qt56-qtscript @5.6.3_2: : error: unknown type name 'This'

[kencu (Ken)]

This port defaults to clang-9.0 for building on 10.7, but this is a failure, in the end (log attached). The first error is as above, but a litany of errors follow.

The build succeeds with clang-3.7, but not clang-5.0.

qt56-qtscript @5.6.3_2 (active) platform='darwin 11' archs='x86_64' date='2019-10-13T13:06:49-0700'

[kencu (Ken)]

Has "duplicate", although with qt58 59325

[MarcusCalhoun-Lopez (Marcus Calhoun-Lopez)]

C++20 will likely have a header file called ​version. Qt Script has a file called VERSION. On a case-insensitive file systems, the wrong file will be found.

[kencu (Ken)]

Indeed. I build all these older ports with clang-5.0 (which I hope we never get rid of), and don't see how we could realistically spend the time to upgrade all these older ports to build with clang-9.0. I don't plan to do that, myself.

Perhaps someone on the wild wide web has found the time to make it build with new, different, stricter compilers.

[MarcusCalhoun-Lopez (Marcus Calhoun-Lopez)]

In e1b366527ad1c0f7bc8e42005df2285aaa1c606c/macports-ports (master):

qt5*-qtscript: allow C++20 compilers to work

C++20 will likely have a header file called version.
Qt Script has a file called VERSION.
On a case-insensitive file systems, the wrong file will be found.

Fixes #59321

[chrstphrchvz (Christopher Chavez)]

This issue was addressed upstream only since 5.12: ​https://codereview.qt-project.org/c/qt/qtscript/+/254871

So the fix is still needed for qt59-qtscript and qt511-qtscript: ​https://github.com/macports/macports-ports/pull/21972

[chrstphrchvz (Christopher Chavez)]

In 38bda3ab4bdc4d794a37f3635ac1f1e723032a24/macports-ports (master):

qt(59|511)-qtscript: allow C++20 compilers to work

As done previously for older Qt versions.

See: #59321