I have a class X that represents a set of Value* in a specific way.
That class is stored in two files: X.cpp and X.h
The class X works perfectly in a pass that I already have.
However, I need to use that class in some other passes, but I don't
want to have a copy of X.cpp and X.h in every pass folder.
I've tried to do the following:
- put X.h in the folder <llvm_root>/include/lllvm/Analysis
- put X.cpp in the folder <llvm_root>/lib/Analysis
- go to <llvm_root> and execute "make", to compile everything again,
with my new files
- change the includes of my passes to replace #include "X.h" by
- compile my pass again
Until this point everything works fine. Although everything compiles
without any warnings,
I can't run my pass after I change the location of the source code of
the class X.
When I use the command:
raphael@ubuntu:~/$ opt -f -load myPassModule.so -myPass test.bc
I get the following error message:
opt: symbol lookup error:
undefined symbol: _ZN4llvm5GraphC1Ei
I know that this error message means that X.h was successfully linked
to myPass, but when I call opt, opt can't find the actual
of the class and the methods declared in the header file.
Does anybody know what I did wrong or what I should do to make this work?