Do you know tool building tree of include files in project\file?

Question

Say, I'd like to have a tool (or script?) taking project (or .h file) and building searchable tree of "includes" included into it (of included into of included into and so so on). Is there exist something like this? Should I write this by myself [of course I am :), but may be somebody had it already written or may be has an idea how to get it]?

Answer 1

I know this is an old question, a slightly more useful output than the gcc/g++ -E output alone would also used the -H flag (instead or in addition to):

g++ -H {my -I and other flags} -E -o /dev/null file.cpp

here is a sample output, tree structure helps figure out who included what as a bonus it also lists at the bottom which files may benefit from an include guard

. generated/gen-cpp/File.h
.. /usr/include/thrift/TProcessor.h
... /usr/lib/gcc/x86_64-redhat-linux/4.4.6/../../../../include/c++/4.4.6/string
.... /usr/lib/gcc/x86_64-redhat-linux/4.4.6/../../../../include/c++/4.4.6/x86_64-redhat-linux/bits/c++config.h
..... /usr/include/bits/wordsize.h
..... /usr/lib/gcc/x86_64-redhat-linux/4.4.6/../../../../include/c++/4.4.6/x86_64-redhat-linux/bits/os_defines.h
...... /usr/include/features.h
....... /usr/include/sys/cdefs.h
........ /usr/include/bits/wordsize.h
....... /usr/include/gnu/stubs.h
........ /usr/include/bits/wordsize.h
........ /usr/include/gnu/stubs-64.h
..... /usr/lib/gcc/x86_64-redhat-linux/4.4.6/../../../../include/c++/4.4.6/x86_64-redhat-linux/bits/cpu_defines.h
.... /usr/lib/gcc/x86_64-redhat-linux/4.4.6/../../../../include/c++/4.4.6/bits/stringfwd.h

...