SINGLE TASK 프로그램 LINK 시 UNDEFINED SYMBOL 에러
제품 : ORACLE SERVER
작성날짜 : 1997-08-27
Oracle V7.2, V7.3 에서 Single Task 프로그램인 expst, impst, sqlldrst 를 링크할 때 Undefined Symbol이 떨어지면서 실패하는 경우에는 make 화일을 수정하면 된다.
V7.2에서는 $ORACLE_HOME/rdbms/lib/oracle.mk
V7.3에서는 $ORACLE_HOME/rdbms/lib/ins_rdbms.mk
를 열어서 다음과 같이 수정하도록 한다. 즉, 맨 뒤에 나오는 STLIBS를 TTLIBS로 바꾸면 된다. 아래의 경우는 V7.3의 경우이고 V7.2에서는 $(LIBEXP)가 맨 처음에 나오는 등 약간 차이점이 있지만 해결 방법은 동일하다. STLIBS를 TTLIBS로 바꾸면 된다.
<수정하기 전>
expst: exudrv.o $(LIBEXP) $(LIBORASTD) $(CONFIG) $(PSOLIBLIST)
@$(ECHO) $(LINK) -o $@ $(LDFLAGS) exudrv.o -lexp $(STLIBS)
impst: impdrv.o $(LIBIMP) $(LIBORASTD) $(CONFIG) $(PSOLIBLIST)
@$(ECHO) $(LINK) -o $@ $(LDFLAGS) impdrv.o -limp $(STLIBS)
sqlldrst: ulmai.o $(LIBUL) $(LIBORASTD) $(LIBCLIENT) $(CONFIG) $(PSOLIBLIST) @$(ECHO) $(LINK) -o $@ $(LDFLAGS) ulmai.o $(LIBCLIENT) $(STLIBS)
<수정 후>
expst: exudrv.o $(LIBEXP) $(LIBORASTD) $(CONFIG) $(PSOLIBLIST)
@$(ECHO) $(LINK) -o $@ $(LDFLAGS) exudrv.o -lexp $(TTLIBS)
impst: impdrv.o $(LIBIMP) $(LIBORASTD) $(CONFIG) $(PSOLIBLIST)
@$(ECHO) $(LINK) -o $@ $(LDFLAGS) impdrv.o -limp $(TTLIBS)
sqlldrst: ulmai.o $(LIBUL) $(LIBORASTD) $(LIBCLIENT) $(CONFIG) $(PSOLIBLIST) @$(ECHO) $(LINK) -o $@ $(LDFLAGS) ulmai.o
$(LIBCLIENT) $(TTLIBS)
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SunStudio 11 cannot link libtiff in Solaris 10 (undefined symbol)
Hello
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This software compiles and runs well on Solaris 9 / SunStudio 11
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I have patched the OS and SunStudio to the latest level required but it's no help
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But if I analyse the libraries used the missing symbol is actually there:
nm -g ../lib/FPCSolaris10/libtiff.a
../lib/FPCSolaris10/libtiff.a[tif_msrc.o]:
[Index] Value Size Type Bind Other Shndx Name
[26] | 0| 0|FUNC |GLOB |0 |UNDEF |TIFFClientOpen
[22] | 0| 0|FUNC |GLOB |0 |UNDEF |TIFFError
[24] | 416| 161|FUNC |GLOB |0 |2 |TIFFOpenMem
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Thank you for your help!The libraries are probably being linked in the wrong order.
Libraries are processed in the order seen on the link command. When the linker sees an archive library (.a), it pulls in any .o files from it that can satisfy existing undefined references. Suppose libA needs f1 from library libtiff, but -lA appears on the command line after -ltiff. The reference will not be resolved.
Move the -ltiff option to a spot later on the command line, after all libraries that use libtiff, but before any libraries that libtiff uses. If libraries have circular references (A uses B which uses A), leave -ltiff where it is, but add another one later on the command line. The library will be searched twice.
Another option is to build libtiff as a shared library (.so). The position on the link command line of a shared library is less sensitive, and references to it from later files can still be resolved. You don't list a shared library twice.
An unrelated question: Why are you using the -compat=4 option? That option is provided to allow linking code that was compiled by C++ 4.2 (shipped in 1996), or compiling code that predates the 1998 C++ Standard.
You usually cannot mix -compat=4 binaries with standard-mode binaries, you can't use the C++ standard library in -compat=4 mode, and code using C++ features introduced after the ARM (1991) won't compile in -compat=4 mode. Unless you are stuck with 10-year-old binaries built with C++ 4.2, it is best to recompile all your code in default standard mode (without -compat=4).
The C++ Migration Guide explains all the issues involved in converting code from old-style to standard C++.
