linker-errors

问题 I have a static library, liborc-0.4.a with no shared library. I have another library, libschroedinger-1.0.a (no shared) that depends on symbols in liborc-0.4.a. If I run nm on liborc-0.4.a, symbols such as orc_init show up as T (meaning they are defined). I built libschroedinger-1.0.a with the command line flag -lorc-0.4 so it saw the symbols and was ok. However, now I have a small executable that depends on libschroedinger-1.0.a. It compiles fine, but when I run the linker gcc -lschroedinger

问题 I am using SIFT algorithm code by Rob Hess which uses OpenCV library, in Windows. And I am having visual studio 2008 as the IDE. When I run the program for image matching having Debug as the Solution Configuration in VS There is no problem, everything works fine. But when i change the Solution Configuration to Release it gives a linking error. The error is: Linking... LINK : fatal error LNK1181: cannot open input file 'libgsl.a' Can someone explain me the reason and tell me how to resolve

问题 I am using SIFT algorithm code by Rob Hess which uses OpenCV library, in Windows. And I am having visual studio 2008 as the IDE. When I run the program for image matching having Debug as the Solution Configuration in VS There is no problem, everything works fine. But when i change the Solution Configuration to Release it gives a linking error. The error is: Linking... LINK : fatal error LNK1181: cannot open input file 'libgsl.a' Can someone explain me the reason and tell me how to resolve

问题 I'm integrating 3rd party code into my MFC app under Visual Studio 2010. When in Debug mode the following build error occurs: 1>LIBCMT.lib(invarg.obj) : error LNK2005: __initp_misc_invarg already defined in libcmtd.lib(invarg.obj) 1>LIBCMT.lib(invarg.obj) : error LNK2005: __call_reportfault already defined in libcmtd.lib(invarg.obj) 1>LIBCMT.lib(invarg.obj) : error LNK2005: __set_invalid_parameter_handler already defined in libcmtd.lib(invarg.obj) 1>LIBCMT.lib(invarg.obj) : error LNK2005: _

问题 I'm integrating 3rd party code into my MFC app under Visual Studio 2010. When in Debug mode the following build error occurs: 1>LIBCMT.lib(invarg.obj) : error LNK2005: __initp_misc_invarg already defined in libcmtd.lib(invarg.obj) 1>LIBCMT.lib(invarg.obj) : error LNK2005: __call_reportfault already defined in libcmtd.lib(invarg.obj) 1>LIBCMT.lib(invarg.obj) : error LNK2005: __set_invalid_parameter_handler already defined in libcmtd.lib(invarg.obj) 1>LIBCMT.lib(invarg.obj) : error LNK2005: _

问题 I'm working on MacOSX 10.7.2 and Xcode 4.2.1. I installed libpng using port and I was trying to load a PNG image in my application, but I get linker errors: Undefined symbols for architecture x86_64: "_png_create_read_struct", referenced from: loadPngImage(char*, int&, int&, bool&, unsigned char**) in test.o "_png_create_info_struct", referenced from: loadPngImage(char*, int&, int&, bool&, unsigned char**) in test.o "_png_destroy_read_struct", referenced from: loadPngImage(char*, int&, int&,

问题 Having trouble getting unit tests set up for a specific scenario. Here's what I'm trying: In Xcode 4.5, I created a simple OSX "Command Line Tool" application project (Foundation). Note that Xcode does not provide the option to add unit tests to a "Command Line Tool" project automatically – so please don't suggest ticking the ticky-box; it ain't there :-/ In my project, I created a trivial example class that I'd like to test; e.g. "Shape". I followed instructions in Apple's Xcode Unit Testing

问题 I'm trying to add the Google Conversion Tracking for iOS feature to my iPhone app. The app's base SDK is iOS6 the app's valid architectures is armv7, armv7s the app's iOS deployment targer is 4.3 I'm using the latest xcode 4.5.2 and OSX 10.8.2 The app is in appstore and is ok for iPhone 3-4-5 When I try to add the Google Conversion Tracking for iOS following this link: https://developers.google.com/mobile-ads-sdk/docs/admob/conversion-tracking I have this error: Undefined symbols for

问题 I'm trying to make a file in Ubuntu and when i make i keep getting this error: /usr/bin/ld: ../../gtest-1.7.0/libgtest.a(gtest-all.cc.o): undefined reference to symbol 'pthread_key_delete@@GLIBC_2.2.5' /lib/x86_64-linux-gnu/libpthread.so.0: error adding symbols: DSO missing from command line collect2: error: ld returned 1 exit status make[2]: *** [src/tests/run_tests] Error 1 make[1]: *** [src/tests/CMakeFiles/run_tests.dir/all] Error 2 make: *** [all] Error 2 I saw someone mentioning to go

问题 I am following along with the book "Introduction to 3D Game Programming with DirectX11" by Frank D. Luna. And I am getting these errors when I try and build my project. >BoxDemo.obj : error LNK2019: unresolved external symbol _D3DX11CompileFromFileW@44 referenced in function "private: void __thiscall BoxApp::BuildFX(void)" (?BuildFX@BoxApp@@AAEXXZ) >BoxDemo.obj : error LNK2019: unresolved external symbol _D3DX11CreateEffectFromMemory@20 referenced in function "private: void __thiscall BoxApp: