2.4 Building more than one program

Often, the same set of source files are used to build several related programs. Mosmake handles such a situation seamlessly: just add a %PROGRAM flag to the `Dependencies' line for each unit that is the main unit of a program.

The name of the binary for a program will be the same as the name of its main unit. This cannot be overridden, sorry. But noone says that the unit Mosmake thinks is the main unit must be the one doing the work. You can have

binary: realmain %PROGRAM

in `Dependencies' and have an empty `binary.sml' file. Then `realmain.sml' will effectively become the main program.

By default, `make all' will build all the programs known to Mosmake. If you want to exclude some program from the build (say, because its source is under development and doesn't always compile without errors), add the flag %OPTIONAL to the `Dependencies' line together with %PROGRAM. Then `make all' will not build the program, but you can still build it explicitly by `make programname' (or better: `make programname,smartmade'; see smartmade, for an explanation).