Siva Chandra Reddy 4f9c10eb48 [libc] Add support for standalone cross compilation of libc. ...

One should be able to do a cross build of the libc now. For example, using
clang on a x86_64 linux host, one can build for an aarch64 linux target by
specifying -DLIBC_TARGET_TRIPLE=aarch64-linux-gnu.

Follow up changes will add a baremetal config and also appropriate
documentation about cross compiling the libc for CPU targets.

Reviewed By: jhuber6

Differential Revision: https://reviews.llvm.org/D140351

2022-12-20 00:33:35 +00:00

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