpp src/runtime/nvidia_libdevice_bitcode/libdevice.%.bc
	./$(BIN_DIR)/bitcode2cpp ptx_$(basename $*)_ll < src/runtime/nvidia_libdevice_bitcode/libdevice.$*.bc > $@

$(BIN_DIR)/bitcode2cpp: tools/bitcode2cpp.cpp
	@-mkdir -p $(BIN_DIR)
	$(CXX) $< -o $@

$(BUILD_DIR)/initmod_ptx.%_ll.o: $(BUILD_DIR)/initmod_ptx.%_ll.cpp
	$(CXX) -c $< -o $@ -MMD -MP -MF $(BUILD_DIR)/$*.d -MT $(BUILD_DIR)/$*.o

$(BUILD_DIR)/initmod.%.o: $(BUILD_DIR)/initmod.%.cpp
	$(CXX) $(BUILD_BIT_SIZE) -c $< -o $@ -MMD -MP -MF $(BUILD_DIR)/$*.d -MT $(BUILD_DIR)/$*.o

$(BUILD_DIR)/%.o: src/%.cpp src/%.h $(BUILD_DIR)/llvm_ok
	@-mkdir -p $(BUILD_DIR)
	$(CXX) $(CXX_FLAGS) -c $< -o $@ -MMD -MP -MF $(BUILD_DIR)/$*.d -MT $(BUILD_DIR)/$*.o

.PHONY: clean
clean:
	rm -rf $(BIN_DIR)/*
	rm -rf $(BUILD_DIR)/*
	rm -rf $(FILTERS_DIR)/*
	rm -rf include/*
	rm -rf doc

.SECONDARY:

CORRECTNESS_TESTS = $(shell ls test/correctness/*.cpp)
PERFORMANCE_TESTS = $(shell ls test/performance/*.cpp)
ERROR_TESTS = $(shell ls test/error/*.cpp)
WARNING_TESTS = $(shell ls test/warning/*.cpp)
OPENGL_TESTS := $(shell ls test/opengl/*.cpp)
GENERATOR_TESTS := $(shell ls test/generator/*test.cpp)
TUTORIALS = $(filter-out %_generate.cpp, $(shell ls tutorial/*.cpp))

LD_PATH_SETUP = DYLD_LIBRARY_PATH=${DYLD_LIBRARY_PATH}:../$(BIN_DIR) LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:../$(BIN_DIR)
LD_PATH_SETUP2 = DYLD_LIBRARY_PATH=${DYLD_LIBRARY_PATH}:../../$(BIN_DIR) LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:../../$(BIN_DIR)
LD_PATH_SETUP3 = DYLD_LIBRARY_PATH=${DYLD_LIBRARY_PATH}:../../../$(BIN_DIR) LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:../../../$(BIN_DIR)

test_correctness: $(CORRECTNESS_TESTS:test/correctness/%.cpp=test_%)
test_performance: $(PERFORMANCE_TESTS:test/performance/%.cpp=performance_%)
test_errors: $(ERROR_TESTS:test/error/%.cpp=error_%)
test_warnings: $(WARNING_TESTS:test/warning/%.cpp=warning_%)
test_tutorials: $(TUTORIALS:tutorial/%.cpp=tutorial_%)
test_valgrind: $(CORRECTNESS_TESTS:test/correctness/%.cpp=valgrind_%)
test_opengl: $(OPENGL_TESTS:test/opengl/%.cpp=opengl_%)
ifneq ($(CXX11),)
test_generators: $(GENERATOR_TESTS:test/generator/%_aottest.cpp=generator_aot_%) $(GENERATOR_TESTS:test/generator/%_jittest.cpp=generator_jit_%)
else
test_generators: ;
endif

ALL_TESTS = test_internal test_correctness test_errors test_tutorials test_warnings

ifneq ($(CXX11),)
ALL_TESTS += test_generators
endif

# These targets perform timings of each test. For most tests this includes Halide JIT compile times, and run times.
# For static and generator tests they time the compile time only. The times are recorded in CSV files.
time_compilation_correctness: init_time_compilation_correctness $(CORRECTNESS_TESTS:test/correctness/%.cpp=time_compilation_test_%)
time_compilation_performance: init_time_compilation_performance $(PERFORMANCE_TESTS:test/performance/%.cpp=time_compilation_performance_%)
time_compilation_opengl: init_time_compilation_opengl $(OPENGL_TESTS:test/opengl/%.cpp=time_compilation_opengl_%)
ifneq ($(CXX11),)
time_compilation_generators: init_time_compilation_generator $(GENERATOR_TESTS:test/generator/%_aottest.cpp=time_compilation_generator_%)
else
time_compilation_generators: ;
endif

init_time_compilation_%:
	echo "TEST,User (s),System (s),Real" > $(@:init_time_compilation_%=compile_times_%.csv)

