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authorGeorge Burgess IV <gbiv@google.com>2022-01-24 00:08:35 -0800
committerCommit Bot <commit-bot@chromium.org>2022-01-31 19:03:03 +0000
commit3dc6ca12ad631a8826fed1558d877982ce3a0bb3 (patch)
treee20d48ae4fb843eb766beb6f2a6b5b448eda64e6 /compiler_wrapper/ccache_flag.go
parent6c2fb76f73585aca8ef4e1e78f4396d9d4ddf103 (diff)
downloadtoolchain-utils-3dc6ca12ad631a8826fed1558d877982ce3a0bb3.tar.gz
compiler_wrapper: disable ccache during src_configure
This seems to speed things up in cmake by 10% or so, which is consistent with expectations (using `ccache` adds 15-30ms in experimental testing; cmake checks are often faster than that). BUG=b:215747936 TEST=CQ Change-Id: I1a12e50277b37af7bb0b6a58fea2de10006983c8 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/toolchain-utils/+/3411542 Reviewed-by: Manoj Gupta <manojgupta@chromium.org> Commit-Queue: George Burgess <gbiv@chromium.org> Tested-by: George Burgess <gbiv@chromium.org>
Diffstat (limited to 'compiler_wrapper/ccache_flag.go')
-rw-r--r--compiler_wrapper/ccache_flag.go7
1 files changed, 7 insertions, 0 deletions
diff --git a/compiler_wrapper/ccache_flag.go b/compiler_wrapper/ccache_flag.go
index 265b8fc2..02fb43ac 100644
--- a/compiler_wrapper/ccache_flag.go
+++ b/compiler_wrapper/ccache_flag.go
@@ -19,6 +19,13 @@ func processCCacheFlag(builder *commandBuilder) {
return arg.value
})
+ // Disable ccache during portage's src_configure phase. Using ccache here is generally a
+ // waste of time, since these files are very small. Experimentally, this speeds up
+ // configuring by ~13%.
+ if val, present := builder.env.getenv("EBUILD_PHASE"); present && val == "configure" {
+ useCCache = false
+ }
+
if builder.cfg.useCCache && useCCache {
// Note: we used to also set CCACHE_BASEDIR but don't do it
// anymore for reasons outlined in crrev.com/c/2103170.