$NetBSD: patch-programs_Makefile,v 1.7 2020/06/14 13:51:55 adam Exp $

Use zstd shared library.

--- programs/Makefile.orig	2020-05-22 05:04:00.000000000 +0000
+++ programs/Makefile
@@ -172,12 +172,12 @@ zstd : CPPFLAGS += -DZSTD_LEGACY_SUPPORT
 ifneq (,$(filter Windows%,$(OS)))
 zstd : $(RES_FILE)
 endif
-zstd : $(ZSTDLIB_FILES) $(ZSTD_CLI_OBJ)
+zstd : $(ZSTD_CLI_OBJ)
 	@echo "$(THREAD_MSG)"
 	@echo "$(ZLIB_MSG)"
 	@echo "$(LZMA_MSG)"
 	@echo "$(LZ4_MSG)"
-	$(CC) $(FLAGS) $^ -o $@$(EXT) $(LDFLAGS)
+	$(CC) $(FLAGS) $^ -o $@$(EXT) $(LDFLAGS) -L$(ZSTDDIR) -lzstd
 
 .PHONY: zstd-release
 zstd-release: DEBUGFLAGS := -DBACKTRACE_ENABLE=0