TIME_COMPILATION ?= /usr/bin/time -a -f "$@,%U,%S,%E" -o

run_tests: $(ALL_TESTS)
	make test_performance

build_tests: $(CORRECTNESS_TESTS:test/correctness/%.cpp=$(BIN_DIR)/test_%) \
	$(PERFORMANCE_TESTS:test/performance/%.cpp=$(BIN_DIR)/performance_%) \
	$(ERROR_TESTS:test/error/%.cpp=$(BIN_DIR)/error_%) \
	$(WARNING_TESTS:test/error/%.cpp=$(BIN_DIR)/warning_%)

time_compilation_tests: time_compilation_correctness time_compilation_performance time_compilation_static time_compilation_generators

$(BIN_DIR)/test_internal: test/internal.cpp $(BIN_DIR)/libHalide.so
	$(CXX) $(CXX_FLAGS)  $< -Isrc -L$(BIN_DIR) -lHalide $(LLVM_LDFLAGS) -lpthread -ldl -lz -o $@

$(BIN_DIR)/test_%: test/correctness/%.cpp $(BIN_DIR)/libHalide.so include/Halide.h include/HalideRuntime.h
	$(CXX) $(TEST_CXX_FLAGS) $(OPTIMIZE) $< -Iinclude -L$(BIN_DIR) -lHalide $(LLVM_LDFLAGS) -lpthread -ldl -lz -o $@

$(BIN_DIR)/performance_%: test/performance/%.cpp $(BIN_DIR)/libHalide.so include/Halide.h test/performance/clock.h
	$(CXX) $(TEST_CXX_FLAGS) $(OPTIMIZE) $< -Iinclude -L$(BIN_DIR) -lHalide $(LLVM_LDFLAGS) -lpthread -ldl -lz -o $@

$(BIN_DIR)/error_%: test/error/%.cpp $(BIN_DIR)/libHalide.so include/Halide.h
	$(CXX) $(TEST_CXX_FLAGS) $(OPTIMIZE) $< -Iinclude -L$(BIN_DIR) -lHalide $(LLVM_LDFLAGS) -lpthread -ldl -lz -o $@

$(BIN_DIR)/warning_%: test/warning/%.cpp $(BIN_DIR)/libHalide.so include/Halide.h
	$(CXX) $(TEST_CXX_FLAGS) $(OPTIMIZE) $< -Iinclude -L$(BIN_DIR) -lHalide $(LLVM_LDFLAGS) -lpthread -ldl -lz -o $@

$(BIN_DIR)/opengl_%: test/opengl/%.cpp $(BIN_DIR)/libHalide.so include/Halide.h
	$(CXX) $(TEST_CXX_FLAGS) $(OPTIMIZE) $< -Iinclude -Isrc -L$(BIN_DIR) -lHalide $(LLVM_LDFLAGS) -lpthread -ldl -lz -o $@

tmp/static/%/%.o: $(BIN_DIR)/static_%_generate
	@-mkdir -p tmp/static/$*
	cd tmp/static/$*; $(LD_PATH_SETUP3) ../../../$<
	@-echo

# TODO(srj): this doesn't auto-delete, why not?
.INTERMEDIATE: $(FILTERS_DIR)/%.generator

# By default, %.generator is produced by building %_generator.cpp
# Note that the rule includes all _generator.cpp files, so that generators with define_extern
# usage can just add deps later.
$(FILTERS_DIR)/%.generator: test/generator/%_generator.cpp $(GENGEN_DEPS)
	@mkdir -p $(FILTERS_DIR)
	$(CXX) -std=c++11 -g $(CXX_WARNING_FLAGS) -fno-rtti -Iinclude $(filter %_generator.cpp,$^) tools/GenGen.cpp -L$(BIN_DIR) -lHalide -lz -lpthread -ldl -o $@

# By default, %.o/.h are produced by executing %.generator
$(FILTERS_DIR)/%.o $(FILTERS_DIR)/%.h: $(FILTERS_DIR)/%.generator
	@mkdir -p $(FILTERS_DIR)
	@-mkdir -p tmp
	cd tmp; $(LD_PATH_SETUP) ../$< -g $(notdir $*) -o ../$(FILTERS_DIR) target=$(HL_TARGET)

