[ptxdist] [PATCH 2/2] kernel/perf: enable zstd support

[Michael Tretter <m.tretter@pengutronix.de>]

The Linux kernel Commit 44b44ffd5dce ("perf build: Minor improvement for
linking libzstd") adds a test if libzstd is installed and uses this as
heuristic if libelf is build with zstd support. Thus, if zstd is
installed, perf cannot be built without zstd support anymore.

Always build perf with zstd support and make sure that libelf is built
with zstd, too.

Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
---
 rules/kernel.in   | 1 +
 rules/kernel.make | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/rules/kernel.in b/rules/kernel.in
index 46c2267b6df3..488b08e25016 100644
--- a/rules/kernel.in
+++ b/rules/kernel.in
@@ -3,6 +3,7 @@
 menuconfig KERNEL
 	bool "kernel tools                  "
 	select LIBELF			if KERNEL_TOOL_PERF
+	select LIBELF_ZSTD		if KERNEL_TOOL_PERF
 	select LIBELF_LIBDW		if KERNEL_TOOL_PERF
 	select SLANG			if KERNEL_TOOL_PERF
 	select BINUTILS			if KERNEL_TOOL_PERF
diff --git a/rules/kernel.make b/rules/kernel.make
index f38661301d91..19b05811def2 100644
--- a/rules/kernel.make
+++ b/rules/kernel.make
@@ -229,7 +229,7 @@ KERNEL_TOOL_PERF_OPTS	:= \
 	NO_ZLIB= \
 	NO_LIBBABELTRACE=1 \
 	NO_LZMA=1 \
-	NO_LIBZSTD=1 \
+	NO_LIBZSTD= \
 	NO_AUXTRACE= \
 	NO_LIBBPF=1 \
 	NO_SDT=1 \
-- 
2.39.5