recommended build system

[Frederik Eaton-3]

Hi all,

I'm looking for a build system for my projects which will correctly
handle all of ghc's dependencies. I.e. every time I ask it to rebuild
an output file, it will only do the minimum amount of compilation
necessary. This is important to me because "ghc --make" and cabal
currently (AFAICT) will always relink an executable even when it is
not necessary to do so; thus if I have a project with a bunch of
libraries and executables, the cost of making a small modification and
recompiling is very high, and it becomes hard to maintain focus on my
projects after the initial design phase. I've just been playing around
with GNU coreutils and was impressed with how well the build system
works, and how fast the recompilation goes.

Anyway, the system that darcs uses seems to work pretty well, should I
copy that, or do people recommend other alternatives?

Frederik
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[Malcolm Wallace]

Frederik Eaton <[hidden email]> writes:

> I'm looking for a build system for my projects which will correctly
> handle all of ghc's dependencies. I.e. every time I ask it to rebuild
> an output file, it will only do the minimum amount of compilation
> necessary.

'hmake' is pretty good at what you want.
    http://haskell.org/hmake

Regards,
    Malcolm
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[Simon Peyton-Jones]

Simon fixed this recently.  The GHC HEAD build will not re-link with
--make if none of the object files have changed.

Simon

| -----Original Message-----
| From: [hidden email]
[mailto:glasgow-haskell-users-
| [hidden email]] On Behalf Of Frederik Eaton
| Sent: 04 December 2005 00:46
| To: [hidden email]
| Subject: recommended build system
|
| Hi all,
|
| I'm looking for a build system for my projects which will correctly
| handle all of ghc's dependencies. I.e. every time I ask it to rebuild
| an output file, it will only do the minimum amount of compilation
| necessary. This is important to me because "ghc --make" and cabal
| currently (AFAICT) will always relink an executable even when it is
| not necessary to do so; thus if I have a project with a bunch of
| libraries and executables, the cost of making a small modification and
| recompiling is very high, and it becomes hard to maintain focus on my
| projects after the initial design phase. I've just been playing around
| with GNU coreutils and was impressed with how well the build system
| works, and how fast the recompilation goes.
|
| Anyway, the system that darcs uses seems to work pretty well, should I
| copy that, or do people recommend other alternatives?
|
| Frederik
| _______________________________________________
| Glasgow-haskell-users mailing list
| [hidden email]
| http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
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[Frederik Eaton-3]

Go figure...

I suppose that fixes Cabal too, now.

Thanks,

Frederik

On Mon, Dec 05, 2005 at 10:51:19AM -0000, Simon Peyton-Jones wrote:
> Simon fixed this recently.  The GHC HEAD build will not re-link with
> --make if none of the object files have changed.
>
> Simon
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[Frederik Eaton-3]

Does this depend on a certain version of gcc?

$ ghc -M --make Matrix.hs -o matrix                                        
Chasing modules from: Matrix.hs
[1 of 2] Compiling Fu.Prepose       ( Fu/Prepose.hs, Fu/Prepose.o )
ghc-6.5.20051207: could not execute: gcc-3.4.3

I'm wondering why it is trying to execute something which isn't in my
path...

Frederik

On Mon, Dec 05, 2005 at 10:51:19AM -0000, Simon Peyton-Jones wrote:

> Simon fixed this recently.  The GHC HEAD build will not re-link with
> --make if none of the object files have changed.
>
> Simon
>
> | -----Original Message-----
> | From: [hidden email]
> [mailto:glasgow-haskell-users-
> | [hidden email]] On Behalf Of Frederik Eaton
> | Sent: 04 December 2005 00:46
> | To: [hidden email]
> | Subject: recommended build system
> |
> | Hi all,
> |
> | I'm looking for a build system for my projects which will correctly
> | handle all of ghc's dependencies. I.e. every time I ask it to rebuild
> | an output file, it will only do the minimum amount of compilation
> | necessary. This is important to me because "ghc --make" and cabal
> | currently (AFAICT) will always relink an executable even when it is
> | not necessary to do so; thus if I have a project with a bunch of
> | libraries and executables, the cost of making a small modification and
> | recompiling is very high, and it becomes hard to maintain focus on my
> | projects after the initial design phase. I've just been playing around
> | with GNU coreutils and was impressed with how well the build system
> | works, and how fast the recompilation goes.
> |
> | Anyway, the system that darcs uses seems to work pretty well, should I
> | copy that, or do people recommend other alternatives?
> |
> | Frederik
> | _______________________________________________
> | Glasgow-haskell-users mailing list
> | [hidden email]
> | http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
> _______________________________________________
> Glasgow-haskell-users mailing list
> [hidden email]
> http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
>

