# ################################################################
# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
#
# This source code is licensed under both the BSD-style license (found in the
# LICENSE file in the root directory of this source tree) and the GPLv2 (found
# in the COPYING file in the root directory of this source tree).
# You may select, at your option, one of the above-listed licenses.
# ################################################################

# Optionally user defined flags
CFLAGS ?= -O3
CXXFLAGS ?= -O3
CPPFLAGS ?=
ASFLAGS ?=
LDFLAGS ?=
ARFLAGS ?=
LIB_FUZZING_ENGINE ?= libregression.a
FUZZING_ENGINE := $(LIB_FUZZING_ENGINE)
PYTHON ?= python
ifeq ($(shell sh -c 'MSYSTEM="MSYS" uname') , Darwin)
	DOWNLOAD?=curl -L -o
else
	DOWNLOAD?=wget -O
endif
CORPORA_URL_PREFIX:=https://github.com/facebook/zstd/releases/download/fuzz-corpora/

LIBZSTD_MK_DIR = ../../lib
DEBUGLEVEL ?= 2
ZSTD_LEGACY_SUPPORT ?= 1

.PHONY: default
default: all

include $(LIBZSTD_MK_DIR)/libzstd.mk

# The fuzzers compile the C source list directly. Keep their Rust archive
# configuration in lockstep with the C HUF selection, and link it after all C
# objects so migrated C shims resolve exactly as they do in the normal tests.
CARGO ?= cargo
RUST_DIR := ../../rust
RUST_MANIFEST := $(RUST_DIR)/Cargo.toml
RUST_SOURCES := $(RUST_MANIFEST) $(RUST_DIR)/Cargo.lock \
                $(shell find $(RUST_DIR)/src -type f -name '*.rs' -print)

RUST_HUF_FORCE_X1 := $(HUF_FORCE_DECOMPRESS_X1)
RUST_HUF_FORCE_X2 := $(HUF_FORCE_DECOMPRESS_X2)
ifneq ($(filter -DHUF_FORCE_DECOMPRESS_X1 -DHUF_FORCE_DECOMPRESS_X1=%,$(CPPFLAGS) $(CFLAGS) $(MOREFLAGS)),)
RUST_HUF_FORCE_X1 := 1
endif
ifneq ($(filter -DHUF_FORCE_DECOMPRESS_X2 -DHUF_FORCE_DECOMPRESS_X2=%,$(CPPFLAGS) $(CFLAGS) $(MOREFLAGS)),)
RUST_HUF_FORCE_X2 := 1
endif
ifneq ($(RUST_HUF_FORCE_X1),0)
ifneq ($(RUST_HUF_FORCE_X2),0)
$(error HUF_FORCE_DECOMPRESS_X1 and HUF_FORCE_DECOMPRESS_X2 are mutually exclusive)
endif
endif

RUST_HUF_FEATURE :=
RUST_BUILD_CONFIG := default
ifneq ($(RUST_HUF_FORCE_X1),0)
RUST_HUF_FEATURE := huf-force-decompress-x1
RUST_BUILD_CONFIG := huf-force-decompress-x1
endif
ifneq ($(RUST_HUF_FORCE_X2),0)
RUST_HUF_FEATURE := huf-force-decompress-x2
RUST_BUILD_CONFIG := huf-force-decompress-x2
endif

# The fuzz build compiles every legacy translation unit selected by
# libzstd.mk.  Those files are declaration-only shims in the Rust migration,
# so mirror the selected C decoder set in the Rust archive as well.
RUST_LEGACY_FEATURES :=
ifneq ($(ZSTD_LEGACY_SUPPORT),0)
ifeq ($(shell test $(ZSTD_LEGACY_SUPPORT) -lt 8; echo $$?),0)
RUST_LEGACY_FEATURES := $(addprefix legacy-v0,$(wordlist $(ZSTD_LEGACY_SUPPORT),7,1 2 3 4 5 6 7))
endif
endif
ifneq ($(strip $(RUST_LEGACY_FEATURES)),)
RUST_BUILD_CONFIG := $(RUST_BUILD_CONFIG)-legacy$(ZSTD_LEGACY_SUPPORT)
endif

