The usual form of the `gnatmake' command is
$ gnatmake [<switches>] <file_name> [<file_names>] [<mode_switches>]
The only required argument is one file_name, which specifies a compilation unit that is a main program. Several file_names can be specified: this will result in several executables being built. If switches are present, they can be placed before the first file_name, between file_names or after the last file_name. If mode_switches are present, they must always be placed after the last file_name and all switches.
If you are using standard file extensions (.adb and
.ads), then the
extension may be omitted from the file_name arguments. However, if
you are using non-standard extensions, then it is required that the
extension be given. A relative or absolute directory path can be
specified in a file_name, in which case, the input source file will
be searched for in the specified directory only. Otherwise, the input
source file will first be searched in the directory where
`gnatmake' was invoked and if it is not found, it will be search on
the source path of the compiler as described in
Search Paths and the Run-Time Library (RTL).
All `gnatmake' output (except when you specify `-M') is sent to
stderr. The output produced by the
`-M' switch is sent to stdout.