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    <p>There's a good chance that this is because the quotes aren't making it through (they may need to be escaped, see the <a href="http://doc.trolltech.com/4.6/qprocess.html#start" rel="nofollow noreferrer">docs for QProcess::start()</a>). </p> <p>cmd.exe treats equals signs in command line options that aren't quoted as a separator between arguments similar to a space or tab. Just one of very many bits of oddness in Windows cmd scripting:</p> <pre><code>C:\test&gt;type c:\util\cmdechoargs.cmd @echo off setlocal set /a i=0 echo args[*]: %* :loop if {%1} == {} goto :eof echo argv[%i%]: %1 set /a i=%i% + 1 shift goto :loop C:\test&gt;cmdechoargs testing=123 args[*]: testing=123 argv[0]: testing argv[1]: 123 C:\test&gt;cmdechoargs "testing=123" args[*]: "testing=123" argv[0]: "testing=123" </code></pre> <p>The best documentation I've come across for how to handle command line arguments in Windows cmd scripts is <a href="http://rads.stackoverflow.com/amzn/click/1578700477" rel="nofollow noreferrer">Tim Hill's "Windows NT Shell Scripting"</a> - get one used for only a penny!</p> <p>Based on the examples given in your update, I think you might want your options that have equals signs in them to have quotes embedded inside them:</p> <pre><code>"\"--variant=%1-%2\"" "\"--source-release=%1\"" </code></pre> <hr> <h2>Edit -- new material</h2> <p>The following script has a routine that will strip the quotes off of an argument passed to a cmd script. The routine returns the 'dequoted' argument in an environment variable named <code>RET</code> using an idiom/technique from Tim Hill's book I mentioned above. I stole some of the dequoting code from an example here: <a href="http://ss64.com/nt/syntax-esc.html" rel="nofollow noreferrer">http://ss64.com/nt/syntax-esc.html</a>, but made it a bit more robust to handle empty quotes.</p> <pre><code>@echo off setlocal set /a i=0 echo args[*]: %* :loop if {%1} == {} goto :eof echo. echo argv[%i%]: %1 call :dequote %1 set dequoted_arg=%RET% echo argv[%i%] ^(dequoted^): %dequoted_arg% set /a i=%i% + 1 shift goto :loop :dequote setlocal SET _string=###%1### if {%_string%} == {######} goto :dequote_empty if {%_string%} == {###""###} goto :dequote_empty SET _string=%_string:"###=% SET _string=%_string:###"=% SET _string=%_string:###=% goto :dequote_done :dequote_empty set _string= :dequote_done endlocal &amp; (set RET=%_string%) &amp; goto :eof </code></pre> <p>This kind of thing is why you want to avoid (in my opinion) cmd scripts except for the simplest of tasks. But, I hope this helps you pass unquoted arguments to your scons process through your batch file.</p>
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    1. POWhy is QProcess converting the '=' in my arguments to spaces
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    1. USMichael Burr
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    1. POWhy is QProcess converting the '=' in my arguments to spaces
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    1. COI'm trying exactly that right now.
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    2. COAnd it didn't work adding an extra set of escaped quotes around the arguments did manage to turn it into a single argument and the = sign didn't vanish but the quotes then got passed along to SCons and it thought the whole thing was a build target instead of an option and value.
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    3. CO@dagorym: I've added an example that can strip the quotes off the batch file arguments in your cmd script. I hope it helps...
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