configure: check Linux syscalls only on Linux

They could work differently on other systems. Better safe than sorry.

diff --git a/configure.ac b/configure.ac
index d426b1a4e5fe6c6c640b5b86cd9d2dd64627ce1c..2a9c92da962280e0ea5000d28e835c5803c76d6c 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -531,7 +531,11 @@ AC_PREPROC_IFELSE([AC_LANG_SOURCE([
 AC_FUNC_STRCOLL
 
 dnl Check for non-standard system calls
-AC_CHECK_FUNCS([accept4 pipe2 eventfd vmsplice sched_getaffinity])
+case "$SYS" in
+  "linux")
+    AC_CHECK_FUNCS([accept4 pipe2 eventfd vmsplice sched_getaffinity])
+    ;;
+esac
 
 AH_BOTTOM([#include <vlc_fixups.h>])