From 831a22fa5a60b09229d90361d2215b190fbc575c Mon Sep 17 00:00:00 2001
From: Ross Burton <ross.burton@arm.com>
Date: Thu, 24 Jul 2025 17:20:54 +0100
Subject: [PATCH] ccache: drop CCACHE_COMPILERCHECK

This variable controls how ccache determines if the cache is valid or not
for a given compiler.

By default, ccache looks at the mtime of the compiler binary. This should
be sufficient for our purposes as the mtime is preserved from sstate
and will only be changed on rebuilds if the binary is actually different.

(From OE-Core rev: 27aec0bab6fcb19c5d5be30763f4038a46922e8f)

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---
 meta/classes/ccache.bbclass | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/meta/classes/ccache.bbclass b/meta/classes/ccache.bbclass
index 7c42e66bdf..7daaa7e3aa 100644
--- a/meta/classes/ccache.bbclass
+++ b/meta/classes/ccache.bbclass
@@ -37,9 +37,6 @@ CCACHE_NATIVE_RECIPES_ALLOWED ?= ""
 # in different builds.
 export CCACHE_BASEDIR ?= "${TMPDIR}"
 
-# Used for sharing cache files after compiler is rebuilt
-export CCACHE_COMPILERCHECK ?= "%compiler% -dumpspecs"
-
 export CCACHE_CONFIGPATH ?= "${COREBASE}/meta/conf/ccache.conf"
 
 export CCACHE_DIR ?= "${CCACHE_TOP_DIR}/${MULTIMACH_TARGET_SYS}/${PN}"