From cb1db708e1c45f9f1516fafd6bdc8f7db71f60cb Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sat, 18 Apr 2026 19:47:01 +0200 Subject: [PATCH] build: do not set CCACHE_COMPILERCHECK Stop overriding CCACHE_COMPILERCHECK from rules.mk and rely on ccache's default, which hashes the compiler binary's mtime and size. For a local tree that is enough: the toolchain only changes when it is rebuilt, and a rebuild updates mtime and size. Users who want a stricter check can still set CCACHE_COMPILERCHECK in their environment. CI does not depend on this export either. The workflow writes a secondary ccache.conf with compiler_check=string: so the cache key is tied to the toolchain source revision. That is both stricter than the previous "%compiler% -v -c" setting and portable across runners, where compiler mtimes would not match after restoring a cache archive. Link: https://github.com/openwrt/openwrt/pull/22995 Signed-off-by: Hauke Mehrtens (cherry picked from commit 3956287514e5457723070f4b8bc7ed8084019d39) (cherry picked from commit a6149ff867c92daa1aaa050b27ba8c6053d7cfe0) --- rules.mk | 1 - 1 file changed, 1 deletion(-) diff --git a/rules.mk b/rules.mk index d332664b79..de175fa7ba 100644 --- a/rules.mk +++ b/rules.mk @@ -344,7 +344,6 @@ ifneq ($(CONFIG_CCACHE),) HOSTCXX:= ccache $(HOSTCXX) export CCACHE_BASEDIR:=$(TOPDIR) export CCACHE_DIR:=$(if $(call qstrip,$(CONFIG_CCACHE_DIR)),$(call qstrip,$(CONFIG_CCACHE_DIR)),$(TOPDIR)/.ccache) - export CCACHE_COMPILERCHECK:=%compiler% -v -c endif TARGET_CONFIGURE_OPTS = \