From: colin AT bird DOT fu DOT is DOT saga-u DOT ac DOT jp (Colin Peters)
Subject: RE: Sound, NetConnection & GL not ready?
28 Feb 1997 12:08:30 -0800
Approved: cygnus DOT gnu-win32 AT cygnus DOT com
Distribution: cygnus
Message-ID: <01BC2583.A4C13440.cygnus.gnu-win32@gbird0>
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Original-To: "'Chin Chee-Kai'" <cheekai AT gen DOT co DOT jp>
Original-Cc: "'GNU-Win32'" <gnu-win32 AT cygnus DOT com>
Original-Sender: owner-gnu-win32 AT cygnus DOT com

Chin Chee-Kai[SMTP:cheekai AT gen DOT co DOT jp] wrote:
>Also, when I've compiled a project using libglaux.a 
>(and probably libglu32.a;  I'm not quite sure), I got the
>messages (displayed as an error dialog on Win95):
>-------------------------------------------------------------
>A required DLL GLAUX.DLL was not found?????
>A required DLL OPENGL32.DLL was not found?????
>-------------------------------------------------------------

OpenGL did not ship with Windows 95, so this was probably a
system that did not have the OpenGL upgrade installed (you
can download it from Microsoft if I remember correctly).

>Subject: Functions not present in libs
>/2.c:2646: undefined reference to `OpenSound AT 0'
>/2.c:2655: undefined reference to `CloseSound AT 0'
>/2.c:2664: undefined reference to `StartSound AT 0'
>/2.c:2673: undefined reference to `StopSound AT 0'
>/2.c:2686: undefined reference to `WaitSoundState AT 4'
>/2.c:2697: undefined reference to `SyncAllVoices AT 0'
>/2.c:2710: undefined reference to `CountVoiceNotes AT 4'
>/2.c:2734: undefined reference to `GetThresholdStatus AT 0'
>/2.c:2747: undefined reference to `SetSoundNoise AT 8'
>/2.c:2761: undefined reference to `SetVoiceAccent AT 20'
>/2.c:2775: undefined reference to `SetVoiceEnvelope AT 12'
>/2.c:2788: undefined reference to `SetVoiceNote AT 16'
>/2.c:2802: undefined reference to `SetVoiceQueueSize AT 8'
>/2.c:2815: undefined reference to `SetVoiceSound AT 12'
>/2.c:2828: undefined reference to `SetVoiceThreshold AT 8'

The above functions are all related to the obsolete
multimedia interface of Windows 2.0 (and possibly 3.0).
Even in the Windows 3.1 SDK documentation they are listed
as obsolete, and in Win32 they are deleted. Use the Win32
multimedia functions instead (e.g. PlaySound).

>/4.c:2156: undefined reference to `AbortDoc'
>/4.c:2182: undefined reference to `AbortPath'

Interestingly these are new with Win32. They should be defined
in libgdi32.a. However, it looks like they are not prototyped
with __stdcall__ (or WINAPI or STDCALL) because they should be
AbortDoc AT 4 and AbortPath AT 4. This appears to be a bug in the
headers (Windows32/Functions.h line 856 to 857, the prototypes
should be preceded with the STDCALL keyword, some of the
surrounding prototypes also look suspicious too).

>/4.c:5916: undefined reference to `WNetConnectionDialog AT 8'
>/4.c:5929: undefined reference to `WNetDisconnectDialog AT 8'
>/4.c:5942: undefined reference to `WNetCloseEnum AT 4'

These should be defined in libmpr.a.

>/4.c:6176: undefined reference to `wglCreateLayerContext AT 8'
>/4.c:6189: undefined reference to `wglCopyContext AT 12'
>/4.c:6289: undefined reference to `wglRealizeLayerPalette AT 12'
>/4.c:6328: undefined reference to `wglSwapLayerBuffers AT 8'

I can't find any mention of these functions in the .def files
that I have (but they are in the header files). This is probably
because I only have the .def files from the win32-api.0.1.2
package and haven't looked at the ones from the full source
distribution from Cygnus. A simple grep on those source .def
files should tell you what library you need to link in.

Colin.

-- Colin Peters - colin AT bird DOT fu DOT is DOT saga-u DOT ac DOT jp
-- Saga University Dept. of Information Science
-- http://www.fu.is.saga-u.ac.jp/~colin/index.html
-- http://www.geocities.com/Tokyo/Towers/6162/

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