[MacPorts] #64952: Can Macports base be built as universal? configure: error: C preprocessor "/lib/cpp" fails sanity check

[MacPorts]

#64952: Can Macports base be built as universal? configure: error: C preprocessor
"/lib/cpp" fails sanity check
---------------------------+-------------------------------------
  Reporter:  barracuda156  |      Owner:  (none)
      Type:  defect        |     Status:  closed
  Priority:  Normal        |  Milestone:
 Component:  base          |    Version:  2.7.2
Resolution:  invalid       |   Keywords:  powerpc, leopard, ppc64
      Port:                |
---------------------------+-------------------------------------

Comment (by kencu):

 look here for info on how MacPorts does this itself:

 https://github.com/macports/macports-
 ports/blob/master/sysutils/MacPorts/Portfile

 this for example seems to do it for i386/ppc builds:

 {{{
 configure.cflags-append -arch ppc -arch i386
 configure.args-append SHLIB_LDFLAGS='-arch ppc -arch i386'
 }}}

 You no doubt know by now that to do that manually (outside of a MacPorts
 build) you have to take steps to add those flags manually into the
 environment variables and args during your build.

-- 
Ticket URL: <https://trac.macports.org/ticket/64952#comment:4>
MacPorts <https://www.macports.org/>
Ports system for macOS