Ok yes you are right had to go to /tmp/yaourt-tmp-root/aur-zoneminder, and run there makepkg -g --asroot PKGBUILD 
got an outcome string of md5 checksums, copied the stirng into the PKGBUILD as shown here.
$this->bbcode_second_pass_code('', '# This is a ZoneMinder PKGBUILD file.
# Contributor: Ross melin <rdmelin@gmail.com>
arch=('arm')
pkgname=zoneminder
pkgver=1.24.2
pkgrel=2
pkgdesc="Capture, analyse, record and monitor video security cameras."
arm=('i686')
url="http://www.zoneminder.com"
license=('GPL')
groups=()
depends=('apache' 'php' 'mysql' 'pcre' 'openssl' 'ffmpeg' 'perl-php-serialization' 'perl-libwww' 'perl-date-manip' 'perl-unicode-map' 'perl-dbi' 'perl-dbd-mysql' 'perl-io-stringy' 'perl-mime-lite'
'perl-timedate' 'perl-x10' 'perl-time-modules' 'perl-net-smtp-ssl' 'perl-sys-mmap' 'sudo' 'libv4l')
makedepends=()
provides=(zoneminder)
conflicts=(zoneminder)
replaces=()
backup=()
options=()
install=zoneminder.install
source=(http://www2.zoneminder.com/downloads/ZoneMinder-1.24.2.tar.gz \
        zm.rc.d \
        zm.conf.patch \
  zmupdate.patch \
  Controls_Orbit.sql \
  Makefile.patch \
  zm_libv4l.patch \
        zminit.arch \
  customdb \
  httpd-zm.conf \
  zmfilter.pl \
  http://en.sourceforge.jp/projects/sfnet_jscalendar/downloads/jscalendar/1.0/jscalendar-1.0.zip \
  http://www.charliemouse.com:8080/code/cambozola/cambozola-latest.tar.gz \
  zmeventbackup)
noextract=()
md5sums=('550d2f8f08852134028c3b1cf8fa437f'
         'b20fb25b187eb6abb21321e153a7fb25'
         '1d2a4233af027452ae38a3e0b6d062ee'
         '971947cc093f7d909f39c2ce83846f35'
         '5033bc098bf497c8aed1fc1b3c9c5f9c'
         'b7b532b39f0985c2b995c7923728bc1b'
         '60f5654582873da54796a0cf0641dc3c'
         'f9720872736f26d17bc49d8725b75ae4'
         '4ace13d1e20934abe192ef7372c75988'
         '00201eba9c0a5d1ed14b10cc55410698'
         '80c52cc3575073a7462ff6a54886a345'
         'c6bad2098795121cbea6552c53faa06a'
         '602daba851e726e2399445fda3ca718f'
         '8b40137b6ff54f2fb26104b70edd22e9')
build() {
        cd "$srcdir/ZoneMinder-$pkgver"
        patch -p1 < $srcdir/zm.conf.patch || read
  patch -p1 < $srcdir/zmupdate.patch || read
  patch -p1 -b < $srcdir/zm_libv4l.patch || read
  cat ../Controls_Orbit.sql >> db/zm_create.sql.in
  sed -i '22s/^$/#include <cstdio>/' \
  src/zm_utils.cpp
  sed -i 's/$max_socket_tries = 3;/$max_socket_tries = 15;/' \
  web/ajax/stream.php || read
./configure --prefix=/usr \
                --sysconfdir=/etc \
                --with-webuser=http  \
                --with-webgroup=http \
                --with-mysql=/usr  \
                --with-webdir=/var/lib/zm/www  \
    --with-cgidir=/var/lib/zm/cgi-bin \
    --with-extralibs="-lv4l1 -lv4l2" \
    --bindir=/usr/lib/zm/bin \
    --enable-mmap=no \
    ZM_SSL_LIB=openssl
  patch -p1 < $srcdir/Makefile.patch ||read
        make || return 1
