[MacPorts] #55003: arm-none-eabi-gcc @5.4.0_3 fails to build

[MacPorts]

#55003: arm-none-eabi-gcc @5.4.0_3 fails to build
--------------------------------+------------------------
  Reporter:  tcwan              |      Owner:
      Type:  defect             |     Status:  new
  Priority:  Normal             |  Milestone:
 Component:  ports              |    Version:  2.4.1
Resolution:                     |   Keywords:  highsierra
      Port:  arm-none-eabi-gcc  |
--------------------------------+------------------------

Comment (by kencu):

 The specified error is an error in building gcc5 that has been fixed in
 gcc 5.5.

 I have fixed some simple gcc build errors before, and so I took 20 minutes
 to look into this, but it's going to be what looks like a lot more work
 than that to straighten it all out. Just adding in the fix to gcc 5.4's
 `gcc/system.h` did not allow the port to build for me.

 It looks to me like the whole `crossgcc` group of ports and the supporting
 PortGroup file is going to need to be looked at and updated.

 `/opt/macports-ports/_resources/port1.0/group/crossgcc-1.0.tcl`

--
Ticket URL: <https://trac.macports.org/ticket/55003#comment:4>
MacPorts <https://www.macports.org/>
Ports system for macOS