linux-kernel - [PATCH] perf build: don't hardcode pkg-config path

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Message-ID: <e0fc158239e73f22405c78d5b3219c266e3763be.1705506665.git.jan.kundrat@cesnet.cz>
Date: Wed, 17 Jan 2024 16:50:47 +0100
From: Jan Kundrát <jan.kundrat@...net.cz>
To: linux-perf-users@...r.kernel.org
Cc: Yann E. MORIN <yann.morin.1998@...e.fr>,
    linux-kernel@...r.kernel.org
Subject: [PATCH] perf build: don't hardcode pkg-config path

On Buildroot and when building for Arm using the Bootlin toolchain, the
actual `pkg-config` is named just `pkg-config`, not
`arm-linux-pkg-config`. This patch allows the external build system
(such as Buildroot) to pass a working path.

This is already done correctly in tools/build/feature/Makefile and
tools/thermal/tmon/Makefile and also fixed in other places many years
ago (9961aa665b70e47d6c80141c4a2482266010f246), but for some reason it
was never fixed in this file.

Signed-off-by: Jan Kundrát <jan.kundrat@...net.cz>
To: linux-perf-users@...r.kernel.org
Cc: Yann E. MORIN <yann.morin.1998@...e.fr>
Cc: linux-kernel@...r.kernel.org
---
 tools/perf/Makefile.perf | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 86569f230e60..b69ab2ae77c6 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -188,7 +188,7 @@ HOSTLD  ?= ld
 HOSTAR  ?= ar
 CLANG   ?= clang

-PKG_CONFIG = $(CROSS_COMPILE)pkg-config
+PKG_CONFIG ?= $(CROSS_COMPILE)pkg-config

 RM      = rm -f
 LN      = ln -f
-- 
2.43.0