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Reply to topic   Topic: Introducing Visual Studio 2019 VS16 httpd 2.4.39
Author
Steffen
Moderator


Joined: 15 Oct 2005
Posts: 2761
Location: Hilversum, NL, EU

PostPosted: Sat 06 Apr '19 12:06    Post subject: Introducing Visual Studio 2019 VS16 httpd 2.4.39 Reply with quote

Here we go with the new Windows® Visual Studio C++ 2019 aka VS16. VS16 has improvements, fixes and optimizations in areas like Performance, MemoryManagement, New standard conformance features, Code generation and Stability.

Download: Now on the download page

Why VS16 now
Maybe you notice that we call it now VS16 instead of VC16. In consultation with the PHP team we both now going to use VS16.

VS16 is the version number of Visual Studio 2019.

The reason is, that VC15 is already a fictional identity, as the real VC++ version is 14.1, as you know. The new default one is now 14.2 still, not 16. Also, the version numbers move a lot faster now that in versions before VS2015. Thus, it turns out better to refer to the Visual Studio version and it's default toolset, than trying to catch up with the VC++ version which became unpredictable. Back in time, we've started to build with a preview of VS2017, which was indeed VC15, but after the GA release the version has been changed to 14.1, where we didn't catch up.

Compatibility VS16 with VC14 and VC15
VS16 is backward compatible to VC15/14. That means, a VC15/14 module can be used inside a VS16 binary (for example PHP VC15/14 as module). Because this compatibility the version number of the C++ Redistributable is 14.2x.xx. And after install is the Redistributable VC14/15 updated from 14.0x.xx/ 14.1x.xx to VS2019 14.2x.xx , it is called Microsoft Visual C++ 2015-2019 Redistributable and you can still use VC15/14.
Note from Microsoft: Visual C++ 2015, 2017 and 2019 all share the same redistributable files.
For example, installing the Visual C++ 2019 redistributable will affect programs built with Visual C++ 2015 and 2017 also. However, installing the Visual C++ 2015 redistributable will not replace the newer versions of the files installed by the Visual C++ 2017 and 2019 redistributables.
This is different from all previous Visual C++ versions, as they each had their own distinct runtime files, not shared with other versions.

I plan to update the external modules to VS16, in the meantime use the VC14 and/or VC15 modules that works without issues.

Please let me know how it goes.

Steffen


Last edited by Steffen on Fri 07 Jun '19 10:59; edited 5 times in total
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