[http://docs.sun.com/app/docs/doc/819-3689|http://docs.sun.com/app/docs/doc/819-3689] -
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Symbol Inpndx TY CL Source-File(Object-File) OR Import-File{Shared-object}
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00003b84 .text R_RBR [148] .MyDb::MyDb(std::basic_string<char,std::char_traits<char>,std::allocator<char> >&,std::basic_string<char,std::char_traits<char>,std::allocator<char> >&)
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Thanks
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Edited by: user10127683 on Jun 10, 2009 9:02 AMHi Anand,
http://www.oracle.com/technology/documentation/berkeley-db/db/ref/build_unix/aix.html <-- check FAQ #4.
Please use a "-D_LARGE_FILES=1" when building BDB on AIX.
Let me know how it works.
Thanks,
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Hi ,
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*** Error code 1
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*** Error code 1
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KiranHi Kiran ,
if you cannot upgrade Sun Studio, I suggest that you take a view on this solution:
http://forum.java.sun.com/thread.jspa?forumID=850&threadID=5069680
It only works to std::vector::__insert_aux method, but I think you could get some useful idea from it.
Good luck.
Bye. -
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bind ../../lib/platform/SunOS.sparc/libplatform.a(socket.o) (symbol belongs to implicit dependency /usr/lib/libsocket.so.1)
std::pair<__rwstd::__rb_tree<unsigned,std::pair<const unsigned,device::serial::Device*>,__rwstd::__select1st<std::pair<const unsigned,device::serial::Device*>,unsigned>,std::less<unsigned>,std::allocator<std::pair<const unsigned,device::serial::Device*> > >::iterator,bool>__rwstd::__rb_tree<unsigned,std::pair<const unsigned,device::serial::Device*>,__rwstd::__select1st<std::pair<const unsigned,device::serial::Device*>,unsigned>,std::less<unsigned>,std::allocator<std::pair<const unsigned,device::serial::Device*> > >::insert(const std::pair<const unsigned,device::serial::Device*>&) ../../lib/addins/rdpdr/serial/SunOS.sparc/librdpdrserial.a(source.o)
void __rwstd::__rb_tree<unsigned,std::pair<const unsigned,device::fs::Device*>,__rwstd::__select1st<std::pair<const unsigned,device::fs::Device*>,unsigned>,std::less<unsigned>,std::allocator<std::pair<const unsigned,device::fs::Device*> > >::__deallocate_buffers() ../../lib/addins/rdpdr/fs/SunOS.sparc/librdpdrfs.a(rdpdrfssource.o)
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std::list<enumeration::DeviceInfo*,std::allocator<enumeration::DeviceInfo*> >::iterator std::list<enumeration::DeviceInfo*,std::allocator<enumeration::DeviceInfo*> >::erase(std::list<enumeration::DeviceInfo*,std::allocator<enumeration::DeviceInfo*> >::iterator,std::list<enumeration::DeviceInfo*,std::allocator<enumeration::DeviceInfo*> >::iterator) ../../lib/enum/SunOS.sparc/libenum.a(pnpmodule.o)
...<many more>...
How did you resolve your issue ?
Thanks
Sangeeta -
Libboost_python.so has tons of undefined symbols
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undefined symbol: PyUnicode_Type (/usr/lib/libboost_python.so)
undefined symbol: PyTuple_Type (/usr/lib/libboost_python.so)
undefined symbol: PyExc_RuntimeError (/usr/lib/libboost_python.so)
undefined symbol: PyType_Type (/usr/lib/libboost_python.so)
undefined symbol: PyMethod_Type (/usr/lib/libboost_python.so)
undefined symbol: PyStaticMethod_Type (/usr/lib/libboost_python.so)
undefined symbol: PyLong_Type (/usr/lib/libboost_python.so)
undefined symbol: _Py_NoneStruct (/usr/lib/libboost_python.so)
undefined symbol: PyExc_OverflowError (/usr/lib/libboost_python.so)
undefined symbol: PyExc_AttributeError (/usr/lib/libboost_python.so)
undefined symbol: PyCFunction_Type (/usr/lib/libboost_python.so)
undefined symbol: PyString_Type (/usr/lib/libboost_python.so)
undefined symbol: PyType_GenericAlloc (/usr/lib/libboost_python.so)
undefined symbol: PyList_Insert (/usr/lib/libboost_python.so)
undefined symbol: PyString_InternFromString (/usr/lib/libboost_python.so)
undefined symbol: PyString_AsString (/usr/lib/libboost_python.so)
