#20 grep error message during configure

[Larry W. Virden]

platform: sparc solaris 8
code: tcl 8.6 and trf 2.1.3.2009.01.16.18.17.20 source from teapot repository

$ mkdir trf
$ cd trf
$ unzip ../package-Trf-2.1.3.2009.01.16.18.17.20-source.zip
$ cd unix
$ ../configure --prefix=/projects/sprs_lwv/tcl86 --enable-shared --enable-symbols --enable-stubs --with-ssl=/projects/intranet CC=/opt/SUNWspro/bin/cc

:
checking for libz library... /usr/lib
checking for directory with ssl.h... /projects/intranet/include
grep: illegal option -- q
Usage: grep -hblcnsviw pattern file . . .
checking for ssl libcrypto library (for message digests)... /projects/intranet/lib
:

The process then goes on appearing to work, but the illegal option for grep seems like a potential issue.