Estimated build time: &grep-time-tools; Estimated required disk space: &grep-compsize-tools; &aa-grep-shortdesc; &aa-grep-dep;   Prepare Grep to be compiled: ./configure --prefix=/tools \     --disable-perl-regexp --with-included-regex The meaning of the configure options: --disable-perl-regexp: This makes sure that grep does not get linked against a PCRE library that may be present on the host, but would not be available once we enter the chroot environment. --with-included-regex: This ensures that Grep uses its internal regular expression code. Without it, it will use the code from Glibc, which is known to be slightly buggy. Compile the programs: make This package has a test suite available which can perform a number of checks to ensure it built correctly. Should you choose to run it, the following command will do so: make check Then install them and their documentation: make install