[Scons-users] [c++] Automatically choosing sources for linking
tshortik at gmx.de
Fri Feb 28 14:10:00 EST 2014
On 28.02.2014 17:48, Viktor Dick wrote:
> thanks for the quick answer. One problem with this solution is that
> there are compiler flags (mostly in src/define.h) that, among other
> things, control the inclusion of files, so the parsing would be more
> complicated that just grepping for #include (it's not even only #ifdef
> or #ifndef, sometimes it is "#if defined ... and #defined ..." or
> something alike). Delegating this task to gcc -MM (the dependency
> generator of gcc), which should be able to ignore the rest of the file
> and only look at the relevant parts, was quite slow, so I am not sure if
> this will work. I even managed to reduce the number of times that gcc is
> called to about 3 or 4 in order to reduce overhead from the call itself,
> but then the argument list became long and it still took a lot of time.
> Is it maybe possible to call the scons dependency scanner so it can find
> the correct includes, respecting compiler switches?
I have added a first draft of a recipe for this to our Wiki at
. Please check it out, and see if you can take it from there.
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