xneur-git package build script for ArchLinux (needs review before publish in AUR)

PKGBUILD-xneur-git.sh

# Maintainer: Andrew Shark <ashark@linuxcomp.ru>

pkgname=xneur-git
pkgver=0.20.0.r155.75ebdcc
pkgrel=1
pkgdesc="Automatic Keyboard Layout Switcher like Punto Switcher"
arch=('x86_64')
url="https://xneur.ru/"
license=('GPL')
depends=()
makedepends=('git' 'gcc' 'make' 'cmake')
optdepends=()
provides=('xneur')
conflicts=('xneur')
source=( #'git+https://github.com/AndrewCrewKuznetsov/xneur-devel' # Choose only one of these sources
         #'git+https://github.com/Ashark/xneur-devel' # I use it when developing
        )
sha1sums=( #'SKIP'
        )

pkgver() {
  cd xneur-devel
  xnrelver=`cat xneur/CMakeLists.txt | grep "xneur VERSION" | cut -f3 -d ' ' | tr -d ")"`
  printf "$xnrelver.r%s.%s" "$(git rev-list --count HEAD)" "$(git rev-parse --short HEAD)"
}

# set amake or cmake here
build_system=amake

prepare() {
    mkdir -p ${srcdir}/xneur-devel/xneur/build
    cd ${srcdir}/xneur-devel/xneur # I use it when developing
    git checkout transition-to-cmake # I use it when developing
}

build() {
    if [[ $build_system == cmake ]]; then

		# clear cache. I use for debugging while developing
		if [ -d "${srcdir}/xneur-devel/xneur/build/" ]; then
			: # if statement should contain at least something (empty op).
			rm -r ${srcdir}/xneur-devel/xneur/build/* # Comment if do not want to clear cache
		fi
		
        cd ${srcdir}/xneur-devel/xneur/build
        cmake .. -DCMAKE_INSTALL_PREFIX=/usr
        make
    elif [[ $build_system == amake ]]; then
        cd ${srcdir}/xneur-devel/xneur
        ./autogen.sh --prefix=/usr --sysconfdir=/etc # autogen.sh creates configure file and runs it with parameters
        make
    fi
}

package() {
    if [[ $build_system == cmake ]]; then
        cd ${srcdir}/xneur-devel/xneur/build
		make DESTDIR=${pkgdir} install
    elif [[ $build_system == amake ]]; then
        cd ${srcdir}/xneur-devel/xneur
		make DESTDIR=${pkgdir} install
		make clean # removing am build-time stuff from sources
    fi
}