In this section we begin by taking a look at a complete simple Portfile; then we see how to augment default phases by defining pre- and post- phases, how to override default phases, and finally how to eliminate port phases.
# -*- coding: utf-8; mode: tcl; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- vim:fenc=utf-8:ft=tcl:et:sw=4:ts=4:sts=4
PortSystem          1.0
name                rrdtool
version             1.2.23
categories          net
platforms           darwin
license             GPL-2+
maintainers         julesverne
description         Round Robin Database
long_description    RRDtool is a system to store and display time-series data
homepage            https://people.ee.ethz.ch/~oetiker/webtools/rrdtool/
master_sites        https://oss.oetiker.ch/rrdtool/pub/ \
                    ftp://ftp.pucpr.br/rrdtool/
checksums           rmd160  7bbfce4fecc2a8e1ca081169e70c1a298ab1b75a \
                    sha256  2829fcb7393bac85925090b286b1f9c3cd3fbbf8e7f35796ef4131322509aa53 \
                    size    1061530
depends_lib         path:bin/perl:perl5 \
                    port:tcl \
                    port:zlib
configure.args      --enable-perl-site-install \
                    --mandir=${prefix}/share/manTo augment a port's installation phase, and not override it, you may use pre- and post- installation phases as shown in this example.
post-destroot {
    # Install example files not installed by the Makefile
    file mkdir ${destroot}${prefix}/share/doc/${name}/examples
    file copy ${worksrcpath}/examples/ \
        ${destroot}${prefix}/share/doc/${name}/examples
}To override the automatic MacPorts installation phase processing, define your own installation phases as shown in this example.
destroot {
    xinstall -m 755 -d ${destroot}${prefix}/share/doc/${name}
    xinstall -m 755 ${worksrcpath}/README ${destroot}${prefix}/share/doc/${name}
}To eliminate a default phase, simply define a phase with no contents as shown.
build {}Because many software packages do not use
        configure, a keyword is provided to eliminate the
        configure phase. Another exception is the
        destroot phase may not be eliminated. See the
        chapter Portfile Reference for full
        information.