At option           allowed:
                    (all support programs also accept --help (-h) and
                     --version (-v))

--compile, -c       calls icm-comp
                    --define, -d,       -P 
                                        (source is a pre-processed file, in
                                         which case --define/-d cannot be
                                         specified)

--dependencies, -d  anything: forwarded to icm-dep

--execute, -e       calls icm-exec
                    --no-version-check, -n  
                    (icmake/bim-file versions may differ)

                    args/options after the bim-file are passed on to the
                    bim-file 

--force, -f         same as --compile, but compilation is forced.

--multicomp, -m     calls icm-multicomp
                    --nr, -n; 
                    --quiet, -q; 
                    --threads -t #threads

--preprocess, -p    --define Symbol, -d
                    define Symbol having value 1 in the preprocessed file

--spch, -S          calls icm-spch [options] dest ['compiler']
                    Normally called 3 times, with options, respectively, 
                        -l, -p, and -s.
                                           $1      $2
                    --list -l   :  writes the header filenames to 'dest'
                        --classes=file, -c: file contains dirnames to inspect
                        --guard=name, -g:   name of the used include guard 
                        --internal=.ext, -i: extensions of headers to compile
                        --keep=regex (-k): do not inspect/precompile the files
                                            specified in regex. For multi-
                                            regexes use (regex1)|(regex2) 
                        --no-topdir, -n

                    --precompile=file, -p   'file' is --list's 'dest' arg.
                                            (not needed via icmake: icmake
                                             determines 'file' from 'dest'
                        --options=opts, -o  prefix 'opts' to the g++ command
                                before the '-x c++-header compilation
                    
                    --soft-links=file -s    'file' is identical to
                                --precompile's 'file' option value

                    --warn, -w:     CHECK: used with --list? -p? -s?

--source, -s        calls icm-comp. then icm-exec
                    icm-comp's -d options may be specified (first), then, if
                    icm-exec options must be specified: after --execute (or
                    -e)

-t tempspec         for scripts [to do: see icmake(1)]

--unassemble -u     calls icmun




