gh-111544: Fix mimalloc build on AIX (#111593)

diff --git a/Objects/mimalloc/prim/unix/prim.c b/Objects/mimalloc/prim/unix/prim.c
index 060523c581ae248ef476bb49c335b32a652b357d..790d7418eaba03e017a0781b8f34509f06d41a2a 100644 (file)
--- a/Objects/mimalloc/prim/unix/prim.c
+++ b/Objects/mimalloc/prim/unix/prim.c
@@ -50,7 +50,7 @@ terms of the MIT license. A copy of the license can be found in the file
   #include <sys/sysctl.h>
 #endif
 
-#if !defined(__HAIKU__) && !defined(__APPLE__) && !defined(__CYGWIN__)
+#if !defined(__HAIKU__) && !defined(__APPLE__) && !defined(__CYGWIN__) && !defined(_AIX)
   #define MI_HAS_SYSCALL_H
   #include <sys/syscall.h>
 #endif
@@ -76,7 +76,7 @@ static int mi_prim_access(const char *fpath, int mode) {
   return syscall(SYS_access,fpath,mode);
 }
 
-#elif !defined(__APPLE__)  // avoid unused warnings
+#elif !defined(__APPLE__) && !defined(_AIX)  // avoid unused warnings
 
 static int mi_prim_open(const char* fpath, int open_flags) {
   return open(fpath,open_flags);