undefined reference

Do it together today rgb-d SLAM (3),The program will receive the following error:Cv::initmodule_nonfree ();/home/yhzhao/slam/src/detectfeatures.cpp:32:undefined reference to ' Cv::initmodule_nonfree () 'It's strange that I can find libopencv_nonfree.

In particular, the definition of a function in a template class is not written in the corresponding. h fileReference: Http://stackoverflow.com/questions/8752837/undefined-reference-to-template-class-constructorMy understanding:Detach the function

To use the static code check tool splint, after downloading the tar package, compile and generate the following questions: Csf-. O: In function 'input ': /Home/wine/splint-3.1.2/src/cstrap. C: 2483: Undefined reference to 'yywrap'Csung. O: In

Undefined reference to libiconv_open ext/iconv/. libs/iconv. o by install phpsource, libiconv_openiconvError message: ext/iconv /. libs/iconv. o (. text + 0x30e2): In function 'php _ iconv_stream_filter_factory_create ':/home/jjdai/work/zhupiter/php-

Following an example of compiling in the Gun/linux Programming Guide, the resulting error follows: Undefined reference to ' pthread_create 'Undefined reference to ' Pthread_join ' Problem Reason:The Pthread library is not the default library of

Problem:The program model is written in C + + language, and an interface file Modelc.cpp is added between the program model and the call function, which is used to call the function in the program model with C language program. A new addition of

Undefined reference to ' pthread_create ' Undefined reference to ' Pthread_join ' Problem Reason: The Pthread library is not the default library of the Linux system, which requires the use of a static library libpthread.a, so that when you create

The following error message appears when the program is being debugged under Ubuntu system today:[Ten%]linking CXX executable. /test_coco/usr/local/lib/libgsl.so:undefined reference to ' CBLAS_ZTRSV'/usr/local/lib/libgsl.so:undefined reference to '

C + + calls library functions, if the header file is not properly defined, there may be clearly a function in the obj file exists, but the link failed, the following error occurred: Undefined reference to ' xxx ' The problem occurs because the C

The undefined reference to ' sin ' error occurs when compiling a C program with a mathematical function using the GCC compiler. This error is generally caused by a lack of libraries. As a small program in the above diagram, the following problems

1. vcs_save_restore_new.o: Relocation r_x86_64_32s [Ubuntu 18.04] $ Vcshome/linux64/lib/vcs_save_restore_new.o: Relocation r_x86_64_32s against undefined symbol' _ sigintr 'can not be used when making a pie object; recompile with-FPIC /Usr/bin/ld:

Download the qt-sdk-linux-x86-opensource-2009.02.bin, after installing in RedHat Linux As5, you can start QT creator normally. However, when compiling the example program that comes with QT, The Link error is found:

When using C + + programming, sometimes to use the third-party library, and the first party libraries is given in C, it is strange that the C file has been added to the project, the header file has been introduced, the compilation still

The following error occurred when compiling the COCOS2DX project using Cocos compile-p Android (New Testscene.h,testscene.cpp):jni/. /.. /classes/appdelegate. cpp:testscene::createscene ()'clang1 (Use- V to see invocation)make1make. exe:leaving

GCC says: Undefined reference to 'std: cout' @ 10/17/2005Computing lifeThe program written by the boss should be run in Linux and Windows. As a result, I first wrote it through vs.net and then compiled it under GCC. This error occurs on N screens.

This error message is too common. If you have used QT for more than two months, you can solve it yourself. It is too classic and can be used for reference by new users. The error message is generally similar to: Undefined reference to 'vtable for

to add-lpthread or-pthread parameters in the compilation (different versions of GCC may not be the same, man GCC can refer to the corresponding parameters).For example, to execute the PTHREAD.C file after adding the header file # include , you need

g++ compiles a program g++ Shm.c-o SHM,With the Shm_open (), Shm_unlink () function, the following error has occurred in compiling:`del_resource()‘`shm_unlink‘`main‘`shm_open‘collect2: error: ld returned 1 exit statusLater through the Shm_open ()

Today, when writing a program with code::blocks, undefined reference to ' [email protected] linker this error.Workaround 1: Right-click the project-->properties pop-up project/targets Options dialog box and select Project ' Build Options ' in

Solve a small problem with compilation in Cocos2d-xfor Cocos2d-x 2.x in the compilation, if the header file introduced the # include "Cocos-ext.h", in the C + + compilation will encounter the following error: Undefined reference to symbol ' [email