On Thu, 2022-03-03 at 11:13 +0000, Moessbauer, Felix wrote:
> Hi,
>
> the kernel header packages have a dependency to c/c++ compilers.
> E.g. the "linux-headers-5.10.0-10-arm64" package depends on gcc-
> 10:arm64 -> cpp-10:arm64 (on bullseye).
>
> This becomes an issue when cross-compiling kernel modules for other
> target architectures:
> The linux-headers packages cannot be co-installed due to the not co-
> installable cpp-<x> packages.
>
> By that, cross-compilation of kernel modules for other Debian targets
> is currently not possible (at least without removing the hosts cpp
> infrastructure).
>
> What is the reason to depend on compilers here?
We want installation of OOT modules to be as simple as possible for
those users that need it. A dependency makes this more robust.
> Wouldn't be a "recommends" relation be sufficient here?
> An alternative might also be to depend via `:native`, but I did not
> check that yet.
[...]
Using :native would defeat the purpose. But the attached patch
(untested) might fix the dependencies to allow for cross-compilation.
linux-kbuild does have some support for use in cross-compilation but I
don't know how well it works now.
Ben.
--
Ben Hutchings
Q. Which is the greater problem in the world today,
ignorance or apathy?
A. I don't know and I couldn't care less.
From ed870df3c0ab3d60aa60cf509ee6c3d10ab41276 Mon Sep 17 00:00:00 2001 From: Ben Hutchings <benh@debian.org> Date: Tue, 8 Mar 2022 00:44:38 +0100 Subject: [PATCH linux] linux-headers: Fix compiler dependencies to allow for cross-builds To: debian-kernel@lists.debian.org --- debian/changelog | 6 ++++++ debian/config/amd64/defines | 2 +- debian/config/arm64/defines | 2 +- debian/config/armel/defines | 2 +- debian/config/armhf/defines | 2 +- debian/config/defines | 1 + debian/config/i386/defines | 2 +- debian/config/s390x/defines | 2 +- 8 files changed, 13 insertions(+), 6 deletions(-) diff --git a/debian/changelog b/debian/changelog index a551e235a8b3..89210e4352c7 100644 --- a/debian/changelog +++ b/debian/changelog @@ -1,3 +1,9 @@ +linux (5.17~rc6-1~exp2) UNRELEASED; urgency=medium + + * linux-headers: Fix compiler dependencies to allow for cross-builds + + -- Ben Hutchings <benh@debian.org> Tue, 08 Mar 2022 00:44:34 +0100 + linux (5.17~rc6-1~exp1) experimental; urgency=medium * New upstream release candidate diff --git a/debian/config/amd64/defines b/debian/config/amd64/defines index 975efaa90b9c..7b9eb9fbe75e 100644 --- a/debian/config/amd64/defines +++ b/debian/config/amd64/defines @@ -15,7 +15,7 @@ install-stem: vmlinuz breaks: xserver-xorg-input-vmmouse (<< 1:13.0.99) [relations] -headers%gcc-11: linux-compiler-gcc-11-x86 +headers%gcc-11: linux-compiler-gcc-11-x86 | gcc-11-x86-64-linux-gnu [amd64_description] hardware: 64-bit PCs diff --git a/debian/config/arm64/defines b/debian/config/arm64/defines index dec69491a59c..f937ed24bb69 100644 --- a/debian/config/arm64/defines +++ b/debian/config/arm64/defines @@ -25,4 +25,4 @@ hardware-long: cloud platforms supporting arm64 virtual machines [relations] gcc-11: gcc-11 <!stage1 !cross !pkg.linux.nokernel>, gcc-11-aarch64-linux-gnu <!stage1 cross !pkg.linux.nokernel>, gcc-arm-linux-gnueabihf <!stage1 !pkg.linux.nokernel> -headers%gcc-11: gcc-11 +headers%gcc-11: gcc-11 | gcc-11-aarch64-linux-gnu diff --git a/debian/config/armel/defines b/debian/config/armel/defines index 031067afd01b..09440221cb66 100644 --- a/debian/config/armel/defines +++ b/debian/config/armel/defines @@ -13,7 +13,7 @@ uncompressed-image-file: arch/arm/boot/Image install-stem: vmlinuz [relations] -headers%gcc-11: linux-compiler-gcc-11-arm +headers%gcc-11: linux-compiler-gcc-11-arm | gcc-11-arm-linux-gnueabi [marvell_description] hardware: Marvell Kirkwood/Orion diff --git a/debian/config/armhf/defines b/debian/config/armhf/defines index 7607ea2d9f59..8c7d0c96ae9f 100644 --- a/debian/config/armhf/defines +++ b/debian/config/armhf/defines @@ -12,7 +12,7 @@ vdso: true install-stem: vmlinuz [relations] -headers%gcc-11: linux-compiler-gcc-11-arm +headers%gcc-11: linux-compiler-gcc-11-arm | gcc-11-arm-linux-gnueabihf [armmp_description] hardware: ARMv7 multiplatform compatible SoCs diff --git a/debian/config/defines b/debian/config/defines index 82e7c09bb89a..f3e1f0fc50d3 100644 --- a/debian/config/defines +++ b/debian/config/defines @@ -168,6 +168,7 @@ recommends: apparmor [relations] # compilers gcc-11: gcc-11 <!stage1 !cross !pkg.linux.nokernel>, gcc-11-@gnu-type-package@ <!stage1 cross !pkg.linux.nokernel> +headers%gcc-11: gcc-11 | gcc-11-@gnu-type-package@ # initramfs-generators initramfs-fallback: linux-initramfs-tool diff --git a/debian/config/i386/defines b/debian/config/i386/defines index d471d747d780..da729c4d2434 100644 --- a/debian/config/i386/defines +++ b/debian/config/i386/defines @@ -21,7 +21,7 @@ install-stem: vmlinuz breaks: xserver-xorg-input-vmmouse (<< 1:13.0.99) [relations] -headers%gcc-11: linux-compiler-gcc-11-x86 +headers%gcc-11: linux-compiler-gcc-11-x86 | gcc-11-i686-linux-gnu [686_description] hardware: older PCs diff --git a/debian/config/s390x/defines b/debian/config/s390x/defines index 922bd1acaab5..f3232842d346 100644 --- a/debian/config/s390x/defines +++ b/debian/config/s390x/defines @@ -13,7 +13,7 @@ bootloaders: s390-tools install-stem: vmlinuz [relations] -headers%gcc-11: linux-compiler-gcc-11-s390 +headers%gcc-11: linux-compiler-gcc-11-s390 | gcc-11-s390x-linux-gnu [s390x_description] hardware: IBM zSeries
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