optipng universal: Unknown option --disable-dependency-tracking

[wiml@…]

Much like #20883, optipng fails to configure because macports is trying to pass an unknown option to its configure script:

# /opt/local/bin/port install optipng
--->  Computing dependencies for optipng
--->  Fetching optipng
--->  Verifying checksum(s) for optipng
--->  Extracting optipng
--->  Configuring optipng
Error: Target org.macports.configure returned: configure failure: shell command " cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_graphics_optipng/work/optipng-0.6.3" && ./configure --disable-dependency-tracking " returned error 1
Command output: Unknown option: --disable-dependency-tracking
Type "./configure -help" for help

Adding configure.universal_args='' allows optipng to be built and used.

MacPorts 1.8.0, MacOS X 10.6 / 10A432, Intel.

[vinc17@…]

I'd say that this is a bug in MacPorts: the --disable-dependency-tracking is not a standard option (see ​GNU Coding Standards). Anyway I've added

configure.universal_args

in r56752 (configure.universal_args='' does not work here on Tiger / PowerPC).