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<pre class="lang-c prettyprint"><code><span class="pun">I'm trying to make a C FFI that returns the SHA256 of a string and this is what I get when I try to compile with my library added:
david@ubuntu:~/Projects/UrShop$ urweb urshop
/usr/bin/ld: /usr/local/lib/liburweb.so: undefined reference to symbol '<a class="moz-txt-link-abbreviated" href="mailto:SHA256_Init@@OPENSSL_1.0.0">SHA256_Init@@OPENSSL_1.0.0</a>'
/usr/bin/ld: note: '<a class="moz-txt-link-abbreviated" href="mailto:SHA256_Init@@OPENSSL_1.0.0">SHA256_Init@@OPENSSL_1.0.0</a>' is defined in DSO /usr/lib/gcc/x86_64-linux-gnu/4.6/../../../x86_64-linux-gnu/libcrypto.so so try adding it to the linker command line
/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../x86_64-linux-gnu/libcrypto.so: could not read symbols: Invalid operation
collect2: ld returned 1 exit status
What step am I missing?
</span><span class="pln"></span></code></pre>
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