tree 2393bc7070f6fbc8c21bf9fb63a80bf64bc60e64
parent e15a6a6a34cf740fcb3e2052764e94716e8f6a1c
author Zbigniew Sarbinowski <zibi@ca.ibm.com> 1613498542 +0000
committer Copybara-Service <copybara-worker@google.com> 1613725708 -0800

[SystemZ][ZOS] Prefer -nostdlib++ as opposed to -nodefaultlibs when building c++ libraries

Let's use -nostdlib++ rather than -nodefaultlibs when building libc++/libc++abi/libunwind libraries. The default is -nostdlib++ if supported by a build compiler like it is the case with clang, otherwise -nodefaultlibs is used as before.

This change is needed to avoid additional changes at the link step and not to increase the maintenance costs. If clang with -nodefaultlibs is used all the libraries which are removed but required would have to be manually added in. This set of libraries are unique and will send out.

The propose change will allow to make the link step simple for other platforms as well.

Reviewed By: #libc, #libc_abi, ldionne

Differential Revision: https://reviews.llvm.org/D95875

GitOrigin-RevId: 5f9be2c3e37c0428ba56876dd84af04b8d9d8915