linker

问题 I know there are several other questions here regarding the Linker and Xcode 4, but they don't really relate to my problem. I've built Allegro 5.1 and it took me a while because of FreeType, but eventually it worked. Now I've written a little Space Invader game using Allegro. But somehow the linker can't find the framework. What I've done so far: The Frameworks are located at /Library/Frameworks/ and they have the same structure like all the other frameworks in that place I've added the

问题 I have a number of static libraries which I link together into one shared library. One of them, say libUsefulFunc.a contains an object file usefulFunc.o with a function, usefulFunc() that is only used from another static library, let's say usingFunc(), residing in usingFunc.c hosted in libUsingFunc.a The problem is that the linker throws away the usefulFunc.o and I get error " undefined reference ". I tried both orders of linking. I've recreated the situation using the simplest files I could

问题 On OS X (clang), during linkage stage, a symbol ( boost::filesystem::portable_posix_name ) in my code is not being found. Here is a brief code snippet that contains the function I am calling in my code: if (boost::filesystem::is_directory(settings.parent_path()) && boost::filesystem::portable_posix_name(settings.filename().string())) { ... } (Please let me know if more context in my code snippet is required.) The linker command line, used when the program compiles and links, contains the

问题 I'm trying to compile a simple Hello World program in C++ but I keep getting the following error...why? gcc -o HelloWorldCompiled HelloWorld.cc /tmp/ccvLW1ei.o: In function `main': HelloWorld.cc:(.text+0xa): undefined reference to `std::cout' HelloWorld.cc:(.text+0xf): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)' /tmp/ccvLW1ei.o: In function `__static

问题 I'm trying to compile a simple Hello World program in C++ but I keep getting the following error...why? gcc -o HelloWorldCompiled HelloWorld.cc /tmp/ccvLW1ei.o: In function `main': HelloWorld.cc:(.text+0xa): undefined reference to `std::cout' HelloWorld.cc:(.text+0xf): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)' /tmp/ccvLW1ei.o: In function `__static

问题 I came across an interesting error when I was trying to link to an MSVC-compiled library using MinGW while working in Qt Creator. The linker complained of a missing symbol that went like _imp_FunctionName . When I realized That it was due to a missing extern "C", and fixed it, I also ran the MSVC compiler with /FAcs to see what the symbols are. Turns out, it was __imp_FunctionName (which is also the way I've read on MSDN and quite a few guru bloggers' sites). I'm thoroughly confused about how

问题 I came across an interesting error when I was trying to link to an MSVC-compiled library using MinGW while working in Qt Creator. The linker complained of a missing symbol that went like _imp_FunctionName . When I realized That it was due to a missing extern "C", and fixed it, I also ran the MSVC compiler with /FAcs to see what the symbols are. Turns out, it was __imp_FunctionName (which is also the way I've read on MSDN and quite a few guru bloggers' sites). I'm thoroughly confused about how

问题 I'm making a hello world program in assembly language with NASM on 32-bit Windows 7 . My code is: section .text global main ;must be declared for linker (ld) main: ;tells linker entry point mov edx,len ;message length mov ecx,msg ;message to write mov ebx,1 ;file descriptor (stdout) mov eax,4 ;system call number (sys_write) int 0x80 ;call kernel mov eax,1 ;system call number (sys_exit) int 0x80 ;call kernel section .data msg db 'Hello, world!', 0xa ;our dear string len equ $ - msg ;length of

问题 I'm making a hello world program in assembly language with NASM on 32-bit Windows 7 . My code is: section .text global main ;must be declared for linker (ld) main: ;tells linker entry point mov edx,len ;message length mov ecx,msg ;message to write mov ebx,1 ;file descriptor (stdout) mov eax,4 ;system call number (sys_write) int 0x80 ;call kernel mov eax,1 ;system call number (sys_exit) int 0x80 ;call kernel section .data msg db 'Hello, world!', 0xa ;our dear string len equ $ - msg ;length of

问题 Suppose I have two source files — UndefErr.cpp : #include <cstdio> void UndefFunc(); void Func2(){UndefFunc();} void Func1(){printf("Hi\n");} And the main.cpp : void Func1(); int main(){ Func1(); return 0; } As you see in the UndefErr.cpp the Func2() going to trigger an error, for it using the undefined UndefFunc() . However the main function doesn't care about the Func2() ! According to a relevant question I could pass an option --unresolved-symbols=ignore-in-object-files to the linker, but