This patch set allows for building the Linux kernel for arm64 in macOS with LLVM. Patches are based on previous Nick's work and suggestions [1][2][3] to enable build system in macOS hosts. Since macOS does not provide some of the headers available in the GNU C Library (glibc), the patches include a copy of these headers from glibc-2.40, with minor modifications detailed in the commit message. To set up the environment: * Provide build dependencies (installed via Homebrew): coreutils, findutils, gnu-sed, gnu-tar, grep, llvm, make and pkg-config. * A case sensitive volume for building: diskutil apfs addVolume /dev/disk<N> "Case-sensitive APFS" linux * And include in your PATH all GNU tools required by the Linux kernel as well as LLVM: PATH="/opt/homebrew/opt/coreutils/libexec/gnubin:$PATH" PATH="/opt/homebrew/opt/findutils/libexec/gnubin:$PATH" PATH="/opt/homebrew/opt/gnu-sed/libexec/gnubin:$PATH" PATH="/opt/homebrew/opt/gnu-tar/libexec/gnubin:$PATH" PATH="/opt/homebrew/opt/grep/libexec/gnubin:$PATH" PATH="/opt/homebrew/opt/make/libexec/gnubin:$PATH" PATH="/opt/homebrew/opt/llvm/bin:$PATH" * Start the build using LLVM: make LLVM=1 allyesconfig make LLVM=1 -j$(nproc) I believe other architectures could also be supported if we can move forward this initiative. Additionally, we could incorporate Rust support. I understand that Finn Behrens has some patches [4][5] based on Nick's previous work. [1]: WIP: build Linux on MacOS https://github.com/ClangBuiltLinux/linux/commit/f06333e29addbc3d714adb340355f471c1dfe95a [2] Subject: [PATCH] scripts: subarch.include: fix SUBARCH on MacOS hosts https://lore.kernel.org/all/20221113233812.36784-1-nick.desaulniers@xxxxxxxxx/ [3] Subject: Any interest in building the Linux kernel from a MacOS host? https://lore.kernel.org/all/CAH7mPvj64Scp6_Nbaj8KOfkoV5f7_N5L=Tv5Z9zGyn5SS+gsUw@xxxxxxxxxxxxxx/ [4] https://github.com/kloenk/linux/commits/rust-project_macos-dylib/ [5] https://kloenk.eu/posts/build-linux-on-m1-macos/ To: Masahiro Yamada <masahiroy@xxxxxxxxxx> To: Nathan Chancellor <nathan@xxxxxxxxxx> To: Nicolas Schier <nicolas@xxxxxxxxx> To: Lucas De Marchi <lucas.demarchi@xxxxxxxxx> To: Thomas Hellström <thomas.hellstrom@xxxxxxxxxxxxxxx> To: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx> To: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx> To: Maxime Ripard <mripard@xxxxxxxxxx> To: Thomas Zimmermann <tzimmermann@xxxxxxx> To: David Airlie <airlied@xxxxxxxxx> To: Daniel Vetter <daniel@xxxxxxxx> To: William Hubbs <w.d.hubbs@xxxxxxxxx> To: Chris Brannon <chris@xxxxxxxxxxxxxxxx> To: Kirk Reiser <kirk@xxxxxxxxxx> To: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx> To: Paul Moore <paul@xxxxxxxxxxxxxx> To: Stephen Smalley <stephen.smalley.work@xxxxxxxxx> To: Ondrej Mosnacek <omosnace@xxxxxxxxxx> To: Catalin Marinas <catalin.marinas@xxxxxxx> To: Will Deacon <will@xxxxxxxxxx> To: Marc Zyngier <maz@xxxxxxxxxx> To: Oliver Upton <oliver.upton@xxxxxxxxx> To: James Morse <james.morse@xxxxxxx> To: Suzuki K Poulose <suzuki.poulose@xxxxxxx> To: Zenghui Yu <yuzenghui@xxxxxxxxxx> To: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> To: Jiri Slaby <jirislaby@xxxxxxxxxx> To: Nick Desaulniers <ndesaulniers@xxxxxxxxxx> To: Bill Wendling <morbo@xxxxxxxxxx> To: Justin Stitt <justinstitt@xxxxxxxxxx> Cc: linux-kernel@xxxxxxxxxxxxxxx Cc: linux-kbuild@xxxxxxxxxxxxxxx Cc: intel-xe@xxxxxxxxxxxxxxxxxxxxx Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx Cc: speakup@xxxxxxxxxxxxxxxxx Cc: selinux@xxxxxxxxxxxxxxx Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx Cc: kvmarm@xxxxxxxxxxxxxxx Cc: linux-serial@xxxxxxxxxxxxxxx Cc: llvm@xxxxxxxxxxxxxxx Cc: Finn Behrens <me@xxxxxxxxxx> Cc: Daniel Gomez (Samsung) <d+samsung@xxxxxxxxxx> Cc: gost.dev@xxxxxxxxxxx Signed-off-by: Daniel Gomez <da.gomez@xxxxxxxxxxx> --- Daniel Gomez (11): kbuild: add header_install dependency to scripts file2alias: fix uuid_t definitions for macos drm/xe: xe_gen_wa_oob: fix program_invocation_short_name for macos accessiblity/speakup: genmap and makemapdata require linux/version.h selinux/genheaders: include bitsperlong and posix_types headers selinux/mdp: include bitsperlong and posix_types headers include: add elf.h support include: add endian.h support scripts/mod: add byteswap support tty/vt: conmakehash requires linux/limits.h scripts/kallsyms: add compatibility support for macos Nick Desaulniers (1): scripts: subarch.include: fix SUBARCH on MacOS hosts Makefile | 2 +- arch/arm64/kernel/pi/Makefile | 1 + arch/arm64/kernel/vdso32/Makefile | 1 + arch/arm64/kvm/hyp/nvhe/Makefile | 2 +- drivers/accessibility/speakup/Makefile | 2 + drivers/gpu/drm/xe/xe_gen_wa_oob.c | 8 +- drivers/tty/vt/Makefile | 1 + include/byteswap/byteswap.h | 35 + include/elf/elf.h | 4491 ++++++++++++++++++++++++++++++++ include/endian/bits/uintn-identity.h | 48 + include/endian/endian.h | 63 + scripts/Makefile | 3 +- scripts/kallsyms.c | 4 + scripts/mod/Makefile | 6 + scripts/mod/file2alias.c | 3 + scripts/selinux/genheaders/Makefile | 3 +- scripts/selinux/mdp/Makefile | 3 +- scripts/subarch.include | 3 +- 18 files changed, 4672 insertions(+), 7 deletions(-) --- base-commit: 1e391b34f6aa043c7afa40a2103163a0ef06d179 change-id: 20240807-macos-build-support-9ca0d77adb17 Best regards, -- Daniel Gomez <da.gomez@xxxxxxxxxxx>
