The GitHub CI spends 10 to 18 minutes rebuilding all host tools in most
"Check Kernel patches" jobs, although the tools container ships them
prebuilt. Before, the "Build tools" step took about 10 seconds.
The refresh sets all stamps to one time given to touch -t, which has a
resolution of a full second, so the fraction is zero. The CI job runs the
refresh about 0.2 seconds after actions/checkout finished, and git writes
the tools directory last. Its files therefore often get a timestamp in
the same second as the stamps, but after the full second. Since
timestamp.pl compares the fraction of a second, these source files are
newer than the stamps and every tool gets cleaned and built again.
Take the time from a freshly created temporary file and set all stamps
to it with touch -r. They still share one timestamp, but it now includes
the fraction and is always later than the checkout.
Fixes: 3cf47c5c17 ("build: compare timestamps with a fraction of a second")
Assisted-by: Claude:claude-opus-5-5
Link: https://github.com/openwrt/openwrt/pull/25626
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
The GitHub CI was sometimes still building some tools again even when
the same version was already pre-built. This change fixes the problem
and should improve the speed of the GitHub CI actions. The duration of
the "Build tools" step will be reduced from 5 to 20 minutes down to
10 to 15 seconds.
make also checks that dependencies are not more recent than the target
it wants to build. Previously find returned files in an arbitrary order
and touch set the current timestamp. Since touch is called per file the
timestamps differ in fractional seconds, so not all files got the same
time. make detected a more recent dependency and started to rebuild.
Now all files are set to the same timestamp and make will assume
everything is up to date.
It is sufficient to only touch the stamp files to prevent rebuilding.
Link: https://github.com/openwrt/openwrt/pull/22888
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
It's possible to have prebuilt tools already extracted. Add option to
just refresh the timestamps.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Host tools path may be a symbolic link. Use -H with find to follow path
links passed from command line to find command.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Add a simple script to make it easier to install a prebuilt tools tar.
Currently it will be used by our tools container and kernel workflow on
github.
Simple script that take a tar that contains prebuilt host tools, extract
them and refresh the timestamps to skip recompilation of such host
tools.
By default it refresh timestamps of build_dir/host and
staging_dir/host/stamp.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Hauke Mehrtens
Christian Marangi