XercesLib fails to link on Microsoft Visual Studio 7.1
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Key: XERCESC-1665
URL: https://issues.apache.org/jira/browse/XERCESC-1665
Project: Xerces-C++
Issue Type: Bug
Components: Build
Affects Versions: 2.7.0
Environment: Microsoft Visual Studio 7.1 "Enterprise Architect"
Reporter: Rick Parrish
Download 2.7.0 tarball; unzip source tree; open the
\xerces-c-src_2_7_0\Projects\Win32\VC7.1\xerces-all solution in VS7.1; select
build-all to build entire solution. The XercesLib library is successfully built
but all of the demo projects that link to it fail. Sample error message:
------ Build started: Project: StdInParse, Configuration: Static Debug Win32
------
Linking...
xerces-c_static_2D.lib(BinHTTPURLInputStream.obj) : error LNK2019: unresolved
external symbol [EMAIL PROTECTED] referenced in function "public: void
__thiscall xercesc_2_7::SocketJanitor::reset(unsigned int *)" ([EMAIL
PROTECTED]@xercesc_2_7@@[EMAIL PROTECTED])
.\..\..\..\..\..\Build\Win32\VC7.1\StaticDebug/StdInParse.exe : fatal error
LNK1120: 1 unresolved externals
Examining the "SocketJanitor" class declared inside BinHTTPURLInputStream
reveals that the reset function directly calls the WinSocket 2.0 API
"clocksocket" function while the rest of the code calls a DLL thunk function. I
presume the purpose of the thunking fuctions is to remove any direct linking
dependency to the winsock library. However, directly calling "closesocket" in
the helper class breaks that.
Work around #1 - use a #pragma comment(lib, "ws2_32") to force linking the
winsock DLL and supress the link error.
Work around #2 - modify the janitor helper class as follows:
Replace this ...
void reset(SOCKET* p = 0) { if(fData) closesocket(*fData); fData=p; }
... with this ...
void reset(SOCKET* p = 0) { if(fData && gWSclosesocket)
gWSclosesocket(*fData); fData=p; }
This also requires moving the gWSsocketclose declaration ahead of the
SocketJanitor class inside BinHTTPURLInputStream.
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