linux-kernel - [PATCH v1] kbuild: Use '-f' instead of '--file=' for grep

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Message-ID: <20221025201744.1155260-1-willmcvicker@google.com>
Date:   Tue, 25 Oct 2022 13:17:43 -0700
From:   Will McVicker <willmcvicker@...gle.com>
To:     Masahiro Yamada <masahiroy@...nel.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nick Desaulniers <ndesaulniers@...gle.com>
Cc:     kernel-team@...roid.com, Will McVicker <willmcvicker@...gle.com>,
        linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v1] kbuild: Use '-f' instead of '--file=' for grep

The posix grep utility doesn't support the longer '--file=pattern_file'
command line option which was introduced in commit ce697ccee1a8
("kbuild: remove head-y syntax"). Let's update Makefile to use '-f
pattern_file' to fix the compiling error:

  grep: Unknown option 'file=.../scripts/head-object-list.txt'
  (see "grep --help")

Signed-off-by: Will McVicker <willmcvicker@...gle.com>
---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

base-commit: 1a2dcbdde82e3a5f1db9b2f4c48aa1aeba534fb2

diff --git a/Makefile b/Makefile
index d148a55bfd0f..e90bb2b38607 100644
--- a/Makefile
+++ b/Makefile
@@ -1218,7 +1218,7 @@ quiet_cmd_ar_vmlinux.a = AR      $@
       cmd_ar_vmlinux.a = \
 	rm -f $@; \
 	$(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS); \
-	$(AR) mPiT $$($(AR) t $@ | head -n1) $@ $$($(AR) t $@ | grep -F --file=$(srctree)/scripts/head-object-list.txt)
+	$(AR) mPiT $$($(AR) t $@ | head -n1) $@ $$($(AR) t $@ | grep -F -f $(srctree)/scripts/head-object-list.txt)
 
 targets += vmlinux.a
 vmlinux.a: $(KBUILD_VMLINUX_OBJS) scripts/head-object-list.txt autoksyms_recursive FORCE
-- 
2.38.0.135.g90850a2211-goog