Some tips for compiling Apertium on void linux (may be useful for other distros)
I needed to install these: pkg-config, lex, libtool, autoconf, automake
I needed to put utf8.h inside the utf8cpp folder and copy to /usr/include

LD_LIBRARY_PATH=/usr/local/lib64:${LD_LIBRARY_PATH}
PKG_CONFIG_PATH=/usr/local/lib64/pkgconfig:${PKG_CONFIG_PATH}
instead of
LD_LIBRARY_PATH=/usr/local/lib64:${LD_LIBRARY_PATH}
PKG_CONFIG_PATH=/usr/local/lib64/pkgconfig:${PKG_CONFIG_PATH}
Since lttoolbox is installed to lib64, although apertium libs are installed to lib
idk if this can be changed

I don't know if this is the most correct way to deal with this, I got an error
while trying to install the la-es pair, like make not finding libapertium, maybe
I should just copy it into lib64? I don't know, I couldn't use it anyways since I
would need to compile apertium-spa first and I need to compile vislcg3 and I need
a multi-hundred megabyte devel package for that and Idk I don't want to do that
today...