Re: [ccache] Help with adding support to custom language

2019-01-03 Thread Joel Rosdahl via ccache
On Thu, 3 Jan 2019 at 23:02, Andre Calfa  wrote:
> One of the motivations is that our current compiler cache is only supported
> locally for each build server. In some cases the compilation of a single
> input file takes a long time due to its size, and we cannot avoid its
> compilation when the correct cached cpp and h are located in a different
> build server. So if we can take advantage of using a distributed approach
> which ccache supports, that would be great.

No, ccache does not support distributed compilation, unless you use a cache
directory shared over the network (e.g. using NFS), which I assume you could
use for your compiler cache as well. Are you thinking about sccache, distcc or
Icecream?

> Unfortunately our compiler is not GCC like, as our flags are not analogous to
> the GCC ones. I am guessing this would require lots of changes in ccache code
> to make it work then?

Yes, to the point that it will be an almost completely different program.

-- Joel

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Re: [ccache] Help with adding support to custom language

2019-01-03 Thread Andre Calfa via ccache
Hi Joel,

Thank you for your reply.

>
> What problems do you see with your own compiler cache that makes you
> consider
> using ccache instead?
>
One of the motivations is that our current compiler cache is only supported
locally for each build server. In some cases the compilation of a single
input file takes a long time due to its size, and we cannot avoid its
compilation when the correct cached cpp and h are located in a different
build server. So if we can take advantage of using a distributed approach
which ccache supports, that would be great.

>
> Does your compiler behave similar to GCC, for instance using "-c" for
> compilation, "-E" for generating preprocessed output similar to that of
> GCC,
> "-x" for selecting source language, etc? If not, my guess is that it's not
> really feasible.
>

Unfortunately our compiler is not GCC like, as our flags are not analogous
to the GCC ones. I am guessing this would require lots of changes in ccache
code to make it work then?
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Re: [ccache] Help with adding support to custom language

2019-01-03 Thread Joel Rosdahl via ccache
Hi Andre,

On Thu, 3 Jan 2019 at 20:39, Andre Calfa via ccache
 wrote:
> We currently have our own compiler cache for the compiler we developed, but
> we would like to switch to ccache if possible. Our compiler takes as input
> a custom language and generates both a .cpp file and a .h file. I would
> like to know if it would be feasible for me to work on applying a patch to
> ccache so that I can use ccache for this compiler, and if so, would there
> be any documentation/example that I should follow to get this implemented?

What problems do you see with your own compiler cache that makes you consider
using ccache instead?

Does your compiler behave similar to GCC, for instance using "-c" for
compilation, "-E" for generating preprocessed output similar to that of GCC,
"-x" for selecting source language, etc? If not, my guess is that it's not
really feasible.

There is no documentation or examples for adding new compiler support to
ccache, mainly because ccache in a sense only supports one ("GCC and compilers
that behave similar enough").

-- Joel

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