[MacPorts] #66757: crossgdb-1.0.tcl unecessary limits arm-none-eabi-gdb to x86-64 arch

[MacPorts]

#66757: crossgdb-1.0.tcl unecessary limits arm-none-eabi-gdb to x86-64 arch
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 Reporter:  blu     |      Owner:  (none)
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:
 Keywords:          |       Port:
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 crossgdb-1.0.tcl explicitly limits building of cross-gdb to x86-64 hosts,
 due to the fact gdb does not currently support target of macos/arm64.

 But that is really not the case with cross-gdb and e.g. arm-none-eabi
 target -- this is non-native gdb, and as such builds fine on macos. One
 can successfully build and install an arm-none-eabi-gdb port just by
 removing the supported_archs limitation in crossgdb-1.0.tcl on Big Sur
 arm64.

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Ticket URL: <https://trac.macports.org/ticket/66757>
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