diff --git a/configure b/configure
index cbad6f292e..10955a7f99 100755
--- a/configure
+++ b/configure
@@ -1974,11 +1974,7 @@ check_deps $ARCH_EXT_LIST
 
 #Darwin CC versions
 if test $target_os = darwin; then
-    if enabled xlc; then
-        add_cflags -qpdf2 -qlanglvl=extc99 -qmaxmem=-1 -qarch=auto -qtune=auto
-    else
         enabled shared || check_cflags -mdynamic-no-pic
-    fi
 fi
 
 disabled optimizations || check_cflags -fomit-frame-pointer