[cmake-developers] execute_process inconsitancy

[J Decker]

On Mon, Sep 3, 2012 at 3:58 PM, David Cole <david.cole at kitware.com> wrote:
> OK... Is hg.exe in the PATH? Do you get different results if you use
> the full path to hg.exe rather than just "hg"?
>
hg is in the path; although, when hg is not in the path, the result is the same.

hg.exe is the same result


PATH=C:\Windows;C:\Windows\system32;c:\develop\tools;c:\ftn3000\bin;c:\ftn3000\utility;;c:\Develop\tools\startups\..\..\tools\unix;c:\Develo
p\tools\startups\..\..\tools\nasm;c:\Develop\tools\startups\..\..\tools\watcom\binnt;c:\Develop\tools\startups\..\..\tools\watcom\binw;c:\De
velop\tools\startups\..\..\tools\unix\cmake\bin;"C:\Program Files\TortoiseHg\"

the following is the search...
C:\Develop\tools\unix\cmake\bin\hg.exe
cmake_source_dir
32bit c:\windows\syswow64
c:\windows\system.hg.exe
c:\windows\hg.exe
32bit c:\windows\syswow64
c:\develop\tools
c:\ftn3000\bin
c:\ftn3000...... (path up to)

c:\develop\tools\unix\cmake\bin\hg.exe

then (and I think this is where it's wrong, I don't know how it would
have created this path)

M:\sack\"c:\program files\tortoisehg\"\hg.exe


then it does the same search but looking for 'hg.exe id' instead of
just 'hg.exe'





>
> On Mon, Sep 3, 2012 at 5:48 PM, J Decker <d3ck0r at gmail.com> wrote:
>> dir "c:\Program Files\tortoisehg
>>  Volume in drive C has no label.
>>  Volume Serial Number is F05B-C5AF
>>
>>  Directory of c:\Program Files\tortoisehg
>> ....
>> 08/20/2012  10:47 PM            33,544 hg.exe
>> ....
>>
>> I don't know what hy.py would be .....
>>
>> On Mon, Sep 3, 2012 at 2:37 PM, David Cole <david.cole at kitware.com> wrote:
>>> On Mon, Sep 3, 2012 at 5:15 PM, J Decker <d3ck0r at gmail.com> wrote:
>>>> On Mon, Sep 3, 2012 at 1:04 PM, Brad King <brad.king at kitware.com> wrote:
>>>>> On 09/03/2012 03:04 PM, J Decker wrote:
>>>>>> I use this command to get the current repository version number.
>>>>>>
>>>>>> Under windows I have to use 'cmd /c ...'
>>>>>> under linux or I obviously can't use that.
>>>>>>
>>>>>> Is there a test I can do in a cmakelists to test the shell processor?
>>>>>>
>>>>>> Is there something I can do to make this the same command?
>>>>>>
>>>>>> Under windows, without cmd /c .... the output variable is blank.
>>>>>>
>>>>>>
>>>>>> if( WIN32 )
>>>>>>
>>>>>> execute_process( COMMAND cmd /c hg id -i WORKING_DIRECTORY
>>>>>> ${CMAKE_SOURCE_DIR} OUTPUT_VARIABLE TMP_CURRENT_REPO_REVISION )
>>>>>>
>>>>>> else( WIN32 )
>>>>>>
>>>>>> execute_process( COMMAND hg id -i WORKING_DIRECTORY
>>>>>> ${CMAKE_SOURCE_DIR} OUTPUT_VARIABLE TMP_CURRENT_REPO_REVISION )
>>>>>>
>>>>
>>>> execute_process( COMMAND hg id -i WORKING_DIRECTORY
>>>> ${CMAKE_SOURCE_DIR} OUTPUT_VARIABLE TMP_CURRENT_REPO_REVISION
>>>> ERROR_VARIABLE TMP_CURRENT_REPO_REVISION2 )
>>>> message( "1)" ${TMP_CURRENT_REPO_REVISION} )
>>>> message( "1)" ${TMP_CURRENT_REPO_REVISION2} )
>>>>
>>>> both revision and revision2 are blank, (without cmd /c before)
>>>>
>>>>>> endif( WIN32 )
>>>>>
>>>>> The command operates the same way on both platforms.
>>>>> My guess is that "hg" is printing to stderr on Windows.
>>>>> Try this:
>>>>>
>>>>>  execute_process(
>>>>>    COMMAND hg id -i
>>>>>    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
>>>>>    OUTPUT_VARIABLE TMP_CURRENT_REPO_REVISION
>>>>>    ERROR_VARIABLE TMP_CURRENT_REPO_REVISION
>>>>>    )
>>>>>
>>>>> -Brad
>>>> --
>>>>
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>>>
>>>
>>> On Windows, "hg" is not an executable file, so execute_process is
>>> probably not even running it. If you instead say:
>>>
>>>   COMMAND C:/python26/python.exe C:/path/to/hg.py (... args ...)
>>>
>>> does that work?