plantuml @1.2020.11: Unsupported major.minor version 52.0

[cctile (Charles Choi)]

Unable to install plantuml on macports 2.6.4 on Big Sur after upgrade as described in wiki:Migration

[jmroot (Joshua Root)]

Not sure if the problem is in plantuml or in ant.

[jmroot (Joshua Root)]

Interestingly, this succeeded on the buildbot: ​https://build.macports.org/builders/ports-11_x86_64-builder/builds/20211/steps/install-port/logs/stdio

[cctile (Charles Choi)]

Warning messages when I try to install plantuml

cchoi@cchoi-C02T90MGG8WL:~/Projects/Tile/Documents/StatusReports> sudo port install plantuml
Warning: The macOS 11.2 SDK does not appear to be installed. Ports may not build correctly.
Warning: You can install it as part of the Xcode Command Line Tools package by running `xcode-select --install'.
--->  Computing dependencies for plantuml
--->  Fetching archive for plantuml
--->  Attempting to fetch plantuml-1.2020.11_0.darwin_20.noarch.tbz2 from https://ywg.ca.packages.macports.org/mirror/macports/packages/plantuml
--->  Attempting to fetch plantuml-1.2020.11_0.darwin_20.noarch.tbz2 from https://kmq.jp.packages.macports.org/plantuml
--->  Attempting to fetch plantuml-1.2020.11_0.darwin_20.noarch.tbz2 from https://mse.uk.packages.macports.org/plantuml
--->  Fetching distfiles for plantuml
--->  Verifying checksums for plantuml
--->  Extracting plantuml
--->  Configuring plantuml
--->  Building plantuml
Error: Failed to build plantuml: command execution failed
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_java_plantuml/plantuml/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets to report a bug.
Error: Processing of port plantuml failed
cchoi@cchoi-C02T90MGG8WL:~/Projects/Tile/Documents/StatusReports> 

[cctile (Charles Choi)]

Digging deeper, it looks like the installer is getting confused by older installs of Java. After removing the old installs of Java, the install of plantuml worked with the openjdk port.