e33d4678e6
This is caused by bash thinking that an empty array is the same as an
undefined variable and `set -o nounset` treating that as an error.
Fix that by using an empty string as the default for the expansion.
Fixes PR #1069 (6e25f60288).
Tested:
- Before this patch:
$ mv .git .gitbackup
$ hack/build-go.sh
/home/filbranden/devel/kubernetes/hack/config-go.sh: line 55: ldflags[*]: unbound variable
- After this patch:
$ mv .git .gitbackup
$ rm -rf output/
$ hack/build-go.sh
$ output/go/bin/kubelet -version
Kubernetes version 0.1+, build (unknown)
Signed-off-by: Filipe Brandenburger <filbranden@google.com>
122 lines
4.0 KiB
Bash
122 lines
4.0 KiB
Bash
#!/bin/bash
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# Copyright 2014 Google Inc. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# This script sets up a go workspace locally and builds all go components.
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# You can 'source' this file if you want to set up GOPATH in your local shell.
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# --- Helper Functions ---
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# Function kube::version_ldflags() prints the value that needs to be passed to
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# the -ldflags parameter of go build in order to set the Kubernetes based on the
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# git tree status.
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kube::version_ldflags() {
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(
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# Run this in a subshell to prevent settings/variables from leaking.
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set -o errexit
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set -o nounset
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set -o pipefail
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unset CDPATH
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cd "${KUBE_REPO_ROOT}"
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declare -a ldflags=()
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if git_commit=$(git rev-parse "HEAD^{commit}" 2>/dev/null); then
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ldflags+=(-X "${KUBE_GO_PACKAGE}/pkg/version.gitCommit" "${git_commit}")
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# Check if the tree is dirty.
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if git_status=$(git status --porcelain) && [[ -z "${git_status}" ]]; then
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git_tree_state="clean"
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else
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git_tree_state="dirty"
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fi
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ldflags+=(-X "${KUBE_GO_PACKAGE}/pkg/version.gitTreeState" "${git_tree_state}")
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# Use git describe to find the version based on annotated tags.
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if git_version=$(git describe --abbrev=14 "${git_commit}^{commit}" 2>/dev/null); then
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ldflags+=(-X "${KUBE_GO_PACKAGE}/pkg/version.gitVersion" "${git_version}")
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fi
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fi
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# The -ldflags parameter takes a single string, so join the output.
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echo "${ldflags[*]-}"
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)
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}
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# kube::setup_go_environment will check that `go` and `godep` commands are
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# available in ${PATH}. If not running on Travis, it will also check that the Go
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# version is good enough for the Kubernetes build.
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#
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# Also set ${GOPATH} and environment variables needed by Go.
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kube::setup_go_environment() {
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if [[ -z "$(which go)" ]]; then
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echo "Can't find 'go' in PATH, please fix and retry." >&2
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echo "See http://golang.org/doc/install for installation instructions." >&2
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exit 1
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fi
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if [[ -z "$(which godep)" ]]; then
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echo "Can't find 'godep' in PATH, please fix and retry." >&2
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echo "See https://github.com/GoogleCloudPlatform/kubernetes#godep-and-dependency-management" >&2
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exit 1
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fi
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# Travis continuous build uses a head go release that doesn't report
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# a version number, so we skip this check on Travis. Its unnecessary
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# there anyway.
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if [[ "${TRAVIS:-}" != "true" ]]; then
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local go_version
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go_version=($(go version))
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if [[ "${go_version[2]}" < "go1.2" ]]; then
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echo "Detected go version: ${go_version[*]}." >&2
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echo "Kubernetes requires go version 1.2 or greater." >&2
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echo "Please install Go version 1.2 or later" >&2
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exit 1
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fi
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fi
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# TODO: get rid of this after PR #1054 gets rid of godep.
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GOPATH="${KUBE_TARGET}:$(godep path)"
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export GOPATH
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# Unset GOBIN in case it already exsits in the current session.
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unset GOBIN
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}
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KUBE_REPO_ROOT=$(dirname "${BASH_SOURCE:-$0}")/..
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if [[ "${OSTYPE:-}" == *darwin* ]]; then
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# Make the path absolute if it is not.
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if [[ "${KUBE_REPO_ROOT}" != /* ]]; then
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KUBE_REPO_ROOT=${PWD}/${KUBE_REPO_ROOT}
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fi
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else
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# Resolve symlinks.
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KUBE_REPO_ROOT=$(readlink -f "${KUBE_REPO_ROOT}")
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fi
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KUBE_TARGET="${KUBE_REPO_ROOT}/output/go"
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mkdir -p "${KUBE_TARGET}"
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KUBE_GO_PACKAGE=github.com/GoogleCloudPlatform/kubernetes
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KUBE_GO_PACKAGE_DIR="${KUBE_TARGET}/src/${KUBE_GO_PACKAGE}"
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KUBE_GO_PACKAGE_BASEDIR=$(dirname "${KUBE_GO_PACKAGE_DIR}")
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mkdir -p "${KUBE_GO_PACKAGE_BASEDIR}"
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# Create symlink under output/go/src.
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ln -snf "${KUBE_REPO_ROOT}" "${KUBE_GO_PACKAGE_DIR}"
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