#30 Support gcc -std=c++20

[César Douady]

With the std=c++20 option, gcc would not compile.
This is due to a few constructors in some templates that are written as Foo<t> instead of just Foo. This should not affect
I have attached a tiny diff file that shows the necessary patch to apply to fix this.</t>

[César Douady]

Oups, I meant this should not afffect other compilers as this is the standard way to declare constructors.

[Barry Alan Scott]

Thanks. I'll run it pass my tests

[Barry Alan Scott]

patch does not like the diff.
Can you create the diff with svn diff please?
Or if you doing this outside of svn then use diff -u?
The diff should look like this format:

$ diff -u README.txt{~,}
--- README.txt~ 2022-08-07 09:54:24.133626013 +0100
+++ README.txt  2022-08-07 09:54:24.133626013 +0100
@@ -2,4 +2,6 @@

 Add support for building against python 3.11 alpha 4.

+Foo
+
 This Version 7.1.6 with README updates

[César Douady]

Hi Barry,

Here it is. I actually do not use svn.

I have been unable to provide a multi-file diff that is understandable by patch.
There are 2 files to patch, one for Python2 the other for Python3. I have not tested the patch for Python2 but it is mostly the same as for Python3 (and it is very simple).

I have attached the diffs for the individual files and a global file for both by using diff -ru. If you have a look on these files, you’ll see it is very simple.

Sorry for the inconvenience.

Regards,

-
- César Douady
- Doliam
- Senior Hardware & Software architect
- +33 6 30 71 90 61
-

Le 7 août 2022 à 10:52, Barry Alan Scott barry-scott@users.sourceforge.net a écrit :

patch does not like the diff.
Can you create the diff with svn diff please?
Or if you doing this outside of svn then use diff -u?

[patches:#30] https://sourceforge.net/p/cxx/patches/30/ Support gcc -std=c++20

Status: open
Group:
Created: Mon Jul 11, 2022 06:27 PM UTC by César Douady
Last Updated: Sun Jul 31, 2022 02:46 PM UTC
Owner: nobody
Attachments:

pycxx-7.1.7.diff https://sourceforge.net/p/cxx/patches/30/attachment/pycxx-7.1.7.diff (2.1 kB; application/octet-stream)
With the std=c++20 option, gcc would not compile.
This is due to a few constructors in some templates that are written as Foo<t> instead of just Foo. This should not affect
I have attached a tiny diff file that shows the necessary patch to apply to fix this.</t>

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[Barry Alan Scott]

I'm updating build to allow testing against each standard.
Your patch is good for c++11 to c++20 with GCC.
I see some issues with c++98 and c++03 but I happy to not support that far back in time.

I'll go on to test with MSVC and xcode/llvm next.

I think I will not patch python 2 files are these are, I hope, at this point for legacy systems that will not need the patch and may be using very old compilers.