undefined symbol: PyUnicodeUCS4_FromEncodedObject (/usr/lib/libboost_python.so)
undefined symbol: PyImport_Import (/usr/lib/libboost_python.so)
undefined symbol: PyNumber_InPlaceRshift (/usr/lib/libboost_python.so)
undefined symbol: PyObject_CallMethod (/usr/lib/libboost_python.so)
undefined symbol: PyIter_Next (/usr/lib/libboost_python.so)
undefined symbol: PyNumber_Remainder (/usr/lib/libboost_python.so)
undefined symbol: Py_InitModule4_64 (/usr/lib/libboost_python.so)
undefined symbol: PyType_Ready (/usr/lib/libboost_python.so)
undefined symbol: _PyEval_SliceIndex (/usr/lib/libboost_python.so)
undefined symbol: PyFile_AsFile (/usr/lib/libboost_python.so)
undefined symbol: PyLong_FromUnsignedLong (/usr/lib/libboost_python.so)
undefined symbol: PyMem_Free (/usr/lib/libboost_python.so)
undefined symbol: PyNumber_InPlaceXor (/usr/lib/libboost_python.so)
undefined symbol: PyNumber_InPlaceOr (/usr/lib/libboost_python.so)
undefined symbol: PyBool_FromLong (/usr/lib/libboost_python.so)
undefined symbol: PyDict_Items (/usr/lib/libboost_python.so)
undefined symbol: PyNumber_InPlaceRemainder (/usr/lib/libboost_python.so)
undefined symbol: PyErr_NoMemory (/usr/lib/libboost_python.so)
undefined symbol: PyComplex_ImagAsDouble (/usr/lib/libboost_python.so)
undefined symbol: PyObject_IsTrue (/usr/lib/libboost_python.so)
undefined symbol: PyNumber_Lshift (/usr/lib/libboost_python.so)
undefined symbol: PyNumber_InPlaceMultiply (/usr/lib/libboost_python.so)
undefined symbol: _PyObject_New (/usr/lib/libboost_python.so)
undefined symbol: PyObject_GetItem (/usr/lib/libboost_python.so)
undefined symbol: PyString_FromStringAndSize (/usr/lib/libboost_python.so)
undefined symbol: PyNumber_InPlaceLshift (/usr/lib/libboost_python.so)
undefined symbol: PyString_Size (/usr/lib/libboost_python.so)
undefined symbol: PyDict_Update (/usr/lib/libboost_python.so)
undefined symbol: PyComplex_RealAsDouble (/usr/lib/libboost_python.so)
undefined symbol: PyErr_Format (/usr/lib/libboost_python.so)
undefined symbol: PyNumber_And (/usr/lib/libboost_python.so)
undefined symbol: PyUnicodeUCS4_AsWideChar (/usr/lib/libboost_python.so)
undefined symbol: PyNumber_InPlaceAdd (/usr/lib/libboost_python.so)
undefined symbol: PyObject_GetAttr (/usr/lib/libboost_python.so)
undefined symbol: PyErr_ExceptionMatches (/usr/lib/libboost_python.so)
undefined symbol: PyErr_Occurred (/usr/lib/libboost_python.so)
undefined symbol: PyDict_Copy (/usr/lib/libboost_python.so)
undefined symbol: PyArg_ParseTupleAndKeywords (/usr/lib/libboost_python.so)
undefined symbol: PyNumber_Divide (/usr/lib/libboost_python.so)
undefined symbol: PyEval_GetGlobals (/usr/lib/libboost_python.so)
undefined symbol: PyDict_Keys (/usr/lib/libboost_python.so)
undefined symbol: PyErr_SetObject (/usr/lib/libboost_python.so)
undefined symbol: PyNumber_Multiply (/usr/lib/libboost_python.so)
undefined symbol: PyRun_FileExFlags (/usr/lib/libboost_python.so)
undefined symbol: PyObject_Size (/usr/lib/libboost_python.so)
undefined symbol: PyString_FromString (/usr/lib/libboost_python.so)
undefined symbol: PyString_FromFormat (/usr/lib/libboost_python.so)
undefined symbol: PyNumber_InPlaceAnd (/usr/lib/libboost_python.so)
undefined symbol: PyInt_FromLong (/usr/lib/libboost_python.so)
undefined symbol: PyDict_Size (/usr/lib/libboost_python.so)
undefined symbol: PyDict_GetItem (/usr/lib/libboost_python.so)
undefined symbol: PyObject_SetItem (/usr/lib/libboost_python.so)
undefined symbol: PyInt_AsLong (/usr/lib/libboost_python.so)
undefined symbol: PyObject_RichCompare (/usr/lib/libboost_python.so)
undefined symbol: PyCFunction_NewEx (/usr/lib/libboost_python.so)
undefined symbol: PyDict_Values (/usr/lib/libboost_python.so)
undefined symbol: PyNumber_Rshift (/usr/lib/libboost_python.so)
undefined symbol: PyStaticMethod_New (/usr/lib/libboost_python.so)
undefined symbol: PyType_IsSubtype (/usr/lib/libboost_python.so)
undefined symbol: PyNumber_Add (/usr/lib/libboost_python.so)
undefined symbol: PyList_Sort (/usr/lib/libboost_python.so)
undefined symbol: PySequence_DelSlice (/usr/lib/libboost_python.so)
undefined symbol: PyErr_WarnEx (/usr/lib/libboost_python.so)
undefined symbol: PyNumber_Xor (/usr/lib/libboost_python.so)
undefined symbol: PyObject_ClearWeakRefs (/usr/lib/libboost_python.so)
