Re: [Log4cplus-devel] log4cplus and undefined symbol with Sunstudio

[Václav H. <v.h...@sh...>]

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