[MacPorts] #63418: mkvtoolnix @41.0.0_1: fatal error: static_assert failed due to requirement 'sizeof(char) == 0' "If you want to output boost::optional, include header <boost/optional/optional_io.hpp>"

[MacPorts]

#63418: mkvtoolnix @41.0.0_1: fatal error: static_assert failed due to requirement
'sizeof(char) == 0' "If you want to output boost::optional, include header
<boost/optional/optional_io.hpp>"
---------------------------+------------------------
  Reporter:  sambthompson  |      Owner:  ryandesign
      Type:  defect        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.7.1
Resolution:                |   Keywords:  elcapitan
      Port:  mkvtoolnix    |
---------------------------+------------------------

Comment (by sambthompson):

 Additional data points on this. After inadvertently uninstalling
 mkvtoolnix, I tried a fresh install with trace on and the GUI variant
 suppressed, and it the build and install was successful:
 {{{
 % sudo port -t install mkvtoolnix -qtgui
 }}}
 The trace showed masses of boost include files were accessed:
 {{{
 Warning: The following files inside the MacPorts prefix not installed by a
 port were accessed:
   /opt/local/etc/xml/catalog
   /opt/local/include/boost/algorithm/string.hpp
   /opt/local/include/boost/algorithm/string/case_conv.hpp
 ...
   /opt/local/include/boost/variant/variant_fwd.hpp
   /opt/local/include/boost/variant/visitor_ptr.hpp
 }}}

 Not sure if this warning suggests there's an issue with the port install,
 since I have boost showing as installed:

 {{{
 % sudo port installed | grep boost
   boost @1.76_0 (active)
   boost176 @1.76.0_3+clang13+no_single+no_static+python39 (active)
 }}}

 With the trace, but not the variant suppression:
 {{{
 % sudo port -t install mkvtoolnix -qtgui
 }}}

 This also succeeded, but I got an additional set of warnings on non-port
 accessed files during configuration phase as well:

 {{{
 Warning: The following files inside the MacPorts prefix not installed by a
 port were accessed:
   /opt/local/libexec/qt5/include/QtCore/QCoreApplication
   /opt/local/libexec/qt5/include/QtCore/QObject
 ...
   /opt/local/libexec/qt5/include/QtCore/qwineventnotifier.h
   /opt/local/libexec/qt5/include/QtCore/qxmlstream.h
 /opt/local/libexec/qt5/lib/QtConcurrent.framework/Versions/Current/QtConcurrent
   /opt/local/libexec/qt5/lib/QtCore.framework/Versions/Current/QtCore
   /opt/local/libexec/qt5/lib/QtGui.framework/Versions/Current/QtGui
 /opt/local/libexec/qt5/lib/QtMultimedia.framework/Versions/Current/QtMultimedia
 /opt/local/libexec/qt5/lib/QtNetwork.framework/Versions/Current/QtNetwork
 /opt/local/libexec/qt5/lib/QtWidgets.framework/Versions/Current/QtWidgets
 }}}

 Again, I have qt5 installed:

 {{{
 % sudo port installed | grep qt5
   qscintilla-qt5 @2.13.1_0 (active)
   qt511-qtbase @5.11.3_7+openssl (active)
   qt511-qtdeclarative @5.11.3_0 (active)
   qt511-qtmacextras @5.11.3_0 (active)
   qt511-qtmultimedia @5.11.3_0 (active)
   qt511-qtsvg @5.11.3_0 (active)
   qt511-qttools @5.11.3_1 (active)
   qt511-qttranslations @5.11.3_0 (active)
   qt511-qtxmlpatterns @5.11.3_0 (active)
   wireshark2
 @2.6.19_2+cares+chmodbpf+geoip+gnutls+kerberos5+libgcrypt+libsmi+portaudio+qt5+zlib
 (active)
 }}}

 Not sure if that offers any insights, but hope so. Trace from second run
 attached.

-- 
Ticket URL: <https://trac.macports.org/ticket/63418#comment:2>
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