RUST_FEATURES := $(strip $(RUST_HUF_FEATURE) $(RUST_LEGACY_FEATURES))

RUST_TARGET_DIR := $(RUST_DIR)/target/fuzz/$(RUST_BUILD_CONFIG)
RUST_CARGO_FLAGS := --manifest-path $(RUST_MANIFEST) --release \
                    --target-dir $(RUST_TARGET_DIR)
ifneq ($(RUST_FEATURES),)
RUST_CARGO_FLAGS += --features "$(RUST_FEATURES)"
endif

# The shared program utility shim is declaration-only too.  Link the same
# helpers-only CLI archive as the normal C tests so fuzz regression drivers can
# resolve UTIL_* without pulling in the parser or fileio backend.
RUST_CLI_DIR := ../../rust/cli
RUST_CLI_MANIFEST := $(RUST_CLI_DIR)/Cargo.toml
RUST_CLI_HELPER_SOURCES := $(RUST_CLI_MANIFEST) $(RUST_CLI_DIR)/Cargo.lock \
                           $(RUST_CLI_DIR)/src/lib.rs \
                           $(RUST_DIR)/src/timefn.rs $(RUST_DIR)/src/benchfn.rs \
                           $(RUST_DIR)/src/datagen.rs $(RUST_DIR)/src/lorem.rs \
                           $(RUST_DIR)/src/util.rs
RUST_CLI_HELPERS_TARGET_DIR := $(RUST_DIR)/target/fuzz-cli-helpers
RUST_CLI_HELPERS_STATICLIB := $(RUST_CLI_HELPERS_TARGET_DIR)/release/libzstd_cli_rs.a
RUST_CLI_HELPERS_CARGO_FLAGS := --manifest-path $(RUST_CLI_MANIFEST) --release \
                                --target-dir $(RUST_CLI_HELPERS_TARGET_DIR) \
                                --no-default-features --features helpers

$(RUST_CLI_HELPERS_STATICLIB): $(RUST_CLI_HELPER_SOURCES)
	$(CARGO) build $(RUST_CLI_HELPERS_CARGO_FLAGS)

# Keep a 32-bit C/C++ fuzz invocation from linking a native-width Cargo
# archive.  Cross builds may select any supported Cargo target explicitly.
RUST_TARGET ?=
ifeq ($(strip $(RUST_TARGET)),)
ifneq ($(filter -m32,$(CC) $(CXX) $(CPPFLAGS) $(CFLAGS) $(CXXFLAGS) $(LDFLAGS) $(MOREFLAGS)),)
RUST_TARGET := i686-unknown-linux-gnu
endif
endif
RUST_TARGET_COMPONENT :=
ifneq ($(strip $(RUST_TARGET)),)
RUST_CARGO_FLAGS += --target $(RUST_TARGET)
RUST_TARGET_COMPONENT := /$(RUST_TARGET)
endif
RUST_STATICLIB := $(RUST_TARGET_DIR)$(RUST_TARGET_COMPONENT)/release/libzstd_rs.a

$(RUST_STATICLIB): $(RUST_SOURCES)
	$(CARGO) build $(RUST_CARGO_FLAGS)

# `rt_` and `d_` object names are flat. Rebuild them whenever a forced HUF
# mode changes instead of mixing a stale C decoder with another Rust archive.
RUST_HUF_C_MODE_FILE := $(RUST_DIR)/target/.huf-c-mode-fuzz
RUST_HUF_C_MODE_STAMP := $(RUST_DIR)/target/.huf-c-mode-fuzz.a
.PHONY: FORCE_RUST_HUF_C_MODE
FORCE_RUST_HUF_C_MODE:
$(RUST_HUF_C_MODE_STAMP): FORCE_RUST_HUF_C_MODE
	@mkdir -p $(@D)
	@if test ! -r $(RUST_HUF_C_MODE_FILE) \
		|| test "$$(cat $(RUST_HUF_C_MODE_FILE))" != "$(RUST_BUILD_CONFIG)" \
		|| test ! -f $@; then \
		printf '%s\n' "$(RUST_BUILD_CONFIG)" > $(RUST_HUF_C_MODE_FILE); \
		$(AR) rcs $@; \
		touch $@; \
	fi

