Re: [PATCH for-4.15] autoconf: check endian.h include path

[Jan Beulich <jbeulich@xxxxxxxx>]

On 04.02.2021 10:38, Roger Pau Monne wrote:
> --- a/tools/configure.ac
> +++ b/tools/configure.ac
> @@ -74,6 +74,7 @@ m4_include([../m4/ax_compare_version.m4])
>  m4_include([../m4/paths.m4])
>  m4_include([../m4/systemd.m4])
>  m4_include([../m4/golang.m4])
> +m4_include([../m4/header.m4])
>  
>  AX_XEN_EXPAND_CONFIG()
>  
> @@ -517,4 +518,6 @@ AC_ARG_ENABLE([pvshim],
>  ])
>  AC_SUBST(pvshim)
>  
> +AX_FIND_HEADER([INCLUDE_ENDIAN_H], [endian.h sys/endian.h])

Instead of a new macro, can't you use AC_CHECK_HEADERS()?

I'm also not certain about the order of checks - what if both
exist?

Jan