1. Install build dependencies

Ubuntu & Debian & Linux Mint

sudo apt install git build-essential automake autoconf libtool pkg-config intltool autoconf-archive libpcre3-dev libglib2.0-dev libgtk-3-dev libxml2-utils

Fedora

sudo dnf install automake autoconf intltool libtool autoconf-archive pkgconfig glib2-devel gtk3-devel

openSUSE

sudo zypper install automake autoconf intltool libtool autoconf-archive pkgconfig glib2-devel gtk3-devel

2. Get the source

git clone https://github.com/cboxdoerfer/fsearch.git
cd fsearch

3. Build (and install)

./autogen.sh
./configure
make && sudo make install

=================

Download

Arch Linux (AUR)

https://aur.archlinux.org/packages/fsearch-git/

openSUSE (unoffical)

https://software.opensuse.org/download.html?project=home%3AAsterPhoenix13&package=fsearch

Ubuntu

Daily Development Builds PPA

https://launchpad.net/~christian-boxdoerfer/+archive/ubuntu/fsearch-daily

PPA Installation

sudo add-apt-repository ppa:christian-boxdoerfer/fsearch-daily
sudo apt-get update
sudo apt install fsearch-trunk