git: b6d823e39072 - main - Fix up builds on Linux hosts after llvm 21.1.8 merge

The branch main has been updated by dim:

URL: https://cgit.FreeBSD.org/src/commit/?id=b6d823e39072daae9df4b47a15ea7142b7a55f1a

commit b6d823e39072daae9df4b47a15ea7142b7a55f1a
Author:     Dimitry Andric <dim@FreeBSD.org>
AuthorDate: 2026-04-25 15:20:27 +0000
Commit:     Dimitry Andric <dim@FreeBSD.org>
CommitDate: 2026-04-25 15:21:28 +0000

    Fix up builds on Linux hosts after llvm 21.1.8 merge
    
    This is because contrib/llvm-project/llvm/lib/Support/Unix/Threading.inc
    attempts to use pthread_get_name_np(3) and pthread_set_name_np(3), which
    are not defined on Linux.
    
    Reported by:    ivy
    PR:             292067
    MFC after:      1 month
---
 lib/clang/include/llvm/Config/config.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/clang/include/llvm/Config/config.h b/lib/clang/include/llvm/Config/config.h
index e504ac8f13bb..0aea32fa9dce 100644
--- a/lib/clang/include/llvm/Config/config.h
+++ b/lib/clang/include/llvm/Config/config.h
@@ -114,10 +114,14 @@
 #define HAVE_PTHREAD_SETNAME_NP 1
 
 /* Define to 1 if you have the `pthread_get_name_np' function. */
+#if !defined(__linux__)
 #define HAVE_PTHREAD_GET_NAME_NP 1
+#endif
 
 /* Define to 1 if you have the `pthread_set_name_np' function. */
+#if !defined(__linux__)
 #define HAVE_PTHREAD_SET_NAME_NP 1
+#endif
 
 /* Define to 1 if you have the <mach/mach.h> header file. */
 #if __has_include(<mach/mach.h>)