Bug#781083: compiles fail with arm_neon.h

[Wookey <wookey@wookware.org>]

+++ Riku Voipio [2015-03-24 11:20 +0200]:
> Package: gcc-4.9-aarch64-linux-gnu
> Version: 4.9.2-10
> Severity: normal
> 
> The command: aarch64-linux-gnu-gcc -static -o test arm_neon_sample.c
> 
> Works native aarch64-linux-gnu-gcc in sid, as well with cross-gcc
> provided by linaro (9-2014.09). Cross-compiler in this package
> fails:
> 
> aarch64-linux-gnu-gcc -o test arm_neon_sample.c In file included
> from arm_neon_sample.c:2:0:
> /usr/lib/gcc/aarch64-linux-gnu/4.9/include/arm_neon.h: In function
> 'vqadd_u8':
> /usr/lib/gcc/aarch64-linux-gnu/4.9/include/arm_neon.h:2116:3: error:
> incompatible types when returning type 'int' but 'uint8x8_t' was
> expected
>   return __builtin_aarch64_uqaddv8qi_uuu (__a, __b);
>   ^
> /usr/lib/gcc/aarch64-linux-gnu/4.9/include/arm_neon.h: In function
> 'vqadd_u16':
> /usr/lib/gcc/aarch64-linux-gnu/4.9/include/arm_neon.h:2122:3: error:
> incompatible types when returning type 'int' but 'uint16x4_t' was
> expected
>   return __builtin_aarch64_uqaddv4hi_uuu (__a, __b);
>   ^
> ...

Yep, confirmed.

> Actual arm_neon.h comes from libgcc-4.9-dev:arm64 so I think this is
> something that got misconfigured while compiling the cross-compiker

Something is clearly up. Might take a little while to work out exactly
what.

Cheers for the report.

Wookey
-- 
Principal hats:  Linaro, Debian, Wookware, ARM
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