# If we want to use a Generator with custom GeneratorParams, we need to write
# custom rules: to pass the GeneratorParams, and to give a unique function and file name.
$(FILTERS_DIR)/tiled_blur_interleaved.o $(FILTERS_DIR)/tiled_blur_interleaved.h: $(FILTERS_DIR)/tiled_blur.generator
	@-mkdir -p tmp
	cd tmp; $(LD_PATH_SETUP) ../$< -g tiled_blur -f tiled_blur_interleaved -o ../$(FILTERS_DIR) target=$(HL_TARGET) is_interleaved=true

$(FILTERS_DIR)/tiled_blur_blur_interleaved.o $(FILTERS_DIR)/tiled_blur_blur_interleaved.h: $(FILTERS_DIR)/tiled_blur_blur.generator
	@-mkdir -p tmp
	cd tmp; $(LD_PATH_SETUP) ../$< -g tiled_blur_blur -f tiled_blur_blur_interleaved -o ../$(FILTERS_DIR) target=$(HL_TARGET) is_interleaved=true

# user_context needs to be generated with user_context as the first argument to its calls
$(FILTERS_DIR)/user_context.o $(FILTERS_DIR)/user_context.h: $(FILTERS_DIR)/user_context.generator
	@-mkdir -p tmp
	cd tmp; $(LD_PATH_SETUP) ../$< -o ../$(FILTERS_DIR) target=$(HL_TARGET)-user_context

# ditto for user_context_insanity
$(FILTERS_DIR)/user_context_insanity.o $(FILTERS_DIR)/user_context_insanity.h: $(FILTERS_DIR)/user_context_insanity.generator
	@-mkdir -p tmp
	cd tmp; $(LD_PATH_SETUP) ../$< -o ../$(FILTERS_DIR) target=$(HL_TARGET)-user_context

# Some .generators have additional dependencies (usually due to define_extern usage).
# These typically require two extra dependencies:
# (1) Ensuring the extra _generator.cpp is built into the .generator.
# (2) Ensuring the extra .o is linked into the final output.

# tiled_blur also needs tiled_blur_blur, due to an extern_generator dependency.
$(FILTERS_DIR)/tiled_blur.generator: test/generator/tiled_blur_blur_generator.cpp
# TODO(srj): we really want to say "anything that depends on tiled_blur.o also depends on tiled_blur_blur.o";
# is there a way to specify that in Make?
$(BIN_DIR)/generator_aot_tiled_blur: $(FILTERS_DIR)/tiled_blur_blur.o
$(BIN_DIR)/generator_aot_tiled_blur_interleaved: $(FILTERS_DIR)/tiled_blur_blur_interleaved.o

# Usually, it's considered best practice to have one Generator per .cpp file,
# with the generator-name and filename matching; nested_externs_generators.cpp
# is a counterexample, and thus requires some special casing to get right.
# First, make a special rule to build each of the Generators in nested_externs_generator.cpp
# (which all have the form nested_externs_*)
$(FILTERS_DIR)/nested_externs_%.o $(FILTERS_DIR)/nested_externs_%.h: $(FILTERS_DIR)/nested_externs.generator
	@-mkdir -p tmp
	cd tmp; $(LD_PATH_SETUP) ../$< -g nested_externs_$* -o ../$(FILTERS_DIR) target=$(HL_TARGET)

# Synthesize 'nested_externs.o' based on the four generator products we need:
$(FILTERS_DIR)/nested_externs.o: $(FILTERS_DIR)/nested_externs_leaf.o $(FILTERS_DIR)/nested_externs_inner.o $(FILTERS_DIR)/nested_externs_combine.o $(FILTERS_DIR)/nested_externs_root.o
	$(LD) -r $(FILTERS_DIR)/nested_externs_*.o -o $(FILTERS_DIR)/nested_externs.o

# Synthesize 'nested_externs.h' based on the four generator products we need:
$(FILTERS_DIR)/nested_externs.h: $(FILTERS_DIR)/nested_externs.o
	cat $(FILTERS_DIR)/nested_externs_*.h > $(FILTERS_DIR)/nested_externs.h

# By default, %_aottest.cpp depends on $(FILTERS_DIR)/%.o/.h (but not libHalide).
$(BIN_DIR)/generator_aot_%: test/generator/%_aottest.cpp $(FILTERS_DIR)/%.o $(FILTERS_DIR)/%.h include/HalideRuntime.h
	$(CXX) $(TEST_CXX_FLAGS) $(filter-out %.h,$^) -Iinclude -I$(FILTERS_DIR) -I apps/support -I src/runtime -lpthread $(STATIC_TEST_LIBS) -o $@

