diff --git a/configure.ac b/configure.ac
index 904b2ba50b..16e011d5fa 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1820,7 +1820,7 @@ case "$host" in
     SAVED_CFLAGS="${CFLAGS}"
     CFLAGS="-fvisibility=hidden"
     AC_MSG_CHECKING([for -fvisibility=hidden compiler flag])
-    AC_TRY_COMPILE([], [int main (void) { return 0; }],
+    AC_TRY_COMPILE([], [return 0],
                    AC_MSG_RESULT(yes)
                    enable_fvisibility_hidden=yes,
                    AC_MSG_RESULT(no)
@@ -1901,8 +1901,7 @@ AC_ARG_ENABLE(Bsymbolic,
               [SAVED_LDFLAGS="${LDFLAGS}"
                AC_MSG_CHECKING([for -Bsymbolic-functions linker flag])
                LDFLAGS=-Wl,-Bsymbolic-functions
-               AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
-                                               [[int main (void) { return 0; }]])],
+               AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[return 0]])],
                               [AC_MSG_RESULT(yes)
                                enable_Bsymbolic=yes],
                               [AC_MSG_RESULT(no)