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CppCompileErrorOpensslConfHNoSuchFileOrDirectory.md

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(C++) openssl/conf.h: No such file or directory

 

Compile error.

 

 

 

 

 

Full error message

 

/usr/include/boost/asio/ssl/detail/openssl_context_service.hpp:74: undefined reference to 'SSLv2_method'

 

 

 

 

 

Cause

 

IDE: Qt Creator 1.2.1

Project type: Qt4 Console Application

Selected required modules: QtCore

Compiler: G++ 4.4.1

Boost version: 1.38.0.

 

The following code caused the error:

 

#include <openssl/conf.h>

 

 

 

 

 

Solution

 

The openssl folder is not set as an include folder. You can find it using any file finder (for example, Catfish under Xubuntu, or Windows Find under Microsoft Windows).

 

In Qt Creator, you can set it as an include folder by editing the project file (for example, MyProject.pro). To start editing it, double-click it.

 

Add the following line:

 

INCLUDEPATH += ~/../../usr/include

 

Note that in this example the location of the include folder was was '~/../../usr/lib'.