        make DESTDIR="$pkgdir" install || return 1
        install -D -m 700 $startdir/src/zminit.arch  $startdir/pkg/usr/lib/zm/bin/zminit
        install -D -m 700 $startdir/src/zm.rc.d  $startdir/pkg/etc/rc.d/zm
  install -D -m 700 scripts/zmdbbackup  $startdir/pkg/usr/lib/zm/bin/zmdbbackup
  install -D -m 700 scripts/zmdbbackup  $startdir/pkg/usr/lib/zm/bin/zmdbbackup
  install -D -m 700 scripts/zmdbrestore  $startdir/pkg/usr/lib/zm/bin/zmdbrestore
  install -D -m 700 scripts/zmeventdump  $startdir/pkg/usr/lib/zm/bin/zmeventdump
  install -D -m 700 scripts/zmlogrotate.conf  $startdir/pkg/etc/logrotate.d/zm
  install -D -m 700 $startdir/src/zmeventbackup  $startdir/pkg/etc/cron.hourly/zmeventbackup
  install -D -m 755 $startdir/src/zmfilter.pl $startdir/pkg/usr/lib/zm/bin/zmfilter.pl
 tar -zxf $startdir/src/cambozola-0.50.tar.gz
  install -m 644  cambozola-0.50/dist/cambozola.jar $startdir/pkg/var/lib/zm/www/cambozola.jar
  mkdir -p  $startdir/pkg/etc/httpd/conf/extra/
  install -m 644 $startdir/src/httpd-zm.conf $startdir/pkg/etc/httpd/conf/extra/httpd-zm.conf
  unzip  $startdir/src/jscalendar-1.0.zip
  mv $startdir/src/jscalendar-1.0 $startdir/pkg/var/lib/zm/www/tools/jscalendar
  install -D -m 700 $startdir/src/customdb $startdir/pkg/usr/lib/zm/upgrade/customdb
        install -D  db/zm*.sql $startdir/pkg/usr/lib/zm/upgrade/
  mkdir -p $startdir/pkg/var/run/zm
  ### remove special files
  find $startdir/pkg/ -name "perllocal.pod" \
    -o -name ".packlist"                \
    -o -name "*.bs"                     \
    |xargs -i rm -f {}
}
# vim:set ts=2 sw=2 et:')
get this message now when running the same makepkg -g --asroot PKGBUILD, its a bit silly but how do I install this now as pacman -U zoneminder.install doesnt do anything
$this->bbcode_second_pass_code('', '==> Retrieving Sources...
  -> Found ZoneMinder-1.24.2.tar.gz
  -> Found zm.rc.d
  -> Found zm.conf.patch
  -> Found zmupdate.patch
  -> Found Controls_Orbit.sql
  -> Found Makefile.patch
  -> Found zm_libv4l.patch
  -> Found zminit.arch
  -> Found customdb
  -> Found httpd-zm.conf
  -> Found zmfilter.pl
  -> Found jscalendar-1.0.zip
  -> Found cambozola-latest.tar.gz
  -> Found zmeventbackup
==> Generating checksums for source files...
md5sums=('550d2f8f08852134028c3b1cf8fa437f'
         'b20fb25b187eb6abb21321e153a7fb25'
         '1d2a4233af027452ae38a3e0b6d062ee'
         '971947cc093f7d909f39c2ce83846f35'
         '5033bc098bf497c8aed1fc1b3c9c5f9c'
         'b7b532b39f0985c2b995c7923728bc1b'
         '60f5654582873da54796a0cf0641dc3c'
         'f9720872736f26d17bc49d8725b75ae4'
         '4ace13d1e20934abe192ef7372c75988'
         '00201eba9c0a5d1ed14b10cc55410698'
         '80c52cc3575073a7462ff6a54886a345'
         'c6bad2098795121cbea6552c53faa06a'
         '602daba851e726e2399445fda3ca718f'
         '8b40137b6ff54f2fb26104b70edd22e9')')
			
		