[BRLTTY] Minor build issue on brltty-6.9 branch

[Elias Oltmanns]

On 2026-02-09 at 22:05:42 (+0100), Dave Mielke <Dave at mielke.cc> wrote:
> [quoted lines by Elias Oltmanns on 2026/02/09 at 21:50 +0100]
>> $ Tools/luacmd libdir
>> /usr/local/lib/lua/5.4
> 
> Please go into lua itself and let us know the output of this command:
> 
>    print(package.cpath)

/usr/local/lib/lua/5.4/?.so;/usr/lib/lua/5.4/?.so;/usr/local/lib/lua/5.4/loadall.so;/usr/lib/lua/5.4/loadall.so;./?.so

Interesting, I wonder where it is getting this from. I don't know the
first thing about Lua, so I can only guess what might be of interest.
There is some information beneath /usr/share/doc/lua and I can check
later whether I can find something enlightening there. Meanwhile, I
checked this:

$ cat /usr/lib/pkgconfig/lua.pc
V=5.4
R=5.4.8

prefix=/usr
INSTALL_BIN=${prefix}/bin
INSTALL_INC=${prefix}/include
INSTALL_LIB=${prefix}/lib
INSTALL_MAN=${prefix}/man/man1
INSTALL_LMOD=${prefix}/share/lua/${V}
INSTALL_CMOD=${prefix}/lib/lua/${V}
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include

Name: Lua
Description: An Extensible Extension Language
Version: ${R}
Requires:
Libs: -L${libdir} -llua -lm
Cflags: -I${includedir}

That doesn't look suspicious to me, but then again, I probably just
looking in the wrong place.

Thanks,

Elias