Re: [OE-core] [PATCH v2] rust: Use libc++ runtime when using clang with llvm runtime

[Richard Purdie <richard.purdie@linuxfoundation.org>]

On Thu, 2022-09-01 at 13:32 -0700, Khem Raj wrote:
> meta-clang has options when it comes to C++ runtime, default is to use
> gnu runtime, other options are llvm runtime and android runtime. This
> patch helps when a distro is using llvm runtime for C/C++ runtime. It
> informs the rust build system about right C++ runtime to configure for
> when such a setting is used.
> 
> Signed-off-by: Khem Raj <raj.khem@gmail.com>
> ---
> v2: Rebase now that 1.63 is in
> 
>  meta/recipes-devtools/rust/rust.inc | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/meta/recipes-devtools/rust/rust.inc b/meta/recipes-devtools/rust/rust.inc
> index 284347dedc..3a7b993ee8 100644
> --- a/meta/recipes-devtools/rust/rust.inc
> +++ b/meta/recipes-devtools/rust/rust.inc
> @@ -107,6 +107,8 @@ python do_configure() {
>      # [llvm]
>      config.add_section("llvm")
>      config.set("llvm", "static-libstdcpp", e(False))
> +    if "llvm" in (d.getVar('RUNTIME', True) or ""):
> +        config.set("llvm", "use-libcxx", e(True))
>  
>      # [rust]
>      config.add_section("rust")

My concerns about "RUNTIME" as a variable in OE-Core stand. We need to
figure out the naming properly for this before it is used here.

Cheers,

Richard