[MacPorts] #60432: base: (linux) arch flags are not recognized by linux compilers

[MacPorts]

#60432: base: (linux)  arch flags are not recognized by linux compilers
--------------------+--------------------
 Reporter:  kencu   |      Owner:  (none)
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  base    |    Version:
 Keywords:  linux   |       Port:
--------------------+--------------------
 On Ubuntu, {{{gcc}}} errors when it is given an {{{arch}}} flag on the
 build line. The {{{darwin}}} builds of {{{gcc}}} accepts {{{arch}}} but
 the linux version does not.

 {{{clang}}} accepts the {{{arch}}} flags, but doesn't use them, and issues
 a warning that the flag is unrecognized. This can generate configure
 errors.

 The archflags can be manually cleared in the portfiles by setting them all
 to empty strings, like we do in the gcc Portfiles.

 In base, I tried overriding {{{portconfigure::arch_flag_supported}}} to
 return {{{no}}} on linux, but that then resulted in another error that
 said (something like)
 {{{
 error: cc has no archflags
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/60432>
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