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# Library of functions shared by all CI scripts
skip_branch_tip_with_tag () {
# Sometimes, a branch is pushed at the same time the tag that points
# at the same commit as the tip of the branch is pushed, and building
# both at the same time is a waste.
#
# Travis gives a tagname e.g. v2.14.0 in $TRAVIS_BRANCH when
# the build is triggered by a push to a tag. Let's see if
# $TRAVIS_BRANCH is exactly at a tag, and if so, if it is
# different from $TRAVIS_BRANCH. That way, we can tell if
# we are building the tip of a branch that is tagged and
# we can skip the build because we won't be skipping a build
# of a tag.
if TAG=$(git describe --exact-match "$TRAVIS_BRANCH" 2>/dev/null) &&
test "$TAG" != "$TRAVIS_BRANCH"
then
echo "$(tput setaf 2)Tip of $TRAVIS_BRANCH is exactly at $TAG$(tput sgr0)"
exit 0
fi
}
# Save some info about the current commit's tree, so we can skip the build
# job if we encounter the same tree again and can provide a useful info
# message.
save_good_tree () {
echo "$(git rev-parse $TRAVIS_COMMIT^{tree}) $TRAVIS_COMMIT $TRAVIS_JOB_NUMBER $TRAVIS_JOB_ID" >>"$good_trees_file"
# limit the file size
tail -1000 "$good_trees_file" >"$good_trees_file".tmp
mv "$good_trees_file".tmp "$good_trees_file"
}
# Skip the build job if the same tree has already been built and tested
# successfully before (e.g. because the branch got rebased, changing only
# the commit messages).
skip_good_tree () {
if ! good_tree_info="$(grep "^$(git rev-parse $TRAVIS_COMMIT^{tree}) " "$good_trees_file")"
then
# Haven't seen this tree yet, or no cached good trees file yet.
# Continue the build job.
return
fi
echo "$good_tree_info" | {
read tree prev_good_commit prev_good_job_number prev_good_job_id
if test "$TRAVIS_JOB_ID" = "$prev_good_job_id"
then
cat <<-EOF
$(tput setaf 2)Skipping build job for commit $TRAVIS_COMMIT.$(tput sgr0)
This commit has already been built and tested successfully by this build job.
To force a re-build delete the branch's cache and then hit 'Restart job'.
EOF
else
cat <<-EOF
$(tput setaf 2)Skipping build job for commit $TRAVIS_COMMIT.$(tput sgr0)
This commit's tree has already been built and tested successfully in build job $prev_good_job_number for commit $prev_good_commit.
The log of that build job is available at https://travis-ci.org/$TRAVIS_REPO_SLUG/jobs/$prev_good_job_id
To force a re-build delete the branch's cache and then hit 'Restart job'.
EOF
fi
}
exit 0
}
check_unignored_build_artifacts ()
{
! git ls-files --other --exclude-standard --error-unmatch \
-- ':/*' 2>/dev/null ||
{
echo "$(tput setaf 1)error: found unignored build artifacts$(tput sgr0)"
false
}
}
# Set 'exit on error' for all CI scripts to let the caller know that
# something went wrong.
# Set tracing executed commands, primarily setting environment variables
# and installing dependencies.
set -ex
cache_dir="$HOME/travis-cache"
good_trees_file="$cache_dir/good-trees"
mkdir -p "$cache_dir"
skip_branch_tip_with_tag
skip_good_tree
if test -z "$jobname"
then
jobname="$TRAVIS_OS_NAME-$CC"
fi
export DEVELOPER=1
export DEFAULT_TEST_TARGET=prove
export GIT_PROVE_OPTS="--timer --jobs 3 --state=failed,slow,save"
export GIT_TEST_OPTS="--verbose-log -x --immediate"
export GIT_TEST_CLONE_2GB=YesPlease
if [ "$jobname" = linux-gcc ]; then
export CC=gcc-8
fi
case "$jobname" in
linux-clang|linux-gcc)
export GIT_TEST_HTTPD=YesPlease
# The Linux build installs the defined dependency versions below.
# The OS X build installs the latest available versions. Keep that
# in mind when you encounter a broken OS X build!
export LINUX_P4_VERSION="16.2"
export LINUX_GIT_LFS_VERSION="1.5.2"
P4_PATH="$HOME/custom/p4"
GIT_LFS_PATH="$HOME/custom/git-lfs"
export PATH="$GIT_LFS_PATH:$P4_PATH:$PATH"
;;
osx-clang|osx-gcc)
# t9810 occasionally fails on Travis CI OS X
# t9816 occasionally fails with "TAP out of sequence errors" on
# Travis CI OS X
export GIT_SKIP_TESTS="t9810 t9816"
;;
GIT_TEST_GETTEXT_POISON)
export GIT_TEST_GETTEXT_POISON=YesPlease
;;
esac
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