Re: parallel translation

[Samuel Tardieu <sam@rfc1149.net>]

>>>>> "Jeffrey" == Jeffrey R Carter <spam.jrcarter.not@acm.nospam.org> writes:

Jeffrey> If P1 depends on the body of P2 (perhaps by calling an
Jeffrey> inlined subprogram with -gnatn), then you have a problem
Jeffrey> similar to what you described. I'm not sure how GNAT handles
Jeffrey> this, but perhaps the task compiling P1 can wait until
Jeffrey> appropriate versions of p2.ali and p2.o are created.

As you wrote, GNAT is source based. If P1 depends on the body of P2,
it will use its source file (p2.adb in this case), and this is totally
independant of the compilation of P2 which may well happen in
parallel or after the compilation of P1.

Any unit can be compiled without depending on any other unit
compilation. Moreover, the compiler never reads any ali file. gnatmake
does (to determine what needs to be compiled), and gnatbind does as
well (to determine the elaboration order).

  Sam
-- 
Samuel Tardieu -- sam@rfc1149.net -- http://www.rfc1149.net/