Macosx builds fail in GenerateLinkOptData.gmk

All macosx builds in CI currently fail with the below. The classlist file doesn't seem to have been created.

cp: /Users/erik/hg/jdk/build/macosx-x64/support/link_opt/classlist: No such file or directory
GenerateLinkOptData.gmk:79: recipe for target '/Users/erik/hg/jdk/build/macosx-x64/support/modules_libs/java.base/classlist' failed
make[3]: *** [/Users/erik/hg/jdk/build/macosx-x64/support/modules_libs/java.base/classlist] Error 1
make[3]: *** Waiting for unfinished jobs....
make/Main.gmk:451: recipe for target 'generate-link-opt-data' failed
make[2]: *** [generate-link-opt-data] Error 2
make[2]: *** Waiting for unfinished jobs....