undefined symbol: PyNumber_Subtract (/usr/lib/libboost_python.so)
undefined symbol: PySlice_New (/usr/lib/libboost_python.so)
undefined symbol: PyObject_GetAttrString (/usr/lib/libboost_python.so)
undefined symbol: PyObject_IsInstance (/usr/lib/libboost_python.so)
undefined symbol: PyRun_StringFlags (/usr/lib/libboost_python.so)
undefined symbol: PyObject_SetAttrString (/usr/lib/libboost_python.so)
undefined symbol: PyWeakref_NewRef (/usr/lib/libboost_python.so)
undefined symbol: PyErr_NewException (/usr/lib/libboost_python.so)
undefined symbol: PyList_Append (/usr/lib/libboost_python.so)
undefined symbol: PyObject_SetAttr (/usr/lib/libboost_python.so)
undefined symbol: PyDict_GetItemString (/usr/lib/libboost_python.so)
undefined symbol: PyNumber_InPlaceDivide (/usr/lib/libboost_python.so)
undefined symbol: PyLong_AsLongLong (/usr/lib/libboost_python.so)
undefined symbol: PyLong_AsUnsignedLongLong (/usr/lib/libboost_python.so)
undefined symbol: PyNumber_Or (/usr/lib/libboost_python.so)
undefined symbol: PyObject_DelItem (/usr/lib/libboost_python.so)
undefined symbol: PyNumber_InPlaceSubtract (/usr/lib/libboost_python.so)
undefined symbol: PyMethod_New (/usr/lib/libboost_python.so)
undefined symbol: PyEval_CallFunction (/usr/lib/libboost_python.so)
undefined symbol: PySequence_GetSlice (/usr/lib/libboost_python.so)
undefined symbol: PyTuple_Size (/usr/lib/libboost_python.so)
undefined symbol: PyImport_ImportModule (/usr/lib/libboost_python.so)
undefined symbol: PyErr_Clear (/usr/lib/libboost_python.so)
undefined symbol: PyTuple_New (/usr/lib/libboost_python.so)
undefined symbol: PyTuple_GetItem (/usr/lib/libboost_python.so)
undefined symbol: PyErr_SetString (/usr/lib/libboost_python.so)
undefined symbol: PyObject_CallFunction (/usr/lib/libboost_python.so)
undefined symbol: PyList_Reverse (/usr/lib/libboost_python.so)
undefined symbol: PyFile_FromString (/usr/lib/libboost_python.so)
undefined symbol: _PyType_Lookup (/usr/lib/libboost_python.so)
undefined symbol: PyList_New (/usr/lib/libboost_python.so)
undefined symbol: PyMem_Malloc (/usr/lib/libboost_python.so)
undefined symbol: PyCallable_Check (/usr/lib/libboost_python.so)
undefined symbol: PyDict_Clear (/usr/lib/libboost_python.so)
undefined symbol: PySequence_SetSlice (/usr/lib/libboost_python.so)
undefined symbol: PyLong_AsUnsignedLong (/usr/lib/libboost_python.so)
undefined symbol: PyDict_New (/usr/lib/libboost_python.so)
I'm not entirely sure what the problem is. There was a bug report filed for the exact same problem a few years ago and it was taken upstream to the boost developers (and later fixed), but I can't understand how the problem was actually solved except for a single patch.
Does anyone know what these errors mean and what I can do to fix things?@sand_man about vegastrike-svn, i remember i've look at it at some point and a discussion was in arch-general about it. that application has multiple versions of boost.
http://permalink.gmane.org/gmane.linux. … eral/32489
also i think that vegastrike-svn building system needs to add a proper flag for linking, like passing -lpython2.7 or -lpython3, depending of what is using
Last edited by wonder (2011-03-04 10:00:14) -
Hi
I'm trying to use prof and so have to use the static version of our libraries. Those are generated freshly by the build process but haven't been used for years.
I am getting an 'Undefined symbol' linking error. The command looks something like this:
cc -p foo.o -foo -Bstatic -lourlib1 -lourlib2 -Bdynamic <sybase libs> -lm -lsocket
The function in question, say bar() is referenced from ourlib2 and is defined with ourlib1. I can see it using nm:
nm libourlib1.a:
[14] | 104| 60|FUNC |GLOB |0 |2 |bar
I even tried referring to ourlib1 by fullpath/libourlib1.a - no luck.
I have tried to reproduce this on a toy program - no luck again, everything links fine! Clearly something is the matter with our setup... but what could it be? My version is cc: Sun C 5.5 2003/03/12
Thanks!Static libraries are searched in order for symbols that have been referenced but not yet defined. If the command line has the sequence
lib1.a lib2.a
and lib2.a needs a symbol from lib1.a, it is too late -- lib1 has already been searched.
