bison 2.4.1 on Msys Win7 /usr/local/share/bison/m4sugar/m4sugar.m4

[Dick Dunbar]

Msys works great, but I have this nagging problem with bison that
I just cannot figure out.  I see other complaints about this, and
usually it resolves to directories with blanks (Program Files).

My directories do not have blanks, and I'm unable to isolate this issue
with gdb or Windows procmon.

$ bison -d -y jamgram.y
C:\Msys\local\bin\bison.exe: cannot open file
`/usr/local/share/bison/m4sugar/m4sugar.m4': No such file or directory
$ ls -l /usr/local/share/bison/m4sugar/m4sugar.m4
-rw-r--r-- 1 dick Administrators 98348 May  8 16:19
/usr/local/share/bison/m4sugar/m4sugar.m4

I installed initially from: bison-2.4.1-1-msys-1.0.11-bin.tar.lzma
Then built the code from: bison-2.4.2 source (gnu.org)

Any suggestions?