Crypto++ in Eclipse Undefined Reference

问题

I'm trying to use Crypto++ for my Eclipse C++ project using the MinGW toolchain. Problem is, whenever I try to use crypto functions, I get flooded with "undefined reference" errors. Has anyone experienced this before? This is the what I'm getting (truncated):

UPDATED

g++ -L "C:\\Libraries\\crypto++\\Win32\\DLL_Output\\Debug" -lpthread -lcryptopp -o "Grum Net.exe" "src\\Vault\\VaultNode.o" "src\\User.o" "src\\Grum Net.o" 
src\Grum Net.o: In function `ZN8CryptoPP18HashTransformationD2Ev':
C:/Libraries/crypto++/cryptlib.h:531: undefined reference to `vtable for CryptoPP::HashTransformation'
src\Grum Net.o: In function `ZN8CryptoPP18HashTransformationC2Ev':
C:/Libraries/crypto++/cryptlib.h:531: undefined reference to `CryptoPP::Algorithm::Algorithm(bool)'
C:/Libraries/crypto++/cryptlib.h:531: undefined reference to `vtable for CryptoPP::HashTransformation'
src\Grum Net.o: In function `ZN8CryptoPP31IteratedHashWithStaticTransformIjNS_10EnumToTypeINS_9ByteOrderELi0EEELj64ELj16ENS_5Weak13MD5ELj0ELb0EE4InitEv':
C:/Libraries/crypto++/iterhash.h:90: undefined reference to `CryptoPP::Weak1::MD5::InitState(unsigned int*)'
src\Grum Net.o:Grum Net.cpp:(.rdata$_ZTVN8CryptoPP5Weak13MD5E[__ZTVN8CryptoPP5Weak13MD5E]+0x18): undefined reference to `CryptoPP::IteratedHashBase<unsigned int, CryptoPP::HashTransformation>::Update(unsigned char const*, unsigned int)'
src\Grum Net.o:Grum Net.cpp:(.rdata$_ZTVN8CryptoPP5Weak13MD5E[__ZTVN8CryptoPP5Weak13MD5E]+0x1c): undefined reference to `CryptoPP::IteratedHashBase<unsigned int, CryptoPP::HashTransformation>::CreateUpdateSpace(unsigned int&)'
src\Grum Net.o:Grum Net.cpp:(.rdata$_ZTVN8CryptoPP5Weak13MD5E[__ZTVN8CryptoPP5Weak13MD5E]+0x24): undefined reference to `CryptoPP::IteratedHashBase<unsigned int, CryptoPP::HashTransformation>::Restart()'
src\Grum Net.o:Grum Net.cpp:(.rdata$_ZTVN8CryptoPP5Weak13MD5E[__ZTVN8CryptoPP5Weak13MD5E]+0x44): undefined reference to `CryptoPP::IteratedHashBase<unsigned int, CryptoPP::HashTransformation>::TruncatedFinal(unsigned char*, unsigned int)'
src\Grum Net.o:Grum Net.cpp:(.rdata$_ZTVN8CryptoPP5Weak13MD5E[__ZTVN8CryptoPP5Weak13MD5E]+0x4c): undefined reference to `CryptoPP::HashTransformation::TruncatedVerify(unsigned char const*, unsigned int)'

回答1:

your -L is inside of your quotes. Have you tried:

g++ -L "C:\\Libraries\\crypto++" -lpthread -o "Grum Net.exe" "src\\VaultNode.o" "src\\User.o" "src\\Grum Net.o" 

Now that g++ know where to look for your libs, you'll also need to specify which libs from the C:\Libraries\crypto++ directory you'd like to use:

g++ -L "C:\\Libraries\\crypto++" -lcryptolib1 -lcryptolib2 -lpthread -o "Grum Net.exe" "src\\VaultNode.o" "src\\User.o" "src\\Grum Net.o" 

来源：https://stackoverflow.com/questions/14058920/crypto-in-eclipse-undefined-reference