openscad-devel @2018.04-1_2: error: no viable conversion from 'boost::tribool' to 'bool'

[murrayE]

Under macOS Big Sur 11.2.1 , MacPorts 2.6.99, and Xcode CLT 12.4, the following build error occurs:

:info:build src/CSGTreeEvaluator.cc:179:9: error: no viable conversion from 'boost::tribool' to 'bool'
:info:build                         bool convex = ps->convexValue();
:info:build                              ^        ~~~~~~~~~~~~~~~~~
:info:build /usr/bin/clang++ -c -Os -stdlib=libc++ -arch x86_64 -DSTACKSIZE=8388608 -fno-strict-aliasing -frounding-math -I/opt/local/include/glib-2.0 -I/opt/local/lib/glib-2.0/include -I/opt/local/include -I/opt/local/include/libxml2 -I/opt/local/include/harfbuzz -I/opt/local/include/freetype2 -I/opt/local/include/fontconfig -stdlib=libc++ -std=c++0x -O2 -arch x86_64 -Xarch_x86_64 -mmacosx-version-min=11.0 -Wall -W -Wno-unused-local-typedefs -DOPENSCAD_VERSION=2018.04-1 -DOPENSCAD_SHORTVERSION=2018.04 -DOPENSCAD_YEAR=2018.0 -DOPENSCAD_MONTH=04.0 -DOPENSCAD_DAY=.0 -DSTACKSIZE=8388608 -DENABLE_MDI -DENABLE_CGAL -DENABLE_OPENCSG -D__ASSERT_MACROS_DEFINE_VERSIONS_WITHOUT_UNDERSCORES=0 -DUSE_SCINTILLA_EDITOR -DQT_NO_DEBUG -DQT_OPENGL_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/opt/local/libexec/qt4/share/mkspecs/macx-g++ -I. -Iobjects -I/opt/local/libexec/qt4/Library/Frameworks/QtCore.framework/Versions/4/Headers -I/opt/local/libexec/qt4/Library/Frameworks/QtGui.framework/Versions/4/Headers -I/opt/local/libexec/qt4/Library/Frameworks/QtOpenGL.framework/Versions/4/Headers -Isrc -Isrc/ext/libtess2/Include -I/opt/local/libexec/qt4/Library/Frameworks/QtOpenGL.framework/Versions/4/Headers -I/opt/local/libexec/qt4/Library/Frameworks/QtGui.framework/Versions/4/Headers -I/opt/local/include/eigen3 -I/opt/local/libexec/qt4/Library/Frameworks/QtCore.framework/Versions/4/Headers -I/opt/local/include/eigen3 -I/opt/local/libexec/qt4/include -I/System/Library/Frameworks/OpenGL.framework/Headers -I/System/Library/Frameworks/AGL.framework/Headers/ -I/opt/local/include -F/opt/local/libexec/qt4/Library/Frameworks -F/opt/local/libexec/qt4/lib -o objects/cgaladv.o src/cgaladv.cc
:info:build clang: warning: optimization flag '-frounding-math' is not supported [-Wignored-optimization-argument]
:info:build 1 error generated.
:info:build make: *** [objects/CSGTreeEvaluator.o] Error 1

[murrayE]

main.log

[ryandesign (Ryan Carsten Schmidt)]

Maybe updating the port would be a first step toward trying to fix this.

[LenoreHorner]

The increment to openscad-devel @2018.04-1_3 has multiple errors on Big Sur with Xcode 12.5.1. Version 2021.01 exists on openscad website. Not having ever built a port before, I don't think I'm qualified to test whether switching to the newer version fixes these errors or not. (And newest version seems still not to be M1 compatible.) I've attached the log in case it's helpful to someone. (Well I would if I could find the attachment button. Ok, I found the attachment button, but that makes it look like attachment to someone else's comment. Weird. Mine is the one called OpenSCAD-devel_main.log.)