[PATCH] Makefile: Depend on elf/subdir_lib only if $(subdirs) has elf

From 53502db065395907835a86a023872ec5c699732e Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <[email protected]>
Date: Mon, 6 Jul 2026 08:51:10 +0800
Subject: [PATCH] Makefile: Depend on elf/subdir_lib only if $(subdirs) has elf

commit 7cac99621e9601f916121bcaa9b7734a2e4c2529
Author: Adhemerval Zanella <[email protected]>
Date:   Wed Jun 10 16:26:15 2026 -0300

    Makefile: Run the subdirectory recursion in parallel

added:

$(elf-objpfx)ld.so $(elf-objpfx)sofini.os $(elf-objpfx)interp.os: \
  | elf/subdir_lib ;

which doesn't work with

$ make check -jN subdirs=DIR

where DIR doesn't have elf.  Add such rule only if $(subdirs) has elf.
This fixes BZ #34355.

Signed-off-by: H.J. Lu <[email protected]>
---
 Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Makefile b/Makefile
index 54de425e9e..a6aabca691 100644
--- a/Makefile
+++ b/Makefile
@@ -614,8 +614,10 @@ ifeq (yes,$(build-shared))
 # builds them.  The explicit empty recipe (';') is required, a
 # prerequisite-only rule would send make on an implicitrule search and
 # have this level compile them itself with the wrong context.
+ifneq (,$(filter elf,$(subdirs)))
 $(elf-objpfx)ld.so $(elf-objpfx)sofini.os $(elf-objpfx)interp.os: \
   | elf/subdir_lib ;
+endif
 ifneq (,$(filter sunrpc,$(subdirs)))
 # Makerules explicit adds librpc_compat_pic.a as a dependency of
 # libc_pic.a.
-- 
2.55.0