github: Add a clang build.

[ossama-othman]

No description provided.

[ossama-othman]

I added a clang build because I ran into an unexpected compile-time error when building mptcpd with clang 14. See #239.

[coveralls]

Pull Request Test Coverage Report for Build 2557354611

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

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Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 61.609%

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Totals
Change from base Build 2557225052:	0.0%
Covered Lines:	1149
Relevant Lines:	1865

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💛 - Coveralls

[mjmartineau]

Looks good to me. Does it make sense to also build mptcpd with clang?

[ossama-othman]

Looks good to me. Does it make sense to also build mptcpd with clang?

Only mptcpd is built with clang. The ./configure CC=... is for mptcpd. ELL is built with whatever the compiler the configure script picks, gcc in this case. Commit e1f8329 causes ELL to built with clang along with mptcpd.