Hashimoto Yuya <hill_climb@xxxxxxxxxxx> writes: > Thank you very much for your reply. > >> To the best of my knowledge, current versions are GPL3 and earlier >> ones GPL2. Perhaps really early version had other licenses. The >> libraries are released under LGPL, so you can use gcc to build closed >> source applications. > > Does this mean that it's possible to use gcc to build closed source > applications, regardless of the version of gcc? Yes. > The reason why I asked about license information is that I want to use gcc > to build application whose source I want to keep closed, and I thought that > gcc was protected under different kind of license depending on its version. > For instance, 3.x is protected under LGPL, and 4.x is protected under GPL, > etc. That is incorrect. gcc has always been under the plain GPL. It has always been possible to use gcc to build proprietary applications. Of course gcc is only a compiler, and is only one part of what you need to build an application. glibc, for example, is under the LGPL. Ian