On Sunday, March 20, 2016 at 5:22:28 PM UTC-4, Gaetano Mendola wrote:
>
> The following snippet:
>
> #include <cryptopp/hex.h>
> int main() {
> CryptoPP::HexDecoder myHexDecoder;
> }
>
>
> does not link with clang++-3.8/clang++3.7 while it links just fine with
> gcc5.3.1
>
> $ apt-show-versions libcrypto++-dev
> libcrypto++-dev:amd64/xenial 5.6.1-9 uptodate
>
>
> The error:
> $ clang++-3.8 main.cpp -lcrypto++
> /tmp/main-1ac893.o: In function
> `CryptoPP::Unflushable<CryptoPP::Filter>::Flush(bool, int, bool)':
> main.cpp:(.text._ZN8CryptoPP11UnflushableINS_6FilterEE5FlushEbib[_ZN8CryptoPP11UnflushableINS_6FilterEE5FlushEbib]+0xf):
> undefined reference to `CryptoPP::DEFAULT_CHANNEL'
> clang: error: linker command failed with exit code 1 (use -v to see
> invocation)
>
>
I also should have mentioned.... If the distro builds Crypto++ with the GCC
compiler, then that's what you should use (and you should not use Clang).
Mixing and matching compilers is a bad idea. Also see
https://cryptopp.com/wiki/Config.h#5.6.3_Recommendations .
Yo can build the library and program with Clang. The thing is both should
be built with Clang, and it sounds like that means you have to build the
library from scratch using Clang. For building the library, see
https://cryptopp.com/wiki/GNUmakefile.
Jeff
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