--- a/configure.ac
+++ b/configure.ac
@@ -504,9 +504,9 @@ have_ioloop=no
 
 if test "$ioloop" = "best" || test "$ioloop" = "epoll"; then
   AC_CACHE_CHECK([whether we can use epoll],i_cv_epoll_works,[
-    AC_TRY_RUN([
+    AC_TRY_LINK([
       #include <sys/epoll.h>
-  
+    ], [
       int main()
       {
 	return epoll_create(5) < 1;
@@ -639,7 +639,7 @@ fi
 dnl * Old glibcs have broken posix_fallocate(). Make sure not to use it.
 dnl * It may also be broken in AIX.
 AC_CACHE_CHECK([whether posix_fallocate() works],i_cv_posix_fallocate_works,[
-  AC_TRY_RUN([
+  AC_TRY_LINK([
     #define _XOPEN_SOURCE 600
     #include <stdio.h>
     #include <stdlib.h>
@@ -648,6 +648,7 @@ AC_CACHE_CHECK([whether posix_fallocate(
     #if defined(__GLIBC__) && (__GLIBC__ < 2 || __GLIBC_MINOR__ < 7)
       possibly broken posix_fallocate
     #endif
+  ], [
     int main() {
       int fd = creat("conftest.temp", 0600);
       int ret;