Building the rseq selftests against musl libc fails because musl's
<features.h> does not provide the glibc-specific __GNUC_PREREQ macro:
error: missing binary operator before token '('
Replace __GNUC_PREREQ(11, 1) with an equivalent check using __GNUC__
and __GNUC_MINOR__ directly. This pattern is portable across all C
library implementations and is already used elsewhere in the tools/
tree (e.g., tools/include/linux/string.h).
This also allows removing the #include <features.h>, which was only
needed for __GNUC_PREREQ.
Fixes: 886ddfba933f ("selftests/rseq: Introduce thread pointer getters")
Signed-off-by: Hisam Mehboob <[email protected]>
---
tools/testing/selftests/rseq/rseq-x86-thread-pointer.h | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/tools/testing/selftests/rseq/rseq-x86-thread-pointer.h
b/tools/testing/selftests/rseq/rseq-x86-thread-pointer.h
index d3133587d996..5a29d6bec51f 100644
--- a/tools/testing/selftests/rseq/rseq-x86-thread-pointer.h
+++ b/tools/testing/selftests/rseq/rseq-x86-thread-pointer.h
@@ -8,13 +8,11 @@
#ifndef _RSEQ_X86_THREAD_POINTER
#define _RSEQ_X86_THREAD_POINTER
-#include <features.h>
-
#ifdef __cplusplus
extern "C" {
#endif
-#if __GNUC_PREREQ (11, 1)
+#if __GNUC__ > 11 || (__GNUC__ == 11 && __GNUC_MINOR__ >= 1)
static inline void *rseq_thread_pointer(void)
{
return __builtin_thread_pointer();
--
2.51.0
