usage: ./build.sh [-c] [-nd] [-r ALL|level.name.build[:step]] [-h] [-t]

        -c                     Clean $PREFIX before processing build scripts.

        -i level.name.build    Insert link to pkg.build for the specified build script.

                               All consecutive scripts with higher build levels will

                               be renamed automatically.

        -nd                    Don't rm(1) and re-download tarballs when not required.

        -h                     Show this screen.

        -pt                    Enable pedantic mode. In addition to the warnings emitted

                               whenever a potentially dangerous operation is invoked by

                               the build scripts, manual confirmation will be required.

                               This currently only includes rm_if_exists().

        -r ALL|level.name.build[:step]

                               Restart all or the specified build script(s) completely

                               or at the optionally specified build step. Currently defined

                               build steps are: fetch extract build_dir patch configure clean

                               build install configure1 configure2 build1 build2 install1 install2.

        -t[.gz|.bz2|.xz]       Produce binary distribution and source tarballs containing $PREFIX

                               sans $WORKDIR and $PREFIX/src/midipix_build and $WORKDIR sans top-

                               level regular files at the end of a build with zero failures. The

                               tarballs will be compressed with either gzip, bzip2, or xz and signed

                               with GPG; the default compression is xz.

        -x                     Set the xtrace sh(1)ell option for debugging purposes.

        -X                     Set the xtrace sh(1)ell option and compile a tarball containing

                               build.log and $PKG_SUBDIR. Use this option if something goes

                               wrong and provide an URL to the tarball in <irc://irc.freenode.net/midipix>.

        Packages that are built by pkg.build will apply local patches in $WORKDIR

        named ${PKG_SUBDIR}.local.patch.

        Examples:

        ./build.sh -r ALL

        Forcibly restart the entire build.

        ./build.sh -r 301.coreutils.build

        Completely restart the coreutils build.

        ./build.sh -r 301.coreutils.build:configure,build,install

        Restart the configure, build, and install steps of the coreutils build script.

        ./build.sh -r 205.psxscl.build GITROOT_HEAD=... PKG_PSXSCL_CFLAGS_CONFIGURE_EXTRA=-DPSX_INTERNAL_STRACE

        Build psxscl from the internal repository with strace enabled.

        ./build.sh -c -r ALL GITROOT_HEAD=...

        Clean $PREFIX and forcibly rebuild everything.

This script has been tested on the following platforms:

Arch Linux 2016.02.01 (x86_64)

CentOS v7.2.1511 (Core) (x86_64)

Debian GNU/Linux v8.5 (stable) (jessie) (x86_64)

openSUSE 20150612 (Tumbleweed) (x86_64)