[llvm-dev] GCC prerequisites for building LLVM head?

Martin J. O'Riordan via llvm-dev llvm-dev at lists.llvm.org
Wed Jul 6 11:02:21 PDT 2016

Sorry for the delay, I had to experiment and build everything to be sure.

I am actually getting the same problem with GCC v4.9.3 on CentOS, but for both Cygwin and Linux adding '-D_GLIBCXX_USE_C99' to the '-DCMAKE_CXX_FLAGS:STRING=' flag during configuration cured the problem.


-----Original Message-----
From: Renato Golin [mailto:renato.golin at linaro.org] 
Sent: 06 July 2016 11:10
To: Martin.ORiordan at movidius.com
Cc: LLVM Developers <llvm-dev at lists.llvm.org>
Subject: Re: [llvm-dev] GCC prerequisites for building LLVM head?

On 6 July 2016 at 11:04, Martin J. O'Riordan <martin.oriordan at movidius.com> wrote:
> Perhaps it is a broken Cygwin v4.9.3 package, but this is odd since the source should be identical for the Cygwin versus Linux distros?

Looks like a broken package. I don't know how Cygwin builds their own packages, but I wouldn't be surprised if they have their own convoluted build system that hacks stuff together, like every other distribution. :)

We do test it on large number of Linux distributions, on ARM, AArch64 and x86_64, and we have found no problems at all with 4.8 or 4.9.


More information about the llvm-dev mailing list