fpm deployment enhancement

[jalvesz]

#791 #790 #787

Enable building stdlib with fpm directly from the root folder

python config/fypp_deployment.py
fpm build

Deploy the stdlib-fpm from the preprocessing created in the root folder. This deployment could be rendered unnecessary by building directly stdlib from the root.

[jalvesz]

@perazz maybe you know if there is a way to avoid launching the tests test_always_fail and test_always_skip when doing fpm test ? The other solution I have in mind is to explicitly add the tests to the manifest and deactivate the auto-tests option?

[perazz]

Yes I fear that would be the only option, though it's clearly sub-optimal (for each new test, it will have to be added to fpm.toml). I think the question is why those tests are there in the first place for? In other words, is there a valid reason those dummy tests should be kept into stdlib, or they could be safely removed? At the end of the day they are testing test-drive rather than stdlib.

[jalvesz]

I think the question is why those tests are there in the first place for? In other words, is there a valid reason those dummy tests should be kept into stdlib, or they could be safely removed?

I was wondering the same thing!

[jvdp1]

I think the question is why those tests are there in the first place for? In other words, is there a valid reason those dummy tests should be kept into stdlib, or they could be safely removed?

I was wondering the same thing!

These tests were introduced for testing the procedure check in stdlib_error. Later we started to use test-drive.
If check is not used anymore, I guess these tests could be removed.

[jalvesz]

Thanks @jvdp1, removing those tests enables indeed testing from the root build using fpm!

I'll propose a modification to the README.md before moving from draft to ready for review.

[jvdp1]

LGTM. Thank you @jalvesz . I just have a few last comments.
A nice improvement is the support of the cpp directives in the branch stdlib-fpm.

[jvdp1]

I played a bit with the script, and I think it adds nice features (especially that cpp directives are still kept in stdlib-fpm).

Thank you @jalvesz!

[perazz]

Looks great to me in its current form.
Down the road, I think we may want this script to be able to pass whatever defined preprocessor macros to the fpm.toml:

[preprocess]
[preprocess.cpp]
macros = ["added","by","deployment","script"]

So, let's keep that in mind for now.

[jalvesz]

Down the road, I think we may want this script to be able to pass whatever defined preprocessor macros to the fpm.toml:

Totally! While in the current PR I intentionally striped out that function to make things concise, in the script I posted in #791 that function is still available and can be easily added.

[jvdp1]

@jalvesz @perazz It seems that this PR is ready. I will merge it in a couple of days.