Compile polybar on trusty

20-siji.conf

<?xml version="1.0"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<!-- ~/.config/fontconfig/conf.d/20-siji.conf -->
<fontconfig>
    <!-- Restore Fixed bitmap font for terminal usage -->
    <selectfont>
        <acceptfont>
            <pattern>
                <patelt name="family">
                    <string>Siji</string>
                </patelt>
            </pattern>
        </acceptfont>
    </selectfont>
</fontconfig>

README

# Build with i3 debian packages from https://i3wm.org
# deb [arch=amd64] http://debian.sur5r.net/i3 trusty universe

# Use i3 sourced packages for build
sudo apt-get install libcairo2-dev libxcbcommon-dev libxcbcommon-x11-dev libxcb-xrm-dev

# Need backports for trusty
sudo apt install cmake3

sudo apt install libcurl4-gnutls-dev
sudo apt-get install libiw-dev
sudo apt-get install xcb-proto
sudo apt-get install libasound2-dev
sudo apt-get install libxcb-xkb-dev
sudo apt-get install libxcb-randr0-dev
sudo apt-get install libxcb-cursor-dev
sudo apt-get install libxcb-ewmh-dev libxcb-icccm4-dev
sudo apt-get install python-xcbgen
sudo apt-get install libmpdclient-dev

sudo apt-get install ttf-unifont
# for siji font go to https://github.com/stark/siji
# Use 20-siji.conf for enable font in fontconfig

# Options WITH_XRENDER WITH_XDAMAGE WITH_XSYNC WITH_XCOMPOSITE
sudo apt-get install libxcb-render0-dev libxcb-damage0-dev libxcb-damage0-dev libxcb-composite0-dev

# ppa:ubuntu-toolchain-r/test
sudo apt install g++-5

# Avoid user local installation of python or any software
export PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games

git clone --branch 3.1.0 --recursive https://github.com/jaagr/polybar
mkdir polybar/build && cd polybar/build
CC=/usr/bin/gcc-5 CXX=/usr/bin/g++-5 cmake \
 -DCMAKE_C_COMPILER="$CC" \
 -DCMAKE_CXX_COMPILER="$CXX" \
 -DENABLE_ALSA:BOOL=ON \
 -DENABLE_I3:BOOL=ON \
 -DENABLE_MPD:BOOL=ON \
 -DENABLE_NETWORK:BOOL=ON \
 -DENABLE_CURL:BOOL=ON \
 -DBUILD_IPC_MSG:BOOL=ON \
 -DWITH_XRENDER:BOOL=ON \
 -DWITH_XDAMAGE:BOOL=ON \
 -DWITH_XSYNC:BOOL=ON \
 -DWITH_XCOMPOSITE:BOOL=ON \
 ..
 
sudo make install # in /usr/local
make userconfig
polybar example