SSL linking problems when building

[gl-yziquel]

Hi.

I just tried to build reindeer as I wish to use ocamlrep. I got linking problems when trying to build it out of the box on ubuntu 23.04.

  = note: /usr/bin/ld: /home/mini-me/home/cellar/reindeer/target/debug/deps/liblibgit2_sys-18f7effd1c8d5dbd.rlib(openssl.o): in function `openssl_init':                                                                                      
          /home/mini-me/.cargo/registry/src/index.crates.io-6f17d22bba15001f/libgit2-sys-0.13.4+1.4.2/libgit2/src/libgit2/streams/openssl.c:145: undefined reference to `SSL_CTX_ctrl'                                                        
          /usr/bin/ld: /home/yziquel/home/cellar/reindeer/target/debug/deps/liblibgit2_sys-18f7effd1c8d5dbd.rlib(openssl.o): in function `verify_server_cert':                                                                                
          /home/mini-me/.cargo/registry/src/index.crates.io-6f17d22bba15001f/libgit2-sys-0.13.4+1.4.2/libgit2/src/libgit2/streams/openssl.c:401: undefined reference to `SSL_get1_peer_certificate'                                           
          /usr/bin/ld: /home/yziquel/home/cellar/reindeer/target/debug/deps/liblibgit2_sys-18f7effd1c8d5dbd.rlib(openssl.o): in function `openssl_connect':                                                                                   
          /home/mini-me/.cargo/registry/src/index.crates.io-6f17d22bba15001f/libgit2-sys-0.13.4+1.4.2/libgit2/src/libgit2/streams/openssl.c:531: undefined reference to `SSL_ctrl'                                                            
          /usr/bin/ld: /home/yziquel/home/cellar/reindeer/target/debug/deps/liblibgit2_sys-18f7effd1c8d5dbd.rlib(openssl.o): in function `openssl_certificate':                                                                               
          /home/mini-me/.cargo/registry/src/index.crates.io-6f17d22bba15001f/libgit2-sys-0.13.4+1.4.2/libgit2/src/libgit2/streams/openssl.c:545: undefined reference to `SSL_get1_peer_certificate'                                           
          /usr/bin/ld: /home/mini-me/home/cellar/reindeer/target/debug/deps/liblibssh2_sys-6611c950b2ef2b16.rlib(openssl.o): in function `_libssh2_ed25519_new_private_frommemory':                                                           
          /home/mini-me/.cargo/registry/src/index.crates.io-6f17d22bba15001f/libssh2-sys-0.2.23/libssh2/src/openssl.c:1835: undefined reference to `EVP_PKEY_get_id'                                                                          
          /usr/bin/ld: /home/mini-me/home/cellar/reindeer/target/debug/deps/liblibssh2_sys-6611c950b2ef2b16.rlib(openssl.o): in function `_libssh2_pub_priv_keyfile':                                                                         
          /home/mini-me/.cargo/registry/src/index.crates.io-6f17d22bba15001f/libssh2-sys-0.2.23/libssh2/src/openssl.c:3001: undefined reference to `EVP_PKEY_get_id'                                                                          
          /usr/bin/ld: /home/mini-me/home/cellar/reindeer/target/debug/deps/liblibssh2_sys-6611c950b2ef2b16.rlib(openssl.o): in function `_libssh2_pub_priv_keyfilememory':                                                                   
          /home/mini-me/.cargo/registry/src/index.crates.io-6f17d22bba15001f/libssh2-sys-0.2.23/libssh2/src/openssl.c:3211: undefined reference to `EVP_PKEY_get_id'                                                                          
          /usr/bin/ld: /home/mini-me/home/cellar/reindeer/target/debug/deps/liblibssh2_sys-6611c950b2ef2b16.rlib(mac.o): in function `mac_method_hmac_ripemd160_hash':                                                                        
          /home/mini-me/.cargo/registry/src/index.crates.io-6f17d22bba15001f/libssh2-sys-0.2.23/libssh2/src/mac.c:354: undefined reference to `EVP_ripemd160'                                                                                 
          /usr/bin/ld: /home/mini-me/home/cellar/reindeer/target/debug/deps/liblibssh2_sys-6611c950b2ef2b16.rlib(crypt.o):(.data.rel.ro.libssh2_crypt_method_blowfish_cbc+0x40): undefined reference to `EVP_bf_cbc'                          
          /usr/bin/ld: /home/mini-me/home/cellar/reindeer/target/debug/deps/liblibssh2_sys-6611c950b2ef2b16.rlib(crypt.o):(.data.rel.ro.libssh2_crypt_method_cast128_cbc+0x40): undefined reference to `EVP_cast5_cbc'                        
          collect2: error: ld returned 1 exit status                                                                                                                                                                   

[shayne-fletcher]

thanks for taking the time to file this issue!

unfortunately, it doesn't appear to be reindeer specific or actionable though. it would more likely be better raised on the git2-rs issue tracker (and/or potentially on the rust-openssl issue tracker).

[gl-yziquel]

Hmmmmh.... I indeed experience some failures building git2-rs from git source: it claims it cannot find the libgit2 native library, even though it is installed on my system via ubuntu packages.

I unfortunately do not have the time to multitask back to this at the moment. Which is a shame.

[gilescope]

My solution to this is rustls where possible. OpenSSL is always a PITA.