I'm running Slackware-14.2/x86_64 and R-4.0.2-x86_64-1_SBo.
Updating OpenMx failed:
omxState.cpp:1230:82: required from here
omxState.cpp:1229:17: error: cannot call member function ‘void ConstraintVec::eval(FitContext*, double*, double*)’ without object
eval(fc2, result.data(), 0);
/usr/lib64/R/etc/Makeconf:174: recipe for target 'omxState.o' failed
make: *** [omxState.o] Error 1
ERROR: compilation failed for package ‘OpenMx’
* removing ‘/usr/lib64/R/library/OpenMx’
* restoring previous ‘/usr/lib64/R/library/OpenMx’
The downloaded source packages are in
Updating HTML index of packages in '.Library'
Making 'packages.html' ... done
In install.packages("OpenMx") :
installation of package ‘OpenMx’ had non-zero exit status