| # Source file. | |
| src="$(printf %q "$1")" | |
| shift | |
| # Output file the compiler expects. | |
| out="$(printf %q "$1")" | |
| shift | |
| # Create the file the compiler expects. It will check syntax. | |
| >"$out" | |
| cpp='cpp' | |
| opts='' | |
| while test "$#" != 0; do | |
| case "$1" in | |
| # Extract the option for the path to cpp. | |
| --cpp) shift; cpp="$(printf %q "$1")" ;; | |
| # Extract the option for our own output file. | |
| --out) shift; out="$(printf %q "$1")" ;; | |
| # Collect the rest of the command line. | |
| *) opts="$opts $(printf %q "$1")" ;; | |
| esac | |
| shift | |
| done | |
| # Execute the real preprocessor tool. | |
| eval "exec $cpp $src $out $opts" | |