https://gcc.gnu.org/bugzilla/show_bug.cgi?id=40046
Eric Gallager <egallager at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED CC| |egallager at gcc dot gnu.org Resolution|--- |INVALID --- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> --- (In reply to Roman Marchenko from comment #0) > There is the following line in configure script: > > eval `${CC-cc} -E conftest.c | grep host_address=` > > Since I have GREP_OPTIONS variable in my environment which looks like > "GREP_OPTIONS=--color=always", some color codes are generated in grep's > output. The issue is the "eval ..." does not work properly in this case and > the host_address variable is empty. > > I have repaired the build by replacing the line with the following: > > eval `${CC-cc} -E conftest.c | grep --color=auto host_address=` The GREP_OPTIONS environment variable is deprecated; don't use it: https://www.gnu.org/software/grep/manual/html_node/Environment-Variables.html