Re: Issues when building libcxx libcxxabi with MUSL

[Julien Ramseier <j.ramseier@gmail.com>]

Hi Zhao,

Not sure how you did build llvm-libcxx, but the only issue I encountered myself is
the use of PTHREAD_MUTEX_INITIALIZER in libcxx include/__mutex_base.
musl uses volatile types in its pthread_mutex_t struct and C++11 does not allow them
with constexpr member initializers. This rule has been relaxed in C++14.

Julien

> Le 22 juin 2016 à 21:24, Zhao, Weiming <weimingz@codeaurora.org> a écrit :
> 
> Hi,
> 
> I tried to build libcxx/libcxxabi using MUSL. Compiler is clang.
> 
> The build issues I got:
> 
> 1) In libcxx, it complains that some pthread structure is not completely initialized.
> 
> 2) Some types like max_align_t are already defined in clang's include.
> 
> 3) libcxx can't find it's own math.h
> 
> A patch is attached. Please review if the changes are correct.
> 
> 
> Thank,
> 
> Weiming
> 
> 
> 
> 
> -- 
> Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
> 
> <build_libcxx.patch>