#
# Building a standalone DiFX/Mark4 installation
#

These instructions assume you've downloaded certain DiFX sources
from the DiFX SVN repository into a directory here named difx-svn
(you can name it anything you like).

The difx2mark4 application trunk includes this file, and also
build-mark4 which is a modified version of build-difx which is
normally found in difx-svn/setup.  You'll need to copy build-mark4
to difx-svn/setup in order to proceed (it expects to be found in
that directory).

The installation is into DIFXROOT, which can be anywhere--it is
the parent of the difx-svn directory in this example.

.
│ # required sources, checked out where you like--I called it difx-svn
│
├── difx-svn
│   ├── setup
│   │   ├── build-difx
│   │   ├── build-mark4                  # copy of install script
│   │   └── setup.bash                   # you need to tweak this
│   ├── applications
│   │   ├── difx2mark4
│   │   │   └── trunk
│   │   │       ├── autom4te.cache
│   │   │       ├── build-mark4          # (install script)
│   │   │       ├── standalone-mark4.txt # (this file)
│   │   │       └── src
│   │   └── hops
│   │       └── trunk
│   │           ├── autom4te.cache
│   │           ├── correlator
│   │           │   └── CorAsc2
│   │           ├── data
│   │           │   └── ff_testdata
│   │           │       └── testdata
│   │           │           ├── 2843
│   │           │           │   └── 321-1701_0552+398
│   │           │           └── 3365
│   │           │               ├── 094-0644_HIGH
│   │           │               └── 094-0644_LOW
│   │           ├── help
│   │           │   └── aedit
│   │           ├── include
│   │           ├── m4
│   │           ├── postproc
│   │           │   ├── adump
│   │           │   ├── aedit
│   │           │   ├── alist
│   │           │   ├── fourfit
│   │           │   ├── fourmer
│   │           │   ├── fplot
│   │           │   └── fringex
│   │           ├── scripts
│   │           └── sub
│   │               ├── afio
│   │               ├── dfio
│   │               ├── util
│   │               └── vex
│   │                   └── text
│   ├── libraries
│   │   └── difxio
│   │       └── trunk
│   │           ├── autom4te.cache
│   │           ├── difxio
│   │           ├── m4
│   │           ├── tests
│   │           └── utils
│   └── utilities
│
│ # note the *empty* utilities directory
│ # create/modify setup/setup.bash and source it
│ # you will need to install pgplot (including cpgplot) and set PGPLOT_DIR
│ #
│ # can build in a separate build directory (and remove it later), e.g.
│ # mkdir build
│ # cd build
│ # ../difx-svn/setup/build-mark4 --reconf --force -v --noipp --mark4 2>&1 |\
│ # tee mark4.output
│
├── build
│   ├── applications
│   │   ├── difx2mark4
│   │   │   └── trunk
│   │   │       └── src
│   │   └── hops
│   │       └── trunk
│   │           ├── correlator
│   │           │   └── CorAsc2
│   │           ├── data
│   │           │   └── ff_testdata
│   │           ├── help
│   │           ├── include
│   │           ├── postproc
│   │           │   ├── adump
│   │           │   ├── aedit
│   │           │   ├── alist
│   │           │   ├── fourfit
│   │           │   ├── fourmer
│   │           │   ├── fplot
│   │           │   └── fringex
│   │           ├── scripts
│   │           └── sub
│   │               ├── afio
│   │               ├── dfio
│   │               ├── util
│   │               └── vex
│   └── libraries
│       └── difxio
│           └── trunk
│               ├── difxio
│               ├── tests
│               └── utils
│
│ # after the build completes, you should have these
│ # installed subdirectories of DIFXROOT
│
├── bin
├── include
│   ├── difxio
│   └── hops
├── lib
│   ├── hops
│   └── pkgconfig
└── share
    └── hops
        ├── text
        └── vhelp
            └── aedit

This was tested on a machine that never had DiFX and seems to work fine.