Github user calebj commented on the issue:
https://github.com/apache/nifi-minifi-cpp/pull/131
I'm building on Cloud9, which has Ubuntu 14.04 with GCC 4.8.4, against
OpenSSL version is 1.0.1f-1ubuntu2.22 if it helps.
The specific error was:
```
[ 45%] Building C object
thirdparty/civetweb-1.9.1/src/CMakeFiles/c-library.dir/civetweb.c.o
/home/ubuntu/workspace/thirdparty/civetweb-1.9.1/src/civetweb.c: In
function âssl_get_client_cert_infoâ:
/home/ubuntu/workspace/thirdparty/civetweb-1.9.1/src/civetweb.c:11873:4:
error: implicit declaration of function âEVP_Digestâ
[-Wimplicit-function-declaration]
if (!EVP_Digest(
^
make[2]: ***
[thirdparty/civetweb-1.9.1/src/CMakeFiles/c-library.dir/civetweb.c.o] Error 1
```
---