[Buildroot] [PATCH v2 3/6] package/riscv64-elf-toolchain: new package

[Alistair Francis]

On Mon, May 3, 2021 at 7:24 AM Thomas Petazzoni
<thomas.petazzoni at bootlin.com> wrote:
>
> This commit adds a new package for a prebuilt bare-metal toolchain for
> RISC-V 64-bit. Indeed, some bootloader/firmware for the BeagleV (and
> potentially later for other platforms?) do not build with a
> Linux-capable toolchain.
>
> This uses a pre-built toolchain from SiFive, precompiled for x86-64,
> so all packages using this toolchain must have the appropriate
> BR2_HOSTARCH dependency.
>
> This package is modeled after package/arm-gnu-a-toolchain/, which
> package a pre-built ARM32 bare-metal toolchain.
>
> Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
> ---
>  DEVELOPERS                                    |  1 +
>  .../riscv64-elf-toolchain.mk                  | 25 +++++++++++++++++++
>  2 files changed, 26 insertions(+)
>  create mode 100644 package/riscv64-elf-toolchain/riscv64-elf-toolchain.mk
>
> diff --git a/DEVELOPERS b/DEVELOPERS
> index cec63a3715..7ce78742fc 100644
> --- a/DEVELOPERS
> +++ b/DEVELOPERS
> @@ -2651,6 +2651,7 @@ F:        package/python3/
>  F:     package/python-mad/
>  F:     package/python-serial/
>  F:     package/qextserialport/
> +F:     package/riscv64-elf-toolchain/
>  F:     package/rpcbind/
>  F:     package/rt-tests/
>  F:     package/rtc-tools/
> diff --git a/package/riscv64-elf-toolchain/riscv64-elf-toolchain.mk b/package/riscv64-elf-toolchain/riscv64-elf-toolchain.mk
> new file mode 100644
> index 0000000000..9b08ee0fec
> --- /dev/null
> +++ b/package/riscv64-elf-toolchain/riscv64-elf-toolchain.mk
> @@ -0,0 +1,25 @@
> +################################################################################
> +#
> +# riscv64-elf-toolchain
> +#
> +################################################################################
> +
> +RISCV64_ELF_TOOLCHAIN_VERSION = 2020.12.8
> +RISCV64_ELF_TOOLCHAIN_SITE = https://static.dev.sifive.com/dev-tools/freedom-tools/v2020.12

Could we not get an official GCC build instead of SiFives custom toolchain?

Alistair

> +RISCV64_ELF_TOOLCHAIN_SOURCE = riscv64-unknown-elf-toolchain-10.2.0-$(RISCV64_ELF_TOOLCHAIN_VERSION)-x86_64-linux-centos6.tar.gz
> +
> +HOST_RISCV64_ELF_TOOLCHAIN_INSTALL_DIR = $(HOST_DIR)/opt/riscv64-elf
> +
> +define HOST_RISCV64_ELF_TOOLCHAIN_INSTALL_CMDS
> +       rm -rf $(HOST_RISCV64_ELF_TOOLCHAIN_INSTALL_DIR)
> +       mkdir -p $(HOST_RISCV64_ELF_TOOLCHAIN_INSTALL_DIR)
> +       cp -rf $(@D)/* $(HOST_RISCV64_ELF_TOOLCHAIN_INSTALL_DIR)/
> +
> +       mkdir -p $(HOST_DIR)/bin
> +       cd $(HOST_DIR)/bin && \
> +       for i in ../opt/riscv64-elf/bin/*; do \
> +               ln -sf $$i; \
> +       done
> +endef
> +
> +$(eval $(host-generic-package))
> --
> 2.30.2
>
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