tce-load -i intltool glibc_gconv glibc_i18n_locale

cd libunistring-0.9.3

CC="gcc -flto -fuse-linker-plugin -march=i486 -mtune=i686 -Os -pipe" CXX="g++ -flto -fuse-linker-plugin -march=i486 -mtune=i686 -Os -pipe -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local --disable-static --localstatedir=/var

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

make
sudo make install

[test for iconv fails without glibc_*]