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<title>cc Wrapper Sample Utility</title>
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<div class=Section1>
<p class=MsoNormal><o:p> </o:p></p>
<div style='border:none;border-bottom:solid windowtext 1.0pt;mso-border-bottom-alt:
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<p class=MsoNormal style='border:none;mso-border-bottom-alt:solid windowtext .75pt;
padding:0in;mso-padding-alt:0in 0in 1.0pt 0in'>cc Wrapper Sample Utility</p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>This sample utility demonstrates how one could write a
wrapper that maps a good number of flags from one compiler to the Microsoft
Visual C++ compiler (cl.exe).<span style='mso-spacerun:yes'> </span>In this
sample we give some mappings from Sun Forte and from <span class=SpellE>gcc</span>.<span
style='mso-spacerun:yes'> </span></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>The main goals of this sample are to be useful, readable,
extensible, and usable.<span style='mso-spacerun:yes'> </span></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>The code in the sample is written in standard C++. </p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>The sample works by reading a configuration file (the
configuration file isn’t necessary though; see below for how to compile so the
configuration file is not necessary) that contains the mappings.<span
style='mso-spacerun:yes'> </span>This file must be named “<span class=SpellE>ccFile.cfg</span>”.
It then applies these mappings to the command line and executes cl.exe with the
result of applying these mappings.<span style='mso-spacerun:yes'>
</span>Options that don’t have a mapping in the configuration are passed
through.<span style='mso-spacerun:yes'> </span></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>There are four kinds of options:</p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo2;
tab-stops:list .5in'><![if !supportLists]><span style='mso-list:Ignore'>1)<span
style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Normal
mapped options – these options are mapped to the VC option.<span
style='mso-spacerun:yes'> </span>For example cc –O2 –c <span class=SpellE>test.cpp</span>
maps to cl.exe /O2 /c</p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo2;
tab-stops:list .5in'><![if !supportLists]><span style='mso-list:Ignore'>2)<span
style='font:7.0pt "Times New Roman"'> </span></span><![endif]>No
space options – these options are mapped to the VC option as before, but their
arguments are appended immediately following the option, with no spaces.<span
style='mso-spacerun:yes'> </span>For example cc –I<span class=GramE>..</span>\include
maps to cl.exe \I<span class=GramE>..</span></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo2;
tab-stops:list .5in'><![if !supportLists]><span style='mso-list:Ignore'>3)<span
style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Warning
option – if this option is on the command line, issue a warning, apply the
mapping, and proceed.</p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo2;
tab-stops:list .5in'><![if !supportLists]><span style='mso-list:Ignore'>4)<span
style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Fatal
Error <span class=GramE>option – if this option is on the command line, issue</span>
a fatal error and then cease execution.</p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>The syntax for the configuration file is:</p>
<p class=MsoNormal><<span class=GramE>original</span> switch> *** <<span
class=SpellE>vc</span> switch> !!!<span style='mso-spacerun:yes'> </span>(<st1:City><st1:place>Normal</st1:place></st1:City>
mapped option)</p>
<p class=MsoNormal><<span class=GramE>original</span> switch> *** <<span
class=SpellE>vc</span> switch> ### (No space option)</p>
<p class=MsoNormal><span style='mso-spacerun:yes'> </span><<span
class=GramE>original</span> switch> *** <<span class=SpellE>vc</span>
switch> ^^^<span style='mso-spacerun:yes'> </span>(Warning option)</p>
<p class=MsoNormal><<span class=GramE>original</span> switch> *** <<span
class=SpellE>vc</span> switch> EEE (Fatal Error option)</p>
<p class=MsoNormal>@@@ <comment line> </p>
<p class=MsoNormal>~~~ <span style='mso-tab-count:1'> </span>(End of <span
class=SpellE>config</span> file)</p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>We should note that the configuration file given (<span
class=SpellE>ccFile.cfg</span>) is an example configuration file that has flags
for two different compilers in one file.<span style='mso-spacerun:yes'>
</span>Often this will be broken out to two different files, since there can
only be one mapping from each switch.</p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>If not using the configuration file:</p>
<p class=MsoNormal><span style='mso-spacerun:yes'> </span>There are two options
to compile with: (1) with the CCMEMORY defined (/DCCMEMORY) or (2) without it
defined (the default).<span style='mso-spacerun:yes'> </span>If CCMEMORY is
defined it doesn’t use a configuration and rather builds the set of mappings
directly from the source code.<span style='mso-spacerun:yes'> </span>See the
method <span class=SpellE>Input::<span class=GramE>CreatePairsFromCode</span></span><span
class=GramE>(</span>).</p>
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