Ld.so.1 problem - fatal: relocation error - "referenced symbol not found"

Question

Hi, I've been trying to compile and run my application non Solaris using CC (detils below) but haven't got luck with running the application because of a linker error :
ld.so.1: java: fatal: relocation error: file ./libtest.so: symbol __1cDstdMbasic_string4Ccn0ALchar_traits4Cc__n0AJallocator4Cc___J__nullref_: referenced symbol not found
Here's what I'm trying to do :
I'm compieing one library to include another shared library whcih uses the "string" class (STL). The compilation of both the libraries proceeds perfectly fine. However, when i preload this library with LD_PRELOAD and run a JAVA application (which will have calls to some function in the preloaded library), the get the above linker error.
Here's what all I have tries to get thsi wroking : ( I understand that this error is due to a missing library that CC has not linked to and i've no idea what the library is!!!)
1.> # LD_LIBRARY_PATH=/usr/lib:$LD_LIBRARY_PATH
# export LD_LIBRARY_PATH - NO LUCK :-(
2.> linked to /opt/SUNWspro/lib/libCrun.so (found this from another forum on the net), but NO LUCK :-(
3.> export LD_DEBUG=bindings
export LD_DEBUG_OUTPUT=/home/log.txt (so that all sysmbols refered are logged!!!)
i did a grep on the log for the symbol but NO LUCK!!! :-(
Please can you help me with this? What is the library that is to be linked too, or is there something else?
Details About my system, compiler and compilation options :
1.> uname -a output : SunOS sh1sol9 5.9 Generic_117171-12 sun4u sparc SUNW,Sun-Fire-280R Solaris
2.> CC version : Sun WorkShop 6 update 2 C++ 5.3
3.> Compilation flags i've used to build the library :
FIRST LIBRARY : CC -G -xcode=pic32 -I../common/ -ldl ../common/logger.cpp helper_functions.cpp BCPEntries.cpp BCP_class.cpp -o libBCP.so
SECOND LIBRARY : CC -G -xcode=pic32 -I../common/ test_BCP_construct.cpp -lBCP -L. -o libtest.so
Please help me out of this,
Any and every help (or even a hint to it) will be appreciated!!!
Thanks in advance,
Madhur Kumar Tanwani

Answer 1

Refer to the C++ Users Guide that comes with the compiler, the chapter on Building Libraries, which explains these points in more detail.
When you build a C++ shared library, you must explicitly list all the libraries that it depends on. Unlike building an executable, the CC -G command does not by default create dependencies on system libraries. Although not explained well in the Guide, you should be sure you get the shared (.so) versions of all libraries, not the static (.a) versions.
All C++ programs require at least libCrun and libc. Programs that use the C++ Standard library (using anything in the std namespace, like std::string) also need to link to the appropriate version of the library.
The default library is libCstd. If you compile using the optional STLport library, you need the libstlport instead. You cannot use both libCstd and libstlport in the same program.
In your case, the build command would look something like this, assuming you are using the default libCstd:
CC -G -o mylib.so ..... -library=Cstd,Crun -lc
Be sure that any preceeding -Bstaic option is followed by -Bdynamic before listing these system libraries.
To verify you have picked up the dynamic libraries, run the command
ldd mylib.so
to see a list of dependencies. If you don't see the following in the list
/usr/lib/libCstd
/usr/lib/libCrun
/usr/lib/libc (or /lib/libc)
something is wrong.
A note about LD_LIBRARY_PATH: don't use it.
Ideally, the environment variable should never be set. If you must set it to reach vendor-supplied libraries, never put the system directories /lib or /usr/lib on the path, and never put the compiler installation directory, like /opt/SUNWspro/... on the path. You can wind up forcing the runtime loader to seach directories in the wrong order and pick up inappropriate versions of libraries.
For more on LD_LIBRARY_PATH, read this note in Rod Evans' blog. He's the Sun linker expert. The material here is available in the manuals, but his blog has a nice summary.
http://blogs.sun.com/roller/page/rie/?anchor=tt_ld_library_path_tt