more strict nopie check

Author: cathugger

Diff for: configure.ac

@@ -30,7 +30,7 @@ fi
 nopie=""
 
 oldcflags="$CFLAGS"
-CFLAGS="-nopie"
+CFLAGS="-nopie -Werror"
 AC_MSG_CHECKING([whether CC supports -nopie])
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
     [AC_MSG_RESULT([yes])]
@@ -42,7 +42,7 @@ CFLAGS="$oldcflags"
 if test "x$nopie" = "x"
 then
 	oldcflags="$CFLAGS"
-	CFLAGS="-no-pie"
+	CFLAGS="-no-pie -Werror"
 	AC_MSG_CHECKING([whether CC supports -no-pie])
 	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
 		[AC_MSG_RESULT([yes])]