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Makefile: Serialize git commands using flock

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We previously made directories depend on files for the synthetic
serialization of git commands. git does not track directories, and
time stamps across repos (starter-kit vs. bots) work rather poorly --
for example, this broke "bots" being a symlink to a previously existing
checkout.

Use file locking instead, which is a more direct way of ensuring that
there is only one git operation that affects the current checkout. We
don't need to flock bots/, as that's an independent git repository.

Closes #371
This commit is contained in:
Martin Pitt 2020-09-21 12:55:35 +02:00 • committed by Matej Marusak
parent 661ca771b3
commit 6bd2f3ed94
1 changed files with 9 additions and 11 deletions
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20
Makefile
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@ -153,21 +153,19 @@ bots:
# checkout Cockpit's test API; this has no API stability guarantee, so check out a stable tag
# when you start a new project, use the latest release, and update it from time to time
test/common:
git fetch --depth=1 https://github.com/cockpit-project/cockpit.git 228
git checkout --force FETCH_HEAD -- test/common
git reset test/common
flock Makefile sh -ec '\
git fetch --depth=1 https://github.com/cockpit-project/cockpit.git 228; \
git checkout --force FETCH_HEAD -- test/common; \
git reset test/common'
src/lib/patternfly/_fonts.scss:
git fetch --depth=1 https://github.com/cockpit-project/cockpit.git 227
mkdir -p pkg/lib/patternfly && git add pkg/lib/patternfly
git checkout --force FETCH_HEAD -- pkg/lib/patternfly
git reset -- pkg/lib/patternfly
flock Makefile sh -ec '\
git fetch --depth=1 https://github.com/cockpit-project/cockpit.git 227; \
mkdir -p pkg/lib/patternfly && git add pkg/lib/patternfly; \
git checkout --force FETCH_HEAD -- pkg/lib/patternfly; \
git reset -- pkg/lib/patternfly'
mkdir -p src/lib && mv pkg/lib/patternfly src/lib/patternfly && rmdir -p pkg/lib
# force serialization of the targets that call git, as they compete for the git lock
bots: test/common
test/common: src/lib/patternfly/_fonts.scss
$(NODE_MODULES_TEST): package.json
# if it exists already, npm install won't update it; force that so that we always get up-to-date packages
rm -f package-lock.json