Buried headers and includes cleanup

[mloskot]

Long time ago, there was discussion on soci-users about cleaning up structure of SOCI headers and install headers buried in dedicated folder(s). Here is the original discussion soci-users: includes cleanup

It resulted in patch from @juliantaylor (patch/16 in tracker at SourceForge).
Then, @denisarnaud created branch to maintain the buried headers and submitted two pull requests:

• [Buried headers] Change for the source code da115115/soci#4
• [Buried headers] Change for the CMake-related files da115115/soci#5

Julian also seems to maintain his patch in a branche at https://github.com/juliantaylor/soci

The buried headers subject has been forgotten since. It would be a good idea to pick it up and release with SOCI 4.0.0, so let's discuss it and make the work happen.

New thread related to this ticket at soci-users: Buried headers and includes cleanup

---

Related ideas

• This may be a good opportunity to switch headers extension from .h to .hpp and replace - with _ in all file names.

[hasselmm]

Can this please be done? It's pretty nasty that one has to add $prefix/include/soci to the header search path as this pollutes the search path with pretty generally named header files like "error.h", "session.h" or "version.h".

[mloskot]

@hasselmm I certainly agree with you, though we've decided to issue the bugfix release of SOCI 3.2.0 first. This will happen this month yet. Then, I'm getting my hands on preparing SOCI 4.0.0 with new source tree and installation layout.

Here you can read short rationale: release plans and here quick is on Preparing for SOCI 3.2.0 release.

[mloskot]

I'm happy to announce, this has been implemented as part of #125

NOTE: There still may be CMake configuration updates missing (i.e. around install targets), please open new issues or wait until it's caught and fixed in develop branch, before releasing SOCI 4.0.0.