[PATCH v3 3/3] bpftool: Link zstd lib required by libelf

[Leo Yan]

When the feature libelf-zstd is detected, the zstd lib is required by
libelf.  Link the zstd lib in this case.

Signed-off-by: Leo Yan <leo.yan@xxxxxxx>
Tested-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Acked-by: Andrii Nakryiko <andrii@xxxxxxxxxx>
---
 tools/bpf/bpftool/Makefile | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/tools/bpf/bpftool/Makefile b/tools/bpf/bpftool/Makefile
index a4263dfb5e03..dd9f3ec84201 100644
--- a/tools/bpf/bpftool/Makefile
+++ b/tools/bpf/bpftool/Makefile
@@ -106,6 +106,7 @@ FEATURE_TESTS += libbfd-liberty
 FEATURE_TESTS += libbfd-liberty-z
 FEATURE_TESTS += disassembler-four-args
 FEATURE_TESTS += disassembler-init-styled
+FEATURE_TESTS += libelf-zstd
 
 FEATURE_DISPLAY := clang-bpf-co-re
 FEATURE_DISPLAY += llvm
@@ -132,6 +133,12 @@ endif
 
 LIBS = $(LIBBPF) -lelf -lz
 LIBS_BOOTSTRAP = $(LIBBPF_BOOTSTRAP) -lelf -lz
+
+ifeq ($(feature-libelf-zstd),1)
+LIBS += -lzstd
+LIBS_BOOTSTRAP += -lzstd
+endif
+
 ifeq ($(feature-libcap), 1)
 CFLAGS += -DUSE_LIBCAP
 LIBS += -lcap
-- 
2.34.1