1 files changed, 73 insertions, 0 deletions
diff --git a/lib/libzstd/Makefile b/lib/libzstd/Makefile
new file mode 100644
index 000000000000..0e25f01d4881
--- /dev/null
+++ b/lib/libzstd/Makefile
@@ -0,0 +1,73 @@
+LIB=	zstd
+SRCS=	entropy_common.c \
+	error_private.c \
+	fse_decompress.c \
+	pool.c \
+	threading.c \
+	xxhash.c \
+	zstd_common.c \
+	fse_compress.c \
+	huf_compress.c \
+	zstd_compress.c \
+	zstd_compress_literals.c \
+	zstd_compress_sequences.c \
+	zstd_compress_superblock.c \
+	zstdmt_compress.c \
+	huf_decompress.c \
+	zstd_ddict.c \
+	zstd_decompress.c \
+	zstd_decompress_block.c \
+	zbuff_common.c \
+	zbuff_compress.c \
+	zbuff_decompress.c \
+	cover.c \
+	divsufsort.c \
+	zdict.c \
+	zstd_fast.c \
+	zstd_lazy.c \
+	zstd_ldm.c \
+	zstd_opt.c \
+	zstd_double_fast.c \
+	debug.c \
+	hist.c \
+	fastcover.c
+WARNS?=	2
+INCS=	zstd.h
+CFLAGS+=	-I${ZSTDDIR}/lib -I${ZSTDDIR}/lib/common -DXXH_NAMESPACE=ZSTD_ \
+		-DZSTD_MULTITHREAD=1 -fvisibility=hidden
+LIBADD=	pthread
+
+# ZSTD_ASM_SUPPORTED is 0 on FreeBSD but 1 on macOS and Linux. Since we build
+# this as a bootstrap library and don't include any assembly sources in SRCS,
+# explicitly disable assembly.
+CFLAGS+=	-DZSTD_DISABLE_ASM
+
+PRIVATELIB=	yes
+PACKAGE=	runtime
+
+ZSTDDIR=	${SRCTOP}/sys/contrib/zstd
+.PATH:	${ZSTDDIR}/lib/common ${ZSTDDIR}/lib/compress \
+	${ZSTDDIR}/lib/decompress ${ZSTDDIR}/lib/deprecated \
+	${ZSTDDIR}/lib/dictBuilder ${ZSTDDIR}/lib
+
+.include <bsd.compiler.mk>
+
+CFLAGS.huf_decompress.c+=	${NO_WBITWISE_INSTEAD_OF_LOGICAL}
+
+# https://github.com/facebook/zstd/commit/812e8f2a [zstd 1.4.1]
+# "Note that [GCC] autovectorization still does not do a good job on the
+# optimized version, so it's turned off via attribute and flag.  I found
+# that neither attribute nor command-line flag were entirely successful in
+# turning off vectorization, which is why there were both."
+.if ${COMPILER_TYPE} == "gcc"
+CFLAGS.zstd_decompress_block.c+=	-fno-tree-vectorize
+.endif
+
+# Work around lack of __bswap[sd]i2() intrinsics on riscv.  Probably should be
+# added to one of the runtime C libraries instead.
+.if ${MACHINE_CPUARCH} == "riscv"
+.PATH:	${ZSTDDIR}/lib/freebsd
+SRCS+=	zstd_kfreebsd.c
+.endif
+
+.include <bsd.lib.mk>