tce-load -i compiletc meson gobject-introspection-dev json-glib-dev gnutls35-dev gpgme-dev vala-dev json-glib-gir

wget https://github.com/hughsie/libjcat/archive/refs/tags/0.1.12.tar.gz

cd libjcat-0.1.12

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 --libexecdir=/usr/local/lib/libjcat -Dgtkdoc=false

ninja [0m 4.98s]
sudo ninja install

libjcat 0.1.12

  User defined options
    buildtype    : plain
    libexecdir   : /usr/local/lib/libjcat
    localstatedir: /var
    prefix       : /usr/local
    gtkdoc       : false