tce-load -i compiletc cmake qt-5.x-dev libgcrypt2-dev

git clone https://github.com/OtterBrowser/otter-browser
https://github.com/OtterBrowser/otter-browser/archive/v0.9.12.tar.gz

cd otter-browser-0.9.12

mkdir build
cd build

cmake -LAH -DCMAKE_C_FLAGS_RELEASE="-mtune=generic -Os -pipe" -DCMAKE_CXX_FLAGS_RELEASE="-mtune=generic -Os -pipe" -DCMAKE_INSTALL_PREFIX=/usr/local -DCMAKE_INSTALL_LOCALSTATEDIR=/var -DCMAKE_BUILD_TYPE=Release -DCMAKE_VERBOSE_MAKEFILE=TRUE ../

make
sudo make install

-- Could NOT find HUNSPELL (missing:  HUNSPELL_LIBRARIES HUNSPELL_INCLUDE_DIR) 
-- 
-- The following OPTIONAL packages have been found:

 * Qt5Quick (required version >= 5.7.0)
 * Qt5WebChannel (required version >= 5.7.0)
 * Qt5Positioning (required version >= 5.7.0)
 * Qt5WebEngineCore (required version >= 5.7.0) , QtWebEngine based backend (core) , <http://qt.io/>
 * Qt5WebEngineWidgets (required version >= 5.6.0) , QtWebEngine based backend (widgets) , <http://qt.io/>
 * Gcrypt (required version >= 1.6.0) , Data encryption support , <http://directory.fsf.org/project/libgcrypt/>

-- The following REQUIRED packages have been found:

 * Qt5Core
 * Qt5DBus
 * Qt5Gui
 * Qt5Multimedia
 * Qt5Network
 * Qt5PrintSupport
 * Qt5Qml
 * Qt5Widgets
 * Qt5XmlPatterns
 * Qt5 (required version >= 5.3.0)

-- The following OPTIONAL packages have not been found:

 * Qt5WebKitWidgets (required version >= 5.3.0) , QtWebKit based backend (widgets) , <http://qt.io/>
 * Hunspell (required version >= 1.3.0) , Generic spell checking support , <http://hunspell.github.io/>

-- The following web backends will be built:
 * QtWebEngine