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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">That's because now you've set prefix to empty string and it'll be expanded to nothing. VERBATIM made the empty quotes appear because they were put directly
as parameter.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I think if you set(prefix "\"\"") it'll do the trick.<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> CMake [mailto:cmake-bounces@cmake.org]
<b>On Behalf Of </b>abid rahman<br>
<b>Sent:</b> Montag, 30. Juni 2014 13:14<br>
<b>To:</b> Nils Gladitz<br>
<b>Cc:</b> cmake@cmake.org<br>
<b>Subject:</b> Re: [CMake] Passing empty arguments to add_custom_command<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Thank you Nils, VERBATIM really worked for me as shown below:<o:p></o:p></p>
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<p class="MsoNormal"><b>add_custom_command(</b><o:p></o:p></p>
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<p class="MsoNormal"><b> OUTPUT ${some_files}</b><o:p></o:p></p>
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<p class="MsoNormal"><b> COMMAND ${PYTHON_EXECUTABLE} test.py "" ${src} ${dst}</b><o:p></o:p></p>
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<p class="MsoNormal"><b> DEPENDS ${....... all deps ......}</b><o:p></o:p></p>
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<p class="MsoNormal"><b> VERBATIM )</b><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">But now got a new question. I tried setting a variable and passing it, but it didn't work. as shown below:<o:p></o:p></p>
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<p class="MsoNormal"><b>set(prefix "")<br>
add_custom_command(</b><o:p></o:p></p>
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<p class="MsoNormal"><b> OUTPUT ${some_files}</b><o:p></o:p></p>
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<p class="MsoNormal"><b> COMMAND ${PYTHON_EXECUTABLE} test.py ${prefix} ${src} ${dst}</b><o:p></o:p></p>
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<p class="MsoNormal"><b> DEPENDS ${....... all deps ......} )</b><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Any idea why?<o:p></o:p></p>
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<p class="MsoNormal"><br clear="all">
<o:p></o:p></p>
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<p class="MsoNormal">Abid K.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><o:p> </o:p></p>
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<p class="MsoNormal">On Mon, Jun 30, 2014 at 1:35 PM, Nils Gladitz <<a href="mailto:nilsgladitz@gmail.com" target="_blank">nilsgladitz@gmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">On 06/30/2014 09:42 AM, abid rahman wrote:<o:p></o:p></p>
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<p class="MsoNormal">Hello,<br>
<br>
I need to execute following command with add_custom_command:<o:p></o:p></p>
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<p class="MsoNormal">*python test.py "" src dst*<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
<br>
The first argument is empty. Sometimes it may have some text. So Python<br>
process the args as [test.py, "", src, dst]. But when I do the same with<br>
add_custom_command, the empty argument is not considered, instead src is<br>
considered as second argument.<br>
<br>
I did it as follows:<o:p></o:p></p>
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<p class="MsoNormal">*add_custom_command(<br>
*<br>
* OUTPUT ${some_files}<br>
*<br>
* COMMAND ${PYTHON_EXECUTABLE} test.py "" ${src} ${dst}<br>
*<br>
* DEPENDS ${....... all deps ......} )*<o:p></o:p></p>
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<p class="MsoNormal"><br>
<br>
So what is the best method to pass empty arguments to cmake<br>
add_custom_command?<br>
Abid K.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
Try adding VERBATIM.<span style="color:#888888"><br>
<br>
<span class="hoenzb">Nils</span></span><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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