[libc++abi] Don't re-define _LIBCPP_HAS_NO_THREADS in single-threaded mode
authorLouis Dionne <ldionne.2@gmail.com>
Wed, 17 Nov 2021 15:49:53 +0000 (10:49 -0500)
committerLouis Dionne <ldionne.2@gmail.com>
Wed, 17 Nov 2021 15:59:39 +0000 (10:59 -0500)
commitea23cc7120af81f52c50e1008127501da5ca63f3
tree8d680bff7e5b1f8ac302291cb2975b5c7db341e4
parent76313f8ec9fc79e68eb1880b16c111a5cbfa60a9
[libc++abi] Don't re-define _LIBCPP_HAS_NO_THREADS in single-threaded mode

Libc++ already defines the macro inside its __config_site header, so
libc++abi doesn't need to do it. Doing it just leads to -Wmacro-redefined
warnings when building libc++abi.
libcxxabi/CMakeLists.txt