在Debian 7.0中使用libcrypto用g ++编译c ++程序

Question

I have a problem with a program when trying to comile it using g++ . This is the command :

root@server1:/home# g++ -o ssh2main ssh2main.cpp ssh2connect.cpp -static -lssh2 -L/usr/lib/x86_64-linux-gnu/libcrypto.so.1.0.0 -lcrypto -ldl -lz -Wno-write-strings;

And this is the output that i get :

/usr/bin/ld: cannot find -lcrypto
collect2: error: ld returned 1 exit status

I already run apt-get libcrypt* and i see that it is installed.

root@server1: locate crypt
/lib/libcryptsetup.so.4
/lib/libcryptsetup.so.4.2.0

...

/lib/x86_64-linux-gnu/libcrypt-2.19.so
/lib/x86_64-linux-gnu/libcrypt.so.1
/lib/x86_64-linux-gnu/libgcrypt.so.11
/lib/x86_64-linux-gnu/libgcrypt.so.11.7.0
/lib/x86_64-linux-gnu/libgcrypt.so.20
/lib/x86_64-linux-gnu/libgcrypt.so.20.0.3

...

/var/lib/dpkg/info/cryptsetup-bin.list
/var/lib/dpkg/info/cryptsetup-bin.md5sums
/var/lib/dpkg/info/libcryptsetup4.list
/var/lib/dpkg/info/libcryptsetup4.md5sums
/var/lib/dpkg/info/libcryptsetup4.postinst
/var/lib/dpkg/info/libcryptsetup4.postrm
/var/lib/dpkg/info/libcryptsetup4.shlibs
/var/lib/dpkg/info/libcryptsetup4.symbols
/var/lib/dpkg/info/libgcrypt11:amd64.list
/var/lib/dpkg/info/libgcrypt11:amd64.md5sums
/var/lib/dpkg/info/libgcrypt11:amd64.postinst
/var/lib/dpkg/info/libgcrypt11:amd64.postrm
/var/lib/dpkg/info/libgcrypt11:amd64.shlibs
/var/lib/dpkg/info/libgcrypt11:amd64.symbols
/var/lib/dpkg/info/libgcrypt20-dev.list
/var/lib/dpkg/info/libgcrypt20-dev.md5sums
/var/lib/dpkg/info/libgcrypt20:amd64.list
/var/lib/dpkg/info/libgcrypt20:amd64.md5sums
/var/lib/dpkg/info/libgcrypt20:amd64.postinst
/var/lib/dpkg/info/libgcrypt20:amd64.postrm
/var/lib/dpkg/info/libgcrypt20:amd64.shlibs
/var/lib/dpkg/info/libgcrypt20:amd64.symbols
/var/lib/dpkg/info/libk5crypto3:amd64.list
/var/lib/dpkg/info/libk5crypto3:amd64.md5sums
/var/lib/dpkg/info/libk5crypto3:amd64.postinst
/var/lib/dpkg/info/libk5crypto3:amd64.postrm
/var/lib/dpkg/info/libk5crypto3:amd64.shlibs
/var/lib/dpkg/info/libk5crypto3:amd64.symbols

The thing is that on CentOS 5.5, 5.7 it works with no problem. What am i doing wrong? How can i solve this?

Thanks.

Answer 1

What you are seeing is libcrypt of GNU, not libcrypto

Install libssl-dev package. I am assuming package name in ubuntu and debian are same. otherwise, you need to install corresponding ssl-dev pkg for you platform

Answer 2

/usr/bin/ld: cannot find -lcrypto    

I already run apt-get libcrypt* and i see that it is installed.

try -lcrypt

I also noticed that you do not have a -L for the link path directory. Is the correct path in your default setting?