> -----邮件原件-----
> 发件人: Thomas Monjalon <thomas@monjalon.net>
> 发送时间: 2018年11月8日 0:00
> 收件人: dev@dpdk.org
> 抄送: christian.ehrhardt@canonical.com; adrien.mazarguil@6wind.com;
> shahafs@mellanox.com; yskoh@mellanox.com;
> gowrishankar.m@linux.vnet.ibm.com; chaozhu@linux.vnet.ibm.com;
> pradeep@us.ibm.com; tyos@jp.ibm.com; dwilder@us.ibm.com
> 主题: [PATCH] net/mlx5: fix build on PPC64
>
> The AltiVec header file breaks boolean type:
>
> error: incompatible types when initializing type '__vector _bool int' {aka
> '_vector(4) __bool int'} using type 'int'
>
> If __APPLE_ALTIVEC__ is defined, then bool type is redefined and conflicts
> with stdbool.h.
>
> There is no good solution to fix it for the whole project without breaking
> something else, so a workaround is inserted in mlx5 PMD.
> This workaround is not compatible with C++ but there is no C++ in DPDK.
>
> Suggested-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
> Suggested-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
> Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
> ---
>  drivers/net/mlx5/mlx5_utils.h | 10 ++++++++++
>  1 file changed, 10 insertions(+)
>
> diff --git a/drivers/net/mlx5/mlx5_utils.h b/drivers/net/mlx5/mlx5_utils.h
> index 886f60e61..97092c749 100644
> --- a/drivers/net/mlx5/mlx5_utils.h
> +++ b/drivers/net/mlx5/mlx5_utils.h
> @@ -15,6 +15,16 @@
>
>  #include "mlx5_defs.h"
>
> +/*
> + * Compilation workaround for PPC64 when AltiVec is fully enabled, e.g.
> std=c11.
> + * Otherwise there would be a type conflict between stdbool and altivec.
> + */
> +#if defined(__PPC64__) && !defined(__APPLE_ALTIVEC__) #undef bool
> +/* redefine as in stdbool.h */
> +#define bool _Bool
> +#endif
> +
>  /* Bit-field manipulation. */
>  #define BITFIELD_DECLARE(bf, type, size) \
>  	type bf[(((size_t)(size) / (sizeof(type) * CHAR_BIT)) + \
> --
> 2.19.0
Verified, it works. Thanks!

Acked-by: Chao Zhu <chaozhu@linux.vnet.ibm.com>