cfec4c1c5e IAR: Enforce output extension for xlink targets
7fec8f993b IAR: Replace extension for compiler and assembler

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !8477

fb3c4715cd Ninja: Restore detection of msvc-wine showIncludes prefix

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: huangqinjin <huangqinjin@gmail.com>
Merge-request: !8479

Since commit 8f82e755f3 (Ninja: Fix detection of MSVC showIncludes
prefix in Italian, 2023-01-26, v3.26.0-rc1~20^2) our regex no longer
matches the output from `msvc-wine`, which uses forward slashes:

    Note: including file: /path/to/foo.h

`cl /showIncludes` under Wine prints paths of the form `Z:\path\to\file`,
but the `msvc-wine` wrapper converts them to the form `/path/to/file` so
that native Ninja can be used.  Update our regex to match the prefix
followed by a path with a leading forward slash.

Fixes: #24908

3bf0830e44 ExternalProject: Avoid adding empty touch command on "ALWAYS" steps

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: buildbot <buildbot@kitware.com>
Acked-by: Craig Scott <craig.scott@crascit.com>
Merge-request: !8468

The problem fixed by commit c0b749cf62 (ExternalProject: Always add a
command to a step, 2014-11-05, v3.2.0-rc1~402^2~3) may occur for an
empty `COMMAND ${touch}` too, so avoid specifying any `COMMAND` at all
if there is no touch command.

6a82852dc2 Allow toolchain suffix without leading dash

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: buildbot <buildbot@kitware.com>
Reviewed-by: Ben Boeckel <ben.boeckel@kitware.com>
Merge-request: !8462

FreeBSD installs both LLVM and gcc with tools named after the
major version, in the form "clang<major>", such as "clang16".

Detect compilers named this way, and find the related toolchain
tools.

Canonical flag changed in LLVM commit ba15d186e5cef2620d562c6c9d9a6d570382cd0a.