+# Check whether --with-system-zlib was given.
+if test "${with_system_zlib+set}" = set; then :
+ withval=$with_system_zlib; if test x$with_system_zlib = xyes ; then
+ zlibdir=
+ zlibinc=
+ fi
+
+fi
+
+
+
+
+
+# BFD uses libdl when when plugins enabled.
+
+ maybe_plugins=no
+ for ac_header in dlfcn.h
+do :
+ ac_fn_c_check_header_compile "$LINENO" "dlfcn.h" "ac_cv_header_dlfcn_h" "$ac_includes_default
+"
+if test "x$ac_cv_header_dlfcn_h" = x""yes; then :
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_DLFCN_H 1
+_ACEOF
+ maybe_plugins=yes
+fi
+
+done
+
+ for ac_header in windows.h
+do :
+ ac_fn_c_check_header_compile "$LINENO" "windows.h" "ac_cv_header_windows_h" "$ac_includes_default
+"
+if test "x$ac_cv_header_windows_h" = x""yes; then :
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_WINDOWS_H 1
+_ACEOF
+ maybe_plugins=yes