On Mon, Mar 14, 2011 at 23:17, xiaoxiao wrote:
> I've been using ccache recently, in order to decline the compilation
> time for a certain module. In this module, with the help of the greatest
> ccache, the time could be shorten to 5 mins from 40 mins without any
> modification. However, even if the output of all the source files are
> cached, we have to take about the 5 mins mainly in the linking action,
> eg: a.o -> test_a(exetuable). Since I have noticed that ccache do not
> take the .o file as a input to be cached. The actions as linking would
> certainly not be ccached, and thus the time for linking would not
> significant reduced.
> Given this background, I have a few questions to talk about. Have anyone
> ever considered to build up a mapping between .o file and its output? If
> so, why ccache did not provide such feature. If not, do you think it is
> a reasonable feature for ccache to reduce the time for linking in a
> compilation?

try switching to gold
-mike
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