Building osxfuse-3.8.3 failed on macOS Darwin (10.15.4)

[jfb007]

When trying to install osxfuse (and sshfs):

$ sudo port install osxfuse
--->  Computing dependencies for osxfuse
--->  Fetching archive for osxfuse
--->  Attempting to fetch osxfuse-3.8.3_0.darwin_19.x86_64.tbz2 from http://nue.de.packages.macports.org/osxfuse
--->  Attempting to fetch osxfuse-3.8.3_0.darwin_19.x86_64.tbz2 from http://lil.fr.packages.macports.org/osxfuse
--->  Attempting to fetch osxfuse-3.8.3_0.darwin_19.x86_64.tbz2 from http://cph.dk.packages.macports.org/osxfuse
--->  Fetching distfiles for osxfuse
--->  Attempting to fetch osxfuse-48bc246.tar.gz from https://github.com/osxfuse/osxfuse/tarball/48bc246/
--->  Attempting to fetch kext-416c143.tar.gz from https://github.com/osxfuse/kext/tarball/416c143/
--->  Attempting to fetch framework-8b79906.tar.gz from https://github.com/osxfuse/framework/tarball/8b79906/
--->  Attempting to fetch prefpane-095ba9c.tar.gz from https://github.com/osxfuse/prefpane/tarball/095ba9c/
--->  Attempting to fetch fuse-1a1977a.tar.gz from https://github.com/osxfuse/fuse/tarball/1a1977a/
--->  Attempting to fetch support-2cdc560.tar.gz from https://github.com/osxfuse/support/tarball/2cdc560/
--->  Attempting to fetch osxfuse-3.8.3.dmg from https://github.com/osxfuse/osxfuse/releases/download/osxfuse-3.8.3
--->  Verifying checksums for osxfuse                                                
--->  Extracting osxfuse
--->  Applying patches to osxfuse
--->  Configuring osxfuse
--->  Building osxfuse
Error: Failed to build osxfuse: command execution failed
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_fuse_osxfuse/osxfuse/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets to report a bug.
Error: Processing of port osxfuse failed

I already made links, as suggested in related tickets, like

$ cd /Applications/Xcode.app/Contents/Developer/Toolchains/
$ sudo ln -s XcodeDefault.xctoolchain OSX10.{13,15}.xctoolchain

But this did not help!

Thanks a lot for any help - JFB

[jfb007]

/opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_fuse_osxfuse/osxfuse/main.log