linker-flags

I'm using CMake for a project that comes in two versions, one of which requires -lglapi and the other does not. So far the lines we used look like that: SET(CMAKE_C_FLAGS "-O3 -xSSE3 -restrict -lpthread -lX11 -ldrm") SET(CMAKE_CXX_FLAGS "-O3 -xSSE3 -restrict -lpthread -lX11 -ldrm") I added an if statement in my CMakeList.txt exactly after those lines: if(SINGLE_MODE) SET(CMAKE_C_FLAGS ${CMAKE_C_FLAGS} " -lglapi") SET(CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS} " -lglapi") endif(SINGLE_MODE) The SINGLE_MODE variable is defined a little up. When I use the message command to display the content of the

How can I tell the linker of g++ to allow multiple definitions of symbols (choose the first appearance)? -z multidefs Allows multiple symbol definitions. By default, multiple symbol definitions occurring between relocatable objects (.o files) will result in a fatal error condition. This option suppresses the error condition and allows the first symbol definition to be taken. This option is valid only when the -b svr4 option is specified. The -zmuldefs option is not recognized by g++ , nor -z OPTION . What's the correct parameter? Is it possible? There is no such thing as the "linker of g++",

What are the ".map" files generated by gcc/g++ linker option "-Map" used for ? And how to read them ? I recommend generating a map file and keeping a copy for any software you put into production. It can be useful for deciphering crash reports. Depending on the system, you likely can get a stack dump from the crash. The stack dump will include memory addresses and one of the registers will include the Instruction Pointer. That tells you the memory address code was executing at. On some systems, code addresses can be moved around (when loading dynamic libraries, hence, dynamic), but the lower

I can't find this anywhere. I've installed json-spirit on my ubuntu server with apt-get install json-spirit-dev . What linker flag has to be used with g++ to use json-spirit? The only library listed in that package is called libjson_spirit.a . You can link with it by adding -ljson_spirit to your linker step. 来源： https://stackoverflow.com/questions/17437893/what-is-the-json-spirit-linker-flag-for-g

I am building a shared library in C that is dynamically loaded by a program that I do not have source access to. The target platform is a 64-bit Linux platform and we're using gcc to build. I was able to build a reproduction of the issue in ~100 lines, but it's still a bit to read. Hopefully it's illustrative. The core issue is I have two non-static functions ( bar and baz ) defined in my shared library. Both need to be non-static as we expect the caller to be able to dlsym them. Additionally, baz calls bar . The program that is using my library also has a function named bar , which wouldn't