Re: [OE-core] [PATCH 2/7] meson: pass -target and -I to bindgen calls

[Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>]

On 12/04/2025 01:53, Khem Raj wrote:
> On Fri, Apr 11, 2025 at 3:09 PM Dmitry Baryshkov via
> lists.openembedded.org
> <dmitry.baryshkov=oss.qualcomm.com@lists.openembedded.org> wrote:
>>
>> In order to properly generate Rust bindings for the target systems, we
>> need to pass '-taget foo-linux-gnueabi' flags and a correct include
>> target include path (${STAGING_INCDIR}) to the bindgen. Add those
>> flags to the generated meson target file.
>>
>> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
>> ---
>>   meta/classes-recipe/meson.bbclass | 1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/meta/classes-recipe/meson.bbclass b/meta/classes-recipe/meson.bbclass
>> index cbfc45b94bbd076735847134a0976b6b30784d50..ef45a034a767e979a45553ba08e46dc90e34f33f 100644
>> --- a/meta/classes-recipe/meson.bbclass
>> +++ b/meta/classes-recipe/meson.bbclass
>> @@ -93,6 +93,7 @@ cpp_link_args = ${@meson_array('LDFLAGS', d)}
>>   [properties]
>>   needs_exe_wrapper = true
>>   sys_root = '${STAGING_DIR_HOST}'
>> +bindgen_clang_arguments = ['-target', '${@d.getVar('RUST_HOST_SYS')}', '-I${STAGING_INCDIR}']
> 
> I think its better to use ${HOST_CC_ARCH}${TOOLCHAIN_OPTIONS}
> --target=${TARGET_SYS}

Using ${TOOLCHAIN_OPTIONS} breaks x86-64 build with the compiler being 
unable to find headers. I'd rather stick to the patch I have posted.

> here
> 
>>
>>   [host_machine]
>>   system = '${@meson_operating_system('HOST_OS', d)}'
>>
>> --
>> 2.39.5
>>
>>
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-- 
With best wishes
Dmitry