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=` -- Summary: GCC build fails due to host_address variable is empty Product: gcc Version: 4.4.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: other AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: roman dot marchenko at mail dot ru GCC build triplet: i686-pc-linux-gnu GCC host triplet: i686-pc-linux-gnu GCC target triplet: i686-pc-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40046