[IPOL discuss] 2 cmake questions

[Nicolas Limare]

> You could use the following
> 
> $ cmake -E make_directory build
> $ cmake -E chdir build cmake ../HelloWorld
> $ cmake --build build
> $ rm -rf ./build

Thanks, it's good to know this is possible on recent versions of
cmake. Gabriele also showed me how to remove CMakeStuff with make
clean, I think I have everything I need.

> Something that you could like is the graphivz export of dependencies :
> 
> --graphviz=[file]: Generate graphviz of dependencies.

Ah, a global file-level dependency graph, good.

For people interested in function-level dependencies (a function call
graph), I produced it some time ago for megawave using ncc[1] and a
ncc2dot conversion script (attached). The result was way too large to
be usable, but it may be good for small projects.

[1]http://students.ceid.upatras.gr/~sxanth/ncc/
   debian package "ncc"

make CC="nccgen -ncgcc -ncld -ncfabs"
FUNCTIONS=$(nm -f posix <compiled_file> | grep -Ev "(@@|__)" | cut -d\  -f1)
python ncc2dot.py <compiled_file>.nccout $FUNCTIONS > callgraph.dot
dot -Tpng callgraph.dot > callgraph.png

-- 
Nicolas LIMARE - CMLA - ENS Cachan    http://www.cmla.ens-cachan.fr/~limare/
IPOL - image processing on line                          http://www.ipol.im/
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