neglected dep update from
r87a6cad20c90:
that rev also forces nightly rust due to https://github.com/rust-lang/rust/issues/23121
if(WIN32 AND NOT UNIX)
install(DIRECTORY .
DESTINATION ${target_library_install_dir}
FILES_MATCHING PATTERN "*.dll" PATTERN "*.ico"
)
endif(WIN32 AND NOT UNIX)