# Recipes below already append LIB_FUZZING_ENGINE. Preserve user-provided
# engines but place the Rust archive ahead of them and after C objects.
LIB_FUZZING_ENGINE := $(RUST_STATICLIB) $(FUZZING_ENGINE) $(RUST_CLI_HELPERS_STATICLIB)

PRGDIR = ../../programs
CONTRIBDIR = ../../contrib

DEFAULT_SEQ_PROD_DIR = $(CONTRIBDIR)/externalSequenceProducer
DEFAULT_SEQ_PROD_SRC = $(DEFAULT_SEQ_PROD_DIR)/sequence_producer.c
THIRD_PARTY_SEQ_PROD_OBJ ?=

FUZZ_CPPFLAGS := -I$(LIB_SRCDIR) -I$(LIB_SRCDIR)/common -I$(LIB_SRCDIR)/compress \
	-I$(LIB_SRCDIR)/dictBuilder -I$(LIB_SRCDIR)/deprecated -I$(LIB_SRCDIR)/legacy \
	-I$(CONTRIBDIR)/seekable_format -I$(PRGDIR) -I$(DEFAULT_SEQ_PROD_DIR) \
	-DZSTD_MULTITHREAD -DZSTD_LEGACY_SUPPORT=1 $(CPPFLAGS)
FUZZ_EXTRA_FLAGS := -Wall -Wextra -Wcast-qual -Wcast-align -Wshadow \
	-Wstrict-aliasing=1 -Wswitch-enum -Wdeclaration-after-statement \
	-Wstrict-prototypes -Wundef \
	-Wvla -Wformat=2 -Winit-self -Wfloat-equal -Wwrite-strings \
	-Wredundant-decls -Wno-deprecated-declarations \
	-g -fno-omit-frame-pointer
FUZZ_CFLAGS := $(FUZZ_EXTRA_FLAGS) $(CFLAGS)
FUZZ_ASFLAGS := $(FUZZ_EXTRA_FLAGS) $(ASFLAGS)
FUZZ_CXXFLAGS := $(FUZZ_EXTRA_FLAGS) -std=c++11 $(CXXFLAGS)
FUZZ_LDFLAGS := -pthread $(LDFLAGS)
FUZZ_ARFLAGS := $(ARFLAGS)
FUZZ_TARGET_FLAGS = $(FUZZ_CPPFLAGS) $(FUZZ_CXXFLAGS) $(FUZZ_LDFLAGS)

FUZZ_ROUND_TRIP_FLAGS := -DFUZZING_ASSERT_VALID_SEQUENCE

FUZZ_HEADERS := fuzz_helpers.h fuzz.h zstd_helpers.h fuzz_data_producer.h
FUZZ_SRC := $(PRGDIR)/util.c ./fuzz_helpers.c ./zstd_helpers.c ./fuzz_data_producer.c

SEEKABLE_HEADERS = $(CONTRIBDIR)/seekable_format/zstd_seekable.h
SEEKABLE_OBJS = $(CONTRIBDIR)/seekable_format/zstdseek_compress.c $(CONTRIBDIR)/seekable_format/zstdseek_decompress.c

ZSTDCOMMON_SRC := $(ZSTD_COMMON_FILES)
ZSTDCOMP_SRC   := $(ZSTD_COMPRESS_FILES)
ZSTDDECOMP_SRC := $(ZSTD_DECOMPRESS_FILES)
ZSTDDICT_SRC := $(ZSTD_DICTBUILDER_FILES)
ZSTDLEGACY_SRC := $(ZSTD_LEGACY_FILES)
FUZZ_SRC       := \
	$(FUZZ_SRC) \
	$(ZSTDDECOMP_SRC) \
	$(ZSTDCOMMON_SRC) \
	$(ZSTDCOMP_SRC) \
	$(ZSTDDICT_SRC) \
	$(ZSTDLEGACY_SRC) \
	$(DEFAULT_SEQ_PROD_SRC)
FUZZ_SRC := $(sort $(wildcard $(FUZZ_SRC)))

