tce-load -i compiletc gtk3-dev enchant2-dev vala-dev gobject-introspection-dev iso-codes gtk3-gir

https://downloads.sourceforge.net/project/gtkspell/3.0.10/gtkspell3-3.0.10.tar.xz

cd /usr/src/gtkspell3-3.0.10

edit build/install-sh
#!/bin/sh

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 --localstatedir=/var

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

make [0m 10.80s]
sudo make install

Configuration summary for gtkspell3 3.0.10:
  - Host:                  x86_64-pc-linux-gnu
  - GTK+2 support:         no
  - GTK+3 support:         yes
  - GObject introspection: yes
  - Vala bindings:         yes
  - iso-codes support:     yes
  - Documentation:         no