[igt-dev] [PATCH i-g-t] meson: Port cpuid.h test from configure.ac

[Petri Latvala]

On Mon, Feb 10, 2020 at 10:52:33AM +0800, Nicolas Boichat wrote:
> When cross-compiling for arm64, we noticed that the header file
> may be present, but it is not functional:
> /usr/lib64/clang/10.0.0/include/cpuid.h:11:2: error: this header is for x86 only
> 
> Signed-off-by: Nicolas Boichat <drinkcat at chromium.org>

Reviewed-by: Petri Latvala <petri.latvala at intel.com>

> ---
>  meson.build | 12 ++++++++++--
>  1 file changed, 10 insertions(+), 2 deletions(-)
> 
> diff --git a/meson.build b/meson.build
> index 4d5003ba..bcb69e1c 100644
> --- a/meson.build
> +++ b/meson.build
> @@ -207,8 +207,16 @@ endif
>  if cc.has_header('sys/io.h')
>  	config.set('HAVE_SYS_IO_H', 1)
>  endif
> -if cc.has_header('cpuid.h')
> -	# FIXME: Do we need the example link test from configure.ac?
> +if cc.links('''
> +#include <cpuid.h>
> +#include <stddef.h>
> +
> +int main(void) {
> +  int eax, ebx, ecx, edx;
> +  if (__get_cpuid_max(0, NULL) < 4)
> +    return 0;
> +  __cpuid_count(4, 0, eax, ebx, ecx, edx);
> +}''', name : 'cpuid.h')
>  	config.set('HAVE_CPUID_H', 1)
>  endif
>  if cc.has_header_symbol('unistd.h', 'gettid', args : '-D_GNU_SOURCE')
> -- 
> 2.25.0.341.g760bfbb309-goog
> 
> _______________________________________________
> igt-dev mailing list
> igt-dev at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/igt-dev