tce-load -i compiletc tcl-dev mesa-dev libXft-dev

wget https://downloads.sourceforge.net/tcl/tk8.6.10-src.tar.gz

cd tk8.6.10
cd unix

CC="gcc -march=armv8-a+crc -mtune=cortex-a72 -Os -pipe" CXX="g++ -march=armv8-a+crc -mtune=cortex-a72 -Os -pipe -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local --localstatedir=/var --disable-static

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

make [2m 16.98s]

sed -e "s@^\(TK_SRC_DIR='\).*@\1/usr/local/include'@" -e "/TK_B/s@='\(-L\)\?.*unix@='\1/usr/local/lib@" -i tkConfig.sh

sudo make install
sudo make install-private-headers
sudo ln -sf wish8.6 /usr/local/bin/wish
sudo chmod 755 /usr/local/lib/libtk8.6.so