linux-kernel - [PATCH v2] kbuild: rpm-pkg: fix build error with CONFIG

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Date: Tue, 18 Jun 2024 20:08:43 +0900
From: Masahiro Yamada <masahiroy@...nel.org>
To: linux-kbuild@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
	Masahiro Yamada <masahiroy@...nel.org>,
	Nathan Chancellor <nathan@...nel.org>,
	Nicolas Schier <nicolas@...sle.eu>
Subject: [PATCH v2] kbuild: rpm-pkg: fix build error with CONFIG_MODULES=n

When CONFIG_MODULES is disabled, 'make (bin)rpm-pkg' fails:

  $ make allnoconfig binrpm-pkg
    [ snip ]
  error: File not found: .../linux/rpmbuild/BUILDROOT/kernel-6.10.0_rc3-1.i386/lib/modules/6.10.0-rc3/kernel
  error: File not found: .../linux/rpmbuild/BUILDROOT/kernel-6.10.0_rc3-1.i386/lib/modules/6.10.0-rc3/modules.order

Specify the directory path, /lib/modules/%{KERNELRELEASE}, instead of
individual files to make it work irrespective of CONFIG_MODULES.

However, doing so would cause new warnings:

  warning: File listed twice: /lib/modules/6.10.0-rc3-dirty/modules.alias
  warning: File listed twice: /lib/modules/6.10.0-rc3-dirty/modules.alias.bin
  warning: File listed twice: /lib/modules/6.10.0-rc3-dirty/modules.builtin.alias.bin
  warning: File listed twice: /lib/modules/6.10.0-rc3-dirty/modules.builtin.bin
  warning: File listed twice: /lib/modules/6.10.0-rc3-dirty/modules.dep
  warning: File listed twice: /lib/modules/6.10.0-rc3-dirty/modules.dep.bin
  warning: File listed twice: /lib/modules/6.10.0-rc3-dirty/modules.devname
  warning: File listed twice: /lib/modules/6.10.0-rc3-dirty/modules.softdep
  warning: File listed twice: /lib/modules/6.10.0-rc3-dirty/modules.symbols
  warning: File listed twice: /lib/modules/6.10.0-rc3-dirty/modules.symbols.bin

These files exist in /lib/modules/%{KERNELRELEASE} and are also explicitly
marked as %ghost.

Suppress depmod because depmod-generated files are not packaged.

Fixes: 615b3a3d2d41 ("kbuild: rpm-pkg: do not include depmod-generated files")
Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
---

Changes in v2:
  - Do not run depmod

 scripts/package/kernel.spec | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/scripts/package/kernel.spec b/scripts/package/kernel.spec
index e095eb1e290e..fffc8af8deb1 100644
--- a/scripts/package/kernel.spec
+++ b/scripts/package/kernel.spec
@@ -57,7 +57,8 @@ patch -p1 < %{SOURCE2}
 %install
 mkdir -p %{buildroot}/lib/modules/%{KERNELRELEASE}
 cp $(%{make} %{makeflags} -s image_name) %{buildroot}/lib/modules/%{KERNELRELEASE}/vmlinuz
-%{make} %{makeflags} INSTALL_MOD_PATH=%{buildroot} modules_install
+# DEPMOD=true makes depmod no-op. We do not package depmod-generated files.
+%{make} %{makeflags} INSTALL_MOD_PATH=%{buildroot} DEPMOD=true modules_install
 %{make} %{makeflags} INSTALL_HDR_PATH=%{buildroot}/usr headers_install
 cp System.map %{buildroot}/lib/modules/%{KERNELRELEASE}
 cp .config %{buildroot}/lib/modules/%{KERNELRELEASE}/config
@@ -70,10 +71,7 @@ ln -fns /usr/src/kernels/%{KERNELRELEASE} %{buildroot}/lib/modules/%{KERNELRELEA
 %endif
 
 {
-	for x in System.map config kernel modules.builtin \
-			modules.builtin.modinfo modules.order vmlinuz; do
-		echo "/lib/modules/%{KERNELRELEASE}/${x}"
-	done
+	echo "/lib/modules/%{KERNELRELEASE}"
 
 	for x in alias alias.bin builtin.alias.bin builtin.bin dep dep.bin \
 					devname softdep symbols symbols.bin; do
-- 
2.43.0