% Installing pandoc

These instructions explain how to install pandoc from source.
Binary packages or ports of pandoc are available for freebsd
and several linux distributions, so check your package manager.
There is also a Windows installer.

Quick install
-------------

1.  Install the [Haskell platform].  This will give you [GHC] and
the [cabal-install] build tool.

2.  Use `cabal` to install pandoc and its dependencies:

        cabal install pandoc

    This procedure will install the released version of pandoc,
    which will be downloaded automatically from HackageDB.
    If you want to install a modified or development version
    of pandoc instead, switch to the source directory and do
    as above, but without the 'pandoc':

        cabal install

3.  Make sure the `$CABALDIR/bin` directory is in your path.  You should
now be able to run `pandoc`:

        pandoc --help

4.  Make sure the `$CABALDIR/share/man/man1` directory is in your `MANPATH`.
You should now be able to access the `pandoc` man page:

        man pandoc

[GHC]: http://www.haskell.org/ghc/
[Haskell platform]: http://hackage.haskell.org/platform/
[cabal-install]: http://hackage.haskell.org/trac/hackage/wiki/CabalInstall

Custom install
--------------

This is a step-by-step procedure that offers maximal control
over the build and installation.  Most users should use the
quick install, but this information may be of use to packagers.
For more details, see the [Cabal User's Guide].

1.  Install dependencies:  in addition to the [Haskell platform],
you will need [zip-archive], [blaze-html], and [highlighting-kate].

2.  Configure:

        runghc Setup.hs configure --prefix=DIR --bindir=DIR --libdir=DIR \
          --datadir=DIR --libsubdir=DIR --datasubdir=DIR --docdir=DIR \
          --htmldir=DIR --program-prefix=PREFIX --program-suffix=SUFFIX \
          --mandir=DIR --flags=FLAGSPEC

    All of the options have sensible defaults that can be overridden
    as needed.

    `FLAGSPEC` is a list of Cabal configuration flags, optionally
    preceded by a `-` (to force the flag to `false`), and separated
    by spaces.  Pandoc's flags include:

    - `blaze_html_0_5`: Use blaze-html >= 0.5 (default yes)
    - `embed_data_files`: embed all data files into the binary (default no)

3.  Build:

        runghc Setup.hs build

4.  Build API documentation:

        runghc Setup.hs haddock --html-location=URL --hyperlink-source

5.  Copy the files:

        runghc Setup.hs copy --destdir=PATH

    The default destdir is `/`.

6.  Register pandoc as a GHC package:

        runghc Setup.hs register

    Package managers may want to use the `--gen-script` option to
    generate a script that can be run to register the package at
    install time.

Creating a relocatable binary
-----------------------------

It is possible to compile pandoc such that the data files
pandoc uses are embedded in the binary.  The resulting binary
can be run from any directory and is completely self-contained.

    cabal install hsb2hs  # a required build tool
    cabal install --flags="embed_data_files" citeproc-hs
    cabal configure --flags="embed_data_files"
    cabal build

You can find the pandoc executable in `dist/build/pandoc`.  Copy this wherever
you please.

[zip-archive]: http://hackage.haskell.org/package/zip-archive
[highlighting-kate]: http://hackage.haskell.org/package/highlighting-kate
[blaze-html]: http://hackage.haskell.org/package/blaze-html
[Cabal User's Guide]: http://www.haskell.org/cabal/release/latest/doc/users-guide/builders.html#setup-configure-paths


Running tests
-------------

Pandoc comes with an automated test suite integrated to cabal.
To build the tests:

    cabal configure --enable-tests && cabal build

Note: If you obtained the source via git, you should first do

    git submodule update --init templates

to populate the templates subdirectory.  (You can skip this step
if you obtained the source from a release tarball.)

To run the tests:

    cabal test

To run particular tests (pattern-matching on their names), use
the `-t` option:

    cabal test --test-options='-t markdown'

If you add a new feature to pandoc, please add tests as well, following
the pattern of the existing tests. The test suite code is in
`tests/test-pandoc.hs`. If you are adding a new reader or writer, it is
probably easiest to add some data files to the `tests` directory, and
modify `tests/Tests/Old.hs`. Otherwise, it is better to modify the module
under the `tests/Tests` hierarchy corresponding to the pandoc module you
are changing.

Running benchmarks
------------------

To build the benchmarks:

    cabal configure --enable-benchmarks && cabal build

To run the benchmarks:

    cabal bench

To use a smaller sample size so the benchmarks run faster:

    cabal bench --benchmark-options='-s 20'

To run just the markdown benchmarks:

    cabal bench --benchmark-options='markdown'

