Can't find unit openal used by wavopenal

[Clover]

I'm trying to use OpenAL in my program

I can successfully compile a test program I downloaded called wavopenal in Lazarus under Windows but when I try to compile it under OSX I get "Fatal: Can't find unit openal used by wavopenal"

I see that the file openal.pas is present, in /usr/local/share/fpcsrc/packages/openal/src

My OSX Lazarus 0.9.29 environment has fpc source directory set to /usr/local/share/fpcsrc and my other test programs without openal build fine. fpc is version 2.4.0 svn 26980

I'm obviously missing something here, can someone point me in the right direction? Thanks.

[Phil]

I don't believe openal is normally a compiled unit with 2.4.0. If you look at the source you can see why: it tries to link against a library, yet openal has been a standard Mac framework since Tiger (2004). The openal in FPC 2.5.1 now links correctly against the framework.

You could try 2.4.2rc1 and see if it's been fixed there too.

Thanks.

-Phil

[Phil]

You could also copy your 2.4.0 openal.pas (and its 3 .inc files) to your app's folder and change the conditionals at the top to be like the 2.5.1 openal.pas:

{$IFDEF WINDOWS}
  {$DEFINE DYNLINK}
{$ENDIF}

{$IF Defined(DYNLINK)}
const
{$IF Defined(WINDOWS)}
  openallib = 'openal32.dll';
{$ELSEIF Defined(UNIX)}
  openallib = 'libopenal.so';
{$ELSE}
  {$MESSAGE ERROR 'DYNLINK not supported'}
{$IFEND}
{$ELSEIF Defined(Darwin)}
{$linkframework OpenAL}
{$ELSE}
  {$LINKLIB openal}
{$ENDIF}

[Clover]

Many thanks Phil

Copying it to my app's folder and changing the header for Darwin worked a treat.

I'm curious why the IDE couldn't find the original source, though.

[felipemdc]

I'm curious why the IDE couldn't find the original source, though.

Lazarus never attempts to rebuild FPC packages and OpenAL is only built for darwin-x86 in FPC 2.5.1+