# By default, %_jittest.cpp depends on libHalide.
$(BIN_DIR)/generator_jit_%: test/generator/%_jittest.cpp $(BIN_DIR)/libHalide.so include/Halide.h
	$(CXX) $(TEST_CXX_FLAGS) $(filter-out %.h %.so,$^) -Iinclude -I$(FILTERS_DIR) -I apps/support -I src/runtime -L$(BIN_DIR) -lHalide $(LLVM_LDFLAGS) -lpthread -ldl -lz -o $@

$(BIN_DIR)/tutorial_%: tutorial/%.cpp $(BIN_DIR)/libHalide.so include/Halide.h
	@ if [[ $@ == *_run ]]; then \
		export TUTORIAL=$* ;\
		export LESSON=`echo $${TUTORIAL} | cut -b1-9`; \
		make tutorial_$${TUTORIAL/run/generate}; \
		$(CXX) $(TEST_CXX_FLAGS) $(LIBPNG_CXX_FLAGS) $(OPTIMIZE) $< \
		-Itmp tmp/$${LESSON}_*.o -lpthread -ldl -lz $(LIBPNG_LIBS) $(STATIC_TEST_LIBS) -o $@; \
	else \
		$(CXX) $(TEST_CXX_FLAGS) $(LIBPNG_CXX_FLAGS) $(OPTIMIZE) $< \
		-Iinclude -L$(BIN_DIR) -lHalide $(STATIC_TEST_LIBS) $(LLVM_LDFLAGS) -lpthread -ldl -lz $(LIBPNG_LIBS) -o $@;\
	fi

test_%: $(BIN_DIR)/test_%
	@-mkdir -p tmp
	cd tmp ; $(LD_PATH_SETUP) ../$<
	@-echo

valgrind_%: $(BIN_DIR)/test_%
	@-mkdir -p tmp
	cd tmp ; $(LD_PATH_SETUP) valgrind --error-exitcode=-1 ../$<
	@-echo

# This test is *supposed* to do an out-of-bounds read, so skip it when testing under valgrind
valgrind_tracing_stack: $(BIN_DIR)/test_tracing_stack
	@-mkdir -p tmp
	cd tmp ; $(LD_PATH_SETUP) ../$(BIN_DIR)/test_tracing_stack
	@-echo

performance_%: $(BIN_DIR)/performance_%
	@-mkdir -p tmp
	cd tmp ; $(LD_PATH_SETUP) ../$<
	@-echo

error_%: $(BIN_DIR)/error_%
	@-mkdir -p tmp
	cd tmp ; $(LD_PATH_SETUP) ../$< 2>&1 | egrep --q "terminating with uncaught exception|^terminate called|^Error"
	@-echo

warning_%: $(BIN_DIR)/warning_%
	@-mkdir -p tmp
	cd tmp ; $(LD_PATH_SETUP) ../$< 2>&1 | egrep --q "^Warning"
	@-echo

opengl_%: HL_JIT_TARGET ?= host-opengl
opengl_%: $(BIN_DIR)/opengl_%
	@-mkdir -p tmp
	cd tmp ; HL_JIT_TARGET=$(HL_JIT_TARGET) $(LD_PATH_SETUP) ../$< 2>&1
	@-echo


generator_%: $(BIN_DIR)/generator_%
	@-mkdir -p tmp
	cd tmp ; $(LD_PATH_SETUP) ../$<
	@-echo

tmp/images/%.png: tutorial/images/%.png
	@-mkdir -p tmp/images
	cp $< tmp/images/

tutorial_%: $(BIN_DIR)/tutorial_% tmp/images/rgb.png tmp/images/gray.png
	@-mkdir -p tmp
	cd tmp ; $(LD_PATH_SETUP) ../$<
	@-echo

time_compilation_test_%: $(BIN_DIR)/test_%
	$(TIME_COMPILATION) compile_times_correctness.csv make $(@:time_compilation_test_%=test_%)

time_compilation_performance_%: $(BIN_DIR)/performance_%
	$(TIME_COMPILATION) compile_times_performance.csv make $(@:time_compilation_performance_%=performance_%)

time_compilation_opengl_%: $(BIN_DIR)/opengl_%
	$(TIME_COMPILATION) compile_times_opengl.csv make $(@:time_compilation_opengl_%=opengl_%)

time_compilation_static_%: $(BIN_DIR)/static_%_generate
	$(TIME_COMPILATION) compile_times_static.csv make $(@:time_compilation_static_%=tmp/static/%/%.o)

time_compilation_generator_%: $(FILTERS_DIR)/%.generator
	$(TIME_COMPILATION) compile_times_generator.csv make $(@:time_compilation_generator_%=$(FILTERS_DIR)/%.o)

time_compilation_generator_tiled_blur_interleaved: $(FILTERS_DIR)/tiled_blur.generator
	$(TIME_COMPILATION) compile_times_generator.csv make $(FILTERS_DIR)/tiled_blur_interleaved.o

