Bash: Upgrade WeeChat

build.sh

#!/bin/bash -eu
#
# build.sh
#
# Builds the development version WeeChat with CMake
# Place this script in the build directory of WeeChat
# @author Niko Heikkilä <yo@nikoheikkila.com>

# Paths
ROOTDIR=$HOME/weechat
TARGET=$HOME/.weechat

# Settings for Git
BRANCH="master"
REMOTE="origin"

# Amount of concurrent jobs
JOBS=2

if [[ ! -d "$ROOTDIR"/.git ]]; then
    echo "-- ERROR: Not a git repository."
    exit 1
else
    cd "$ROOTDIR"
    git fetch "$REMOTE"
    UPDATES=$(git log HEAD.."$REMOTE"/"$BRANCH" --oneline)
fi

if [[ "$UPDATES" != "" ]]; then
    echo "-- Updates found. Merging."
    git merge "$REMOTE"/"$BRANCH"
    echo "-- Building WeeChat from source files."

    if [[ ! -d "$ROOTDIR"/build ]]; then
        mkdir -p "$ROOTDIR"/build
    fi
    cd "$ROOTDIR"/build

    cmake "$ROOTDIR" -DCMAKE_INSTALL_PREFIX="$TARGET"
    make --jobs="$JOBS"
    echo "-- Installing WeeChat to ${TARGET}"
    make install
    echo "-- Installation complete."
else
    echo "-- No new updates. Goodbye!"
fi

exit 0