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+# ################################################################
+# Copyright (c) 2016-2020, Yann Collet, Facebook, Inc.
+# 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.
+# ################################################################
+
+ZSTD ?= zstd # note: requires zstd installation on local system
+
+UNAME?= $(shell uname)
+ifeq ($(UNAME), SunOS)
+DIFF ?= gdiff
+else
+DIFF ?= diff
+endif
+
+HARNESS_FILES=*.c
+
+MULTITHREAD_LDFLAGS = -pthread
+DEBUGFLAGS= -g -DZSTD_DEBUG=1
+CPPFLAGS += -I$(ZSTDDIR) -I$(ZSTDDIR)/common -I$(ZSTDDIR)/compress \
+ -I$(ZSTDDIR)/dictBuilder -I$(ZSTDDIR)/deprecated -I$(PRGDIR)
+CFLAGS ?= -O2
+CFLAGS += -Wall -Wextra -Wcast-qual -Wcast-align -Wshadow \
+ -Wstrict-aliasing=1 -Wswitch-enum \
+ -Wredundant-decls -Wstrict-prototypes -Wundef \
+ -Wvla -Wformat=2 -Winit-self -Wfloat-equal -Wwrite-strings \
+ -std=c99
+CFLAGS += $(DEBUGFLAGS)
+CFLAGS += $(MOREFLAGS)
+FLAGS = $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) $(MULTITHREAD_LDFLAGS)
+
+harness: $(HARNESS_FILES)
+ $(CC) $(FLAGS) $^ -o $@
+
+clean:
+ @$(RM) harness *.o
+ @$(RM) -rf harness.dSYM # MacOS specific
+
+test: harness
+ #
+ # Testing single-file decompression with educational decoder
+ #
+ @$(ZSTD) -f README.md -o tmp.zst
+ @./harness tmp.zst tmp
+ @$(DIFF) -s tmp README.md
+ @$(RM) tmp*
+ #
+ # Testing dictionary decompression with education decoder
+ #
+ # note : files are presented multiple for training, to reach minimum threshold
+ @$(ZSTD) --train harness.c zstd_decompress.c zstd_decompress.h README.md \
+ harness.c zstd_decompress.c zstd_decompress.h README.md \
+ harness.c zstd_decompress.c zstd_decompress.h README.md \
+ -o dictionary
+ @$(ZSTD) -f README.md -D dictionary -o tmp.zst
+ @./harness tmp.zst tmp dictionary
+ @$(DIFF) -s tmp README.md
+ @$(RM) tmp* dictionary