So, no matter what I seem to do, I cannot seem to avoid having Dev C++ spew out numerous Multiple Definition errors as a result of me including the same header file in multiple source code files in the same project. I'd strongly prefer to avoid having to dump all my source code into one file and only include the header once, as that's g...
I'm a C newbie and I was just trying to write a console application with Code::Blocks. Here's the (simplified) code: main.c: #include <stdio.h> #include <stdlib.h> #include "test.c" // include not necessary for error in Code::Blocks int main() { //t = test(); // calling of method also not necessary return 0; } test.c: void t...
I have a programme I which I want to implement button class. I have declared all my variable in button.h and defined all methods in button.cpp and I am calling these functions in WINMAIN the following error appears. keylogger.obj : error LNK2005: "struct HBITMAP__ * hOldBmp" (?hOldBmp@@3PAUHBITMAP__@@A) already defined in Button.obj Th...
vector is included in only one source file. The only stl include in the header files is string. Yet I cannot get rid of multiple definition errors (example below). Any ideas? ./plugin_dfb.o:mipsel-linux-uclibc/include/c++/4.2.0/bits/stl_bvector.h:182: multiple definition of `std::operator-(std::_Bit_iterator_base const&, std::_Bit_itera...
I am trying to integrate some external code into my application. My code was pure C, but the new code is C++, so I simply renamed my C files to .cc and compiled the whole thing with g++. It compiles fine, but I get a crapton of link errors : CMakeFiles/svrt.dir/svrtH_generator.cc.o: In function `operator new(unsigned long, void*)': svr...
I have a C++ program that I compile with mingw (gcc for Windows). Using the TDM release of mingw which includes gcc 4.4.1. The executable links to two static library (.a) files: On of them is a third-party library written in C; the other is a C++ library, written by me, that uses the C library provides my own C++ API on top. An (in m...
Starting with sth's answer to this question: http://stackoverflow.com/questions/3023760/c-template-specialization I was wondering how to resolve multiple definition errors if the following code is put in a header file included multiple times by different .cc files and linked together: template <typename T> class C { static const ...
So my program is working fine. Compiling, linking, running, the works. Then, I decide to add a simple function to one of my files, like this: #ifndef UTILITY_HPP #define UTILITY_HPP /* #includes here. There's no circular include, I've checked. */ namespace yarl { namespace utility { (several function declarations an...
The linker is reporting multiply defined errors for an inline function. I have the following code in a header file: struct Port_Pin { volatile uint32_t * port_addr_set_value; //!< Writing the pin value here sets the pin to high. volatile uint32_t * port_addr_clr_value; //!< Writing the pin value to this port clear...
I want to write a library that to use, you only need to include one header file. However, if you have multiple source files and include the header in both, you'll get multiple definition errors, because the library is both declared and defined in the header. I have seen header-only libraries, in Boost I think. How did they do that? ...