[libcxx-commits] [libcxx] [libcxx]support freestanding libc++ (PR #208900)

[via libcxx-commits]

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@@ -60,11 +60,49 @@ size_t strlen(const char* s);
 #    pragma GCC system_header
 #  endif
 
+#  include <stddef.h>
 #  if __has_include_next(<string.h>)
 #    include_next <string.h>
-#  endif
+#  else
+#    ifndef __cplusplus
+extern "C" {
+#    endif
 
-#  include <stddef.h>
+/*
+We offer declarations for these C functions,
+leaving the implementations to be handled by users.
+*/
+
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trcrsired wrote:

i think this has to be done at gcc side. Just too many for x86_64-elf freestanding gcc

https://github.com/llvm/llvm-project/pull/208900