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From: Matthew Weber <matthew.weber@rockwellcollins.com>
To: buildroot@busybox.net
Subject: [Buildroot] [PATCH v2 10/12] core: allow to use Clang as cross-compiler
Date: Mon, 9 Sep 2019 09:29:31 -0500	[thread overview]
Message-ID: <CANQCQpaArjmSRm7t_y49Lt_L99sZfn2-pRND-hwnDLzpLqspMA@mail.gmail.com> (raw)
In-Reply-To: <20190907094027.9537-11-romain.naour@smile.fr>

Romain,

On Sat, Sep 7, 2019 at 4:40 AM Romain Naour <romain.naour@smile.fr> wrote:
>
> Add this new experimental option into "Advanced" menu since
> we are expecting some build and runtime issues for number of
> packages (bootloaders, kernel).
>
> Add host-clang as dependency in toolchain virtual package
> in order to be sure that the clang cross-compiler is built
> before generating Buildroot.cmake file from an
> TOOLCHAIN_CMAKE_INSTALL_FILES hook (defined in cmake package).
> Buildroot.cmake can be used by a cmake package as soon as
> the toolchain package is installed.
>
> Install the GCC external toolchain before executing
> realpath command by adding an explicit dependency on
> toolchain-external. Without this dependency, host-clang
> may be build before toolchain-external when
> BR2_USER_HOST_CLANG_AS_CROSS_COMPILER=y, so the realpath
> fail to set GCC_INSTALL_PREFIX leading to
> "crtbegin.o no such file or directory" error while linking
> applications.
>
> Only Glibc toolchain has been tested.
>
> Signed-off-by: Romain Naour <romain.naour@smile.fr>
> Cc: Matt Weber <matthew.weber@rockwellcollins.com>
> Cc: Valentin Korenblit <valentinkorenblit@gmail.com>

Did a build time test using the qemu aarch64 configuration, selecting
the prebuilt external toolchain and enabling the Clang as
cross-compiler option.

Tested-by: Matt Weber <matthew.weber@rockwellcollins.com>

  reply	other threads:[~2019-09-09 14:29 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-07  9:40 [Buildroot] [PATCH v2 00/12] Add the support for Clang cross-compiler Romain Naour
2019-09-07  9:40 ` [Buildroot] [PATCH v2 01/12] package/clang: help host-clang to find our external toolchain Romain Naour
2019-09-09 14:26   ` Matthew Weber
2020-08-29 19:00   ` Arnout Vandecappelle
2019-09-07  9:40 ` [Buildroot] [PATCH v2 02/12] package/llvm: add the version major variable Romain Naour
2020-08-29 19:00   ` Arnout Vandecappelle
2019-09-07  9:40 ` [Buildroot] [PATCH v2 03/12] package/clang: " Romain Naour
2019-09-07  9:40 ` [Buildroot] [PATCH v2 04/12] package/clang: install a toolchain-wrapper for the host clang cross-compiler Romain Naour
2020-08-29 19:40   ` Arnout Vandecappelle
2019-09-07  9:40 ` [Buildroot] [PATCH v2 05/12] linux: override CC for the case CC is not GCC Romain Naour
2020-08-30  7:57   ` Arnout Vandecappelle
2019-09-07  9:40 ` [Buildroot] [PATCH v2 06/12] package/meson: use TARGET_{CC, CXX} instead of TARGET_CROSS for cc and cpp Romain Naour
2019-09-07  9:40 ` [Buildroot] [PATCH v2 07/12] package/busybox: fix applets runtime issue when building with clang cross-compiler Romain Naour
2019-09-09 14:29   ` Matthew Weber
2020-08-29 20:21   ` Arnout Vandecappelle
2020-09-14 19:58     ` Romain Naour
2019-09-07  9:40 ` [Buildroot] [PATCH v2 08/12] package/clang: add a host entry for clang Romain Naour
2020-08-29 20:34   ` Arnout Vandecappelle
2019-09-07  9:40 ` [Buildroot] [PATCH v2 09/12] package/glibc: use GCC cross-compiler if Clang is used as cross-compiler Romain Naour
2019-09-07  9:40 ` [Buildroot] [PATCH v2 10/12] core: allow to use Clang " Romain Naour
2019-09-09 14:29   ` Matthew Weber [this message]
2020-08-29 21:13   ` Arnout Vandecappelle
2019-09-07  9:40 ` [Buildroot] [PATCH v2 11/12] toolchain: add a warning when Clang is used " Romain Naour
2019-09-07  9:40 ` [Buildroot] [PATCH v2 12/12] linux: don't set -Wno-attribute-alias flag " Romain Naour
2019-09-09 14:28   ` Matthew Weber
2020-08-29 18:53 ` [Buildroot] [PATCH v2 00/12] Add the support for Clang cross-compiler Arnout Vandecappelle
2020-09-14 19:53   ` Romain Naour

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