[MacPorts] #63785: rspamd @3.1: builds failing for macOS 10.13 and earlier

[MacPorts]

#63785: rspamd @3.1: builds failing for macOS 10.13 and earlier
---------------------+-----------------------
 Reporter:  mascguy  |      Owner:  essandess
     Type:  defect   |     Status:  assigned
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:  2.7.1
 Keywords:           |       Port:  rspamd
---------------------+-----------------------
 There are a few different compilation errors, though at least some appear
 to suggest the C++ standard isn't being correctly set to 2017. But not
 sure whether that's the cause, based on compilation arguments, etc.

 Error on 10.13 and 10.12:

 {{{
 rspamd-3.1/src/libserver/composites/composites.cxx:26:10: fatal error:
 'variant' file not found
 #include <variant>
          ^~~~~~~~~
 }}}

 Error on 10.11:

 {{{
 rspamd-3.1/contrib/libev/ev.c:4133:34: error: use of undeclared identifier
 'have_monotonic'
             if (ecb_expect_true (have_monotonic)) {
                                  ^
 }}}

 https://ports.macports.org/port/rspamd/builds/

-- 
Ticket URL: <https://trac.macports.org/ticket/63785>
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