[LTP] [PATCH] endian_switch01: Add HAVE_GETAUXVAL guarder

[Jan Stancek]

On Fri, May 5, 2023 at 6:28 PM Petr Vorel <pvorel@suse.cz> wrote:
>
> From: Petr Vorel <petr.vorel@gmail.com>
>
> This fixes compilation on uClibc / uClibc-ng (and also older glibc),
> which does not provide this header.
>
> Fixes: 03b76a20c ("endian_switch01.c: drop unused main4()")
> Signed-off-by: Petr Vorel <petr.vorel@gmail.com>
> ---
> Hi Jan,
>
> can you please have a look, I'd prefer to merge this before release
> (build fix on Buildroot).

Looks reasonable (on my phone), ack.

>
> Kind regards,
> Petr
>
>  testcases/kernel/syscalls/switch/endian_switch01.c | 14 +++++++++++---
>  1 file changed, 11 insertions(+), 3 deletions(-)
>
> diff --git a/testcases/kernel/syscalls/switch/endian_switch01.c b/testcases/kernel/syscalls/switch/endian_switch01.c
> index d965aed56..fac9e2382 100644
> --- a/testcases/kernel/syscalls/switch/endian_switch01.c
> +++ b/testcases/kernel/syscalls/switch/endian_switch01.c
> @@ -2,7 +2,7 @@
>  /*
>   * Copyright (c) International Business Machines Corp., 2008
>   * Copyright (c) Paul Mackerras, IBM Corp., 2008
> - * Copyright (c) 2018 Linux Test Project
> + * Copyright (c) 2018-2023 Linux Test Project
>   */
>
>  /*
> @@ -15,16 +15,20 @@
>  #include <stdlib.h>
>  #include <unistd.h>
>  #include <elf.h>
> -#include <sys/auxv.h>
>  #include <sys/types.h>
>  #include <sys/wait.h>
> +
>  #include "tst_test.h"
>
>  #if defined(__powerpc64__) || defined(__powerpc__)
> +
>  # ifndef PPC_FEATURE_TRUE_LE
> -# define PPC_FEATURE_TRUE_LE              0x00000002
> +#  define PPC_FEATURE_TRUE_LE              0x00000002
>  # endif
>
> +# ifdef HAVE_GETAUXVAL
> +#  include <sys/auxv.h>
> +
>  /*
>   * Make minimal call to 0x1ebe. If we get ENOSYS then syscall is not
>   * available, likely because of:
> @@ -98,6 +102,10 @@ static struct tst_test test = {
>         .forks_child = 1,
>  };
>
> +# else
> +TST_TEST_TCONF("Toolchain does not have <sys/auxv.h>");
> +# endif /* HAVE_GETAUXVAL */
> +
>  #else /* defined (__powerpc64__) || (__powerpc__) */
>  TST_TEST_TCONF("This system does not support running of switch() syscall");
>  #endif
> --
> 2.40.1
>