libpthread.so.0: error adding symbols: DSO missing from command line

You should mention the library on the command line after the object files being compiled: Explanation: the linking is dependent on the order of modules. Symbols are first requested, and then linked in from a library that has them. So you have to specify modules that use libraries first, and libraries after them. Like this: Moreover, in … Read more

How do I install gcc on cygwin?

Ok. You should launch the installer of cygwin setup-x86_64.exe (if you have deleted it from your computer than just download it from https://cygwin.com/install.html). In the Cygwin Setup dialog window just press Next, and press Next again. In dialog “Cygwin Setup – Choose Installation Directory” you should select root directory in wich CygWin has been installed & … Read more

How does #include work in C++?

It is basically a header file that also includes every standard library and STL include file. The only purpose I can see for it would be for testing and education. Se e.g. GCC 4.8.0 /bits/stdc++.h source. Using it would include a lot of unnecessary stuff and increases compilation time. Edit: As Neil says, it’s an implementation for … Read more