.PHONY: test_apps
test_apps: $(BIN_DIR)/libHalide.a include/Halide.h
	make -C apps/bilateral_grid clean
	make -C apps/bilateral_grid out.png
	make -C apps/local_laplacian clean
	make -C apps/local_laplacian out.png
	make -C apps/interpolate clean
	make -C apps/interpolate out.png
	make -C apps/blur clean
	make -C apps/blur test
	./apps/blur/test
	make -C apps/wavelet clean
	make -C apps/wavelet test
	make -C apps/c_backend clean
	make -C apps/c_backend test
	make -C apps/modules clean
	make -C apps/modules out.png

ifneq (,$(findstring version 3.,$(CLANG_VERSION)))
ifeq (,$(findstring version 3.0,$(CLANG_VERSION)))
CLANG_OK=yes
endif
endif

ifneq (,$(findstring Apple clang version 4.0,$(CLANG_VERSION)))
CLANG_OK=yes
endif

ifneq (,$(findstring Apple LLVM version 5.0,$(CLANG_VERSION)))
CLANG_OK=yes
endif

ifneq (,$(findstring 3.,$(LLVM_VERSION)))
ifeq (,$(findstring 3.0,$(LLVM_VERSION)))
ifeq (,$(findstring 3.1,$(LLVM_VERSION)))
LLVM_OK=yes
endif
endif
endif

ifneq (,$findstring 3.3.,$(LLVM_VERSION))
LLVM_OK=yes
endif
ifneq (,$findstring 3.2.,$(LLVM_VERSION))
LLVM_OK=yes
endif

ifdef CLANG_OK
$(BUILD_DIR)/clang_ok:
	@echo "Found a new enough version of clang"
	mkdir -p $(BUILD_DIR)
	touch $(BUILD_DIR)/clang_ok
else
$(BUILD_DIR)/clang_ok:
	@echo "Can't find clang or version of clang too old (we need 3.1 or greater):"
	@echo "You can override this check by setting CLANG_OK=y"
	echo '$(CLANG_VERSION)'
	echo $(findstring version 3,$(CLANG_VERSION))
	echo $(findstring version 3.0,$(CLANG_VERSION))
	$(CLANG) --version
	@exit 1
endif

ifdef LLVM_OK
$(BUILD_DIR)/llvm_ok:
	@echo "Found a new enough version of llvm"
	mkdir -p $(BUILD_DIR)
	touch $(BUILD_DIR)/llvm_ok
else
$(BUILD_DIR)/llvm_ok:
	@echo "Can't find llvm or version of llvm too old (we need 3.2 or greater):"
	@echo "You can override this check by setting LLVM_OK=y"
	$(LLVM_CONFIG) --version
	@exit 1
endif

.PHONY: doc
docs: doc
doc: src test
	doxygen

$(DISTRIB_DIR)/halide.tgz: $(BIN_DIR)/libHalide.a $(BIN_DIR)/libHalide.so include/Halide.h include/HalideRuntime.h
	mkdir -p $(DISTRIB_DIR)/include $(DISTRIB_DIR)/bin $(DISTRIB_DIR)/tutorial $(DISTRIB_DIR)/tutorial/images
	cp $(BIN_DIR)/libHalide.a $(BIN_DIR)/libHalide.so $(DISTRIB_DIR)/bin
	cp include/Halide.h $(DISTRIB_DIR)/include
	cp include/HalideRuntime.h $(DISTRIB_DIR)/include
	cp tutorial/images/*.png $(DISTRIB_DIR)/tutorial/images
	cp tutorial/*.cpp tutorial/*.h $(DISTRIB_DIR)/tutorial
	cp README.md $(DISTRIB_DIR)
	ln -sf $(DISTRIB_DIR) halide
	tar -czf $(DISTRIB_DIR)/halide.tgz halide/bin halide/include halide/tutorial halide/README.md
	rm halide

distrib: $(DISTRIB_DIR)/halide.tgz

$(BIN_DIR)/HalideProf: util/HalideProf.cpp
	$(CXX) $(OPTIMIZE) $< -Iinclude -L$(BIN_DIR) -o $@

$(BIN_DIR)/HalideTrace: util/HalideTrace.cpp
	$(CXX) $(OPTIMIZE) $< -Iinclude -L$(BIN_DIR) -o $@