FUZZ_D_OBJ1 := $(subst $(LIB_SRCDIR)/common/,d_lib_common_,$(FUZZ_SRC))
FUZZ_D_OBJ2 := $(subst $(LIB_SRCDIR)/compress/,d_lib_compress_,$(FUZZ_D_OBJ1))
FUZZ_D_OBJ3 := $(subst $(LIB_SRCDIR)/decompress/,d_lib_decompress_,$(FUZZ_D_OBJ2))
FUZZ_D_OBJ4 := $(subst $(LIB_SRCDIR)/dictBuilder/,d_lib_dictBuilder_,$(FUZZ_D_OBJ3))
FUZZ_D_OBJ5 := $(subst $(LIB_SRCDIR)/legacy/,d_lib_legacy_,$(FUZZ_D_OBJ4))
FUZZ_D_OBJ6 := $(subst $(PRGDIR)/,d_prg_,$(FUZZ_D_OBJ5))
FUZZ_D_OBJ7 := $(subst $(DEFAULT_SEQ_PROD_DIR)/,d_default_seq_prod_,$(FUZZ_D_OBJ6))
FUZZ_D_OBJ8 := $(subst $\./,d_fuzz_,$(FUZZ_D_OBJ7))
FUZZ_D_OBJ9 := $(FUZZ_D_OBJ8:.c=.o)
FUZZ_D_OBJ10 := $(THIRD_PARTY_SEQ_PROD_OBJ) $(FUZZ_D_OBJ9)
FUZZ_DECOMPRESS_OBJ := $(FUZZ_D_OBJ10:.S=.o)

FUZZ_RT_OBJ1 := $(subst $(LIB_SRCDIR)/common/,rt_lib_common_,$(FUZZ_SRC))
FUZZ_RT_OBJ2 := $(subst $(LIB_SRCDIR)/compress/,rt_lib_compress_,$(FUZZ_RT_OBJ1))
FUZZ_RT_OBJ3 := $(subst $(LIB_SRCDIR)/decompress/,rt_lib_decompress_,$(FUZZ_RT_OBJ2))
FUZZ_RT_OBJ4 := $(subst $(LIB_SRCDIR)/dictBuilder/,rt_lib_dictBuilder_,$(FUZZ_RT_OBJ3))
FUZZ_RT_OBJ5 := $(subst $(LIB_SRCDIR)/legacy/,rt_lib_legacy_,$(FUZZ_RT_OBJ4))
FUZZ_RT_OBJ6 := $(subst $(PRGDIR)/,rt_prg_,$(FUZZ_RT_OBJ5))
FUZZ_RT_OBJ7 := $(subst $(DEFAULT_SEQ_PROD_DIR)/,rt_default_seq_prod_,$(FUZZ_RT_OBJ6))
FUZZ_RT_OBJ8 := $(subst $\./,rt_fuzz_,$(FUZZ_RT_OBJ7))
FUZZ_RT_OBJ9 := $(FUZZ_RT_OBJ8:.c=.o)
FUZZ_RT_OBJ10 := $(THIRD_PARTY_SEQ_PROD_OBJ) $(FUZZ_RT_OBJ9)
FUZZ_ROUND_TRIP_OBJ := $(FUZZ_RT_OBJ10:.S=.o)

$(FUZZ_DECOMPRESS_OBJ) $(FUZZ_ROUND_TRIP_OBJ): $(RUST_HUF_C_MODE_STAMP)

FUZZ_TARGETS :=       \
	simple_round_trip \
	stream_round_trip \
	block_round_trip  \
	simple_decompress \
	stream_decompress \
	block_decompress  \
	dictionary_round_trip \
	dictionary_decompress \
	zstd_frame_info \
	simple_compress \
	dictionary_loader \
	raw_dictionary_round_trip \
	dictionary_stream_round_trip \
	decompress_dstSize_tooSmall \
	fse_read_ncount \
	sequence_compression_api \
	seekable_roundtrip \
	huf_round_trip \
	huf_decompress \
	decompress_cross_format \
	generate_sequences

.PHONY: all clean cleanall
all: libregression.a $(FUZZ_TARGETS)

