<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>In the LLVM build system we have a distinction between tools and utilities. I suspect that the prefix would be applied to tools, but not utilities. AddLLVM.cmake has the distinguishing code between the add_llvm_tool and add_llvm_util functions.<br><br>-Chris</div><div><br>On Jul 20, 2016, at 1:39 PM, Sumanth Gundapaneni via llvm-dev <<a href="mailto:llvm-dev@lists.llvm.org">llvm-dev@lists.llvm.org</a>> wrote:<br><br></div><blockquote type="cite"><div><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"><meta name="Generator" content="Microsoft Word 15 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--><div class="WordSection1"><p class="MsoNormal"><span style="color:#1F497D">></span><span style="font-size:12.0pt;font-family:"Book Antiqua",serif;color:#943634"> <span lang="EN-IE">In any case, if prefixes are supported, why not universally apply to all rather than having special exemptions that are going to make generalised build configuration more difficult?<o:p></o:p></span></span></p><p class="MsoNormal"><span style="color:#1F497D">Agree. But, this is purely implementation specific.<o:p></o:p></span></p><p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p><div><div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in"><p class="MsoNormal"><b>From:</b> Martin J. O'Riordan [<a href="mailto:martin.oriordan@movidius.com">mailto:martin.oriordan@movidius.com</a>] <br><b>Sent:</b> Wednesday, July 20, 2016 2:53 PM<br><b>To:</b> 'Sumanth Gundapaneni' <<a href="mailto:sgundapa@codeaurora.org">sgundapa@codeaurora.org</a>><br><b>Cc:</b> 'LLVM Developers' <<a href="mailto:llvm-dev@lists.llvm.org">llvm-dev@lists.llvm.org</a>><br><b>Subject:</b> RE: [llvm-dev] [CMake] LLVM_PROGRAM_PREFIX support<o:p></o:p></p></div></div><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal"><span lang="EN-IE" style="font-size:12.0pt;font-family:"Book Antiqua",serif;color:#943634">I’m not against the idea, but why do we need prefixes at all? I understand with GCC the need to prefix with the target triple as it uses separate programs for each target, but I think that is not the case with LLVM/CLang.<o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-IE" style="font-size:12.0pt;font-family:"Book Antiqua",serif;color:#943634"><o:p> </o:p></span></p><p class="MsoNormal"><span lang="EN-IE" style="font-size:12.0pt;font-family:"Book Antiqua",serif;color:#943634">In any case, if prefixes are supported, why not universally apply to all rather than having special exemptions that are going to make generalised build configuration more difficult?<o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-IE" style="font-size:12.0pt;font-family:"Book Antiqua",serif;color:#943634"><o:p> </o:p></span></p><p class="MsoNormal"><span lang="EN-IE" style="font-size:12.0pt;font-family:"Book Antiqua",serif;color:#943634"> MartinO<o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-IE" style="font-size:12.0pt;font-family:"Book Antiqua",serif;color:#943634"><o:p> </o:p></span></p><div><div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in"><p class="MsoNormal"><b>From:</b> llvm-dev [<a href="mailto:llvm-dev-bounces@lists.llvm.org">mailto:llvm-dev-bounces@lists.llvm.org</a>] <b>On Behalf Of </b>Sumanth Gundapaneni via llvm-dev<br><b>Sent:</b> 20 July 2016 20:48<br><b>To:</b> <a href="mailto:llvm-dev@lists.llvm.org">llvm-dev@lists.llvm.org</a><br><b>Subject:</b> [llvm-dev] [CMake] LLVM_PROGRAM_PREFIX support<o:p></o:p></p></div></div><p class="MsoNormal"><span lang="EN-IE"><o:p> </o:p></span></p><p class="MsoNormal">Hi,<o:p></o:p></p><p class="MsoNormal"> I am planning to add support to CMake so that the binaries of llvm will have a prefix appended to it.<o:p></o:p></p><p class="MsoNormal">At this point, I am stuck on which approach to follow<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><!--[if !supportLists]--><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman""> </span></span><!--[endif]-->Append the prefix during build and install time. If so, this might involve tweaking lit infrastructure to make sure lit picks the prefixed binaries.<o:p></o:p></p><p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><!--[if !supportLists]--><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman""> </span></span><!--[endif]-->Append the prefix only during install time.<o:p></o:p></p><p class="MsoListParagraph" style="margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo2"><!--[if !supportLists]--><span style="mso-list:Ignore">a.<span style="font:7.0pt "Times New Roman""> </span></span><!--[endif]-->Either create symbolic links with prefixed names to existing binaries. On windows this might create copies bloating the install directory<o:p></o:p></p><p class="MsoListParagraph" style="margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo2"><!--[if !supportLists]--><span style="mso-list:Ignore">b.<span style="font:7.0pt "Times New Roman""> </span></span><!--[endif]-->Or rename the existing binaries with prefixed name.<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">We may not need all the binaries to be prefixed . It doesn’t make sense to prefix the utils FileCheck, not, count, llvm-config etc.<o:p></o:p></p><p class="MsoNormal">I might add two CMake variables <o:p></o:p></p><p class="MsoNormal">>LLVM_PROGRAM_PREFIX<o:p></o:p></p><p class="MsoNormal">>LLVM_PROGRAM_PREFIX_EXCLUSION_LIST (This will specify the list of binaries that don’t need a prefix)<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">Let me know your thoughts <o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">--Sumanth G<o:p></o:p></p></div></div></blockquote><blockquote type="cite"><div><span>_______________________________________________</span><br><span>LLVM Developers mailing list</span><br><span><a href="mailto:llvm-dev@lists.llvm.org">llvm-dev@lists.llvm.org</a></span><br><span><a href="http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev">http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev</a></span><br></div></blockquote></body></html>