tce-load -i compiletc git meson gobject-introspection-dev vala-dev yaml-dev lmdb-dev libstemmer-dev gperf libxslt docbook_xsl

wget https://www.freedesktop.org/software/appstream/releases/AppStream-0.14.6.tar.xz

cd AppStream-0.14.6

mkdir build
cd build

CC="gcc -flto -mtune=generic -Os -pipe" CXX="g++ -flto -mtune=generic -Os -pipe -fno-exceptions -fno-rtti" meson --prefix=/usr/local --localstatedir=/var --buildtype=plain -Dvapi=true -Dapidocs=false -Dinstall-docs=false

edit build.ninja
delete line with xsltproc

ninja [0m 1.51s]
sudo ninja install

AppStream 0.14.6

  User defined options
    buildtype    : plain
    localstatedir: /var
    prefix       : /usr/local
    apidocs      : false
    install-docs : false
    vapi         : true