$(FUZZ_TARGETS): $(RUST_STATICLIB) $(RUST_CLI_HELPERS_STATICLIB) $(RUST_HUF_C_MODE_STAMP)
ifneq ($(filter libregression.a,$(FUZZING_ENGINE)),)
$(FUZZ_TARGETS): libregression.a
endif

rt_lib_common_%.o: $(LIB_SRCDIR)/common/%.c
	$(CC) $(FUZZ_CPPFLAGS) $(FUZZ_CFLAGS) $(FUZZ_ROUND_TRIP_FLAGS) $< -c -o $@

rt_lib_compress_%.o: $(LIB_SRCDIR)/compress/%.c
	$(CC) $(FUZZ_CPPFLAGS) $(FUZZ_CFLAGS) $(FUZZ_ROUND_TRIP_FLAGS) $< -c -o $@

rt_lib_decompress_%.o: $(LIB_SRCDIR)/decompress/%.c
	$(CC) $(FUZZ_CPPFLAGS) $(FUZZ_CFLAGS) $(FUZZ_ROUND_TRIP_FLAGS) $< -c -o $@

rt_lib_decompress_%.o: $(LIB_SRCDIR)/decompress/%.S
	$(CC) $(FUZZ_CPPFLAGS) $(FUZZ_ASFLAGS) $(FUZZ_ROUND_TRIP_FLAGS) $< -c -o $@

rt_lib_dictBuilder_%.o: $(LIB_SRCDIR)/dictBuilder/%.c
	$(CC) $(FUZZ_CPPFLAGS) $(FUZZ_CFLAGS) $(FUZZ_ROUND_TRIP_FLAGS) $< -c -o $@

rt_lib_legacy_%.o: $(LIB_SRCDIR)/legacy/%.c
	$(CC) $(FUZZ_CPPFLAGS) $(FUZZ_CFLAGS) $(FUZZ_ROUND_TRIP_FLAGS) $< -c -o $@

rt_prg_%.o: $(PRGDIR)/%.c
	$(CC) $(FUZZ_CPPFLAGS) $(FUZZ_CFLAGS) $(FUZZ_ROUND_TRIP_FLAGS) $< -c -o $@

rt_fuzz_%.o: %.c
	$(CC) $(FUZZ_CPPFLAGS) $(FUZZ_CFLAGS) $(FUZZ_ROUND_TRIP_FLAGS) $< -c -o $@

rt_default_seq_prod_%.o: $(DEFAULT_SEQ_PROD_DIR)/%.c
	$(CC) $(FUZZ_CPPFLAGS) $(FUZZ_CFLAGS) $(FUZZ_ROUND_TRIP_FLAGS) $< -c -o $@

d_lib_common_%.o: $(LIB_SRCDIR)/common/%.c
	$(CC) $(FUZZ_CPPFLAGS) $(FUZZ_CFLAGS) $< -c -o $@

d_lib_compress_%.o: $(LIB_SRCDIR)/compress/%.c
	$(CC) $(FUZZ_CPPFLAGS) $(FUZZ_CFLAGS) $< -c -o $@

d_lib_decompress_%.o: $(LIB_SRCDIR)/decompress/%.c
	$(CC) $(FUZZ_CPPFLAGS) $(FUZZ_CFLAGS) $< -c -o $@

d_lib_decompress_%.o: $(LIB_SRCDIR)/decompress/%.S
	$(CC) $(FUZZ_CPPFLAGS) $(FUZZ_ASFLAGS) $< -c -o $@

d_lib_dictBuilder_%.o: $(LIB_SRCDIR)/dictBuilder/%.c
	$(CC) $(FUZZ_CPPFLAGS) $(FUZZ_CFLAGS) $< -c -o $@

d_lib_legacy_%.o: $(LIB_SRCDIR)/legacy/%.c
	$(CC) $(FUZZ_CPPFLAGS) $(FUZZ_CFLAGS) $< -c -o $@

