[stalld v2 5/6] Makefile: Print BPF tool versions for debugging

[Wander Lairson Costa <wander@redhat.com>]

This commit adds informational messages to the Makefile to print the
kernel version, clang version, and bpftool version. This will help in
debugging BPF-related compilation issues by providing clear information
about the build environment.

Signed-off-by: Wander Lairson Costa <wander@redhat.com>
Cc: Derek Barbosa <debarbos@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Chunsheng Luo <luochunsheng@ustc.edu>
---
 Makefile | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Makefile b/Makefile
index ba67698..43eb9b8 100644
--- a/Makefile
+++ b/Makefile
@@ -121,6 +121,10 @@ VMLINUX_BTF_PATHS	:= /sys/kernel/btf/vmlinux /boot/vmlinux-$(KERNEL_REL)
 VMLINUX_BTF_PATH	:= $(or $(VMLINUX_BTF),$(firstword                            \
                                           $(wildcard $(VMLINUX_BTF_PATHS))))
 
+$(info KERNEL=$(KERNEL_REL))
+$(info $(shell $(CLANG) --version | head -1))
+$(info $(shell $(BPFTOOL) --version))
+
 ifeq ($(ARCH),x86_64)
 CLANGARCH="-D__x86_64__"
 endif
-- 
2.51.1