On Wed, Jul 01, 2020 at 05:34:16PM +0000, John Frankish wrote:
> I'm trying to compile firefox natively on an RPi4 running tinycorelinux
> piCore.
>
> The configure phase fails because it tries to use arm-unknown-linux-gnueabihf
> as the rust target instead of armv7-unknown-linux-gnueabihf.
>
> If I try the rust test manually, i.e.:
>
> /usr/local/bin/rustc --crate-type staticlib
> --target=armv7-unknown-linux-gnueabihf -o /tmp/conftest.rlib /tmp/conftest.rs
>
> ..it passes.
>
> Is there a way to force the rust target?
Not directly. But if configure is trying to use arm rather than armv7,
that suggests your C/C++ compiler is targetting something older than armv7 by
default. Can you try `--with-arch=armv7-a`?
>
> ----
>
> ./mach build
> ...
> 0:07.54 checking for host system type... armv7l-unknown-linux-gnueabihf
> 0:07.54 checking for target system type... armv7l-unknown-linux-gnueabihf
> ...
> 0:16.71 checking for rust target triplet...
> 0:16.71 DEBUG: Creating `/tmp/conftestg7rtgcch.rs` with content:
> 0:16.71 DEBUG: | pub extern fn hello() { println!("Hello world"); }
> 0:16.71 DEBUG: Executing: `/usr/local/bin/rustc --crate-type staticlib
> --target=arm-unknown-linux-gnueabihf -o /tmp/conftestmw0yudfu.rlib
> /tmp/conftestg7rtgcch.rs`
> 0:16.72 DEBUG: The command returned non-zero exit status 1.
> 0:16.72 DEBUG: Its error output was:
> 0:16.72 DEBUG: | error[E0463]: can't find crate for `std`
> 0:16.72 DEBUG: | |
> 0:16.72 DEBUG: | = note: the `arm-unknown-linux-gnueabihf` target may not
> be installed
> 0:16.72 DEBUG: |
> 0:16.73 DEBUG: | error: aborting due to previous error
> 0:16.73 DEBUG: |
> 0:16.73 DEBUG: | For more information about this error, try `rustc --explain
> E0463`.
> 0:16.73 ERROR: Cannot compile for armv7l-unknown-linux-gnueabihf with
> /usr/local/bin/rustc
> 0:16.73 The target may be unsupported, or you may not have
> 0:16.73 a rust std library for that target installed. Try:
> 0:16.73 rustup target add arm-unknown-linux-gnueabihf
> 0:16.89 *** Fix above errors and then restart with\
> 0:16.89 "./mach build"
> 0:16.89 make: *** [client.mk:115: configure] Error 1
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