orbit-idl-2: Missing argument for --version

Usage: orbit-idl-2 [OPTION?] <IDL files> Help Options: -h, --help Show help options --help-all Show all help options --help-libIDL Show libIDL options --help-cpp Show preprocessor options Application Options: -v, --version Output compiler version and serial -l, --lang=LANG Output language (default is C) -d, --debug=LEVEL Debug level (0 to 4) --idlwarnlevel=LEVEL IDL warning level (0 to 4, default is 2) --showcpperrors Show CPP errors --nostubs Don't output stubs --noskels Don't output skels --nocommon Don't output common --noheaders Don't output headers --noidata Don't generate Interface type data -i, --imodule Output only an imodule file --add-imodule Output an imodule file --skeleton-impl Output skeleton implementation --backenddir=DIR Override IDL backend library directory --onlytop Inhibit includes --pidl Treat as Pseudo IDL --nodefskels Don't output defs for skels in header --deps=FILENAME Generate dependency info suitable for inclusion in Makefile --headerguardprefix=PREFIX Prefix for #ifdef header guards. Sometimes useful to avoid conflicts. --output-dir=DIR Where to put generated files. This directory must exist.