R-clock fails on 10.7–10.11: Symbol not found: __ZSt19uncaught_exceptionsv

[barracuda156]

Error: package or namespace load failed for ‘clock’ in dyn.load(file, DLLpath = DLLpath, ...):
 unable to load shared object '/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_R_R-clock/R-clock/work/destroot/opt/local/Library/Frameworks/R.framework/Versions/4.3/Resources/library/00LOCK-clock-0.7.0/00new/clock/libs/clock.so':
  dlopen(/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_R_R-clock/R-clock/work/destroot/opt/local/Library/Frameworks/R.framework/Versions/4.3/Resources/library/00LOCK-clock-0.7.0/00new/clock/libs/clock.so, 6): Symbol not found: __ZSt19uncaught_exceptionsv
  Referenced from: /opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_R_R-clock/R-clock/work/destroot/opt/local/Library/Frameworks/R.framework/Versions/4.3/Resources/library/00LOCK-clock-0.7.0/00new/clock/libs/clock.so
  Expected in: flat namespace
 in /opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_R_R-clock/R-clock/work/destroot/opt/local/Library/Frameworks/R.framework/Versions/4.3/Resources/lib
Error: loading failed

[ryandesign (Ryan Carsten Schmidt)]

The failed 10.7–10.11 builds are using clang 16. It succeeds on 10.12 and later using clang 16 and on Snow Leopard using clang 11. That makes me think it might be a libc++ issue that might be solved by using the legacy support portgroup's feature of using a newer MacPorts libc++.

[barracuda156]

Replying to ryandesign:

The failed 10.7–10.11 builds are using clang 16. It succeeds on 10.12 and later using clang 16 and on Snow Leopard using clang 11. That makes me think it might be a libc++ issue that might be solved by using the legacy support portgroup's feature of using a newer MacPorts libc++.

Same as in #67612

[barracuda156]

I will try fixing this, got to an Intel machine with 10.8.

[barracuda156]

In 75293ea653d4780c41ae8723da3f4ffd38ba31e7/macports-ports (master):

R-clock: fix for < 10.13 with clang

Fixes: #68533