Fixed (again) a problem with AM_PROG_AR.

hgst · hgst · commit 22be4c0604aa · 2015-10-22T14:33:43.000+09:00
diff --git a/configure.ac b/configure.ac
@@ -13,6 +13,7 @@ AM_PROG_CC_C_O
 
 AC_SYS_LARGEFILE
 
+m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
 +m4_pattern_allow([AM_PROG_AR])
 LT_INIT
 