If lib1.a does not need any symbols from lib2.a, just reverse the sequence:
lib2.a lib1.a
If the libraries cross-reference each other, you can list the libraries more than once:
lib1.a lib2.a lib1.a lib2.a
Symbols from lib1.a needed by lib2.a will be picked up the second time lib1.a is scanned. These new symbols from lib1.a might need additional sybols from lib2.a, so you can list it again. In really bad cases, you would need to list the libraries several times.
You don't have this exact problem with shared libraries, because all the symbols from a shared library are available throughout the linking process. But you have a different problem if shared libraries reference each other.
The linker arranges for shared libraries to be initialized in reverse dependency order. If lib1 depends on (uses symbols from) lib2, the linker will arrange for lib2 to be initialized first. But if the libraries depend on each other, there is no correct initialization order. You always run the risk of trying to use something from a library that has not been initialized.
Best practice for all kinds of libraries is to organize them in a hierarchy: If lib1 uses something from lib2, then lib2 does not use anything from lib2. If you can't achieve that effect, either combine them into a single library, or split out parts of lib1 and lib2 into a new library to create a hierarchical ordering among the three. -
Missing prototype and Undefined Symbol errors
So, I am using an Opal Keyy XEM3005 board.
Depending on the documentation I read, this board has a native ANSI C interface with a C++ wrapper.
In their forums, they say to rename the ".cpp" file to "c", and then go forward with calling the default constructor & keep track of the pointer. Their functions are all in an externally loadable DLL.
Well and good.
Their API documentatin is available here: http://www.opalkelly.com/library/FrontPanelAPI/
I have written a REALLY simple app to ease my way in - it does nothing more than allow the user to throw a switch, and when this happens, it goes off to connect to the board:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#include <cvirte.h>
#include <userint.h>
#include "Try1.h"
#include "XEM.h"
#define _WIN32_WINNT 0x0501
//#define _WIN32
#include <windows.h>
static int panelHandle;
static okFrontPanel_HANDLE XEM_Device;
int __stdcall WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPSTR lpszCmdLine, int nCmdShow)
if (InitCVIRTE (hInstance, 0, 0) == 0)
return -1; /* out of memory */
if ((panelHandle = LoadPanel (0, "Try1.uir", PANEL)) < 0)
return -1;
DisplayPanel (panelHandle);
RunUserInterface ();
DiscardPanel (panelHandle);
return 0;
int CVICALLBACK Connect (int panel, int control, int event,
void *callbackData, int eventData1, int eventData2)
int Value = 0;
switch (event)
case EVENT_COMMIT:
GetCtrlVal(PANEL, PANEL_CONNECT_SWITCH, &Value);
SetCtrlVal(PANEL, PANEL_CONNECT_LED, Value);
if( Value )
XEM_Connect(XEM_Device);
else
XEM_Disconnect(XEM_Device);
break;
return 0;
int CVICALLBACK Quit (int panel, int control, int event,
void *callbackData, int eventData1, int eventData2)
switch (event)
case EVENT_COMMIT:
QuitUserInterface (0);
break;
return 0;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This, of course, works fine by itself (with empty _Connect() and _Disconnect() functions)
I then started working with the XEM_Connect function.
The first step is to run their LoadDLL function as such:
int XEM_Connect ( okFrontPanel_HANDLE XEM_Device )
int NoDevices = 0; // Number of devices attached to the PC
// Load the DLL (?)
// Load the FrontPanel DLL
if (FALSE == okFrontPanelDLL_LoadLib(NULL))
printf("Could not load FrontPanel DLL\n");
exit(-1);
return XEM_SUCCESS;
And this would compile and run just fine.
Now, when I added the functions to start trying to get info about the device, I started getting "missing prototype" errors.
int XEM_Connect ( okFrontPanel_HANDLE XEM_Device )
int NoDevices = 0; // Number of devices attached to the PC
// Load the DLL (?)
// Load the FrontPanel DLL
if (FALSE == okFrontPanelDLL_LoadLib(NULL))
printf("Could not load FrontPanel DLL\n");
exit(-1);
// Find out how many devices are attached
XEM_Device = okFrontPanel_Construct( );
// XEM_Device = okCFrontPanel( void );
// NoDevices = GetDeviceCount( );
printf("%d OK devices attached\n", NoDevices);
// Call the contructor?
// okCFrontPanel ();
return XEM_SUCCESS;
Now, I searched the forums and found the bits about adding #define _WIN32_WINNT 0x0501 prior to inclusion of windows.h. Did that. No joy.
Then I searched some more and found the bit about changing the build options to uncheck the "prototype required" flag.
Done.
This seemed to work at first (the above code could be built with no errors, and appeared to run).
So I thought maybe I had it, and added the next line, so:
int XEM_Connect ( okFrontPanel_HANDLE XEM_Device )
int NoDevices = 0; // Number of devices attached to the PC
// Load the DLL (?)
