Hello Jeff, thanks for the answer, I solved it by also importing the
library when compiling the shared one, I put my codes so that someone wants
to try to do the same as me.
Make file.o
===
g++ -c -g3 -Wall -Werror -Wextra -fpic file.cpp -l:libcryptopp.a
Make file.so
g++ -shared -o file.so file.o -lcryptopp -lpthread
Now you can get your shared c++ library so you can use it in any language,
in this case I use .so since I am in a linux environment.
Thanks for the answer, regards,
El martes, 16 de agosto de 2022 a las 21:25:06 UTC-5, Jeffrey Walton
escribió:
> On Tue, Aug 16, 2022 at 1:54 PM Cristian Rolando Reyes Chapoñan
> wrote:
> >
> > Hello everyone, a question when I try to use the package and compile it
> in shared form (.so)
> > and I want to read it I get this:
> > undefined symbol:
> _ZN8CryptoPP21SimpleKeyingInterface6SetKeyEPKhmRKNS_14NameValuePairsE
> >
> > in which I investigate and it says that I have to compile it in such a
> way that the symbols must be together with the compiled one, I have tried
> everything to compile it according to the forums and documentations with
> the command "-g" or "-O2" but I still cannot read the file
> >
> > My build commands are these:
> >
> > g++ -DNDEBUG -g -O2 -Wall -Wextra -o node.o node.cpp -l:libcryptopp.a
> > g++ -shared -o node.so node.o
> >
> > I would be very grateful for your great help.
> >
> > Versions install:
> > libcrypto++6
> > libcrypto++-utils
> > libcrypto++-dev
> > libcrypto++-doc
> > libcrypto++6-dbg
> >
> > My code:
> > File name: node.cpp
> >
> > #include "cryptopp/modes.h"
> > #include "cryptopp/aes.h"
> > #include "cryptopp/filters.h"
> > #include "cryptopp/hex.h"
>
> I think you are missing .
>
> You might also be interested in https://cryptopp.com/wiki/Wrapper_DLL .
>
> Jeff
>
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