tce-load -i compiletc gtk3-dev intltool desktop-file-utils itstool gobject-introspection-dev vala-dev wget unzip gtk3-gir

wget https://ftp.acc.umu.se/pub/GNOME/sources/gucharmap/12.0/gucharmap-12.0.1.tar.xz

download Blocks.txt DerivedAge.txt Names_list.txt Scripts.txt UnicodeData.txt Unihan.zip from https://www.unicode.org/Public/12.0.0/ucd/

cd gucharmap-12.0.1

CC="gcc -flto -mtune=generic -Os -pipe" CXX="g++ -flto -mtune=generic -Os -pipe -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local --disable-static --localstatedir=/var --enable-introspection --enable-vala --with-unicode-data=/tmp [--with-unicode-data=download]

make [0m 30.06s]
sudo make install