Comments (1)
For large projects, the way to go is the use of gclang https://github.com/SRI-CSL/gllvm.
gclang allows you to generate a single bitcode file from an arbitrary project as long as it uses standard build systems such as make or cmake.
For instance, for a project that uses make
and generates the executable myexecutable
, using gclang can be as easy as:
CC=gclang ./configure
make
make install
And then, just type get-bc myexecutable
where myexecutable
is in the install directory.
This will generate a file myexecutable.bc
that you can pass to clam.py
.
The only thing that you have to make sure is that gclang points to clang-14 (see gclang doc for that).
I also typically pass -O1
because clam.py might not like -O2 or -O3 and prefers to do its own optimizations.
CC=gclang CFLAGS="-O1" ./configure
make
make install
Let me know if you have more questions. I have used gclang many times in the past to analyze multiple real projects and it was really easy 99% of the cases.
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