barrier @2.4.0: error: expected unqualified-id before '=' token

[barracuda156]

Failure on 10.6.8 Rosetta:

/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_barrier/barrier/work/barrier-2.4.0/src/lib/platform/OSXMediaKeySupport.mm: In function 'KeyID convertNXKeyTypeToKeyID(uint32_t)':
/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_barrier/barrier/work/barrier-2.4.0/src/lib/platform/OSXMediaKeySupport.mm:65:6: error: expected unqualified-id before '=' token
   id = kKeyAudioUp;
      ^
/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_barrier/barrier/work/barrier-2.4.0/src/lib/platform/OSXMediaKeySupport.mm:68:6: error: expected unqualified-id before '=' token
   id = kKeyAudioDown;
      ^
/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_barrier/barrier/work/barrier-2.4.0/src/lib/platform/OSXMediaKeySupport.mm:71:6: error: expected unqualified-id before '=' token
   id = kKeyAudioMute;
      ^
/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_barrier/barrier/work/barrier-2.4.0/src/lib/platform/OSXMediaKeySupport.mm:74:6: error: expected unqualified-id before '=' token
   id = kKeyEject;
      ^
/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_barrier/barrier/work/barrier-2.4.0/src/lib/platform/OSXMediaKeySupport.mm:77:6: error: expected unqualified-id before '=' token
   id = kKeyAudioPlay;
      ^
/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_barrier/barrier/work/barrier-2.4.0/src/lib/platform/OSXMediaKeySupport.mm:81:6: error: expected unqualified-id before '=' token
   id = kKeyAudioNext;
      ^
/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_barrier/barrier/work/barrier-2.4.0/src/lib/platform/OSXMediaKeySupport.mm:85:6: error: expected unqualified-id before '=' token
   id = kKeyAudioPrev;
      ^
/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_barrier/barrier/work/barrier-2.4.0/src/lib/platform/OSXMediaKeySupport.mm: In function 'bool isMediaKeyEvent(CGEventRef)':
/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_barrier/barrier/work/barrier-2.4.0/src/lib/platform/OSXMediaKeySupport.mm:97:7: error: '-fobjc-exceptions' is required to enable Objective-C exception syntax
  @try {
       ^
make[2]: *** [src/lib/platform/CMakeFiles/platform.dir/OSXMediaKeySupport.mm.o] Error 1
make[2]: *** Waiting for unfinished jobs....
/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_barrier/barrier/work/barrier-2.4.0/src/lib/platform/OSXScreen.mm:51:29: warning: multi-character character constant [-Wmultichar]
  kBarrierMouseScrollAxisX = 'saxx',
                             ^~~~~~
/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_barrier/barrier/work/barrier-2.4.0/src/lib/platform/OSXScreen.mm:52:29: warning: multi-character character constant [-Wmultichar]
  kBarrierMouseScrollAxisY = 'saxy'
                             ^~~~~~
/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_barrier/barrier/work/barrier-2.4.0/src/lib/platform/OSXScreen.mm:351:26: warning: multi-character character constant [-Wmultichar]
   EventHotKeyID hkid = { 'SNRG', (UInt32)id };
                          ^~~~~~
/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_barrier/barrier/work/barrier-2.4.0/src/lib/platform/OSXPasteboardPeeker.mm: In function 'const __CFString* getDraggedFileURL()':
/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_barrier/barrier/work/barrier-2.4.0/src/lib/platform/OSXPasteboardPeeker.mm:31:15: error: expected ';' before 'in'
  for (id file in files) {
               ^~
/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_barrier/barrier/work/barrier-2.4.0/src/lib/platform/OSXPasteboardPeeker.mm:31:15: error: 'in' was not declared in this scope
/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_barrier/barrier/work/barrier-2.4.0/src/lib/platform/OSXPasteboardPeeker.mm:31:15: note: suggested alternative: 'yn'
  for (id file in files) {
               ^~
               yn
/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_barrier/barrier/work/barrier-2.4.0/src/lib/platform/OSXPasteboardPeeker.mm:31:18: error: expected ';' before 'files'
  for (id file in files) {
                  ^~~~~
/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_barrier/barrier/work/barrier-2.4.0/src/lib/platform/OSXPasteboardPeeker.mm:33:25: warning: embedded NUL in CFString literal [--all-warnings]
   [string appendString: @"\0"];
                         ^
make[2]: *** [src/lib/platform/CMakeFiles/platform.dir/OSXPasteboardPeeker.mm.o] Error 1
/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_barrier/barrier/work/barrier-2.4.0/src/lib/platform/OSXScreen.mm: In member function 'virtual UInt32 OSXScreen::registerHotKey(KeyID, KeyModifierMask)':
/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_barrier/barrier/work/barrier-2.4.0/src/lib/platform/OSXScreen.mm:330:6: error: expected unqualified-id before '=' token
   id = m_oldHotKeyIDs.back();
      ^
/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_barrier/barrier/work/barrier-2.4.0/src/lib/platform/OSXScreen.mm:334:6: error: expected unqualified-id before '=' token
   id = m_hotKeys.size() + 1;
      ^
make[2]: *** [src/lib/platform/CMakeFiles/platform.dir/OSXScreen.mm.o] Error 1
make[2]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_barrier/barrier/work/build'
make[1]: *** [src/lib/platform/CMakeFiles/platform.dir/all] Error 2
make[1]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_barrier/barrier/work/build'
make: *** [all] Error 2
make: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_barrier/barrier/work/build'
Command failed:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_barrier/barrier/work/build" && /usr/bin/make -j4 -w all VERBOSE=ON 
Exit code: 2
Error: Failed to build barrier: command execution failed

Same failure has been reported for 10.5.8: ​https://forums.macrumors.com/threads/request-help-porting-barrier-kvm-to-ppc-leopard-tiger.2314836/

[ryandesign (Ryan Carsten Schmidt)]

According to the barrier web page, barrier 2.4.0 requires macOS 10.12 or later for the GUI though the CLI portion should be usable on some earlier versions. The port currently doesn't build on 10.11 or earlier.

[barracuda156]

Replying to ryandesign:

According to the barrier web page, barrier 2.4.0 requires macOS 10.12 or later for the GUI though the CLI portion should be usable on some earlier versions. The port currently doesn't build on 10.11 or earlier.

Yeah, the task is to build it without GUI at least.