Check that you are only doing ONE of the following:
1. Use "-luuid", which you are using
2. #include <initguid.h> or #define INITGUID (which is what it does) before including the relevant COM headers
Never both, or you'll get those multiple definitions.

Damjan

On Fri, May 3, 2013 at 11:31 AM, Daniel Jeliński <djelinski1@gmail.com> wrote:

Additional info:

after my patches amstream fails to link complaining about duplicate IID_IResourceManager:
~/wine-git/dlls/amstream$ make
../../tools/winegcc/winegcc -m32 -B../../tools/winebuild --sysroot=../.. -fasynchronous-unwind-tables -shared ./amstream.spec amstream.o audiodata.o main.o mediastream.o mediastreamfilter.o     amstream_classes_r.res  version.res    -o amstream.dll.so  -lstrmiids -lstrmbase -luuid -lole32 -ladvapi32  ../../libs/port/libwine_port.a  
../../dlls/uuid/libuuid.a(uuid.o):(.rodata+0x540): multiple definition of `IID_IResourceManager'
../../dlls/strmiids/libstrmiids.a(strmiids.o):(.rodata+0x5e0): first defined here
winebuild: /usr/bin/ld failed with status 1
winegcc: ../../tools/winebuild/winebuild failed

if I don't add the DTC headers to uuid, linking xolehlp fails:
~/wine-git/dlls/xolehlp$ make
../../tools/winegcc/winegcc -m32 -B../../tools/winebuild --sysroot=../.. -fasynchronous-unwind-tables -shared ./xolehlp.spec xolehlp.o           -o xolehlp.dll.so  -luuid  ../../libs/port/libwine_port.a                                                                                                                                     
xolehlp.o: In function `TransactionDispenser_QueryInterface':
/home/daniel/wine-git/dlls/xolehlp/xolehlp.c:170: undefined reference to `IID_ITransactionDispenser'
/usr/bin/ld: xolehlp.o: relocation R_386_GOTOFF against undefined hidden symbol `IID_ITransactionDispenser' can not be used when making a shared object
/usr/bin/ld: final link failed: Bad value

How do I know which dll should export these IIDs?

2013/5/2 Daniel Jeliński <djelinski1@gmail.com>

Hello,

I just tried compiling all of Wine with my patch series applied and, to my surprise, compilation failed. The reason was that IID_IResourceManager was already declared elsewhere.

Now, according to this page:
http://mikolajapp.appspot.com/uuid/query?q={56a868ac-0ad4-11ce-b03a-0020af0ba770}

Wine's strmif.h declares IID_IResourceManager, while SDK declares __declspec(uuid) as IResourceManager.

SDK declares IID_IResourceManager elsewhere:
http://mikolajapp.appspot.com/uuid/query?q={03741d21-87eb-11ce-8081-0080c758527e}
I'm new to COM, so I'm not sure what exactly is the difference between IID and declspec(uuid). Could anyone explain or suggest a fix?

Thanks,

Daniel