`${CMAKE_COMMAND} -E` subcommands are cross-platform replacements.

Fixes: #24263

Fixes #21584

Russell Greene authored 2 years ago and Brad King committed 2 years ago

The `GNU` and `MSVC` compilers obviously use their own front-end
command-line style.  Also set this for `AppleClang`.

Fixes: #24232

Fixes #24192

Both modules have actually been removed entirely, they exist
in the Help directory only as "This module used to exist"
placeholders.

Provide clients with a way to get a known set of configure log event
versions.

Issue: #23200

In order to support multiple log versions without buffering the
entire log, move versioning to the level of individual events.
Multiple versions of an event may then be logged consecutively.

Issue: #23200

Matthew Woehlke authored 2 years ago and Brad King committed 2 years ago

Add configure log events for `try_compile` and `try_run` results.

Issue: #23200

Matthew Woehlke authored 2 years ago and Brad King committed 2 years ago

Add infrastructure for a "configure log".  Use YAML for a balance of
machine- and human-readability to records details of configure-time
events in a structured format.

Teach the RunCMake test framework to support matching the configure log.

Issue: #23200

These patches now support the `-MF` output, so remove the `none` support
added just for the old patchset which did not use it.

Also update the flag name to `-fmodule-output=`.

Due to the new Clang module mapper flag, use a new experimental support
UUID as well.

Amir Masoud Abdol authored 2 years ago and Brad King committed 2 years ago

Fixes: #19087

Fixes: #24186

Robert Maynard authored 2 years ago and Brad King committed 2 years ago

CUDA 12.0 has been released with support for `-std=c++20`.

This is a common use case, so add an example demonstrating it.

The "In makefile terms" explanation is left from very early days of
CMake to help developers migrating from hand-written makefiles.
These days it is often misinterpreted, particularly in the context
of multiple `add_custom_command` calls, to mean that we generate a
single Makefile containing rules for all custom commands.  This
leads to an incorrect mental model of the expressed build system.
The actual generated build system may spread the rules across multiple
targets that do not see the each other's file-level rules, which makes
target-level dependencies important too.

VS 2017 and above come with a Visual Studio Installer tool that tracks
four-component Visual Studio version numbers.  We already detect the VS
version number because it is needed to make some generation decisions.
Provide the number to projects in a `CMAKE_VS_VERSION_BUILD_NUMBER`
variable so they can use it similarly.

Fixes: #24230

Fixes: #21362

The `SYSTEM` directory property does not affect imported targets.

Fixes: #24219

Visual Studio support warrants a new ID.

Fixes: #24141

Instead, just set the variables for how scanning works since that is
part of the compiler mechanisms.

Fixes: #24198

Michael Hirsch authored 2 years ago and Craig Scott committed 2 years ago

Avoid hard-coding a warning-as-error flag now that CMake offers a
first class abstraction for that.

Also mention some relevant generator expressions which can be used
to provide even more specific targeting with language-specific flags.

Fixes: #24200

Revert commit be848a71 (MSVC: Teach find_library to consider the
'libfoo.a' naming convention, 2022-09-19, v3.25.0-rc1~111^2).  When
targeting the MSVC ABI, this causes GNU-ABI libraries to be found in
cases they were not previously, and broke existing builds.  Revert the
change pending further discussion on how to handle the motivating use
case.

Issue: #23975
Fixes: #24168

Evaluate and expand generator expressions in the `COMMENT` argument of
the `add_custom_command()` and `add_custom_target()` commands.
This allows to include generator expressions, e.g. a targets location
$<TARGET_...> or the current configuration $<CONFIG>, in the build-time
messages.

Fixes #22507

Fixes: #24150

At least the top-reference links. Internal `:ref:` usages have been left
intact.