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Make Bazel not follow the infinite symlink in _output/local/go

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Otherwise, calling make followed by bazel might fail, requiring one to
run make clean first.

Additionally, add comments explaining why we must do this.
This commit is contained in:
Jeff Grafton 2018-11-28 13:50:01 -08:00
parent 22ff267324
commit e3fac7690b
1 changed files with 9 additions and 1 deletions
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10
hack/lib/golang.sh
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@ -354,7 +354,15 @@ kube::golang::create_gopath_tree() {
ln -snf "${KUBE_ROOT}" "${go_pkg_dir}"
fi
cat >"${KUBE_GOPATH}/BUILD" <<EOF
# Using bazel with a recursive target (e.g. bazel test ...) will abort due to
# the symlink loop created in this function, so create this special file which
# tells bazel not to follow the symlink.
touch "${go_pkg_basedir}/DONT_FOLLOW_SYMLINKS_WHEN_TRAVERSING_THIS_DIRECTORY_VIA_A_RECURSIVE_TARGET_PATTERN"
# Additionally, the //:package-srcs glob recursively includes all
# subdirectories, and similarly fails due to the symlink loop. By creating a
# BUILD.bazel file, we effectively create a dummy package, which stops the
# glob from descending further into the tree and hitting the loop.
cat >"${KUBE_GOPATH}/BUILD.bazel" <<EOF
# This dummy BUILD file prevents Bazel from trying to descend through the
# infinite loop created by the symlink at
# ${go_pkg_dir}