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[Simon Marlow]

The nightly binary snapshots for x86/Linux are currently hard-wired to
use gcc-3.4.3, because I occasionally change gcc versions to make sure
things are still working.  I'll change it back to gcc.  To workaround it
you can add '-pgmc gcc' to the command line.

Cheers,
        Simon

On 09 December 2005 03:26, Frederik Eaton wrote:

> Does this depend on a certain version of gcc?
>
> $ ghc -M --make Matrix.hs -o matrix
> Chasing modules from: Matrix.hs
> [1 of 2] Compiling Fu.Prepose       ( Fu/Prepose.hs, Fu/Prepose.o )
> ghc-6.5.20051207: could not execute: gcc-3.4.3
>
> I'm wondering why it is trying to execute something which isn't in my
> path...
>
> Frederik
>
> On Mon, Dec 05, 2005 at 10:51:19AM -0000, Simon Peyton-Jones wrote:
>> Simon fixed this recently.  The GHC HEAD build will not re-link with
>> --make if none of the object files have changed.
>>
>> Simon
>>
>>> -----Original Message-----
>>> From: [hidden email]
>>> [mailto:glasgow-haskell-users- [hidden email]] On Behalf Of
>>> Frederik Eaton
>>> Sent: 04 December 2005 00:46
>>> To: [hidden email]
>>> Subject: recommended build system
>>>
>>> Hi all,
>>>
>>> I'm looking for a build system for my projects which will correctly
>>> handle all of ghc's dependencies. I.e. every time I ask it to
>>> rebuild an output file, it will only do the minimum amount of
>>> compilation necessary. This is important to me because "ghc --make"
>>> and cabal currently (AFAICT) will always relink an executable even
>>> when it is not necessary to do so; thus if I have a project with a
>>> bunch of libraries and executables, the cost of making a small
>>> modification and recompiling is very high, and it becomes hard to
>>> maintain focus on my projects after the initial design phase. I've
>>> just been playing around with GNU coreutils and was impressed with
>>> how well the build system works, and how fast the recompilation
>>> goes.
>>>
>>> Anyway, the system that darcs uses seems to work pretty well,
>>> should I copy that, or do people recommend other alternatives?
>>>
>>> Frederik
>>> _______________________________________________
>>> Glasgow-haskell-users mailing list
>>> [hidden email]
>>> http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
>> _______________________________________________
>> Glasgow-haskell-users mailing list
>> [hidden email]
>> http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
>>
> _______________________________________________
> Glasgow-haskell-users mailing list
> [hidden email]
> http://www.haskell.org/mailman/listinfo/glasgow-haskell-users

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[Frederik Eaton-3]

Would I be the only user of the nightly binary snapshots?

Frederik

On Fri, Dec 09, 2005 at 09:23:16AM -0000, Simon Marlow wrote:

> The nightly binary snapshots for x86/Linux are currently hard-wired to
> use gcc-3.4.3, because I occasionally change gcc versions to make sure
> things are still working.  I'll change it back to gcc.  To workaround it
> you can add '-pgmc gcc' to the command line.
>
> Cheers,
> Simon
>
> On 09 December 2005 03:26, Frederik Eaton wrote:
>
> > Does this depend on a certain version of gcc?
> >
> > $ ghc -M --make Matrix.hs -o matrix
> > Chasing modules from: Matrix.hs
> > [1 of 2] Compiling Fu.Prepose       ( Fu/Prepose.hs, Fu/Prepose.o )
> > ghc-6.5.20051207: could not execute: gcc-3.4.3
> >
> > I'm wondering why it is trying to execute something which isn't in my
> > path...
> >
> > Frederik
> >
> > On Mon, Dec 05, 2005 at 10:51:19AM -0000, Simon Peyton-Jones wrote:
> >> Simon fixed this recently.  The GHC HEAD build will not re-link with
> >> --make if none of the object files have changed.
> >>
> >> Simon
> >>
> >>> -----Original Message-----
> >>> From: [hidden email]
> >>> [mailto:glasgow-haskell-users- [hidden email]] On Behalf Of
> >>> Frederik Eaton
> >>> Sent: 04 December 2005 00:46
> >>> To: [hidden email]
> >>> Subject: recommended build system
> >>>
> >>> Hi all,
> >>>
> >>> I'm looking for a build system for my projects which will correctly
> >>> handle all of ghc's dependencies. I.e. every time I ask it to
> >>> rebuild an output file, it will only do the minimum amount of
> >>> compilation necessary. This is important to me because "ghc --make"
> >>> and cabal currently (AFAICT) will always relink an executable even
> >>> when it is not necessary to do so; thus if I have a project with a
> >>> bunch of libraries and executables, the cost of making a small
> >>> modification and recompiling is very high, and it becomes hard to
> >>> maintain focus on my projects after the initial design phase. I've
> >>> just been playing around with GNU coreutils and was impressed with
> >>> how well the build system works, and how fast the recompilation
> >>> goes.
> >>>
> >>> Anyway, the system that darcs uses seems to work pretty well,
> >>> should I copy that, or do people recommend other alternatives?
> >>>
> >>> Frederik
> >>> _______________________________________________
> >>> Glasgow-haskell-users mailing list
> >>> [hidden email]
> >>> http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
> >> _______________________________________________
> >> Glasgow-haskell-users mailing list
> >> [hidden email]
> >> http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
> >>
> > _______________________________________________
> > Glasgow-haskell-users mailing list
> > [hidden email]
> > http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
>

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[Simon Marlow]

This doesn't affect the source snapshots, only the Linux/x86 binaries.
I think there are more people using the sources and the Linux/x86_64
binaries.

Cheers,
        Simon

On 09 December 2005 10:26, Frederik Eaton wrote:

> Would I be the only user of the nightly binary snapshots?
>
> Frederik
>
> On Fri, Dec 09, 2005 at 09:23:16AM -0000, Simon Marlow wrote:
>> The nightly binary snapshots for x86/Linux are currently hard-wired
>> to use gcc-3.4.3, because I occasionally change gcc versions to make
>> sure things are still working.  I'll change it back to gcc.  To
>> workaround it you can add '-pgmc gcc' to the command line.
>>
>> Cheers,
>> Simon
>>
>> On 09 December 2005 03:26, Frederik Eaton wrote:
>>
>>> Does this depend on a certain version of gcc?
>>>
>>> $ ghc -M --make Matrix.hs -o matrix
>>> Chasing modules from: Matrix.hs
>>> [1 of 2] Compiling Fu.Prepose       ( Fu/Prepose.hs, Fu/Prepose.o )
>>> ghc-6.5.20051207: could not execute: gcc-3.4.3
>>>
>>> I'm wondering why it is trying to execute something which isn't in
>>> my path...
>>>
>>> Frederik
>>>
>>> On Mon, Dec 05, 2005 at 10:51:19AM -0000, Simon Peyton-Jones wrote:
>>>> Simon fixed this recently.  The GHC HEAD build will not re-link
>>>> with --make if none of the object files have changed.
>>>>
>>>> Simon
>>>>
>>>>> -----Original Message-----
>>>>> From: [hidden email]
>>>>> [mailto:glasgow-haskell-users- [hidden email]] On Behalf Of
>>>>> Frederik Eaton Sent: 04 December 2005 00:46
>>>>> To: [hidden email]
>>>>> Subject: recommended build system
>>>>>
>>>>> Hi all,
>>>>>
>>>>> I'm looking for a build system for my projects which will
>>>>> correctly handle all of ghc's dependencies. I.e. every time I ask
>>>>> it to rebuild an output file, it will only do the minimum amount
>>>>> of compilation necessary. This is important to me because "ghc
>>>>> --make" and cabal currently (AFAICT) will always relink an
>>>>> executable even when it is not necessary to do so; thus if I have
>>>>> a project with a bunch of libraries and executables, the cost of
>>>>> making a small modification and recompiling is very high, and it
>>>>> becomes hard to maintain focus on my projects after the initial
>>>>> design phase. I've just been playing around with GNU coreutils
>>>>> and was impressed with how well the build system works, and how
>>>>> fast the recompilation goes.
>>>>>
>>>>> Anyway, the system that darcs uses seems to work pretty well,
>>>>> should I copy that, or do people recommend other alternatives?
>>>>>
>>>>> Frederik
>>>>> _______________________________________________
>>>>> Glasgow-haskell-users mailing list
>>>>> [hidden email]
>>>>> http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
>>>> _______________________________________________
>>>> Glasgow-haskell-users mailing list
>>>> [hidden email]
>>>> http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
>>>>
>>> _______________________________________________
>>> Glasgow-haskell-users mailing list
>>> [hidden email]
>>> http://www.haskell.org/mailman/listinfo/glasgow-haskell-users