d_prg_%.o: $(PRGDIR)/%.c
	$(CC) $(FUZZ_CPPFLAGS) $(FUZZ_CFLAGS) $< -c -o $@

d_fuzz_%.o: %.c
	$(CC) $(FUZZ_CPPFLAGS) $(FUZZ_CFLAGS) $< -c -o $@

d_default_seq_prod_%.o: $(DEFAULT_SEQ_PROD_DIR)/%.c
	$(CC) $(FUZZ_CPPFLAGS) $(FUZZ_CFLAGS) $< -c -o $@

simple_round_trip: $(FUZZ_HEADERS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_simple_round_trip.o
	$(CXX) $(FUZZ_TARGET_FLAGS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_simple_round_trip.o $(LIB_FUZZING_ENGINE) -o $@

stream_round_trip: $(FUZZ_HEADERS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_stream_round_trip.o
	$(CXX) $(FUZZ_TARGET_FLAGS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_stream_round_trip.o $(LIB_FUZZING_ENGINE) -o $@

block_round_trip: $(FUZZ_HEADERS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_block_round_trip.o
	$(CXX) $(FUZZ_TARGET_FLAGS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_block_round_trip.o $(LIB_FUZZING_ENGINE) -o $@

simple_decompress: $(FUZZ_HEADERS) $(FUZZ_DECOMPRESS_OBJ) d_fuzz_simple_decompress.o
	$(CXX) $(FUZZ_TARGET_FLAGS) $(FUZZ_DECOMPRESS_OBJ) d_fuzz_simple_decompress.o $(LIB_FUZZING_ENGINE) -o $@

stream_decompress: $(FUZZ_HEADERS) $(FUZZ_DECOMPRESS_OBJ) d_fuzz_stream_decompress.o
	$(CXX) $(FUZZ_TARGET_FLAGS) $(FUZZ_DECOMPRESS_OBJ) d_fuzz_stream_decompress.o $(LIB_FUZZING_ENGINE) -o $@

block_decompress: $(FUZZ_HEADERS) $(FUZZ_DECOMPRESS_OBJ) d_fuzz_block_decompress.o
	$(CXX) $(FUZZ_TARGET_FLAGS) $(FUZZ_DECOMPRESS_OBJ) d_fuzz_block_decompress.o $(LIB_FUZZING_ENGINE) -o $@

dictionary_round_trip: $(FUZZ_HEADERS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_dictionary_round_trip.o
	$(CXX) $(FUZZ_TARGET_FLAGS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_dictionary_round_trip.o $(LIB_FUZZING_ENGINE) -o $@

raw_dictionary_round_trip: $(FUZZ_HEADERS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_raw_dictionary_round_trip.o
	$(CXX) $(FUZZ_TARGET_FLAGS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_raw_dictionary_round_trip.o $(LIB_FUZZING_ENGINE) -o $@

dictionary_stream_round_trip: $(FUZZ_HEADERS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_dictionary_stream_round_trip.o
	$(CXX) $(FUZZ_TARGET_FLAGS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_dictionary_stream_round_trip.o $(LIB_FUZZING_ENGINE) -o $@

dictionary_decompress: $(FUZZ_HEADERS) $(FUZZ_DECOMPRESS_OBJ) d_fuzz_dictionary_decompress.o
	$(CXX) $(FUZZ_TARGET_FLAGS) $(FUZZ_DECOMPRESS_OBJ) d_fuzz_dictionary_decompress.o $(LIB_FUZZING_ENGINE) -o $@

simple_compress: $(FUZZ_HEADERS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_simple_compress.o
	$(CXX) $(FUZZ_TARGET_FLAGS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_simple_compress.o $(LIB_FUZZING_ENGINE) -o $@

zstd_frame_info: $(FUZZ_HEADERS) $(FUZZ_DECOMPRESS_OBJ) d_fuzz_zstd_frame_info.o
	$(CXX) $(FUZZ_TARGET_FLAGS) $(FUZZ_DECOMPRESS_OBJ) d_fuzz_zstd_frame_info.o $(LIB_FUZZING_ENGINE) -o $@

dictionary_loader: $(FUZZ_HEADERS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_dictionary_loader.o
	$(CXX) $(FUZZ_TARGET_FLAGS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_dictionary_loader.o $(LIB_FUZZING_ENGINE) -o $@

