[llvm-dev] Is GCC 4.7 still supported?

[Michael Kruse via llvm-dev]

There was a thread last week[1] when someone also noticed that LLVM
doesn't compile with gcc 4.7 anymore. It turned out that it didn't for
3 months already, as there are no more buildbots testing compilation
with gcc 4.7.

Therefore there was a discussion to raise the minimum required version
to 4.8 [2]

[1] http://lists.llvm.org/pipermail/llvm-dev/2016-October/105742.html
[2] http://lists.llvm.org/pipermail/llvm-dev/2016-October/105955.html

Michael

2016-10-17 12:19 GMT+02:00 Artyom Skrobov via llvm-dev
<llvm-dev at lists.llvm.org>:
> Hello,
>
> http://llvm.org/docs/GettingStarted.html#software lists "GCC >=4.7.0" among requirements for building LLVM.
> However, my attempt of building LLVM+Clang with gcc 4.7.3 has failed with a multitude of errors, such as:
>
> lib/LTO/Caching.cpp:74:7: error: looser throw specifier for 'virtual llvm::lto::localCache(std::string, llvm::lto::AddFileFn)::<lambda(unsigned int, llvm::StringRef)>::CacheStream::~CacheStream()'
> In file included from LTO/Caching.h:18:0,
>                  from LTO/Caching.cpp:14:
> LTO/LTO.h:271:11: error:   overriding 'virtual llvm::lto::NativeObjectStream::~NativeObjectStream() noexcept (true)'
>
> tools/clang/include/clang/Analysis/CFG.h:998:38: error: '<::' cannot begin a template-argument list [-fpermissive]
> tools/clang/include/clang/Analysis/CFG.h:998:38: note: '<:' is an alternate spelling for '['. Insert whitespace between '<' and '::'
> tools/clang/include/clang/Analysis/CFG.h:998:38: note: (if you use '-fpermissive' G++ will accept your code)
>
>
> Either the docs or the makefiles need fixing; so, which is correct and which is wrong?
> If no one else has been building LLVM with GCC 4.7 recently, does that mean that nobody cares about 4.7, and therefore it's unsupported?
>
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