[MacPorts] #56895: aquaterm @1.1.1 build fails with Xcode 10.0 (b5) on Mojave beta5

[MacPorts]

#56895: aquaterm @1.1.1  build fails with Xcode 10.0 (b5) on Mojave beta5
-----------------------+----------------------
  Reporter:  AP1010    |      Owner:  g5pw
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.5.3
Resolution:            |   Keywords:  mojave
      Port:  aquaterm  |
-----------------------+----------------------

Comment (by kencu):

 I noted the exact same SymLink error building `irrlicht` with Xcode 10, so
 this is a general `xcode PG` thing to fix:
 {{{
 The following build commands failed:
         SymLink
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_irrlicht/irrlicht/work/irrlicht-1.8.4/source/Irrlicht/MacOSX/build/Release/IrrFramework.framework
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_irrlicht/irrlicht/work/destroot/opt/local/Library/Frameworks/IrrFramework.framework
 (1 failure)
 Command failed: cd
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_irrlicht/irrlicht/work/irrlicht-1.8.4"
 && /usr/bin/xcodebuild -project
 "./source/Irrlicht/MacOSX/MacOSX.xcodeproj" -target "IrrFramework"
 -configuration Release install INSTALL_PATH=/opt/local/Library/Frameworks
 OBJROOT="/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_irrlicht/irrlicht/work/irrlicht-1.8.4/source/Irrlicht/MacOSX/build/"
 SYMROOT="/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_irrlicht/irrlicht/work/irrlicht-1.8.4/source/Irrlicht/MacOSX/build/"
 MACOSX_DEPLOYMENT_TARGET=10.13 ARCHS=x86_64 SDKROOT=""
 GCC_VERSION=com.apple.compilers.llvm.clang.1_0 CLANG_CXX_LIBRARY="libc++"
 DSTROOT="/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_irrlicht/irrlicht/work/destroot"
 Exit code: 65
 }}}

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Ticket URL: <https://trac.macports.org/ticket/56895#comment:18>
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