[MacPorts] #61151: mono @6.10.0.104: build fails on 10.8 and earlier

[MacPorts]

#61151: mono @6.10.0.104: build fails on 10.8 and earlier
--------------------------+---------------------------------
 Reporter:  chrstphrchvz  |      Owner:  MarcusCalhoun-Lopez
     Type:  defect        |     Status:  assigned
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:  2.6.3
 Keywords:                |       Port:  mono
--------------------------+---------------------------------
 `mono` currently does not build on
 [https://build.macports.org/builders/ports-10.8_x86_64-builder/builds/23685/steps
 /install-port/logs/stdio 10.8] or earlier due to use of features
 introduced in macOS 10.9:
 {{{

 mono-proclib.c:611:2: error: unknown type name 'task_vm_info_data_t'; did
 you mean 'task_info_data_t'?
         task_vm_info_data_t t_info;
         ^~~~~~~~~~~~~~~~~~~
         task_info_data_t
 /usr/include/mach/task_info.h:85:19: note: 'task_info_data_t' declared
 here
 typedef integer_t       task_info_data_t[TASK_INFO_MAX];
                         ^
 mono-proclib.c:612:38: error: use of undeclared identifier
 'TASK_VM_INFO_COUNT'
         mach_msg_type_number_t info_count = TASK_VM_INFO_COUNT;
                                             ^
 mono-proclib.c:628:31: error: use of undeclared identifier 'TASK_VM_INFO'
                 mach_ret = task_info (task, TASK_VM_INFO,
 (task_info_t)&t_info, &info_count);
                                             ^
 mono-proclib.c:638:15: error: member reference base type
 'task_info_data_t' (aka 'integer_t [1024]') is not a structure or union
                 ret = t_info.internal + t_info.compressed;
                       ~~~~~~^~~~~~~~~
 mono-proclib.c:638:33: error: member reference base type
 'task_info_data_t' (aka 'integer_t [1024]') is not a structure or union
                 ret = t_info.internal + t_info.compressed;
                                         ~~~~~~^~~~~~~~~~~
 mono-proclib.c:640:15: error: member reference base type
 'task_info_data_t' (aka 'integer_t [1024]') is not a structure or union
                 ret = t_info.resident_size;
                       ~~~~~~^~~~~~~~~~~~~~
 mono-proclib.c:642:15: error: member reference base type
 'task_info_data_t' (aka 'integer_t [1024]') is not a structure or union
                 ret = t_info.resident_size_peak;
                       ~~~~~~^~~~~~~~~~~~~~~~~~~
 mono-proclib.c:644:15: error: member reference base type
 'task_info_data_t' (aka 'integer_t [1024]') is not a structure or union
                 ret = t_info.virtual_size;
                       ~~~~~~^~~~~~~~~~~~~
 mono-proclib.c:659:15: error: member reference base type
 'task_info_data_t' (aka 'integer_t [1024]') is not a structure or union
                 ret = t_info.compressed;
                       ~~~~~~^~~~~~~~~~~
 9 errors generated.
 }}}

 Should a minimum OS version be set, or can these features be added to
 legacysupport somehow?

-- 
Ticket URL: <https://trac.macports.org/ticket/61151>
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