linux-kernel - Re: [PATCH] tools: build: use correct lib name for libtracefs feature detection

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Message-ID: <852a66f0-7dc4-4736-abd3-7be9efaa3435@kernel.org>
Date: Tue, 18 Jun 2024 10:26:46 +0200
From: Daniel Bristot de Oliveira <bristot@...nel.org>
To: Daniel Wagner <dwagner@...e.de>,
 Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Steven Rostedt <rostedt@...dmis.org>, linux-trace-kernel@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tools: build: use correct lib name for libtracefs feature
 detection

Adding Arnaldo

On 6/17/24 20:38, Daniel Wagner wrote:
> Use libtracefs as package name to lookup the CFLAGS for libtracefs. This
> makes it possible to use the distro specific path as include path for
> the header file.
> 
> Signed-off-by: Daniel Wagner <dwagner@...e.de>
> ---
> Our downstream packaging stop working. After a bit of didding I found out that
> the libtracefs feature detection is not completely right.
> 
> https://build.opensuse.org/build/benchmark/SLE_15_SP5/x86_64/rtla/_log
> ---
>  tools/build/feature/Makefile          | 2 +-
>  tools/build/feature/test-libtracefs.c | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile
> index ed54cef450f5..489cbed7e82a 100644
> --- a/tools/build/feature/Makefile
> +++ b/tools/build/feature/Makefile
> @@ -213,7 +213,7 @@ endif
>  	$(BUILD) -ltraceevent
>  
>  $(OUTPUT)test-libtracefs.bin:
> -	 $(BUILD) $(shell $(PKG_CONFIG) --cflags libtraceevent 2>/dev/null) -ltracefs
> +	 $(BUILD) $(shell $(PKG_CONFIG) --cflags libtracefs 2>/dev/null) -ltracefs
>  
>  $(OUTPUT)test-libcrypto.bin:
>  	$(BUILD) -lcrypto
> diff --git a/tools/build/feature/test-libtracefs.c b/tools/build/feature/test-libtracefs.c
> index 8eff16c0c10b..29a757a7d848 100644
> --- a/tools/build/feature/test-libtracefs.c
> +++ b/tools/build/feature/test-libtracefs.c
> @@ -1,5 +1,5 @@
>  // SPDX-License-Identifier: GPL-2.0
> -#include <tracefs/tracefs.h>
> +#include <tracefs.h>
>  
>  int main(void)
>  {
> 
> ---
> base-commit: 0bbac3facb5d6cc0171c45c9873a2dc96bea9680
> change-id: 20240617-rtla-build-83020baf9277
> 
> Best regards,