add AM_PROG_CC_C_O to configure.ac as we appear to need it

git-svn-id: svn://svn.powerdns.com/pdns/trunk/pdns@2701 d19b8d6e-7fed-0310-83ef-9ca221ded41b

diff --git a/configure.ac b/configure.ac
index f94b158a404b67ae0060b8c620e87509a0b50fc5..c082c23024915584995ea195cfdd09dfa3d6a96e 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -9,6 +9,7 @@ AC_PREREQ(2.52)
 AC_PREFIX_DEFAULT(/usr/local)
 AC_PROG_CC
 AC_PROG_CXX
+AM_PROG_CC_C_O
 AC_PROG_YACC
 AM_PROG_LEX
 AC_PROG_INSTALL