[MacPorts] #58784: opencv @3.4.7_0: error: use of undeclared identifier '_mm256_cvtps_ph'

[MacPorts]

#58784: opencv @3.4.7_0: error: use of undeclared identifier '_mm256_cvtps_ph'
------------------------+------------------------------------
  Reporter:  macdeport  |      Owner:  Chris Jones <jonesc@…>
      Type:  defect     |     Status:  closed
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.5.4
Resolution:  fixed      |   Keywords:
      Port:  opencv     |
------------------------+------------------------------------

Comment (by cjones051073):

 You appear to not have Xcode installed. i.e. you have

 {{{
 DEBUG: OS X 10.10 (darwin/14.5.0) arch i386
 DEBUG: MacPorts 2.5.4
 DEBUG: Xcode none
 DEBUG: SDK 10.10
 DEBUG: MACOSX_DEPLOYMENT_TARGET: 10.10
 Warning: Xcode does not appear to be installed; most ports will likely
 fail to build.
 }}}

 I have

 {{{
 DEBUG: MacPorts 2.5.4
 DEBUG: Xcode 7.0.1
 DEBUG: SDK 10.10
 DEBUG: MACOSX_DEPLOYMENT_TARGET: 10.10
 }}}

 you should have paid attention to the warning above. Please install Xcode
 and try again.

-- 
Ticket URL: <https://trac.macports.org/ticket/58784#comment:19>
MacPorts <https://www.macports.org/>
Ports system for macOS