[compiler-rt] [compiler-rt][test] Apply CFLAGS from sanitizer_common to all tests (PR #120798)

[Aaron Puchert via llvm-commits]

aaronpuchert wrote:

Sorry, I must have overlooked it. The log has `--sysroot`.

But is that from `CMAKE_SYSROOT`? Then I wonder where "undefined reference to" is coming from, since the runtime should have been build against the same sysroot.

https://github.com/llvm/llvm-project/pull/120798