[Haskell-cafe] PortAudio library successfully built on Windows

6 Dec 2009

      John Lask, 
The steps you enumerated below successfully built portaudio for me! Thank you!

I wonder though, you said to rename the dll to libpa19.dll from portaudio_x86.dll
and to change the .cabal entry from "extra-Libraries: portaudio" to "extra-Libraries: pa19".
Since my .dll name and .cabal file entry were mismatched, was that what could have been wrong all along? Was the creation of a .a file necessary?
I would delete the .a file and retry with libportaudio.dll but I won't push my luck.

Now if I could just get Gtk2hs working now, I could be happy *and* productive. :)

--- On Sat, 12/5/09, john lask  wrote:

From: john lask 
Subject: RE: [Haskell-cafe] Low Level Audio - Writing bytes to the sound card?
To: daniel.is.fischer@web.de, functionallyharmonious@yahoo.com
Cc: haskell-cafe@haskell.org
Date: Saturday, December 5, 2009, 9:03 PM

I don't know whether this will help you but I just downloaded an built
the haskell portaudio package ... (I had a windows msvc build of
portaudio dll already) the process I used ... ghc 6.10.4, portaudio-19

make an import lib for ghc from dll:
pexports libpa19.dll > libpa19.def
dlltool --input-def libpa19.def --output-lib libpa19.a

edit the .cabal file or use command line flags

  extra-Libraries: pa19
  extra-lib-dirs: c:\portaudio19\lib
  include-dirs:   c:\portaudio19\include

 runghc setup configure

make sure you have cpp i.e. the c-preprocessor on your exe path,
otherwise you will get
'cpp' is not recognized as an internal or external command,
operable program or batch file.
c2hs.exe: Error during preprocessing custom header file

runghc setup build

builds ok ...??
...
From: daniel.is.fischer@web.de
To: functionallyharmonious@yahoo.com
Subject: Re: [Haskell-cafe] Low Level Audio - Writing bytes to the sound card?
Date: Sun, 6 Dec 2009 02:34:17 +0100
CC: haskell-cafe@haskell.org
Am Sonntag 06 Dezember 2009 01:49:49 schrieb M Xyz:
I just had another idea.
dafis@linux-mkk1:~> c2hs -o memyself.hs memyself.chs
c2hs: does not exist
it's not that c2hs isn't found or something, c2hs doesn't find Base.chs!
Try installing from the unpacked sources (cd portaudio; cabal install) or the old-
fashioned way:
cd portaudio-0.0.1
ghc --make Setup
./Setup configure --help
(choose your options, prefix, profiling, ...)
./Setup configure $OPTIONS
./Setup build
if all's well,
./Setup haddock
./Setup install
(dies for me with
dist/build/Sound/PortAudio/Base.chs.h:1:23: error: portaudio.h: Datei oder 
Verzeichnisnicht gefunden
c2hs: Error during preprocessing custom header file
cabal: Error: some packages failed to install:
portaudio-0.0.1 failed during the building phase. The exception was:
exit: ExitFailure 1
because I don't have portaudio installed)
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