Noob Objective-C/C++ - Linker Problem/Method Signature Problem
- by Josh
There is a static class Pipe, defined in C++ header that I'm including.
The static method I'm interested in calling (from Objetive-c) is here:
static ERC SendUserGet(const UserId &_idUser,const GUID &_idStyle,const ZoneId &_idZone,const char *_pszMsg);
I have access to an objetive-c data structure that appears to store a copy of userID, and zoneID -- it looks like:
@interface DataBlock : NSObject
{
GUID userID;
GUID zoneID;
}
Looked up the GUID def, and its a struct with a bunch of overloaded operators for equality. UserId and ZoneId from the first function signature are #typedef GUID
Now when I try to call the method, no matter how I cast it (const UserId), (UserId), etc, I get the following linker error:
Ld build/Debug/Seeker.app/Contents/MacOS/Seeker normal i386
cd /Users/josh/Development/project/Mac/Seeker
setenv MACOSX_DEPLOYMENT_TARGET 10.5
/Developer/usr/bin/g++-4.2 -arch i386 -isysroot /Developer/SDKs/MacOSX10.5.sdk -L/Users/josh/Development/TS/Mac/Seeker/build/Debug -L/Users/josh/Development/TS/Mac/Seeker/../../../debug -L/Developer/Platforms/iPhoneOS.platform/Developer/usr/lib/gcc/i686-apple-darwin10/4.2.1 -F/Users/josh/Development/TS/Mac/Seeker/build/Debug -filelist /Users/josh/Development/TS/Mac/Seeker/build/Seeker.build/Debug/Seeker.build/Objects-normal/i386/Seeker.LinkFileList -mmacosx-version-min=10.5 -framework Cocoa -framework WebKit -lSAPI -lSPL -o /Users/josh/Development/TS/Mac/Seeker/build/Debug/Seeker.app/Contents/MacOS/Seeker
Undefined symbols:
"SocPipe::SendUserGet(_GUID const&, _GUID const&, _GUID const&, char const*)", referenced from:
-[PeoplePaneController clickGet:] in PeoplePaneController.o
ld: symbol(s) not found
collect2: ld returned 1 exit status
Is this a type/function signature error, or truly some sort of linker error? I have the headers where all these types and static classes are defined #imported -- I tried #include too, just in case, since I'm already stumbling :P
Forgive me, I come from a web tech background, so this c-style memory management and immutability stuff is super hazy.
Edit: Added full linker error text. Changed "function" to "method"
Thanks,
Josh
