On 22 November 2005 17:18, Michael Marte wrote:
I am having some annoying problems with the 6.x compilers:
6.4 and 6.4.1: When repeating a build (with ghc --make) all modules are rebuild even if nothing has changed. With earlier compilers, only linking takes place in this setting. Can I change this behaviour? I cannot develop this way.
Should not happen, if it does there is a bug. Can you tell us how to repeat the behaviour you're seeing? We aren't seeing any unecessary recompilation here.
6.2 and up: The object file is named after the module, not after the source file as in 5.04. As there are several main modules in my project, each in its own source file, all I get is a big mess. Any suggestions?
The object file is named after the source file, unless you use -odir. The behaviour is clearly specified in the user's guide: http://www.haskell.org/ghc/docs/latest/html/users_guide/separate-compila tion.html#output-files the behaviour has been through several revisions before we arrived at this, and I'm not keen to change it. You can have several Main modules in the same directory if you don't use -odir. If you do use -odir, then you need to use a different value for -odir for each different program. Alternatively use -main-is, as Bulat suggested (actually this is better, IMO). Cheers, Simon
6.4 and 6.4.1: When repeating a build (with ghc --make) all modules are rebuild even if nothing has changed. With earlier compilers, only linking takes place in this setting. Can I change this behaviour? I cannot develop this way.
Should not happen, if it does there is a bug. Can you tell us how to repeat the behaviour you're seeing? We aren't seeing any unecessary recompilation here.
I think I had that effect exactly when using -ddump-minimal-imports Wolfram
Simon, On Wed, 23 Nov 2005, Simon Marlow wrote:
On 22 November 2005 17:18, Michael Marte wrote:
I am having some annoying problems with the 6.x compilers:
6.4 and 6.4.1: When repeating a build (with ghc --make) all modules are rebuild even if nothing has changed. With earlier compilers, only linking takes place in this setting. Can I change this behaviour? I cannot develop this way.
Should not happen, if it does there is a bug. Can you tell us how to repeat the behaviour you're seeing? We aren't seeing any unecessary recompilation here.
Like Wolfram Kahl, I am using -ddump-minimal-imports. I cannot check whether the use of this option causes the problem, because I returned to 6.2 already to continue porting my project from ghc 5.
6.2 and up: The object file is named after the module, not after the source file as in 5.04. As there are several main modules in my project, each in its own source file, all I get is a big mess. Any suggestions?
The object file is named after the source file, unless you use -odir. The behaviour is clearly specified in the user's guide:
http://www.haskell.org/ghc/docs/latest/html/users_guide/separate-compila tion.html#output-files
the behaviour has been through several revisions before we arrived at this, and I'm not keen to change it.
You can have several Main modules in the same directory if you don't use -odir. If you do use -odir, then you need to use a different value for -odir for each different program. Alternatively use -main-is, as Bulat suggested (actually this is better, IMO).
I followed the suggestion of Bulat: I renamed the modules and used -main-is. Thanks everybody! Michael
participants (3)
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kahl＠cas.mcmaster.ca -
Michael Marte -
Simon Marlow