Hi Kornel,
On Wednesday, November 13, 2013 11:08 AM, [email protected] wrote:
> Am Mittwoch, 13. November 2013 um 18:41:03, schrieb David Hauck
> <[email protected]>
>> Hi Kornel,
>>
>> On Wednesday, November 13, 2013 10:26 AM, cmake-
> [email protected] wrote:
>>> Am Mittwoch, 13. November 2013 um 18:12:26, schrieb David Hauck
>>> <[email protected]>
>>>> Hello,
>>>>
>>>> I've been using several "install (CODE "EXECUTE_PROCESS ...")"
>>>> constructs
>>> in my top-level CMakeLists.txt file. However, I've been unable to
>>> capture/operate on any exit status of the embedded command.
>>> Unfortunately, documentation/searches haven't turned up any useful
>>> pointers. The closest I've come is a pointer in the following thread:
>>>> http://www.cmake.org/pipermail/cmake/2011-July/045475.html However,
>>>> I've not been able to sufficiently read between the lines to get
>>>> this working.
>>>>
>>>> Does anyone have any thoughts on how to get something like the
>>>> following working:
>>>>
>>>> install (CODE "EXECUTE_PROCESS (
>>>> COMMAND ant ...
>>>> WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/java
>>>> ERROR_VARIABLE _err
>>>
>>> Didn't you mean 'RESULT_VARIABLE' here?
>>
>> No, I really do mean ERROR_VARIABLE (unless, of course, this variable
>> does
> not include the non-zero exit status of the EXECUTE_PROCESS command?).
>
> If you run 'cmake --help-command execute_process', you see: ... If
> RESULT_VARIABLE is given the variable will be set to contain the
> result of running the processes. This will be an integer return code
> from the last child or a string describing an error condition. ... So,
> if this is not "0", then you have an error condition.
Yes, I see this. I also assumed that the ERROR_VARIABLE would be returning
non-zero text as well in this case. I will change to using RESULT_VARIABLE,
but, in both cases, it seems that I'm referencing the variable incorrectly
(either syntactically or in the incorrect context) since this/these is/are
always <empty>.
>> BTW, I'm still curious about the (dual 'code') construct generally.
>> Specifically, if I do the following I never see the fatal error
>> message (so I'm wondering if there's still something wrong regarding
>> the scoping of the message command)?
>>
>> install (CODE "EXECUTE_PROCESS (
>> COMMAND ant ...
>> WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/java
>> ERROR_VARIABLE _err
>> )
>> MESSAGE( FATAL_ERROR \"err: ${_err}\")
>
> Never did this. When do you want to see the message?
Ideally, I want to be able to test for the result of this variable (either
ERROR_VARIABLE or RESULT_VARIABLE) after the execute_process command completes
(during 'make install') to determine its result and to terminate (with error
message) when the command fails.
Thanks,
-David
> As I understand your code, only in call of cmake, e.g. at configuration time.
>
> Kornel
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