[libc-commits] [libc] [libc] Implement lit-based test execution for Libc (PR #178746)

[Petr Hosek via libc-commits]

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@@ -0,0 +1,85 @@
+#===============================================================================
+# Lit Test Infrastructure for LLVM libc
+#
+# This module provides functions to set up lit-based testing for libc.
+#
+# Lit discovers and runs the test executables created by the
+# add_libc_test() infrastructure. No separate build rules are needed.
+#===============================================================================
+
+# Guard against double inclusion
+if(LIBC_LIT_TEST_RULES_INCLUDED)
+  return()
+endif()
+set(LIBC_LIT_TEST_RULES_INCLUDED TRUE)
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petrhosek wrote:

```suggestion
include_guard()
```
What's the reason for needing this in the first place?

https://github.com/llvm/llvm-project/pull/178746