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[uclibc-ng-devel,v2] Clang support for gnu_inline attribute

Message ID 20240706115143.24946-1-marcus.haehnel@kernkonzept.com
State Superseded
Headers show
Series [uclibc-ng-devel,v2] Clang support for gnu_inline attribute | expand

Commit Message

Marcus Haehnel July 6, 2024, 11:51 a.m. UTC 
From: Marcus Hähnel <marcus.haehnel@kernkonzept.com>

Clang also supports the gnu_inline attribute and the
__GNUC_STDC_INLINE__ macro (C99 semantics). However, it reports as
GCC 4.2 compatible (__GNUC_MINOR__ / __GNUC__) and thus the current
defines do not think it can support this.

Add clang as an alternative for this support. Documentation shows that
this attribute is supported since at least Clang 8.
---
 include/sys/cdefs.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/include/sys/cdefs.h b/include/sys/cdefs.h
index 9b3a02177..656548c52 100644
--- a/include/sys/cdefs.h
+++ b/include/sys/cdefs.h
@@ -320,7 +320,7 @@ 
    inline semantics, unless -fgnu89-inline is used.
    For -std=gnu99, forcing gnu_inline attribute does not change behavior,
    but may silence spurious warnings (such as in GCC 4.2).  */
-#if !defined __cplusplus || __GNUC_PREREQ (4,3)
+#if !defined __cplusplus || __GNUC_PREREQ (4,3) || __CLANG_PREREQ(8,0)
 # if defined __GNUC_STDC_INLINE__ || defined __GNUC_GNU_INLINE__ || defined __cplusplus
 #  define __extern_inline extern __inline __attribute__ ((__gnu_inline__))
 #  if __GNUC_PREREQ (4,3)