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Romain Naour 91786c875d package/rustc: needs C++ compiler with musl based toolchain While building host-rust with a musl based toolchain without C++ compiler, the build fail since libunwind bundled in rust sources needs a C++ compiler. cargo:warning=i686-buildroot-linux-musl-gcc.br_real: error: [...]/host-rust-1.62.0/src/llvm-project/libunwind/src/Unwind-EHABI.cpp: C++ compiler not installed on this system Note: the issues can't be reproduced with a glibc based toolchain without C++ probaly due to extra steps required to support musl libc. We could add the C++ dependency direclty to host-rustc but it would requires adding the C++ reverse dependencies to all rust packages. Instread, we add the C++ dependency to BR2_PACKAGE_HOST_RUSTC_TARGET_ARCH_SUPPORTS only when a musl toolchain is used. So we can still install a prebuilt rust compiler but without the rust standard library (rust-std). Usually we should not add toolchain dependencies in a _ARCH_SUPPORTS option but BR2_PACKAGE_HOST_RUSTC_TARGET_TIER... options contains already some BR2_TOOLCHAIN_USES_GLIBC or BR2_TOOLCHAIN_USES_MUSL. Fixes: http://autobuild.buildroot.org/results/636/636fb39c8f1b8c05e4ca451ac506cd63c7166d82 Signed-off-by: Romain Naour <romain.naour@smile.fr> Reviewed-by: Nicolas Tran <nicolas.tran@smile.fr> Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr> (cherry picked from commit `8520058ac0`) Signed-off-by: Peter Korsgaard <peter@korsgaard.com>	2022-09-18 08:48:42 +02:00
..
Config.in.host	package/rustc: needs C++ compiler with musl based toolchain	2022-09-18 08:48:42 +02:00
rustc.mk	…

Romain Naour 91786c875d package/rustc: needs C++ compiler with musl based toolchain

While building host-rust with a musl based toolchain without C++ compiler,
the build fail since libunwind bundled in rust sources needs a C++ compiler.

cargo:warning=i686-buildroot-linux-musl-gcc.br_real: error: [...]/host-rust-1.62.0/src/llvm-project/libunwind/src/Unwind-EHABI.cpp: C++ compiler not installed on this system

Note: the issues can't be reproduced with a glibc based toolchain
without C++ probaly due to extra steps required to support musl libc.

We could add the C++ dependency direclty to host-rustc but it would
requires adding the C++ reverse dependencies to all rust packages.

Instread, we add the C++ dependency to BR2_PACKAGE_HOST_RUSTC_TARGET_ARCH_SUPPORTS
only when a musl toolchain is used. So we can still install a prebuilt
rust compiler but without the rust standard library (rust-std).

Usually we should not add toolchain dependencies in a _ARCH_SUPPORTS option but
BR2_PACKAGE_HOST_RUSTC_TARGET_TIER... options contains already some
BR2_TOOLCHAIN_USES_GLIBC or BR2_TOOLCHAIN_USES_MUSL.

Fixes:
http://autobuild.buildroot.org/results/636/636fb39c8f1b8c05e4ca451ac506cd63c7166d82

Signed-off-by: Romain Naour <romain.naour@smile.fr>
Reviewed-by: Nicolas Tran <nicolas.tran@smile.fr>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit 8520058ac0)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

2022-09-18 08:48:42 +02:00

Config.in.host package/rustc: needs C++ compiler with musl based toolchain 2022-09-18 08:48:42 +02:00

rustc.mk

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