<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div>I'm not familiar with the OpenCL part of the compiler, but I'm pretty sure you're not supposed to invoke -cc1 mode directly, just like the C compiler. The right way to do this is with the usual -std option:</div><div><br></div><div>clang -std=cl1.2 tmp.cl</div><div><br></div><div>This ensures that all the other driver-specified options get handled appropriately.</div><div><br></div><div>Jordan</div><div><br></div><br><div><div>On Apr 14, 2013, at 16:54 , "Liu, Yaxun (Sam)" <<a href="mailto:Yaxun.Liu@amd.com">Yaxun.Liu@amd.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">
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<div class="WordSection1"><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks. I got it.<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">For those who are curious, the command line is like<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">clang -cc1 -cl-std=CL1.2 tmp.cl<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Sam<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span></p>
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<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in"><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Tanya Lattner [<a href="mailto:lattner@apple.com">mailto:lattner@apple.com</a>]
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<b>Sent:</b> Friday, April 12, 2013 6:01 PM<br>
<b>To:</b> Liu, Yaxun (Sam)<br>
<b>Cc:</b> <a href="mailto:cfe-dev@cs.uiuc.edu">cfe-dev@cs.uiuc.edu</a><br>
<b>Subject:</b> Re: [cfe-dev] clang does not support extern for OpenCL<o:p></o:p></span></p>
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</div><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">You need to set the cl-std value to 1.2. By default its 1.1.<o:p></o:p></p>
<div><p class="MsoNormal"><o:p> </o:p></p>
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<div><p class="MsoNormal">-Tanya<o:p></o:p></p>
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<div><p class="MsoNormal"><o:p> </o:p></p>
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<div><p class="MsoNormal">On Apr 12, 2013, at 2:40 PM, "Liu, Yaxun (Sam)" <<a href="mailto:Yaxun.Liu@amd.com">Yaxun.Liu@amd.com</a>> wrote:<o:p></o:p></p>
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<div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">I was trying to compile a simple OpenCL source with clang:<o:p></o:p></span></p>
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<div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">extern int foo(int, int);<o:p></o:p></span></p>
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<div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">I got an error msg:<o:p></o:p></span></p>
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<div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">clang.exe : tmp.cl:1:1: error: OpenCL does not support the 'extern' storage class specifier<o:p></o:p></span></p>
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<div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">OpenCL spec 1.2 says:<o:p></o:p></span></p>
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<div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">The<span class="apple-converted-space"> </span></span><code>typedef</code><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">,<span class="apple-converted-space"> </span></span><code>extern</code><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">,
and<span class="apple-converted-space"> </span></span><code>static</code><span class="apple-converted-space"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif""> </span></span><span style="font-size:11.0pt;font-family:"Verdana","sans-serif"">storage-class
specifiers are supported.<span class="apple-converted-space"> </span></span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Is this a bug? Or did I miss anything? Thanks.<o:p></o:p></span></p>
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<div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Sam<o:p></o:p></span></p>
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<div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
</div><p class="MsoNormal"><span style="font-size:13.5pt;font-family:"Helvetica","sans-serif"">_______________________________________________<br>
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</div><p class="MsoNormal"><o:p> </o:p></p>
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