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[Frederik Eaton-3]

$ ghc -pgmc gcc --make Matrix.hs -o matrix  
Chasing modules from: Matrix.hs
[1 of 2] Compiling Fu.Prepose       ( Fu/Prepose.hs, Fu/Prepose.o )
ghc-6.5.20051208: could not execute: gcc-3.4.3

Hard-coding things is ... not ... nice ...

Frederik

On Fri, Dec 09, 2005 at 09:23:16AM -0000, Simon Marlow wrote:

> The nightly binary snapshots for x86/Linux are currently hard-wired to
> use gcc-3.4.3, because I occasionally change gcc versions to make sure
> things are still working.  I'll change it back to gcc.  To workaround it
> you can add '-pgmc gcc' to the command line.
>
> Cheers,
> Simon
>
> On 09 December 2005 03:26, Frederik Eaton wrote:
>
> > Does this depend on a certain version of gcc?
> >
> > $ ghc -M --make Matrix.hs -o matrix
> > Chasing modules from: Matrix.hs
> > [1 of 2] Compiling Fu.Prepose       ( Fu/Prepose.hs, Fu/Prepose.o )
> > ghc-6.5.20051207: could not execute: gcc-3.4.3
> >
> > I'm wondering why it is trying to execute something which isn't in my
> > path...
> >
> > Frederik
> >
> > On Mon, Dec 05, 2005 at 10:51:19AM -0000, Simon Peyton-Jones wrote:
> >> Simon fixed this recently.  The GHC HEAD build will not re-link with
> >> --make if none of the object files have changed.
> >>
> >> Simon
> >>
> >>> -----Original Message-----
> >>> From: [hidden email]
> >>> [mailto:glasgow-haskell-users- [hidden email]] On Behalf Of
> >>> Frederik Eaton
> >>> Sent: 04 December 2005 00:46
> >>> To: [hidden email]
> >>> Subject: recommended build system
> >>>
> >>> Hi all,
> >>>
> >>> I'm looking for a build system for my projects which will correctly
> >>> handle all of ghc's dependencies. I.e. every time I ask it to
> >>> rebuild an output file, it will only do the minimum amount of
> >>> compilation necessary. This is important to me because "ghc --make"
> >>> and cabal currently (AFAICT) will always relink an executable even
> >>> when it is not necessary to do so; thus if I have a project with a
> >>> bunch of libraries and executables, the cost of making a small
> >>> modification and recompiling is very high, and it becomes hard to
> >>> maintain focus on my projects after the initial design phase. I've
> >>> just been playing around with GNU coreutils and was impressed with
> >>> how well the build system works, and how fast the recompilation
> >>> goes.
> >>>
> >>> Anyway, the system that darcs uses seems to work pretty well,
> >>> should I copy that, or do people recommend other alternatives?
> >>>
> >>> Frederik
> >>> _______________________________________________
> >>> Glasgow-haskell-users mailing list
> >>> [hidden email]
> >>> http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
> >> _______________________________________________
> >> Glasgow-haskell-users mailing list
> >> [hidden email]
> >> http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
> >>
> > _______________________________________________
> > Glasgow-haskell-users mailing list
> > [hidden email]
> > http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
>

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[Simon Marlow]

On 10 December 2005 05:08, Frederik Eaton wrote:

> $ ghc -pgmc gcc --make Matrix.hs -o matrix
> Chasing modules from: Matrix.hs
> [1 of 2] Compiling Fu.Prepose       ( Fu/Prepose.hs, Fu/Prepose.o )
> ghc-6.5.20051208: could not execute: gcc-3.4.3
>
> Hard-coding things is ... not ... nice ...

You also need -pgml gcc, and probably -pgmP "gcc -E -undef
-traditional".

