tce-load -i compiletc npth-dev libgcrypt-dev libassuan-dev libksba-dev gnutls-dev libusb-dev

https://www.gnupg.org/ftp/gcrypt/gnupg/gnupg-2.2.20.tar.bz2

cd gnupg-2.2.20

CC="gcc -march=armv6zk -mtune=arm1176jzf-s -mfpu=vfp -Os -pipe" CXX="g++ -march=armv6zk -mtune=arm1176jzf-s -mfpu=vfp -Os -pipe -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local --localstatedir=/var --libexecdir=/usr/local/lib/gnupg2

find . -name Makefile -type f -exec sed -i 's/-g -O2//g' {} \;

make [3m 53.35s]
sudo make install

        GnuPG v2.2.20 has been configured as follows:

        Revision:  5094bb08e  (20628)
        Platform:  GNU/Linux (armv7l-unknown-linux-gnueabihf)

        OpenPGP:   yes
        S/MIME:    yes
        Agent:     yes
        Smartcard: yes 
        G13:       no
        Dirmngr:   yes
        Gpgtar:    yes
        WKS tools: yes

        Protect tool:      (default)
        LDAP wrapper:      (default)
        Default agent:     (default)
        Default pinentry:  (default)
        Default scdaemon:  (default)
        Default dirmngr:   (default)

        Dirmngr auto start:  yes
        Readline support:    no
        LDAP support:        no
        TLS support:         gnutls
        TOFU support:        yes
        Tor support:         yes