On 06/15/2017 05:36 PM, James via Boost-users wrote:

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I am trying to build an application that uses the boost libraries. I am seeing build error C3083 in bind_mf_cc.hpp.

The error states:

Error C3083 'core': the symbol to the left of a '::' must be a type You don't say which version of Boost or which Boost libraries you're

On 14/06/2017 23:37, James wrote: trying to use.

But the first thing you should investigate is to look through the include paths for your projects and ensure that you only have one path that points at the Boost library header files, and that you don't have an older version of the header files in any other path.

Remember to check the full list of include paths in the project; it's possible that some are coming from a properties file or other reference. Thanks for the reply. I only have one version of boost in my system, it is version 1.63.0. As far as I know I have checked all the include paths.

Wherever your system has the boost headers, is there a boost/core subdirectory, or is it missing? Some tools (e.g., cvs) ignore anything named "core" when copying or installing. -- Dick Hadsell 203-992-6320 Fax: 203-992-6001 Reply-to: hadsell@blueskystudios.com Blue Sky Studioshttp://www.blueskystudios.com 1 American Lane, Greenwich, CT 06831-2560

-----Original Message----- From: Richard Hadsell [mailto:hadsell@blueskystudios.com] Sent: 16 June 2017 15:50 To: boost-users@lists.boost.org Cc: James Subject: Re: [Boost-users] Build error C3083

On 06/15/2017 05:36 PM, James via Boost-users wrote:

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On 14/06/2017 23:37, James wrote:

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I am trying to build an application that uses the boost libraries.

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...

am seeing build error C3083 in bind_mf_cc.hpp.

The error states:

Error C3083 'core': the symbol to the left of a '::' must be a type You don't say which version of Boost or which Boost libraries you're trying to use.

But the first thing you should investigate is to look through the include paths for your projects and ensure that you only have one path that points at the Boost library header files, and that you don't have an older version of the header files in any other path.

Remember to check the full list of include paths in the project; it's possible that some are coming from a properties file or other reference. Thanks for the reply. I only have one version of boost in my system, it is version 1.63.0. As far as I know I have checked all the include

I paths. Wherever your system has the boost headers, is there a boost/core subdirectory, or is it missing? Some tools (e.g., cvs) ignore anything named "core" when copying or installing.

So anyone got any suggestions of changes I can try to fix this?

-----Original Message----- From: Boost-users [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Glen Fernandes via Boost-users Sent: 20 June 2017 23:22 To: boost-users@lists.boost.org Cc: Glen Fernandes Subject: Re: [Boost-users] Build error C3083

On 14/06/2017 23:37, James wrote:

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I am trying to build an application that uses the boost libraries. I am seeing build error C3083 in bind_mf_cc.hpp.

The error states:

Error C3083 'core': the symbol to the left of a '::' must be a type

If the application is including bind_mf_cc.hpp directly, it should not.

Otherwise, it is most likely because bind_mf_cc.hpp from a newer Boost (one that uses ) is being included by an older Boost distribution (without Boost.Core).

Glen

Thanks so if either of those is the case it should be able to be put right, ie what change do I need to make so that the older version includes Boost.core (which I seem to have in my directories) or the newer one doesn't need it?

-----Original Message----- From: Richard Hadsell [mailto:hadsell@blueskystudios.com] Sent: 20 June 2017 23:28 To: boost-users@lists.boost.org Cc: James Subject: Re: [Boost-users] Build error C3083

On 06/20/2017 06:16 PM, James via Boost-users wrote:

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-----Original Message----- From: Richard Hadsell [mailto:hadsell@blueskystudios.com] Sent: 16 June 2017 15:50 To: boost-users@lists.boost.org Cc: James Subject: Re: [Boost-users] Build error C3083

On 06/15/2017 05:36 PM, James via Boost-users wrote:

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On 14/06/2017 23:37, James wrote:

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I am trying to build an application that uses the boost

libraries.

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I

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am seeing build error C3083 in bind_mf_cc.hpp.

The error states:

Error C3083 'core': the symbol to the left of a '::' must be a type

Look for a "#define core ..." macro somewhere before your source includes the bind_mf_cc.hpp header.

OK I searched the bind_mf_cc.hpp file and found no "#define" statement.

Any further thoughts on this please? I'm stuck till I can get past this. Thanks.

I suggest finding the switch that outputs the pre-processed C++ file before it goes to the compiler. Usually /E or -E. Pipe the output to a txt file and look for the offending code to see if it looks like you think it should. That will tell you whether it's a pre-processing issue or not. I expect that the file ends up malformed due to something in the pre-processor, so try this and we'll go from there. -- chris