KWSys as of 2021-04-14 changed the return type of `SystemTools`
operations from `bool` to `Status`. Update our call sites.
This may improve error reporting accuracy in a few places.
Since commit f034b0f663 (CMake compilation: do not use compiler
extensions, 2020-03-14, v3.18.0-rc1~494^2), some sources explicitly
enable needed system APIs on some platforms using definitions like
`_POSIX_C_SOURCE` and `_XOPEN_SOURCE`. Drop the definitions for
OpenBSD, which provides the POSIX APIs by default.
Revert commit d78c22aa64 (cmSystemTools: Improve RenameFile on Windows
with MOVEFILE_WRITE_THROUGH, 2020-08-25, v3.19.0-rc1~243^2~3). Using
this flag causes the operation to fail frequently in some environments.
Drop it for now pending further investigation.
Fixes: #21571
In commit dd8365b3f1 (Merge branch 'upstream-KWSys' into update-kwsys,
2020-04-06, v3.18.0-rc1~397^2) we imported KWSys commit `019afb6ea`
(SystemTools: Drop GetCurrentWorkingDirectory 'collapse' argument,
2020-04-03). That caused `GetCurrentWorkingDirectory` to no longer send
paths through the KWSys translation map and broke CMake's detection of
the absolute path to a build directory containing a symbolic link.
Add our own `cmSystemTools::GetCurrentWorkingDirectory` wrapper around
the KWSys method in order to restore that mapping.
Test-case-by: Ben Boeckel <ben.boeckel@kitware.com>
Issue: #16228Fixes: #20900
ec7928ef26 use _s to construct static string_views at several places
94de927cab VS10Generator: avoid many string allocations
8ca2504a4d use string_views to avoid memory allocations
761f1adcae check for a valid URL scheme before starting to do any splitting
ef778d77e0 replace std::string::substr() with operations that do not allocate memory
77616f4681 pass cm::string_view to cmVisualStudioSlnParser::ParseTag()
ada6a3226f use cm::string_view for language extension lookups
48adc29721 replace "std::string::find(x) == 0" with cmHasPrefix()
...
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !4501
For now, compiler extensions are no longer activated on CMake sources.
However these extensions are still used for various third parties.
This MR is a partial answer to the issue #20454.
On Windows, libuv uses `_CrtSetReportHook` to install a handler it uses
to suppress assertions on invalid file descriptors in `_get_osfhandle`.
This removes the handler we install in CI environments to suppress
interactive popups. Move installation of our handler to after libuv is
initialized so that our handler is actually used.
Unfortunately this also removes libuv's handler and so may cause Debug
builds under CI to abort on invalid file descriptors instead of simply
converting them to `INVALID_HANDLE_VALUE`. If this becomes a problem
we may need to modify libuv to make its hook more configurable.
Set the MinTypeNameLength option to an impossibly high value in order
to limit the diagnostics to iterators. Leave new expressions and cast
expressions for later.
This patch is generated by a python script that uses regular expressions to
search for string concatenation patterns of the kind
```
std::string str = <ARG0>;
str += <ARG1>;
str += <ARG2>;
...
```
and replaces them with a single `cmStrCat` call
```
std::string str = cmStrCat(<ARG0>, <ARG1>, <ARG2>, ...);
```
If any `<ARGX>` is itself a concatenated string of the kind
```
a + b + c + ...;
```
then `<ARGX>` is split into multiple arguments for the `cmStrCat` call.
If there's a sequence of literals in the `<ARGX>`, then all literals in the
sequence are concatenated and merged into a single literal argument for
the `cmStrCat` call.
Single character strings are converted to single char arguments for
the `cmStrCat` call.
`std::to_string(...)` wrappings are removed from `cmStrCat` arguments,
because it supports numeric types as well as string types.
`arg.substr(x)` arguments to `cmStrCat` are replaced with
`cm::string_view(arg).substr(x)`
