Is the JVM launched if an unused class is absent?

Consider the program: public class Test { public static void main(String[] args) { if (Arrays.asList(args).contains("--withFoo")) { use(new Foo()); } } static void use(Foo foo) { // do something with foo } } Is Foo required in the runtime classp

SDL2 link errors in my project

I used CMake and Code::Blocks to build SDL2 from source, and attempted to link my own project source to the following static libraries: libSDL2.a libSDL2main.a OpenGL32.lib These three libraries are contained within the directory known as %libdir% (I

Cocoapods link error when I added it to my project

i'm using cocoapods for the first time and after everything goes well i get to run my project that was always wor˚ and got those 2 errors in lin˚er can anyone please tell me what is it than˚s Undefined symbols for architecture armv7: "_OBJC_CLASS_$_P

ParseCrashReporting iOS linker error

I was trying to enable parse crash reporting. However there is always linker error when compiling. I have tried the method in other thread, like adding libstdc++6.0.9 other than libstdc++6. The error message is: Ld /Users/Peter/Library/Developer/Xcod

Can not fix link error in C ++

I am working on a project which is very new to me. I have a very basic knowledge of C++ and I am just unable to fix a linker error that I am getting while trying to build the project in VC++. Following is the error and definitions of 2 classes involv

Is the adMob link -ObjC flag needed?

The reason I'm asking is it builds fine without the flag. But if I do add the flag, it throws a bunch of errors: Undefined symbols for architecture x86_64: "_ACAccountTypeIdentifierTwitter", referenced from: -[PF_Twitter getLocalTwitterAccountAs

Compile error gcc reference not set to `aes256_init '

I tried compiling using gcc it gives me $ gcc demo.c -o samp.o /tmp/cclnweNC.o: In function `main': demo.c:(.text+0x12b): undefined reference to `aes256_init' demo.c:(.text+0x142): undefined reference to `aes256_encrypt_ecb' demo.c:(.text+0x1b2): und

(Objective-) C ++ Duplicate symbol on template specialization

Okay, I've been struggling with this weird error since yesterday, so I guess it's time to ask the community... I'm currently working in Objective-C++, and I have a purely C++ class declaration in a header file like this: #ifndef __MATRIX_H__ #define

Multiple definition of & hellip; link error

I defined a special file: config.h My project also has files: t.c, t.h pp.c, pp.h b.c b.h l.cpp and #includes: in t.c: #include "t.h" #include "b.h" #include "pp.h" #include "config.h" in b.c: #include "b.h&quo


I am trying to a "File Save As" programming code inside MFC Application. in my TestDlg.h header file i have got public: BOOL SaveFile (LPCTSTR pszFile); CString m_strPathName; And in my TestDlg.cpp CPP file I have got void CTESTDlg::OnSaveFile()

Error Not Listed in C ++ Linker in Singleton Class

This question already has an answer here: C++: Undefined reference to instance in Singleton class 5 answers I'm trying to port this java singleton class to c++: public class Singleton { private static Singleton uniqueInstance; private Singleton() {}

ERROR LNK2019: unresolved external symbol, c ++

This question already has an answer here: How to fix undefined reference/unresolved external symbol error 27 answers Why can templates only be implemented in the header file? 13 answers Why do I get "unresolved external symbol" errors when using

Order the beginning of the file class from the command line

I created the project in NetBeans (according to the book P. Noutona, G. Shildta "Java2. The fullest management"), having specified as an Example2 project name. /* * To change this template, choose Tools | Templates * and open the template in the

GLSL will not accept my implicit distribution

I'm learning OpenGL 3.3, using some tutorials ( In the tutorial I'm using, there is a vertex shader which does the following: Tutorial Shader source #version 330 core // Input vertex data, different for all executions of t

LNK1104 Error in Visual C ++ 2010

I keep getting this comiler error. Compiling was working and then just suddenly stopped and is giving me this error and warning: 1>C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\Microsoft.CppClean.targets(74,5): warning : Access to the path 'C:\Us

Eclipse: Do not notice Error during class import failure

This below image is my eclipse of my two different projects. And each black rectangle is a package in folder src of Eclipse project. As you know, there a different point: The icon of each package is different. 1) first project: package has normal ico

RestKit Linker error

I have been following the RestKit installation instructions but I now have an error when I try to build the app. This is for ios, iPad specific. I get "Command /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/clang failed with exit cod

& ldquo; error LNK2001: external symbol unresolved & rdquo;

This question already has an answer here: What is an undefined reference/unresolved external symbol error and how do I fix it? 27 answers I have a problem with my program in VC++ 2008. When I compile it, the following errors are listed. I spent a lot

Cross Compiling Qt for Embedded Arm: not found

I am trying to cross compile Qt with WebKit for an embedded arm device (freescale processor). I have a arm-none-linux-gnueabi toolchain. Qt actually compiled, but I have run into problems when trying to compile the demos, in particular the WebKit one

Extracting text from pdf using objective-c (libz.dylib)

I have imported the pdf.h file in my view controller class and tried calling NSString *outPutString = convertPDF(pathToPdfFile); but while building it gives me linker error: _convertPDF" refrenced from: -[ScriptViewController searchBarSearchButtonCli

Link error with pointers

I am trying to build a program to Tolkinize a string (i'm trying to do this with out using the string class - so as to learn more about pointers and how chars work) - I have built a program that i think works (any suggestions would be great!) When i

IPhone library: the file is not required architecture

I have searched for hours however I still have no clue what is wrong with my configuration. My project uses a self-written libray (myLib). This library is compiled to work only for simulator and it works perfectly there. What do have to change so it