What is the solution to build with clang when it fails: fatal error: 'quadmath.h' file not found ?

[Thierry Thomas]

Le ven. 20 déc. 19 à 23:07:59 +0100, Yuri <yuri at rawbw.com>
 écrivait :

> Is 'quadmath.h' just not available through clang and GCC should be 
> always used instead?

Please see this issue:
https://github.com/boostorg/math/issues/181

The missing part should be adressed by clang.
-- 
Th. Thomas.