diff --git a/configure.in b/configure.in
index b0d035e01..8150bff71 100644
--- a/configure.in
+++ b/configure.in
@@ -325,8 +325,9 @@ AC_CHECK_FUNCS(sethostent   gethostent   endhostent   dnl
 	       inet_pton inet_ntop)
 
 AC_MSG_CHECKING(for __libc_stack_end)
-AC_TRY_LINK([extern char *__libc_stack_end;],
-            [char *p = __libc_stack_end;],
+AC_TRY_LINK([#include <stdio.h>
+extern char *__libc_stack_end;],
+             [printf("%p", (char*) __libc_stack_end);],
             have_libc_stack_end=yes,
             have_libc_stack_end=no)
 AC_MSG_RESULT($have_libc_stack_end)
@@ -474,7 +475,10 @@ AC_REPLACE_FUNCS(inet_aton putenv strerror memmove mkstemp)
 # explicitly to LIBOBJS to make sure that it is translated to
 # `alloca.lo' for libtool later on.  This can and should be done more cleanly.
 AC_FUNC_ALLOCA
-if test "$ALLOCA" = "alloca.o"; then AC_LIBOBJ([alloca]); fi
+if test "$ALLOCA" = "alloca.o"
+then
+  AC_LIBOBJ([alloca])
+fi
 
 AC_CHECK_MEMBERS([struct stat.st_rdev])
 AC_CHECK_MEMBERS([struct stat.st_blksize])