tce-load -i libgpg-error-dev

cd libksba-1.3.0

CC="gcc -flto -fuse-linker-plugin -mtune=generic -Os -pipe" CXX="g++ -flto -fuse-linker-plugin -mtune=generic -Os -pipe -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local --disable-static

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

make
sudo make install

        Libksba v1.3.0 has been configured as follows:

        Platform:  x86_64-unknown-linux-gnu