[llvm] [libc][bazel] Add bazel targets for libc/include/... tests. (PR #141150)

[Alexey Samsonov via llvm-commits]

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@@ -71,6 +71,7 @@ libc_test_library(
         "//libc:llvm_libc_macros_stdfix_macros",
         "//llvm:Support",
     ],
+    alwayslink = True,
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vonosmas wrote:

Thanks for the detailed explanation, I agree that this change is reasonable. Would you mind adding a comment above `alwayslink = True` to specify that we deliberately force linking in library to ensure the test case doesn't provide their own `main()`?

https://github.com/llvm/llvm-project/pull/141150