commit 7f3bdbc3f13146eb9d07de81ea71f551587a384b
author Nathan Chancellor <nathan@kernel.org> Tue Feb 01 14:25:04 2022 -0700
committer Daniel Borkmann <daniel@iogearbox.net> Thu Feb 03 16:28:49 2022 +0100
tree 4915e1f1bc612a2a4a6985fb0d05485220ec9882
parent b293dcc473d22a62dc6d78de2b15e4f49515db56

tools/resolve_btfids: Do not print any commands when building silently

When building with 'make -s', there is some output from resolve_btfids:

$ make -sj"$(nproc)" oldconfig prepare
  MKDIR     .../tools/bpf/resolve_btfids/libbpf/
  MKDIR     .../tools/bpf/resolve_btfids//libsubcmd
  LINK     resolve_btfids

Silent mode means that no information should be emitted about what is
currently being done. Use the $(silent) variable from Makefile.include
to avoid defining the msg macro so that there is no information printed.

Fixes: fbbb68de80a4 ("bpf: Add resolve_btfids tool to resolve BTF IDs in ELF object")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20220201212503.731732-1-nathan@kernel.org

tools/bpf/resolve_btfids/Makefile

diff --git a/tools/bpf/resolve_btfids/Makefile b/tools/bpf/resolve_btfids/Makefile
index 9ddeca9..320a88a 100644
--- a/tools/bpf/resolve_btfids/Makefile
+++ b/tools/bpf/resolve_btfids/Makefile
@@ -9,7 +9,11 @@
   msg =
 else
   Q = @
-  msg = @printf '  %-8s %s%s\n' "$(1)" "$(notdir $(2))" "$(if $(3), $(3))";
+  ifeq ($(silent),1)
+    msg =
+  else
+    msg = @printf '  %-8s %s%s\n' "$(1)" "$(notdir $(2))" "$(if $(3), $(3))";
+  endif
   MAKEFLAGS=--no-print-directory
 endif