[pph] Add header files to pph.map (issue4639073)

Diego Novillo dnovillo@google.com
Mon Jun 27 17:34:00 GMT 2011

On Mon, Jun 27, 2011 at 13:13, Gabriel Charette <gchare@google.com> wrote:
> On Mon, Jun 27, 2011 at 10:06 AM, Diego Novillo <dnovillo@google.com> wrote:
>> On Mon, Jun 27, 2011 at 13:01, Gabriel Charette <gchare@google.com> wrote:
>>> Couldn't we have headers look for their corresponding .pph file by
>>> default when -fpph-map is on? (especially since pph.map is only
>>> temporary for the implementation phase)
>> The problem is with headers that include other headers.  We want to
>> limit the generation of images to specific headers.  Given that we are
>> in this initial implementation phase, the simplest approach is to
>> remember to update pph.map.
> Well in what I'm proposing we only use the pph file if it was actually
> generated before (we don't generate it if it's not there). Are there
> any situations where we have a corresponding pph file, but don't
> actually want to use it when the fpph-map flag is on? Seems unlikely
> as we put all the pph files in the pph map for now anyways...

Headers include other headers.  We are not generating PPH for all headers.

The mapping file also allows us to control what happens when
generating a PPH file that emits #include directives itself.  Some of
those we want to have referenced as PPH, but not all.

It's really easier for us to remember to update the mapping file
rather than adding some automatic detection that would have to be
removed later.


More information about the Gcc-patches mailing list