// Load the FrontPanel DLL
if (FALSE == okFrontPanelDLL_LoadLib(NULL))
printf("Could not load FrontPanel DLL\n");
exit(-1);
// Find out how many devices are attached
XEM_Device = okFrontPanel_Construct( );
OpenBySerial( XEM_Device, "UaLgzvVpBJ" );
// XEM_Device = okCFrontPanel( void );
// NoDevices = GetDeviceCount( );
printf("%d OK devices attached\n", NoDevices);
// Call the contructor?
// okCFrontPanel ();
return XEM_SUCCESS;
Now it doesn't complain about no prototypes (duh), but instead I get linker errors:
Undefined symbol '_OpenBySerial@0' referenced in "XEM.c".
So, dredging through the .h and .c files, I found a couple of things:
in the okFrontPanel.c file I found the following:
okDLLEXPORT ok_ErrorCode DLL_ENTRY
okFrontPanel_OpenBySerial(okFrontPanel_HANDLE hnd, const char *serial)
if (_okFrontPanel_OpenBySerial)
; return((*_okFrontPanel_OpenBySerial)(hnd, serial));
return(ok_UnsupportedFeature);
In the okFrontPanel.h file I found:
and also:
okDLLEXPORT ok_ErrorCode DLL_ENTRY okFrontPanel_OpenBySerial(okFrontPanel_HANDLE hnd, const char *serial);
So, I see them in the .h & .c files, but the linker is bombing out.
I smell a problem with actual code to link being in the DLL... How do I resolve this, any ideas? Or am I doing something so stupidly (and obviously) wrong that I'm being blinded to it?Hi tomii,
My suspicion is that these issues are due to using a C++ dll in a C environment. There are inherent challenges with performing such an operation as you have to make sure all your parameters and settings are correct.
I also could not find the documentation that the Opal Kelly dll is ANSI C but it sounds like you can use this in C with some reconfiguration. I would recommend using their forums to get more information on what steps need to take place to get things working in ANSI C.
From the information you provided, I did find some resources on the missing prototype error and undefined symbol issue with the linker.
For the missing prototype I found a thread of someone actually using LabWindows and seeing this compiler error you may want to look at
http://bytes.com/topic/c/answers/695019-missing-prototype
I found a few cases where using a function definition of int func(void) removes such issue when int func() does not.
Another link I found that may be worth a look can be found at http://www.parashift.com/c++-faq-lite/mixing-c-and-cpp.html
It gives some good pointers to mixing C and C++ code. Some of it may be applicible in your case.
And, a resource for your undefined symbol linking issue.
http://www.cprogramming.com/tutorial/compiler_linker_errors.html
Hopefully these resources will give some context for getting things compiling and working with your dll.
Good luck!
James W.
Applications Engineer
National Instruments -
"undefined symbol" error while using a custom instrument driver
Hello all, I'm facing a problem related to instrument driver creation.
I want to pack a part of my code to a .FP to be able to reuse it in other applications of mine. This part of code includes calls to Windows API and a third party dll. I have included both windows.h and the include for the dll in the header file for the instrument. I developed the source code and next a little application that simply calls one function to test the result of my work, but I get some 'undefined symbol' errores while linking the test application with the instrument. The instrument header file is included in program source file.
Situation is as follows:
I can run the test application if I include the source file for the instrument directly in the project (without loading the instrument)
I created a static library and can have the test program up and running if directly including the library in the project (again without the .fp file)
I get linker errors when trying to use the instrument I created based on the same code, both when including the instrument at source code level and when including at library level. Adding the .fp to the project makes no difference
Linker errors are all related to WinSDK and third-party dll functions.
Question is: where and how I have to declare the symbols apart including the appropriate .h files in the instrument header file?
Proud to use LW/CVI from 3.1 on.
My contributions to the Developer Zone Community
If I have helped you, why not giving me a kudos?Being waited on to log on... how flattering
I wish I had a simple and obvious solution, but I don't.
The problem in this case is that, whereas DLLs (via their import libraries) carry no additional build-time dependencies to their clients, that is not the case with object files and static libraries: any project that uses those .obj and .lib files must satisfy all of their dependencies when that project builds.
There is a mechanism, with .fp files, to advertise such dependencies to the clients of the .fp, and that is the auto-load list (Edit>>FP Auto-Load List, in the function tree editor). The caveat, however, is that these indirect dependencies must have a companion .fp that you can add to this list. And in your case, you don't have one. So the only solution I can think of is for you to create a very thin wrapper module where you would wrap all of the SDK functions that you need, then create a basic .fp for this wrapper -- you can do this semi-automatically, from the header file (Options>>Generate Function Tree) -- and then add this .fp to the auto-load list of your primary .fp. And then you'll probably have to create a second .fp wrapper for your other dependency (a non-SDK third-party DLL?).
Once you have declared the dependency chain for this .fp, you should then be able to use it on any test application and CVI should know to link in these additional static libraries whenever it builds the test application.
