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</o:shapelayout></xml><![endif]--></head><body lang=EN-IE link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:#943634;mso-fareast-language:EN-US'>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 style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:#943634;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:#943634;mso-fareast-language:EN-US'>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 style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:#943634;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:#943634;mso-fareast-language:EN-US'> MartinO<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:#943634;mso-fareast-language:EN-US'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US>From:</span></b><span lang=EN-US> llvm-dev [mailto:llvm-dev-bounces@lists.llvm.org] <b>On Behalf Of </b>Sumanth Gundapaneni via llvm-dev<br><b>Sent:</b> 20 July 2016 20:48<br><b>To:</b> llvm-dev@lists.llvm.org<br><b>Subject:</b> [llvm-dev] [CMake] LLVM_PROGRAM_PREFIX support<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-US>Hi,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> 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></span></p><p class=MsoNormal><span lang=EN-US>At this point, I am stuck on which approach to follow<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>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></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>Append the prefix only during install time.<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:72.0pt;text-indent:-18.0pt;mso-list:l0 level2 lfo2'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>a.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>Either create symbolic links with prefixed names to existing binaries. On windows this might create copies bloating the install directory<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:72.0pt;text-indent:-18.0pt;mso-list:l0 level2 lfo2'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>b.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>Or rename the existing binaries with prefixed name.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>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></span></p><p class=MsoNormal><span lang=EN-US>I might add two CMake variables <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>>LLVM_PROGRAM_PREFIX<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>>LLVM_PROGRAM_PREFIX_EXCLUSION_LIST (This will specify the list of binaries that don’t need a prefix)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Let me know your thoughts <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>--Sumanth G<o:p></o:p></span></p></div></body></html>