diff --git a/.gitignore b/.gitignore
index 483c670..014d2df 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,7 @@
 */Makefile.in
 Makefile
 Makefile.in
+ar-lib
 compile
 config.guess
 config.h
diff --git a/configure.ac b/configure.ac
index 361e490..92702ad 100644
--- a/configure.ac
+++ b/configure.ac
@@ -22,6 +22,7 @@ AC_USE_SYSTEM_EXTENSIONS
 AC_PROG_CXX
 AC_PROG_MAKE_SET
 AC_PROG_RANLIB
+AM_PROG_AR
 PKG_PROG_PKG_CONFIG
 
 AC_CHECK_HEADERS_ONCE(execinfo.h)