If you choose to go this route, you'll probably have to deal with a bunch of non-standard data types in the parameters of the SDK functions. I don't remember if these are automatically added to the .fp when you create it from the header file. If not, all you need to do is add them to the .fp later (Options>>Data Types, from the function panel editor). Don't worry about providing the definitions for these data types. They're not necessary. You just need to make sure that their names are in the list.
Luis
Message Edited by LuisG on 05-19-2010 10:43 AM -
Pro*C using Oracle 11g - ld: 0711-317 ERROR: Undefined symbol: .sqlcxt
Hi
We we are migrating from oracle 10g to 11g and AIX 5.3 to AIX 6.1. When I run the make file I get the following link errors. Note the 10g system is running using 32bit libs, and the new system is runing the 64bit libs.
makegmake -f Makefile.all all SYSTEM=rs6k CC="cc_r" LINKER="cc_r"
cc_r -lclntsh -L/wfm/usr/oracle/product/11.2.0/db/lib /home/Builds/CommonLib/Lib/AIX/cuCommonLib.a TagCommonLib/tagCommonLi
b.a ObjFiles/TagDailyStats.o ObjFiles/TagCreate.o ObjFiles/EventLogMessageFormat.o ObjFiles/TagHeartBeatMsg.o ObjFiles/TagWriteTimingLog.o ObjFiles/Ta
gGenMain.o -o TagTG
ld: 0711-317 ERROR: Undefined symbol: .sqlcxt
ld: 0711-317 ERROR: Undefined symbol: .sqlglm
ld: 0711-317 ERROR: Undefined symbol: .sqlbuft
ld: 0711-345 Use the -bloadmap or -bnoquiet option to obtain more information.
gmake: *** [TagTG] Error 8
make: 1254-004 The error code from the last command is 2.
After reading some of the ideas on the web, I added the following options, -lsql11 -I/wfm/usr/oracle/product/11.2.0/db/precomp/public, but got the same error.
> make
gmake -f Makefile.all all SYSTEM=rs6k CC="cc_r" LINKER="cc_r"
cc_r -lclntsh -lsql11 -I/wfm/usr/oracle/product/11.2.0/db/precomp/public -L/wfm/usr/oracle/product/11.2.0/db/lib /home/Buil
ds/CommonLib/Lib/AIX/cuCommonLib.a TagCommonLib/tagCommonLib.a ObjFiles/TagDailyStats.o ObjFiles/TagCreate.o ObjFiles/EventLogMessageFormat.o ObjFiles
/TagHeartBeatMsg.o ObjFiles/TagWriteTimingLog.o ObjFiles/TagGenMain.o -o TagTG
ld: 0711-317 ERROR: Undefined symbol: .sqlcxt
ld: 0711-317 ERROR: Undefined symbol: .sqlglm
ld: 0711-317 ERROR: Undefined symbol: .sqlbuft
ld: 0711-345 Use the -bloadmap or -bnoquiet option to obtain more information.
gmake: *** [TagTG] Error 8
make: 1254-004 The error code from the last command is 2.
Can anyone please suggest to me what I am doing wrong .
Thanks,
JimHi,
I'm experiencing the same problem, thank you for your 32 bit tip.
I installed InstantClient for 64bit and didn't find any of the sql??? functions.
http://download.oracle.com/otn/linux/instantclient/112010/oracle-instantclient11.2-precomp-11.2.0.1.0-1.x86_64.zip
After that I installed the 64 bit client with universal installer, sql*plus, programmer and OCI packets, got lots of errors, cause I have not the official distribution and scripts are partly wrong.
T24-SMS-1:/usr/lib# uname --all
Linux T24-SMS-1 2.6.26-2-amd64 #1 SMP Wed May 12 18:03:14 UTC 2010 x86_64 GNU/Linux
Then again I searched for sql??? functions sqlcxt I took and found them: (Note: they were not present with the instantclient distri with proc libraries
T24-SMS-1:/usr/lib# find /home/sms/instantclient_11_2/lib -type f -exec grep -H -i sqlcxt {} \; | grep Binary
Binary file /home/sms/instantclient_11_2/lib/libsql11.a matches
Binary file /home/sms/instantclient_11_2/lib/liborasdk.so.11.1 matches
Binary file /home/sms/instantclient_11_2/lib/libsrvmhas11.so matches
Binary file /home/sms/instantclient_11_2/lib/libclntsh.so.11.1 matches
Binary file /home/sms/instantclient_11_2/lib/libsqlplus.a matches
After that I again got the same errors. I will try the 32 bit distribution and I hope I will find some header file with sql??? functions in it. -
Hi,
I am using strtok_r in my program. I have included <string.h>
I am getting linker error undefined symbol strtok_r
What library should be linked? any idea?
