Re: [PATCH] perf tests: Fix lib path detection for non-x86 architectures

[Namhyung Kim <namhyung@kernel.org>]

On Sun, Jul 20, 2025 at 02:29:05PM +0530, Suchit Karunakaran wrote:
> The existing Makefile logic for determining library paths was
> hardcoded for x86 architectures, causing incorrect behavior
> on other platforms. This patch implements a portable solution
> using system bit detection.
> 
> Signed-off-by: Suchit Karunakaran <suchitkarunakaran@gmail.com>
> ---
>  tools/perf/tests/make | 9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/tools/perf/tests/make b/tools/perf/tests/make
> index 0ee94caf9ec1..565522408f99 100644
> --- a/tools/perf/tests/make
> +++ b/tools/perf/tests/make
> @@ -53,9 +53,12 @@ endif
>  
>  include $(srctree)/tools/scripts/Makefile.arch
>  
> -# FIXME looks like x86 is the only arch running tests ;-)
> -# we need some IS_(32/64) flag to make this generic
> -ifeq ($(ARCH)$(IS_64_BIT), x861)
> +BITS := $(shell getconf LONG_BIT)
> +IS_64_BIT ?= 1
> +ifeq ($(BITS), 32)
> +IS_64_BIT = 0
> +endif
> +ifeq ($(IS_64_BIT), 1)
>  lib = lib64
>  else
>  lib = lib

A dummy question: Does all other architectures have lib64 vs lib
separation?

Thanks,
Namhyung

> -- 
> 2.50.1
>