[libc-commits] [libc] 9c4e005 - [libc] customizable namespace 2/4 (#65471)

[via libc-commits]

Author: Guillaume Chatelet
Date: 2023-09-07T17:19:47+02:00
New Revision: 9c4e0056785b34f00c02a08b9fceded9512c1f65

URL: https://github.com/llvm/llvm-project/commit/9c4e0056785b34f00c02a08b9fceded9512c1f65
DIFF: https://github.com/llvm/llvm-project/commit/9c4e0056785b34f00c02a08b9fceded9512c1f65.diff

LOG: [libc] customizable namespace 2/4 (#65471)

This implements the second step of
https://discourse.llvm.org/t/rfc-customizable-namespace-to-allow-testing-the-libc-when-the-system-libc-is-also-llvms-libc/73079

Namely "Add a guard in `src/__support/common.h`"

Added: 
    

Modified: 
    libc/src/__support/common.h

Removed: 
    


################################################################################
diff  --git a/libc/src/__support/common.h b/libc/src/__support/common.h
index 1cdd6fe1a515e68..a6aaa4eb2c2287a 100644
--- a/libc/src/__support/common.h
+++ b/libc/src/__support/common.h
@@ -9,6 +9,10 @@
 #ifndef LLVM_LIBC_SUPPORT_COMMON_H
 #define LLVM_LIBC_SUPPORT_COMMON_H
 
+#ifndef LIBC_NAMESPACE
+#error "LIBC_NAMESPACE macro is not defined."
+#endif
+
 #include "src/__support/macros/attributes.h"
 #include "src/__support/macros/properties/architectures.h"