decompress_dstSize_tooSmall: $(FUZZ_HEADERS) $(FUZZ_DECOMPRESS_OBJ) d_fuzz_decompress_dstSize_tooSmall.o
	$(CXX) $(FUZZ_TARGET_FLAGS) $(FUZZ_DECOMPRESS_OBJ) d_fuzz_decompress_dstSize_tooSmall.o $(LIB_FUZZING_ENGINE) -o $@

fse_read_ncount: $(FUZZ_HEADERS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_fse_read_ncount.o
	$(CXX) $(FUZZ_TARGET_FLAGS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_fse_read_ncount.o $(LIB_FUZZING_ENGINE) -o $@

sequence_compression_api: $(FUZZ_HEADERS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_sequence_compression_api.o
	$(CXX) $(FUZZ_TARGET_FLAGS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_sequence_compression_api.o $(LIB_FUZZING_ENGINE) -o $@

seekable_roundtrip: $(FUZZ_HEADERS) $(SEEKABLE_HEADERS) $(FUZZ_ROUND_TRIP_OBJ) $(SEEKABLE_OBJS)  rt_fuzz_seekable_roundtrip.o
	$(CXX) $(FUZZ_TARGET_FLAGS) $(FUZZ_ROUND_TRIP_OBJ) $(SEEKABLE_OBJS) rt_fuzz_seekable_roundtrip.o $(LIB_FUZZING_ENGINE) -o $@

huf_round_trip: $(FUZZ_HEADERS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_huf_round_trip.o
	$(CXX) $(FUZZ_TARGET_FLAGS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_huf_round_trip.o $(LIB_FUZZING_ENGINE) -o $@

huf_decompress: $(FUZZ_HEADERS) $(FUZZ_DECOMPRESS_OBJ) d_fuzz_huf_decompress.o
	$(CXX) $(FUZZ_TARGET_FLAGS) $(FUZZ_DECOMPRESS_OBJ) d_fuzz_huf_decompress.o $(LIB_FUZZING_ENGINE) -o $@

decompress_cross_format: $(FUZZ_HEADERS) $(FUZZ_DECOMPRESS_OBJ) d_fuzz_decompress_cross_format.o
	$(CXX) $(FUZZ_TARGET_FLAGS) $(FUZZ_DECOMPRESS_OBJ) d_fuzz_decompress_cross_format.o $(LIB_FUZZING_ENGINE) -o $@

generate_sequences: $(FUZZ_HEADERS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_generate_sequences.o
	$(CXX) $(FUZZ_TARGET_FLAGS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_generate_sequences.o $(LIB_FUZZING_ENGINE) -o $@

libregression.a: $(FUZZ_HEADERS) $(PRGDIR)/util.h $(PRGDIR)/util.c d_fuzz_regression_driver.o
	$(AR) $(FUZZ_ARFLAGS) $@ d_fuzz_regression_driver.o

corpora/%_seed_corpus.zip:
	@mkdir -p corpora
	$(DOWNLOAD) $@ $(CORPORA_URL_PREFIX)$*_seed_corpus.zip

corpora/%: corpora/%_seed_corpus.zip
	unzip -q $^ -d $@

.PHONY: corpora
corpora: $(patsubst %,corpora/%,$(FUZZ_TARGETS))

.PHONY: seedcorpora
seedcorpora: $(patsubst %,corpora/%_seed_corpus.zip,$(FUZZ_TARGETS))

REGRESSION_TARGET ?= all
regressiontest: corpora
	CC="$(CC)" CXX="$(CXX)" CFLAGS="$(CFLAGS)" CXXFLAGS="$(CXXFLAGS)" LDFLAGS="$(LDFLAGS)" $(PYTHON) ./fuzz.py build $(REGRESSION_TARGET) --debug=$(DEBUGLEVEL)
	$(PYTHON) ./fuzz.py regression $(REGRESSION_TARGET)

clean:
	@$(RM) *.a *.o $(FUZZ_TARGETS) $(RUST_HUF_C_MODE_FILE) $(RUST_HUF_C_MODE_STAMP)
	@echo Cleaning completed

cleanall:
	@$(RM) -r Fuzzer
	@$(RM) -r corpora
	@echo Cleaning completed