I am using SOLARISSunOS lisvr 5.8 Generic_108528-18 sun4u sparc SUNW,Sun-Fire-V210
CC tcpsvr.C -lsocket -lnsl -o tcpsvr
Undefined first referenced
symbol in file
char*strtok_r(char*,const char*,char**) tcpsvr.o
ld: fatal: Symbol referencing errors. No output written to tcpsvr
PS: I have put an extern as follows:
extern char * strtok_r(char *,const char *,char**);
if I dont put this extern stmt, it complained as follows:
CC tcpsvr.C -lsocket -lnsl -o tcpsvr
"tcpsvr.C", line 111: Error: The function "strtok_r" must have a prototype.
1 Error(s) detected.
Following is my function call.
char cpy[1024], lasts[1024];
strcpy(cpy, (char*)command); // command is a string
char * cmd=strtok_r(cpy,"\n",(char**)&lasts);
I tried
extern char * strtok_r(char a,const char b,char** c);
also. -
Single-task message wating for 30 seconds
Hi guys,
I encountered some production issues: in some moments some random sql are taking a lot of time to excute.
I enabled the sql_trace on the system and managed to catch an sql that raises issues. this is the trace parsed with tk prof:
SELECT NVL(RUNNING_TOTALS_AMOUNT, 0)
FROM
ACT_TOTALS_TO_DATE WHERE ACCOUNT_NO = :B1
call count cpu elapsed disk query current rows
Parse 1 0.00 29.35 0 0 1 0
Execute 2 0.00 0.00 0 0 1 0
Fetch 2 0.00 0.00 0 4 0 0
total 5 0.00 29.35 0 4 2 0
Misses in library cache during parse: 0
Optimizer mode: RULE
Parsing user id: 158 (recursive depth: 2)
Rows Row Source Operation
0 SORT GROUP BY (cr=4 pr=0 pw=0 time=62 us)
0 MERGE JOIN OUTER (cr=4 pr=0 pw=0 time=38 us)
0 TABLE ACCESS BY INDEX ROWID ACT_TOTALS_TO_DATE_MRC (cr=4 pr=0 pw=0 time=33 us)
0 INDEX UNIQUE SCAN IDX_ATTDM_ACC_NO (cr=4 pr=0 pw=0 time=29 us)(object id 233866)
0 REMOTE ACT_TOTALS_TO_DATE_CALLS (cr=0 pr=0 pw=0 time=0 us)
Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
single-task message 1 29.34 29.34
SQL*Net message to dblink 9 0.00 0.00
SQL*Net message from dblink 9 0.00 0.00
********************************************************************************usually this SQLs executes very good. the execution plan is what I expect. if I execute it on that machine it works fine.
this SQL is executed by a pl/sql procedure. it ussualy works fine, but at that moment the entire procedure took around 30 seconds.
ACT_TOTALS_TO_DATE is a view that uses table from another instance. the view uses db links.
this problem appears on random SQLs and the parse time is huge.
can you please tell me what is this wait?:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
single-task message 1 29.34 29.34this is the wait line from raw trace file:
WAIT #18: nam='single-task message' ela= 29347212 p1=0 p2=0 p3=0 obj#=-1 tim=1272918022974421
I can admit that our code is not well build and it is not using BIND very good. I encountered a lot of hard parses and with this I have latches on shared pool.
but can this explain this behavior?
Thanks for your time.
Edited by: alinux on Apr 22, 2011 6:03 PMGuys,
how can a SQL wait 30 seconds in PARSE phase of its execution for:
'single-task message' wait?
or
In my trace file I have other SQL that have long parsing time but no wait related to these:
SELECT y, aG,b
FROM
xxx WHERE CONTRACT_ID = :B1
call count cpu elapsed disk query current rows
Parse 1 5.14 5.02 0 0 0 0
Execute 2 1.41 1.37 0 0 0 0
Fetch 2 0.00 0.00 0 6 0 2
total 5 6.55 6.40 0 6 0 2
Misses in library cache during parse: 0
Optimizer mode: RULE
Parsing user id: 158 (recursive depth: 2)
Rows Row Source Operation
2 TABLE ACCESS BY INDEX ROWID xxx (cr=6 pr=0 pw=0 time=109 us)
2 INDEX UNIQUE SCAN yyy (cr=4 pr=0 pw=0 time=63 us)(object id 234057)
********************************************************************************Thanks a lot
Edited by: alinux on Apr 29, 2011 5:51 PM -
Git Xorg: libxcb-xlib.so.0: undefined symbol: _xcb_lock_io
Hi guys,
I recently installed latest git xserver-xorg, besides that I had to compile 51 other required dependencies including mesa, libx11, drm etc. One problem is that git libxcb removed libxcb-xlib and made them an inline functions upstream http://cgit.freedesktop.org/xcb/libxcb/ … 89495f3452. Lots of programs complain about "/usr/lib/libxcb-xlib.so.0: undefined symbol: _xcb_lock_io" which now in new library path does not exist! Also programs such as gnome-settings-daemon is linked against libxcb-xlib.so.0 so I get no themed DE. Other than that everything works great with nvidia 180.27 driver, I yet still have to see what's new about the git X .Try this, works for me:
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