tce-load -i compiletc

https://github.com/rhboot/efivar/releases/download/37/efivar-37.tar.bz2

cd efivar-37

edit Make/defaults
prefix	?= /usr/local/
libdir	?= $(prefix)/lib/
OPTIMIZE ?= 
CFLAGS	?= $(OPTIMIZE)

make CC="gcc -flto -fuse-linker-plugin -mtune=generic -Os -pipe" CXX="g++ -flto -fuse-linker-plugin -mtune=generic -Os -pipe -fno-exceptions -fno-rtti" [0m 6.96s]

sudo make install