Richard Stallman Calls LLVM A "Terrible Setback"
In the days since Eric S. Raymond had some choice words about GCC vs. Clang, the bickering and fighting over GCC vs. Clang compilers has continued. Richard M. Stallman has come out this morning on the Free Software Foundation's mailing list with his views to reiterate.
Richard Stallman's views aren't anything too surprising in this GCC vs. Clang debate but he wrote:
In the free software movement, we campaign for the freedom of the users of computing. The values of free software are fundamentally different from the values of open source, which make "better code" the ultimate goal. If GCC were to change from a free compiler into a platform for nonfree compilers, it would no longer serve the goal of freedom very well. Therefore, we had to take care to prevent that.So while the Clang C/C++ compiler is nearly running at the same speed as GCC and has also spawned many interesting projects with its interesting modular compiler infrastructure design like Gallium3D LLVMpipe, other LLVM GPU back-ends, various language front-ends, OpenCL support, EmScripten for compiling to the web, disassembly/decompilers, and countless other interesting open-source projects that build upon LLVM, RMS says "the existence of LLVM is a terrible setback for our community precisely because it is not copylefted and can be used as the basis for nonfree compilers." LLVM is under a BSD-style license while modern GCC releases are GPLv3.
You can read the rest of Stallman's comments with this mailing list post.
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