Bugzilla Bug 125389

Starting with Debian's HPPA port of ghc (Glasgow Haskell Compiler), I keyworded
dev-lang/ghc-6.4.1-r2 with ~hppa, added a few tests for hppa to disable certain
unsupported features on the hppa architecture, and then successfully completed
a build of dev-lang/ghc-6.4.1-r2 on hppa.  I then used the instructions from
Duncan Coutts in bug 88362, comment #20 to produce a binary package of my build
for distfiles to be used as dev-lang/ghc-bin-6.4.1, which is needed to
bootstrap your own native build of ghc.

I can make my ghc-bin-6.4.1 binpkg for hppa available, or here are the steps
you would take to reproduce my efforts for yourself:

1.  Download
http://ftp.debian.org/debian/pool/main/g/ghc6/ghc6_6.4.1-1_hppa.deb, which is
the Debian hppa binary package of ghc for hppa.

2.  Use alien to convert this archive to a tgz file.  Then repack it as a .tbz2
file for the ghc-bin ebuild.

3.  Move the .tbz2 file to /usr/portage/distfiles/ghc-bin-6.4.1-hppa.tbz2.

4.  Emerge dev-libs/gmp if you do not already have it, as ghc and ghc-bin both
need this dependency in order to run.

5.  Use the attached ghc-bin-6.4.1 ebuild file to emerge ghc-bin for ~hppa. 
You may need to use ebuild to recompute the digests for this, as needed.

6.  Once this is done, use the attached ghc-6.4.1-r2.ebuild,
cabal-1.1.3-r1.ebuild, and haskell-cabal.eclass to emerge dev-lang/ghc-6.4.1-r2
and dev-haskell/cabal-1.1.3-r1 for hppa.

7.  Now you should have a working build of ghc in /usr.  ghc-bin is no longer
necessary at this point; you can unmerge it if you like.

ghc-bin is needed in case future revisions of ghc come out (e.g. 6.4.2), as you
need a way to compile a new version of ghc using an existing ghc binary build. 
If you have previously successfully emerged ghc, then you do not need ghc-bin
to bootstrap a new release of ghc.  The existing ghc that you have emerged will
work.

I will also attach a few sample Haskell programs to try out.  Compiling and
running them is relatively straightforward:

  $ ghc -o Hello Hello.hs
  $ ./Hello

  $ ghc -o Factorial Factorial.hs
  $ ./Factorial 123

If you have any questions, please do not hesitate to get in touch with me.  I
look forward to working with you to add ghc support to hppa.

Created an attachment (id=81631) [edit]
ghc-bin-6.4.1 ebuild keyworded for ~hppa

Created an attachment (id=81632) [edit]
ghc-6.4.1-r2 ebuild keyworded for ~hppa

Created an attachment (id=81633) [edit]
cabal-1.1.3-r1 ebuild keyworded for ~hppa

Created an attachment (id=81634) [edit]
haskell-cabal eclass modified to support ~hppa

hamal ~ # emerge --info
Portage 2.0.53 (default-linux/hppa/2005.0, gcc-3.3.6, glibc-2.3.4.20040808-r1,
2.6.15.1-pa4-livecd32 parisc)
=================================================================
System uname: 2.6.15.1-pa4-livecd32 parisc PA7200 (PCX-T')
Gentoo Base System version 1.6.14
dev-lang/python:     2.4.2
sys-apps/sandbox:    1.2.17
sys-devel/autoconf:  2.13, 2.59-r6
sys-devel/automake:  1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r1
sys-devel/binutils:  2.16.1
sys-devel/libtool:   1.5.22
virtual/os-headers:  2.6.11-r2
ACCEPT_KEYWORDS="hppa"
AUTOCLEAN="yes"
CBUILD="hppa1.1-unknown-linux-gnu"
CFLAGS="-Os -pipe -march=1.1 -mschedule=7200"
CHOST="hppa1.1-unknown-linux-gnu"
CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3/share/config
/usr/share/config /var/qmail/control"
CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d"
CXXFLAGS="-Os -pipe -march=1.1 -mschedule=7200"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoconfig distlocks sandbox sfperms strict"
GENTOO_MIRRORS="http://gentoo-distfiles.mirrors.tds.net"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="hppa berkdb bitmap-fonts bzip2 crypt cups expat foomaticdb fortran gdbm
gmp gpm imlib ipv6 libwww ncurses nls pam perl pic python readline spell ssl
tcpd truetype-fonts type1-fonts udev xml2 zlib userland_GNU kernel_linux
elibc_glibc"
Unset:  ASFLAGS, CTARGET, LANG, LC_ALL, LDFLAGS, LINGUAS, PORTDIR_OVERLAY

hamal ~ #

Created an attachment (id=81635) [edit]
"hello world" example program to test

Created an attachment (id=81636) [edit]
example factorial program to test

compile this with:

$ ghc -o Factorial Factorial.hs

run it like this:

$ ./Factorial 123

123! =
12146304367025329675766243241881295855454217088483382315328918161829235892362167668831156960612640202170735835221294047782591091570411651472186029519906261646730733907419814952960000000000000000000000000000

(Just removing myself from the CC since I'm already included in
haskell@gentoo.org)

Just to note that if anyone from the hppa herd wants to talk to us about this
one then come find us in #gentoo-haskell.

(In reply to comment #0)

> 1.  Download
> http://ftp.debian.org/debian/pool/main/g/ghc6/ghc6_6.4.1-1_hppa.deb, which is
> the Debian hppa binary package of ghc for hppa.

Make that http://ftp.debian.org/debian/pool/main/g/ghc6/ghc6_6.4.1-2_hppa.deb

Rej: thanks so much for all your work in bootstrapping ghc for hppa and getting
it into portage. Closing this bug.

Marked ~hppa:
    dev-lang/ghc-bin-6.4.1
    dev-lang/ghc-6.4.1-r2
    dev-haskell/cabal-1.1.3-r1
    dev-haskell/haddock-0.7

... and closing this bug.