Building SwigDLL on Mac OS X?

[jeremieweldin]

I'm trying to build the C# wrappers on Mac OS X.

This is what I get:
`Jeremies-MacBook-Air:~ jeremieweldin$ cd Projects/RakNet/DependentExtensions/Swig/
Jeremies-MacBook-Air:Swig jeremieweldin$ ./MakeSwig.sh /Users/jeremieweldin/Projects/RakNet/Source/
Performing Swig build
without SQLiteClientLogger
/Users/jeremieweldin/Projects/RakNet/Source/RakNetDefines.h:28: Warning 305: Bad constant value (ignored).
/Users/jeremieweldin/Projects/RakNet/Source/RakPeer.h:57: Warning 401: Nothing known about base class 'RNS2EventHandler'. Ignored.
/Users/jeremieweldin/Projects/RakNet/Source/NatTypeDetectionClient.h:45: Warning 401: Nothing known about base class 'RNS2EventHandler'. Ignored.
/Users/jeremieweldin/Projects/RakNet/Source/NatTypeDetectionServer.h:55: Warning 401: Nothing known about base class 'RNS2EventHandler'. Ignored.
/Users/jeremieweldin/Projects/RakNet/Source/RakWString.h:40: Warning 503: Can't wrap 'operator wchar_t_' unless renamed to a valid identifier.
Swig build complete
Removing and replacing the sample cs files with fresh ones
mv: rename ./SwigLinuxCSharpSample/TestMain.cs to ./SwigLinuxCSharpSample/TestMain.txt: No such file or directory
rm: ./SwigLinuxCSharpSample/_.cs: No such file or directory
mv: rename ./SwigLinuxCSharpSample/TestMain.txt to ./SwigLinuxCSharpSample/TestMain.cs: No such file or directory
usage: cp [-R [-H | -L | -P]] [-fi | -n] [-apvX] source_file target_file
cp [-R [-H | -L | -P]] [-fi | -n] [-apvX] source_file ... target_directory
Building the Swig Dynamic Link
Building without SQLiteClientLogger
DirectoryDeltaTransfer.cpp:45:21: warning: address of array
'onFileStruct->fileName' will always evaluate to 'true'
[-Wpointer-bool-conversion]
if (onFileStruct->fileName && onFileStruct->fileData && ...
~~~~~~~~~~~~~~^~~~~~~~ ~~
DirectoryDeltaTransfer.cpp:61:26: warning: address of array
'fps->onFileStruct->fileName' will always evaluate to 'true'
[-Wpointer-bool-conversion]
if (fps->onFileStruct->fileName && subdirLen < strlen(fp...
~~~~~~~~~~~~~~~~~~~^~~~~~~~ ~~
2 warnings generated.
DynDNS.cpp:222:9: warning: address of array 'existingHost' will always evaluate
to 'true' [-Wpointer-bool-conversion]
if (existingHost && strcmp(existingHost...
^~~~~~~~~~~~ ~~
1 warning generated.
../DependentExtensions/Swig/SwigOutput/CplusDLLIncludes/RakNet_wrap.cxx:339:8: warning:
extra tokens at end of #endif directive [-Wextra-tokens]

endif SWIGWIN

   ^
   //

In file included from ../DependentExtensions/Swig/SwigOutput/CplusDLLIncludes/RakNet_wrap.cxx:409:
./DS_Multilist.h:1004:12: warning: enumeration value
'ML_VARIABLE_DURING_RUNTIME' not handled in switch [-Wswitch]
switch (newType)
^
./DS_Multilist.h:1022:12: warning: enumeration value
'ML_VARIABLE_DURING_RUNTIME' not handled in switch [-Wswitch]
switch (newType)
^
./DS_Multilist.h:1040:12: warning: enumeration value
'ML_VARIABLE_DURING_RUNTIME' not handled in switch [-Wswitch]
switch (newType)
^
./DS_Multilist.h:1066:12: warning: enumeration value
'ML_VARIABLE_DURING_RUNTIME' not handled in switch [-Wswitch]
switch (newType)
^
In file included from ../DependentExtensions/Swig/SwigOutput/CplusDLLIncludes/RakNet_wrap.cxx:377:
In file included from ./RakPeer.h:22:
In file included from ./ReliabilityLayer.h:32:
./DS_BPlusTree.h:1003:42: warning: format specifies type 'int' but the argument
has type 'DataStructures::Table::Row *' [-Wformat]
RAKNET_DEBUG_PRINTF(" %i. %i\n", i+1, leaf->data[i]);
~~ ^~~~~~~~~~~~~
./DS_BPlusTree.h:1008:15: note: in instantiation of member function
'DataStructures::BPlusTree<unsigned int, DataStructures::Table::Row *,
16>::PrintLeaf' requested here
ForEachLeaf(PrintLeaf);
^
../DependentExtensions/Swig/SwigOutput/CplusDLLIncludes/RakNet_wrap.cxx:26303:11: note:
in instantiation of member function 'DataStructures::BPlusTree<unsigned
int, DataStructures::Table::Row *, 16>::PrintLeaves' requested here
(arg1)->PrintLeaves();
^
6 warnings generated.
Undefined symbols for architecture x86_64:
"operator+(RakNet::RakWString const&, RakNet::RakWString const&)", referenced from:
_CSharp_OpPlus__SWIG_1 in RakNet_wrap-519591.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
There was an error durion the DLL build`

[jmderuty]

There is currently an issue with Raknet & Swig because the operator + is declared for the RakWString class, but not implemented. That's not an issue when compiling the cpp library because the operator is never used (so the compiler doesn't need it). However, swig creates wrappers for every available symbols, including the operator.

The solution: Remove the operator+(RakNet::RakWString const&, RakNet::RakWString const&) declaration from rakwstring.h and regenerate the swig library.

[jeremieweldin]

Thanks!