RFR 8003161: Cannot build jdk8/build using the new build system after latest merge.

[Fredrik Öhrström]

2012-11-08 11:52, David Holmes skrev:
> I don't understand this:
>
>     $$(shell $(MKDIR) -p $$($1_BIN) && $(RM) 
> $$($1_BIN)/_the.$$($1_JARNAME)_include)
>
> If you have to create the directory there can't possibly be anything 
> to rm. ???

Two things need to be established before ListPathsSafely is executed.
The output dir must exist, and the previous file must be empty/removed.

So  you are right and to do it properly, you shoud not execute the RM
if you successfully created the dir. That command line would look like this:

$$(shell $(MKDIR) $$($1_BIN) 2> /dev/null || $(RM) 
$$($1_BIN)/_the.$$($1_JARNAME)_include)

The extra complexity is just not worth it methinks, since saving a 
single RM per jar will not give you a noticeable speedup....

//Fredrik