linux-kernel - [PATCH] kbuild: rpm-pkg: add libelf-devel as alternative for BuildRequires

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Message-Id: <20221228191014.659746-1-masahiroy@kernel.org>
Date:   Thu, 29 Dec 2022 04:10:14 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     linux-kbuild@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        Alexander Gordeev <agordeev@...ux.ibm.com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Guoqing Jiang <guoqing.jiang@...ux.dev>,
        Ivan Vecera <ivecera@...hat.com>,
        Jonathan Toppins <jtoppins@...hat.com>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Nicolas Schier <nicolas@...sle.eu>,
        Íñigo Huguet <ihuguet@...hat.com>
Subject: [PATCH] kbuild: rpm-pkg: add libelf-devel as alternative for BuildRequires

Guoqing Jiang reports that openSUSE cannot compile the kernel rpm due
to "BuildRequires: elfutils-libelf-devel" added by commit 8818039f959b
("kbuild: add ability to make source rpm buildable using koji").
The relevant package name in openSUSE is libelf-devel.

Add it an alternative package.

BTW, if it is impossible to solve the build requirement, the final
resort would be:

    $ make RPMOPTS=--nodeps rpm-pkg

This passes --nodeps to the rpmbuild command so it will not verify
build dependencies. This is useful to test rpm builds on non-rpm
system. On Debian/Ubuntu, for example, you can install rpmbuild by
'apt-get install rpm'.

NOTE1:
  Likewise, it is possible to bypass the build dependency check for
  debian package builds:

    $ make DPKG_FLAGS=-d deb-pkg

NOTE2:
  The 'or' operator is supported since RPM 4.13. So, old distros such
  as CentOS 7 will break. I suggest installing newer rpmbuild in such
  cases.

Link: https://lore.kernel.org/linux-kbuild/ee227d24-9c94-bfa3-166a-4ee6b5dfea09@linux.dev/T/#u
Fixes: 8818039f959b ("kbuild: add ability to make source rpm buildable using koji")
Reported-by: Guoqing Jiang <guoqing.jiang@...ux.dev>
Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
---

 scripts/package/mkspec | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/scripts/package/mkspec b/scripts/package/mkspec
index dda00a948a01..adab28fa7f89 100755
--- a/scripts/package/mkspec
+++ b/scripts/package/mkspec
@@ -51,7 +51,8 @@ sed -e '/^DEL/d' -e 's/^\t*//' <<EOF
 	URL: https://www.kernel.org
 $S	Source: kernel-$__KERNELRELEASE.tar.gz
 	Provides: $PROVIDES
-$S	BuildRequires: bc binutils bison dwarves elfutils-libelf-devel flex
+$S	BuildRequires: bc binutils bison dwarves
+$S	BuildRequires: (elfutils-libelf-devel or libelf-devel) flex
 $S	BuildRequires: gcc make openssl openssl-devel perl python3 rsync
 
 	# $UTS_MACHINE as a fallback of _arch in case
-- 
2.34.1