Portability | portable |
---|---|
Maintainer | cabal-devel@haskell.org |
This is an alternative build system that delegates everything to the make
program. All the commands just end up calling make
with appropriate
arguments. The intention was to allow preexisting packages that used
makefiles to be wrapped into Cabal packages. In practice essentially all
such packages were converted over to the "Simple" build system instead.
Consequently this module is not used much and it certainly only sees cursory
maintenance and no testing. Perhaps at some point we should stop pretending
that it works.
Uses the parsed command-line from Distribution.Simple.Setup in order to build Haskell tools using a backend build system based on make. Obviously we assume that there is a configure script, and that after the ConfigCmd has been run, there is a Makefile. Further assumptions:
- ConfigCmd
- We assume the configure script accepts
--with-hc
,--with-hc-pkg
,--prefix
,--bindir
,--libdir
,--libexecdir
,--datadir
. - BuildCmd
- We assume that the default Makefile target will build everything.
- InstallCmd
- We assume there is an
install
target. Note that we assume that this does *not* register the package! - CopyCmd
- We assume there is a
copy
target, and a variable$(destdir)
. Thecopy
target should probably just invokemake install
recursively (e.g.$(MAKE) install prefix=$(destdir)/$(prefix) bindir=$(destdir)/$(bindir)
. The reason we can't invokemake install
directly here is that we don't know the value of$(prefix)
. - SDistCmd
- We assume there is a
dist
target. - RegisterCmd
- We assume there is a
register
target and a variable$(user)
. - UnregisterCmd
- We assume there is an
unregister
target. - HaddockCmd
- We assume there is a
docs
ordoc
target.
- module Distribution.Package
- data License
- = GPL (Maybe Version)
- | LGPL (Maybe Version)
- | BSD3
- | BSD4
- | MIT
- | PublicDomain
- | AllRightsReserved
- | OtherLicense
- | UnknownLicense String
- data Version = Version {
- versionBranch :: [Int]
- versionTags :: [String]
- defaultMain :: IO ()
- defaultMainArgs :: [String] -> IO ()
- defaultMainNoRead :: PackageDescription -> IO ()
Documentation
module Distribution.Package
This datatype indicates the license under which your package is
released. It is also wise to add your license to each source file
using the license-file field. The AllRightsReserved
constructor
is not actually a license, but states that you are not giving
anyone else a license to use or distribute your work. The comments
below are general guidelines. Please read the licenses themselves
and consult a lawyer if you are unsure of your rights to release
the software.
GPL (Maybe Version) | GNU Public License. Source code must accompany alterations. |
LGPL (Maybe Version) | Lesser GPL, Less restrictive than GPL, useful for libraries. |
BSD3 | 3-clause BSD license, newer, no advertising clause. Very free license. |
BSD4 | 4-clause BSD license, older, with advertising clause. You almost certainly want to use the BSD3 license instead. |
MIT | The MIT license, similar to the BSD3. Very free license. |
PublicDomain | Holder makes no claim to ownership, least restrictive license. |
AllRightsReserved | No rights are granted to others. Undistributable. Most restrictive. |
OtherLicense | Some other license. |
UnknownLicense String | Not a recognised license. Allows us to deal with future extensions more gracefully. |
data Version
A Version
represents the version of a software entity.
An instance of Eq
is provided, which implements exact equality
modulo reordering of the tags in the versionTags
field.
An instance of Ord
is also provided, which gives lexicographic
ordering on the versionBranch
fields (i.e. 2.1 > 2.0, 1.2.3 > 1.2.2,
etc.). This is expected to be sufficient for many uses, but note that
you may need to use a more specific ordering for your versioning
scheme. For example, some versioning schemes may include pre-releases
which have tags "pre1"
, "pre2"
, and so on, and these would need to
be taken into account when determining ordering. In some cases, date
ordering may be more appropriate, so the application would have to
look for date
tags in the versionTags
field and compare those.
The bottom line is, don't always assume that compare
and other Ord
operations are the right thing for every Version
.
Similarly, concrete representations of versions may differ. One
possible concrete representation is provided (see showVersion
and
parseVersion
), but depending on the application a different concrete
representation may be more appropriate.
Version | |
|
defaultMainArgs :: [String] -> IO ()Source