Cheers,
        Simon
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[Frederik Eaton-3]

$ ghc -pgml gcc -pgmP "gcc -E -undef -traditional" -pgmc gcc --make Matrix.hs -o matrix
Chasing modules from: Matrix.hs
[1 of 2] Compiling Fu.Prepose       ( Fu/Prepose.hs, Fu/Prepose.o )
ghc-6.5.20051208: could not execute: gcc-3.4.3

Maybe a more informative error message would be a useful feature as
well.

Frederik

On Mon, Dec 12, 2005 at 02:28:34PM -0000, Simon Marlow wrote:

> On 10 December 2005 05:08, Frederik Eaton wrote:
>
> > $ ghc -pgmc gcc --make Matrix.hs -o matrix
> > Chasing modules from: Matrix.hs
> > [1 of 2] Compiling Fu.Prepose       ( Fu/Prepose.hs, Fu/Prepose.o )
> > ghc-6.5.20051208: could not execute: gcc-3.4.3
> >
> > Hard-coding things is ... not ... nice ...
>
> You also need -pgml gcc, and probably -pgmP "gcc -E -undef
> -traditional".
>
> Cheers,
> Simon
>

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[Simon Marlow]

On 12 December 2005 18:49, Frederik Eaton wrote:

> $ ghc -pgml gcc -pgmP "gcc -E -undef -traditional" -pgmc gcc --make
> Matrix.hs -o matrix Chasing modules from: Matrix.hs
> [1 of 2] Compiling Fu.Prepose       ( Fu/Prepose.hs, Fu/Prepose.o )
> ghc-6.5.20051208: could not execute: gcc-3.4.3
>
> Maybe a more informative error message would be a useful feature as
> well.

Sorry, also add -pgma gcc.  (or wait for tonight's build, which won't
have gcc-3.4.3 hardwired).

If it still complains, send us the -v output.

Cheers,
        Simon

> Frederik
>
> On Mon, Dec 12, 2005 at 02:28:34PM -0000, Simon Marlow wrote:
>> On 10 December 2005 05:08, Frederik Eaton wrote:
>>
>>> $ ghc -pgmc gcc --make Matrix.hs -o matrix
>>> Chasing modules from: Matrix.hs
>>> [1 of 2] Compiling Fu.Prepose       ( Fu/Prepose.hs, Fu/Prepose.o )
>>> ghc-6.5.20051208: could not execute: gcc-3.4.3
>>>
>>> Hard-coding things is ... not ... nice ...
>>
>> You also need -pgml gcc, and probably -pgmP "gcc -E -undef
>> -traditional".
>>
>> Cheers,
>> Simon

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[Frederik Eaton-3]

That made it work, thanks.

Frederik

On Mon, Dec 12, 2005 at 07:01:42PM -0000, Simon Marlow wrote:

> On 12 December 2005 18:49, Frederik Eaton wrote:
>
> > $ ghc -pgml gcc -pgmP "gcc -E -undef -traditional" -pgmc gcc --make
> > Matrix.hs -o matrix Chasing modules from: Matrix.hs
> > [1 of 2] Compiling Fu.Prepose       ( Fu/Prepose.hs, Fu/Prepose.o )
> > ghc-6.5.20051208: could not execute: gcc-3.4.3
> >
> > Maybe a more informative error message would be a useful feature as
> > well.
>
> Sorry, also add -pgma gcc.  (or wait for tonight's build, which won't
> have gcc-3.4.3 hardwired).
>
> If it still complains, send us the -v output.
>
> Cheers,
> Simon
>
> > Frederik
> >
> > On Mon, Dec 12, 2005 at 02:28:34PM -0000, Simon Marlow wrote:
> >> On 10 December 2005 05:08, Frederik Eaton wrote:
> >>
> >>> $ ghc -pgmc gcc --make Matrix.hs -o matrix
> >>> Chasing modules from: Matrix.hs
> >>> [1 of 2] Compiling Fu.Prepose       ( Fu/Prepose.hs, Fu/Prepose.o )
> >>> ghc-6.5.20051208: could not execute: gcc-3.4.3
> >>>
> >>> Hard-coding things is ... not ... nice ...
> >>
> >> You also need -pgml gcc, and probably -pgmP "gcc -E -undef
> >> -traditional".
> >>
> >> Cheers,
> >> Simon
>

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