[GHC] #9772: Building documentation alone is broken

[GHC]

#9772: Building documentation alone is broken
-------------------------------------+-------------------------------------
       Reporter:  jstolarek          |                   Owner:
           Type:  bug                |                  Status:  new
       Priority:  normal             |               Milestone:  7.10.1
      Component:  Build System       |                 Version:  7.9
       Keywords:                     |        Operating System:
   Architecture:  Unknown/Multiple   |  Unknown/Multiple
     Difficulty:  Unknown            |         Type of failure:  Building
     Blocked By:                     |  GHC failed
Related Tickets:                     |               Test Case:
                                     |                Blocking:
                                     |  Differential Revisions:
-------------------------------------+-------------------------------------
 At the moment it seems that the only way to build documentation is to
 actually build all of GHC, which is nonsense. Methods of building
 documentation described in Building/Docs are broken:

 {{{
 To build just the Haddock docs for a given library, do this:
     cd libraries/base
     make html stage=0 FAST=YES
 }}}
 That ends with errors. See `haddock_for_lib.log` attachement.

 {{{
 To build a document on its own, for example the Users Guide, do this:

     cd docs/users_guide
     make html stage=0 FAST=YES

 substitute 'html' for 'pdf' or 'ps' to build other types of documentation.
 }}}
 That also ends with errors. See `users_guide.log` attachement.

 For above experiments I used the following lines in my `mk/build.mk` file:

 {{{
 HADDOCK_DOCS       = YES
 BUILD_DOCBOOK_HTML = YES
 BUILD_DOCBOOK_PS   = NO
 BUILD_DOCBOOK_PDF  = NO
 }}}
 Then I run `perl boot && ./configure`. I didn't run `make`, just the above
 instructions. My configure returns this:

 {{{
 Configure completed successfully.

    Building GHC version  : 7.9.20141105

    Build platform        : x86_64-unknown-linux
    Host platform         : x86_64-unknown-linux
    Target platform       : x86_64-unknown-linux

    Bootstrapping using   : /home/killy/.ghc-sandbox/bin/ghc
       which is version   : 7.8.3

    Using gcc                 : /usr/bin/gcc
       which is version       : 4.5.1
    Building a cross compiler : NO
    cpp       : /usr/bin/gcc
    cpp-flags : -E -undef -traditional
    ld        : /usr/bin/ld
    Happy     : /home/killy/.cabal/bin/happy (1.19.4)
    Alex      : /home/killy/.cabal/bin/alex (3.1.3)
    Perl      : /usr/bin/perl
    dblatex   : /usr/bin/dblatex
    xsltproc  : /usr/bin/xsltproc

    Using LLVM tools
       llc   : /usr/bin/llc
       opt   : /usr/bin/opt
    HsColour : /home/killy/.cabal/bin/HsColour

    Building DocBook HTML documentation : NO
    Building DocBook PS documentation   : YES
    Building DocBook PDF documentation  : YES
 }}}

 I'm setting the milestone to 7.10.1. It's annoying to have this feature of
 the build system broken and it would be great to have this fixed.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9772>
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