Preliminary bindist rule

[alpmestan]

This patch only ship <build root>/{bin, lib} and the few make build system related files that are needed to support a simple

./configure [--prefix=PATH] && make install

workflow. The current binary distributions of GHC support a wider range of parameters, but I figured it would be a good thing to start with this and enhance it as we all see fit and perhaps using feedback from GHC HQ (@bgamari in particular) and bindist users.

For reference, here's what the configure script advertises:

$ ./configure --help
`configure' configures The Glorious Glasgow Haskell Compilation System 8.5.20180319 to adapt to many kinds of systems.

Usage: ./configure [OPTION]... [VAR=VALUE]...

To assign environment variables (e.g., CC, CFLAGS...), specify them as
VAR=VALUE.  See below for descriptions of some of the useful variables.

Defaults for the options are specified in brackets.

Configuration:
  -h, --help              display this help and exit
      --help=short        display options specific to this package
      --help=recursive    display the short help of all the included packages
  -V, --version           display version information and exit
  -q, --quiet, --silent   do not print `checking ...' messages
      --cache-file=FILE   cache test results in FILE [disabled]
  -C, --config-cache      alias for `--cache-file=config.cache'
  -n, --no-create         do not create output files
      --srcdir=DIR        find the sources in DIR [configure dir or `..']

Installation directories:
  --prefix=PREFIX         install architecture-independent files in PREFIX
                          [/usr/local]
  --exec-prefix=EPREFIX   install architecture-dependent files in EPREFIX
                          [PREFIX]

By default, `make install' will install all the files in
`/usr/local/bin', `/usr/local/lib' etc.  You can specify
an installation prefix other than `/usr/local' using `--prefix',
for instance `--prefix=$HOME'.

For better control, use the options below.

Fine tuning of the installation directories:
  --bindir=DIR            user executables [EPREFIX/bin]
  --sbindir=DIR           system admin executables [EPREFIX/sbin]
  --libexecdir=DIR        program executables [EPREFIX/libexec]
  --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
  --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
  --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
  --libdir=DIR            object code libraries [EPREFIX/lib]
  --includedir=DIR        C header files [PREFIX/include]
  --oldincludedir=DIR     C header files for non-gcc [/usr/include]
  --datarootdir=DIR       read-only arch.-independent data root [PREFIX/share]
  --datadir=DIR           read-only architecture-independent data [DATAROOTDIR]
  --infodir=DIR           info documentation [DATAROOTDIR/info]
  --localedir=DIR         locale-dependent data [DATAROOTDIR/locale]
  --mandir=DIR            man documentation [DATAROOTDIR/man]
  --docdir=DIR            documentation root
                          [DATAROOTDIR/doc/ghc-8.5.20180319]
  --htmldir=DIR           html documentation [DOCDIR]
  --dvidir=DIR            dvi documentation [DOCDIR]
  --pdfdir=DIR            pdf documentation [DOCDIR]
  --psdir=DIR             ps documentation [DOCDIR]

System types:
  --build=BUILD     configure for building on BUILD [guessed]
  --host=HOST       cross-compile to build programs to run on HOST [BUILD]
  --target=TARGET   configure for building compilers for TARGET [HOST]

Optional Features:
  --disable-option-checking  ignore unrecognized --enable/--with options
  --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
  --disable-ld-override   Prevent GHC from overriding the default linker used
                          by gcc. If ld-override is enabled GHC will try to
                          tell gcc to use whichever linker is selected by the
                          LD environment variable. [default=override enabled]

Optional Packages:
  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
  --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
  --with-gmp-includes     directory containing gmp.h
  --with-gmp-libraries    directory containing gmp library
  --with-hs-cpp=ARG       Path to the (C) preprocessor for Haskell files
                          [default=autodetect]
  --with-hs-cpp-flags=ARG Flags to the (C) preprocessor for Haskell files
                          [default=autodetect]

Some influential environment variables:
  CC          C compiler command
  CFLAGS      C compiler flags
  LDFLAGS     linker flags, e.g. -L<lib dir> if you have libraries in a
              nonstandard directory <lib dir>
  LIBS        libraries to pass to the linker, e.g. -l<library>
  CPPFLAGS    (Objective) C/C++ preprocessor flags, e.g. -I<include dir> if
              you have headers in a nonstandard directory <include dir>
  CPP         C preprocessor

Use these variables to override the choices made by `configure' or to help
it to find libraries and programs with nonstandard names/locations.

Report bugs to <glasgow-haskell-bugs@haskell.org>.

while our trivial Makefile from this patch doesn't care about anything but $prefix.

[alpmestan]

I just want to add a few words about this in the README before we (possibly) merge.

[alpmestan]

Done.

[snowleopard]

@alpmestan Great, thank you!

This looks fine, but can we make the naming a bit more consistent? I propose the following:

• Source distribution: use source-dist as the target name and SourceDist.hs as the module name.
• Binary distribution: use binary-dist as the target name and BinaryDist.hs as the module name.

If you agree with this naming, could you rename sdist-ghc to source-dist and Bindist to BinaryDist?

[alpmestan]

@snowleopard Sounds good. I'll make the change right away.

[alpmestan]

Done.

[snowleopard]

@alpmestan Awesome, thank you! Merged.

[snowleopard]

@alpmestan Please reopen with BinaryDist.hs committed.

[alpmestan]

Oh dear. Sorry!