Jeremy C. Reed wrote, On 31.5.2011 22:28:
> Using Sunstudio CC: Sun C++ 5.10 SunOS_sparc 2009/06/03
>
> $ /usr/bin/CC -I/udir/jreed/opt/log4cplus/include -L/udir/jreed/opt/log4cplus/lib -llog4cplus ~/l1.cc
> Undefined first referenced
> symbol in file
> log4cplus::Logger::~Logger() l1.o
> log4cplus::Logger log4cplus::Logger::getInstance(const std::string &)
> l1.o
> ld: fatal: Symbol referencing errors. No output written to a.out
>
>
> Here is example code:
>
> $ cat ~/l1.cc
> #include <log4cplus/logger.h>
>
> int main ()
> {
> using namespace log4cplus;
> Logger logger = Logger::getInstance("main");
> return 0;
> }
>
> Using g++ for this compiles/links fine. I think Sunstudio is more
> strict by default.
>
> Note that the installed log4cplus was builting using g++ (GCC) 3.4.3
> (csl-sol210-3_4-branch+sol_rpath).
>
> So the installed header and the logger.cxx code has:
>
> static Logger getInstance(const log4cplus::tstring& name);
>
> getInstance (const log4cplus::tstring& name)
>
> But nm shows:
>
> [2134] | 251340| 48|FUNC |GLOB |0 |227 |log4cplus::Logger::getInstance(std::string )
>
> Notice that the "const" and the "&" (ampersand) is gone.
>
> As for the other undefined symbol, I don't know.
>
> $ nm ~/opt/log4cplus/lib/liblog4cplus.so | c++filt | grep log4cplus::Logger::~Logger
> [1852] | 251568| 104|FUNC |GLOB |0 |227 |log4cplus::Logger::~Logger()
> [2116] | 251136| 108|FUNC |GLOB |0 |227 |log4cplus::Logger::~Logger()
> [1369] | 251460| 108|FUNC |GLOB |0 |227 |log4cplus::Logger::~Logger()
>
>
> I had this problem with 1.0.4 and with code from subversion (I am at
> revision 1535).
>
> This may not be a log4cplus problem, but maybe someone here recognizes
> this or has some ideas?
>
That sounds like you could have headers/binaries mismatch. Another thing, try
putting the -llog4cplus at the end of the command line.
--
VH
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