+dnl Ask gcc where it's keeping its secret headers
+if test "x$GCC" = xyes; then
+ GCC_PATH=$(gcc -print-search-dirs | sed -ne 's/install: //p')
+ MKDEP_OPTIONS="-fdepend -I${GCC_PATH}include"
+else
+ MKDEP_OPTIONS=-fdepend
+fi
+AC_SUBST(MKDEP_OPTIONS)
+