sve feature detection only on linux

Signed-off-by: Marco Vogel <[email protected]>

Author: vogma

ompi/mca/op/aarch64/configure.m4

@@ -106,10 +106,10 @@ int main(void) {
                 AC_MSG_CHECKING([for SVE support (with +sve)])
                 AC_LINK_IFELSE(
                     [AC_LANG_SOURCE([[
-#if defined(__aarch64__)
+#if defined(__aarch64__) && defined(__linux__)
   #include <arm_sve.h>
 #else
-  #error "not on aarch64"
+  #error "this feature is only supported on aarch64 + linux platforms"
 #endif
 
 __attribute__((__target__("+sve")))