conditional "LIBUNISTRING_COMPILE_UNIWIDTH_WIDTH" was never defined.

[Gavin Smith]

Hello,

I am trying to update Texinfo to use the latest gnulib code.

After running gnulib --add-import and running configure, the
configure stops with the following error:

configure: error: conditional "LIBUNISTRING_COMPILE_UNIWIDTH_WIDTH" was never 
defined.
Usually this means the macro was only invoked conditionally.

I believe this comes from the lines

Makefile.am:
if LIBUNISTRING_COMPILE_UNIWIDTH_WIDTH
lib_SOURCES += uniwidth/width.c
endif

in the modules/uniwidth/width file.

I could not find where the LIBUNISTRING_COMPILE_UNIWIDTH_WIDTH conditional
was supposed to be defined.  That string does not appear anywhere else
in the gnulib sources that I could see.  I'm guessing it is supposed to
come from some libunistring library.

I'm attaching config.log if that helps to track down the error.

config.log
Description: Text document