I appogize if this is covered somewhere, but as is typical for GNU stuff I have looked around and not found the info. I built my own grep by pulling down the couse but my version runs some 30 times slower and a very large file I am grepping. I did not install it, but I am running it out of build directory. After running ./confugre I had CFLAGS with -g -O2, which I tried changing to -O3, to no avail.
Here is the verision info: --- mygrep --version grep (GNU grep) 2.5 Copyright 1988, 1992-1999, 2000, 2001 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. ---- grep --version grep (GNU grep) 2.5.1 Copyright 1988, 1992-1999, 2000, 2001 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. ---- Here is a make output line for grep.c after I change to "-O3" gcc -DHAVE_CONFIG_H -I. -I. -I.. -I../intl -I../lib -DLOCALEDIR=\"/usr/local/share/locale\" -O3 -c `test -f grep.c || echo './'`grep.c ----- What I was trying to do. I comonly want to pass a very long list of files to grep. I use find to generate a list of files but I also filter these to exclude some paths. The list is fairly static. I understand I could use the new options --include, and --exclude options along with --recurse to get the same effect, but I want to use this list directly. So I pulled down the code to see how difficult this feature would be to add, it is looks very easy to do except for this performance issues. Thanks, emilio -- ------ emilio
