qt5-qtcanvas3d @5.6.2: Project ERROR: Could not resolve SDK path for 'macosx10.11'

[David-Roussel]

qt5 @5.6.2 (aqua) failed to build because of qt5-qtcanvas3d build failure on mac os 10.11.6 with macports 2.4.0

--->  Configuring qt5-qtcanvas3d
Executing:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_aqua_qt5/qt5-qtcanvas3d/work/qtcanvas3d-opensource-src-5.6.2" && /opt/local/libexec/qt5/bin/qmake PREFIX=/opt/local -spec macx-clang 
Info: creating stash file /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_aqua_qt5/qt5-qtcanvas3d/work/qtcanvas3d-opensource-src-5.6.2/.qmake.stash
Project ERROR: Could not resolve SDK path for 'macosx10.11'
Command failed:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_aqua_qt5/qt5-qtcanvas3d/work/qtcanvas3d-opensource-src-5.6.2" && /opt/local/libexec/qt5/bin/qmake PREFIX=/opt/local -spec macx-clang 
Exit code: 3
Error: Failed to configure qt5-qtcanvas3d: configure failure: command execution failed
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_aqua_qt5/qt5-qtcanvas3d/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets to report a bug.
Error: Processing of port qt5 failed

[David-Roussel]

build log file for qt5-qtcanvas3d

[ryandesign (Ryan Carsten Schmidt)]

What is your Xcode version? Based on the fact that your main.log says you are using clang 800.0.42.1, I assume you have Xcode 8.1, 8.2, or 8.2.1, and these only contain the 10.12 SDK, even when running on 10.11, so if Qt is expecting to find a 10.11 SDK, that expectation would be incorrect. I guess this problem might be the result of [72f9ad973581bce3189fd8f291a8878c1c5a513c/macports-ports]. It might even be a MacPorts base bug, if we are setting configure.sdk_version to a value that doesn't make sense for the installed Xcode version.

[MarcusCalhoun-Lopez (Marcus Calhoun-Lopez)]

In 24ca991f/macports-ports:

qt5*: workaround for invalid configure.sdk_version

Fixes #53597

[MarcusCalhoun-Lopez (Marcus Calhoun-Lopez)]

I have opened a separate ticket (#53601) concerning the value configure.sdk_version.