On Fri, Nov 18, 2022 at 1:17 AM Tiezhu Yang <yangtiezhu@xxxxxxxxxxx> wrote:
The latest version of grep claims the egrep is now obsolete so the build
now contains warnings that look like:
egrep: warning: egrep is obsolescent; using grep -E
fix this up by moving the related file to use "grep -E" instead.
sed -i "s/egrep/grep -E/g" `grep egrep -rwl tools/perf`
Here are the steps to install the latest grep:
wget http://ftp.gnu.org/gnu/grep/grep-3.8.tar.gz
tar xf grep-3.8.tar.gz
cd grep-3.8 && ./configure && make
sudo make install
export PATH=/usr/local/bin:$PATH
Signed-off-by: Tiezhu Yang <yangtiezhu@xxxxxxxxxxx>
Hi Tiezhu,
installing a newer grep tool in order to build/test perf is somewhat
burdensome, as such I don't think we should merge this change. Looking
at my Debian derived distro. I have grep 3.7, so I'd need to do this.
I imagine the majority of people are using a grep earlier than 3.8. I
agree there is a problem perhaps we can:
- rewrite to just need grep and not egrep;
- rewrite in a stable language with regex support, perhaps python;
- have a grep/egrep wrapper that selects based on version number.