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+# ##########################################################################
+# LZ4 oss fuzzer - Makefile
+#
+# GPL v2 License
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# You can contact the author at :
+# - LZ4 homepage : http://www.lz4.org
+# - LZ4 source repository : https://github.com/lz4/lz4
+# ##########################################################################
+# compress_fuzzer : OSS Fuzz test tool
+# decompress_fuzzer : OSS Fuzz test tool
+# ##########################################################################
+
+LZ4DIR := ../lib
+LIB_FUZZING_ENGINE ?=
+
+DEBUGLEVEL?= 1
+DEBUGFLAGS = -g -DLZ4_DEBUG=$(DEBUGLEVEL)
+
+LZ4_CFLAGS = $(CFLAGS) $(DEBUGFLAGS) $(MOREFLAGS)
+LZ4_CXXFLAGS = $(CXXFLAGS) $(DEBUGFLAGS) $(MOREFLAGS)
+LZ4_CPPFLAGS = $(CPPFLAGS) -I$(LZ4DIR) -DXXH_NAMESPACE=LZ4_ \
+ -DFUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
+
+FUZZERS := \
+ compress_fuzzer \
+ decompress_fuzzer \
+ round_trip_fuzzer \
+ round_trip_stream_fuzzer \
+ compress_hc_fuzzer \
+ round_trip_hc_fuzzer \
+ compress_frame_fuzzer \
+ round_trip_frame_fuzzer \
+ decompress_frame_fuzzer
+
+.PHONY: all
+all: $(FUZZERS)
+
+# Include a rule to build the static library if calling this target
+# directly.
+$(LZ4DIR)/liblz4.a:
+ $(MAKE) -C $(LZ4DIR) CFLAGS="$(LZ4_CFLAGS)" liblz4.a
+
+%.o: %.c
+ $(CC) -c $(LZ4_CFLAGS) $(LZ4_CPPFLAGS) $< -o $@
+
+# Generic rule for generating fuzzers
+ifeq ($(LIB_FUZZING_ENGINE),)
+ LIB_FUZZING_DEPS := standaloneengine.o
+else
+ LIB_FUZZING_DEPS :=
+endif
+%_fuzzer: %_fuzzer.o lz4_helpers.o fuzz_data_producer.o $(LZ4DIR)/liblz4.a $(LIB_FUZZING_DEPS)
+ $(CXX) $(LZ4_CXXFLAGS) $(LZ4_CPPFLAGS) $(LDFLAGS) $(LIB_FUZZING_ENGINE) $^ -o $@$(EXT)
+
+%_fuzzer_clean:
+ $(RM) $*_fuzzer $*_fuzzer.o standaloneengine.o
+
+.PHONY: clean
+clean: compress_fuzzer_clean decompress_fuzzer_clean \
+ compress_frame_fuzzer_clean compress_hc_fuzzer_clean \
+ decompress_frame_fuzzer_clean round_trip_frame_fuzzer_clean \
+ round_trip_fuzzer_clean round_trip_hc_fuzzer_clean round_trip_stream_fuzzer_clean
+ $(MAKE) -C $(LZ4DIR) clean