Extend the fix from commit 74c9d40876 (execute_process: Fix invocation
of .cmd/.bat with spaces, 2025-01-31) to work without relying on
conversion to a "short path", which may not exist. Instead, extending
the `cmd /c` wrapper to `cmd /c call` seems to support spaces directly.
Suggested-by: Alexandru Croitor <alexandru.croitor@qt.io>
Fixes: #26655
The `CreateProcessW` documentation states "to run a batch file, you must
start the command interpreter". Use `cmd /c the.bat` to run batch files.
Also, use a "short path" to the `.bat` file if needed to avoid spaces.
Previously this worked in some cases only due to undocumented behavior
of `CreateProcessW` when given a `.bat` file.
Fixes: #26655
Windows is heading toward making UTF-8 the preferred MBCS. As CMake's
internal encoding, `UTF-8` is effectively equivalent to `NONE`, which
was CMake's behavior prior to 3.15's accidental change to `AUTO`.
Behavior of `ENCODING UTF-8` is independent of CMake's internal
encoding, making it in principle a better default than `NONE`.
Add policy CMP0176 for compatibility and to document the default's
history.
Fixes: #26262
The default was originally AUTO in commit 2ed473b3b8 (execute_process:
Add ENCODING option for Windows child process output, 2016-11-23,
v3.8.0-rc1~232^2) but was changed back to NONE by commit 07c3380a6e
(execute_process: Restore no-decoding default behavior, 2017-02-13,
v3.8.0-rc2~26^2) for CMake 3.8. Later it was accidentally changed back
to AUTO by commit b783e62533 (cmExecuteProcessCommand: Port to
cmArgumentParser, 2019-03-25, v3.15.0-rc1~270^2) in CMake 3.15 but the
documentation was not updated. Document the current default, AUTO, and
add a test case to verify it.
Issue: #26262
Verify that `execute_process` launches processes on Windows such that
`GetStartupInfoW` in the child does not populate `STARTUPINFOW` members
reserved for the MSVC C run-time.
Issue: #25996
Prior to 5420639a, execute_process() would open INPUT_FILE, OUTPUT_FILE,
and ERROR_FILE relative to the WORKING_DIRECTORY argument if it was
provided. Restore this behavior for backwards compatibility.
Fixes: #25338
1. COMMAND_ERROR_IS_FATAL ANY will capture errors if the exit code is
non zero, there is a timeout or an abnormal exit.
2. COMMAND_ERROR_IS_FATAL LAST
will capture if only the last process has an exit code non zero, there
is a timeout or an abnormal exit.
Fixes: #21562
Add COMMAND_ECHO option to the execute_process command. This will allow
execute_process to show the command it will run. Also add a cmake variable
CMAKE_EXECUTE_PROCESS_COMMAND_ECHO. Both the option and the variable can
be set to one of the following: STDERR|STDOUT|NONE. The command will be
printed to stderr or stdout or not at all.
Fixes: #18933
UTF-8 is the proper naming according to the UTF-8 RFC and is also the
name used for a similar keyword in the file() command. This commit
brings (backward compatible) consistency to the keyword names and allows
the standard UTF-8 name to be used with execute_process(). The old UTF8
keyword is still supported.
Use the KWSys Process "MergeOutput" option to give the child process
the same pipe (or file) for both stdout and stderr. This allows
natural merging of stdout and stderr together instead of merging
on arbitrary buffered read boundaries as before.
