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execute_process: Add option to get results of every child

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Add a `RESULTS_VARIABLE` option to get the results of all children
in a pipeline of one or more `COMMAND`s.
This commit is contained in:
Adam Weisi
2017-04-13 19:10:04 +02:00
committed by Brad King
parent c095e90f3a
commit d6051ca39e
8 changed files with 237 additions and 3 deletions
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9
Help/command/execute_process.rst
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@@ -10,6 +10,7 @@ Execute one or more child processes.
[WORKING_DIRECTORY <directory>]
[TIMEOUT <seconds>]
[RESULT_VARIABLE <variable>]
[RESULTS_VARIABLE <variable>]
[OUTPUT_VARIABLE <variable>]
[ERROR_VARIABLE <variable>]
[INPUT_FILE <file>]
@@ -49,10 +50,16 @@ Options:
specified number of seconds (fractions are allowed).
``RESULT_VARIABLE``
The variable will be set to contain the result of running the processes.
The variable will be set to contain the result of last child process.
This will be an integer return code from the last child or a string
describing an error condition.
``RESULTS_VARIABLE <variable>``
The variable will be set to contain the result of all processes as a
:ref:`;-list <CMake Language Lists>`, in order of the given ``COMMAND``
arguments. Each entry will be an integer return code from the
corresponding child or a string describing an error condition.
``OUTPUT_VARIABLE``, ``ERROR_VARIABLE``
The variable named will be set with the contents of the standard output
and standard error pipes, respectively. If the same variable is named