BFD_BINARY_FOPEN
-# Use the system's zlib library.
-zlibinc="-I\$(srcdir)/../zlib"
-AC_ARG_WITH(system-zlib,
-[AS_HELP_STRING([--with-system-zlib], [use installed libz])],
-zlibinc=
-)
-AC_SUBST(zlibinc)
+# Link in zlib if we can. This allows us to write compressed debug sections.
+AM_ZLIB
# Support for VMS timestamps via cross compile