if __NR_mprotect does not exist, dont try and create a syscall for it

diff --git a/libc/sysdeps/linux/common/mprotect.c b/libc/sysdeps/linux/common/mprotect.c
index 7eab338..5edabe0 100644 (file)
--- a/libc/sysdeps/linux/common/mprotect.c
+++ b/libc/sysdeps/linux/common/mprotect.c
@@ -9,4 +9,7 @@
 
 #include "syscalls.h"
 #include <sys/mman.h>
+
+#ifdef __NR_mprotect
 _syscall3(int, mprotect, void *, addr, size_t, len, int, prot);
+#endif