Provides a release script (google#142)

Fixes google#141

scripts/make_release.sh

@@ -0,0 +1,72 @@
+#!/usr/bin/env bash
+
+set -e # Fail on error
+set -u # Treat unset variables as an error and exit immediately
+
+ACTION='\033[1;90m'
+FINISHED='\033[1;96m'
+NOCOLOR='\033[0m'
+ERROR='\033[0;31m'
+
+echo -e "${ACTION}Checking environnement${NOCOLOR}"
+if [[ ! $1 =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]
+then
+    echo -e "${ERROR}Invalid version number. Aborting. ${NOCOLOR}"
+    exit 1
+fi
+
+declare -r VERSION=$1
+declare -r GIT_TAG="v$1"
+
+BRANCH=$(git rev-parse --abbrev-ref HEAD)
+if [[ "${BRANCH}" != "master" ]]
+then
+    echo -e "${ERROR}Not on master. Aborting. ${NOCOLOR}"
+    echo
+    exit 1
+fi
+
+git fetch
+HEADHASH=$(git rev-parse HEAD)
+UPSTREAMHASH=$(git rev-parse master@{upstream})
+
+if [[ "${HEADHASH}" != "${UPSTREAMHASH}" ]]
+then
+    echo -e "${ERROR}Not up to date with origin. Aborting.${NOCOLOR}"
+    echo
+    exit 1
+fi
+
+git update-index -q --refresh
+if ! git diff-index --quiet HEAD --
+then
+    echo -e "${ERROR}Branch has uncommited changes. Aborting.${NOCOLOR}"
+    exit 1
+fi
+
+if [ ! -z "$(git ls-files --exclude-standard --others)" ]
+then
+    echo -e "${ERROR}Branch has untracked files. Aborting.${NOCOLOR}"
+    exit 1
+fi
+
+declare -r LATEST_GIT_TAG=$(git describe --tags)
+declare -r LATEST_VERSION=${LATEST_GIT_TAG#"v"}
+
+if ! dpkg --compare-versions "${VERSION}" "gt" "${LATEST_VERSION}"
+then
+    echo -e "${ERROR}Invalid version ${VERSION} <= ${LATEST_VERSION} (latest). Aborting.${NOCOLOR}"
+    exit 1
+fi
+
+echo -e "${ACTION}Modifying CMakeLists.txt${NOCOLOR}"
+sed -i "s/CpuFeatures VERSION ${LATEST_VERSION}/CpuFeatures VERSION ${VERSION}/g" CMakeLists.txt
+
+echo -e "${ACTION}Commit new revision${NOCOLOR}"
+git add CMakeLists.txt
+git commit -m"Release ${GIT_TAG}"
+
+echo -e "${ACTION}Create new tag${NOCOLOR}"
+git tag ${GIT_TAG}
+
+echo -e "${FINISHED}Local release is ready. Run `git push origin --tags`${NOCOLOR}"