Hi, It seems that the problem is derived from included regex.
If you use --without-included-regex, copy system regex.h to `lib' sub-directory and enable search.c:196. If you --with-included-regex, copy regex from glibc (2.3 or later) to `lib' sub-directory' % cp glibc-2.3.6/posix/reg* grep-2.5.4/lib
