Newbie question on linking a static C++ library

[slippy]

Hi there,

I'm quite new to the topic FreeBASIC and I tried to link a static lib compiled with Visual C++ 2005 Express ed.

I followed all examples I could find and tried a whole bunch of stuff to get it working ... without any success.

The compiler keeps complaining about "undefined reference to ..." errors

Perhaps you can help me out a bit here?

My idea was to enable FreeBASIC to play real ATARI ST chip musaxxs with the YM2149 GPLed "StSoundLibrary" (http://leonard.oxg.free.fr) - I extended the lib to let it play a ym-chip music directly with a built-in winmm-sound server.
With C++ everything works just fine ...

Help is very much appreciated

I attached my tries here ...

Cheers,
SLiPPY

[Jim]

That should be OK - In VC++ set it to Multithreaded and turn off Link Time Code Generation.  Also turn off MFC library and make sure it's set to produce multibyte instead of unicode code.

What are the linker errors?  Are you able to post the library and a sample FB program?

I've worked with the STSound lib before, I ported it to PSP
http://members.iinet.net.au/~jimshaw/PSP/pspres.html

Jim

[Emil_halim]

slippy773.

I have encountered that problem when I want to make a static library of my OgreMagic.

First  I not sure if the linker of FreeBasic will recognize the Lib file format of VC++ so recompile it with MinGW and link to a Lib.

Also I was having an other problem , C++ is OOP and has a new function that does not exist in FreeBasic , I still did not solve it.

[slippy]

Hi Jim and Emil_halim,

first of all thanks for your fast replies ...

@Jim: I already attached my st sound lib and a quick and dirty fb test in my previous posting

Here's a log of my compile-tries:


Command executed:
"C:\Program Files\FreeBASIC\fbc.exe" "D:\freebasic_demostuff\slippy_ym2149.bas"

Compiler output:
D:\freebasic_demostuff\slippy_ym2149.o:fake:(.text+0x43): undefined reference to `playYM2149(void*, unsigned int)'
D:\freebasic_demostuff\slippy_ym2149.o:fake:(.text+0x68): undefined reference to `stopYM2149()'

Results:
Compilation failed

System:
FBIde: 0.4.6
fbc:   FreeBASIC Compiler - Version 0.17 (05-11-2007) for win32 (target:win32)
OS:    Windows NT 6.0 (build 6000)


I also tried it with the stable FB Version 0.16 ... same effects

Cheers,
SLiPPY

[Rbz]

slippy773   aboard

I have some 'experience' linking C library for FB and I will see if I can help you, I'm at work now but I'll test it tonight.

Btw, some time ago, I did an .dll to play St music for use with Blitzplus, I guess it easy to port to Freebasic...

 

[Rbz]

Here one way to play ym music using an dll, I know this isn't what you're looking for but I have included the VC++2005 source and maybe it can help you.

Download it from here ~605 kb:
http://www.rbraz.com/source/ST_Sound.zip

[Jim]

It's definitely possible to use a VC library with freebasic.  Both rbraz and I have done it with the versions of PTC we put together.  You just have to set the right options.

Jim

[slippy]

Hey dudes,

thanks for your replies and help - I'll definately investigate in this one more time ... and as soon as I get it working, I'll post my results here

Did I ever mention that your board really rocks? I've been looking a long time for such a good source of information related to demo-coding ^^

Cheers,
SLiPPY

[Jim]

Thanks for the compliment!  It's great to be able to help keen people get their demos together!  Tell your friends

Jim

[slippy]

Hi dudes,

I finally got it ... Although I didn't get the VC++ Express-Version to work with FreeBasic (something annoying with symbol names within the library produced by VC++ blocked my desperate efforts) ...

I just used DevCPP to compile my static library and with a bit tinkering I found the right settings ...

So as I promised in a previous posting I attached the working library with some examples ...

Have fun using it

Cheers ...
SLiPPY

[slippy]

Here's a little oldskoolish sample screen using the library ...

[Shockwave]

*Shockwave waves his Karma wand*

Karma Boost! ++++

Thank you for sharing that lib, it could come in very very  useful indeed.
Nice example too.

Maybe you'll be one to look out for in the next competitions?

[ninogenio]

Very nice! im shure this will be put to good use mate K+ 

[slippy]

Thanks for this dudes

I really like your board ... and @Shockwave ... let's see, if I find time when you start a new competition I'll do something

Btw. atm I'm going to wrap a library similiar to the StSound Lib which emulates the 68k CPU and thus emulates the soundchips like Paula (AMIGA) and the YM2149 (ATARI) ... so with that lib you'll be able to replay oldskoolish musaxxs like for example FutureComposer 1.3/1.4 and all the others ...

I'm talking of the SC68 emulation lib ... though it seems to be hard work anyway ... let's see if I really manage to do a wrapper for FB (or at least for C++ with Sound Server functionality)

Cheers dudes,
SLiPPY

[taj]

I'm not into this (not knowing basic :-() but thats obviously a _great_ contrib for the board so I too must add a little karma. Welcome on board dude!