linker-errors

Why am I getting the following linker error when using clang with libc++: $ clang++ -stdlib=libc++ po.cxx -lpoppler /tmp/po-QqlXGY.o: In function `main': po.cxx:(.text+0x33): undefined reference to `Dict::lookup(char*, Object*, std::__1::set<int, std::__1::less<int>, std::__1::allocator<int> >*)' clang: error: linker command failed with exit code 1 (use -v to see invocation) Where: $ nm -D /usr/lib/x86_64-linux-gnu/libpoppler.so | grep lookup | c++filt| grep \ Dict::lookup\( 00000000000c1870 T Dict::lookup(char*, Object*, std::set<int, std::less<int>, std::allocator<int> >*) Code is simply:

I am receiving the following linker error when I build my application. HIMyClass.obj:: error: unresolved external symbol "public: virtual struct QMetaObject const * __thiscall CHIMyClass::metaObject(void)const " (?metaObject@CHIMyClass@@UBEPBUQMetaObject@@XZ) File not found : HIMyClass.obj HIMyClass.obj:: error: unresolved external symbol "public: virtual void * __thiscall CHIMyClass::qt_metacast(char const *)" (?qt_metacast@CHIMyClass@@UAEPAXPBD@Z) File not found : HIMyClass.obj HIMyClass.obj:: error: unresolved external symbol "public: virtual int __thiscall CHIMyClass::qt_metacall(enum

I am working with Visual Studio 2012. My Solution has 3 projects projectA projectB projectC and the Hierarchy is like projectC depends on projectB which in turn depend on projectA . There is a main function in projectC and no main in projectB and projectA. The errors that i am getting are: error LNK1561: entry point must be defined projectA error LNK1561: entry point must be defined projectB I have tried changing in the Configuration Properties -> Linker -> System -> SubSystem to Console (/SUBSYSTEM:CONSOLE) But the problem still persists Help me out of this. Spook It seems, that you

I have installed Rust on windows from Rust installation page . After installation I tried running the "hello world" program but got the following error. >cargo run Error Compiling helloworld v0.1.0 (C:\Users\DELL\helloworld) error: linker `link.exe` not found note: The system cannot find the file specified. (os error 2) note: the msvc targets depend on the msvc linker but `link.exe` was not found note: please ensure that VS 2013, VS 2015 or VS 2017 was installed with the Visual C++ option error: aborting due to previous error error: Could not compile `helloworld`. To learn more, run the

I am writing my program in Visual Studio 2010. I am unable to link a file named ws2_32.dll with my project. Can anyone tell me how I can do that? Typically you dont link to ws2_32.dll directly but to WS2_32.Lib, which you can find in the Windows SDK. So in your code you write #include <winsock2.h> and to your linker-settings you add WS2_32.Lib and you're good to go. The Windows SDK is here: http://msdn.microsoft.com/en-us/windows/bb980924.aspx The first order of business is importing the header file that defines functions exported by ws2_32.dll . You do that by adding the following statement

I have added libpng to my application. If I build for simulator, everything is OK. When I build application for device, I got linker error: Undefined symbols for architecture armv7: "_png_init_filter_functions_neon", referenced from: _png_read_filter_row in libpng-arm7-release.a(pngrutil.o) I have build libpng manually from source, same way for simulator and device (only with changed target of compilation). I have tried to find this problem, but noone seems to post anything about this problem. I "solved" this by replacing lines 117-121 in libpng 's pngpriv.h : # ifdef __ARM_NEON__ # define PNG

My build fails with the following linker error message: FAILED: : && /usr/bin/g++ -Wall -Wextra -Werror -g -fsanitize=undefined,address -Wno-unused-parameter -fsanitize=undefined,address -rdynamic *.o -o SCE -Wl,-rpath,/opt/qt59/lib /opt/qt59/lib/libQt5Widgets.so.5.9.1 /usr/local/lib/libprotobuf.a -lpthread -lutil -lgrpc++ /opt/qt59/lib/libQt5Gui.so.5.9.1 /opt/qt59/lib/libQt5Core.so.5.9.1 && : /usr/bin/x86_64-linux-gnu-ld: unrecognized option '--push-state--no-as-needed' You can see the full build log here . The error is in line 2211 and versions are printed in lines 2104ff. Which tool causes

I get this error at the linker stage when compiling the webkit-1.1.5 package on my Ubuntu 9.04 box: libtool: link: gcc -ansi -fno-strict-aliasing -O2 -Wall -W -Wcast-align -Wchar-subscripts -Wreturn-type -Wformat -Wformat-security -Wno-format-y2k -Wundef -Wmissing-format-attribute -Wpointer-arith -Wwrite-strings -Wno-unused-parameter -Wno-parentheses -fno-exceptions -fvisibility=hidden -D_REENTRANT -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/directfb -I/usr

I have Eclipse Juno and Force.com IDE. When I try to create new classes they always show: failed to create the part's controls . It worked for the first time, but now they always show this. Same happens if I create them inside the force.com platform. Error details: org.eclipse.core.runtime.AssertionFailedException: assertion failed: at org.eclipse.core.runtime.Assert.isTrue(Assert.java:110) etc ... I would appreciate all help. I had the same error. I fixed it by switching the eclipse workspace. Go to menu File->Switch Workspace->Other, and then select the same workspace you were working with.