<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Oct 31, 2014, at 4:45 PM, David Blaikie <<a href="mailto:dblaikie@gmail.com" class="">dblaikie@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><br class="Apple-interchange-newline"><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><div class="gmail_quote" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">On Fri, Oct 31, 2014 at 4:31 PM, Bob Wilson<span class="Apple-converted-space"> </span><span dir="ltr" class=""><<a href="mailto:bob.wilson@apple.com" target="_blank" class="">bob.wilson@apple.com</a>></span><span class="Apple-converted-space"> </span>wrote:<br class=""><blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex;"><div style="word-wrap: break-word;" class=""><br class=""><div class=""><span class=""><blockquote type="cite" class=""><div class="">On Oct 31, 2014, at 4:19 PM, Eric Christopher <<a href="mailto:echristo@gmail.com" target="_blank" class="">echristo@gmail.com</a>> wrote:</div><br class=""><div class=""><br class=""><br class=""><div class="gmail_quote">On Fri Oct 31 2014 at 3:11:22 PM Tom Stellard <<a href="mailto:tom@stellard.net" target="_blank" class="">tom@stellard.net</a>> wrote:<br class=""><blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex;">Hi,<br class=""><br class="">I would like to propose deprecating the autoconf build system at some<br class="">point in the future. Maintaining two build systems is a hassle not<br class="">only for this project, but also for other projects that use LLVM<br class="">and have to deal with the slight differences in output between the two<br class="">build systems.<br class=""><br class="">It seems like most people are using CMake at this point, so my questions<br class="">to the community are:<br class=""><br class="">- Is there any technical reason why the remaining autoconf users can't switch<br class=""> <span class="Apple-converted-space"> </span>to CMake?<br class=""><br class=""></blockquote><div class=""><br class=""></div><div class="">I think Bob was the lead on keeping the autoconf system last year when this came up, there is a PR somewhere in the system about the blocking things that need to work in cmake to get it to happen. I don't know where we are on that list or what features people still need.</div></div></div></blockquote><div class=""><br class=""></div></span>I’ve come around to the point of accepting the inevitability of moving to cmake, but I think there’s quite a bit of work to be done to get everything to work. The compiler-rt build in particular is problematic.</div></div></blockquote><div class=""><br class=""></div><div class="">What're the particular problems there? I've been using compiler-rt/asan built from cmake for a while now, but I don't know the details (perhaps there are particular features, etc)</div></div></div></blockquote><div><br class=""></div>Answering that question is the first part of what needs to be done.</div><div><br class=""></div><div>I’m pretty sure that cmake has nothing that is close to the equivalent of what is in make/platform/clang_darwin.mk, for example.</div><div><br class=""><blockquote type="cite" class=""><div class=""><div class="gmail_quote" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><div class=""> </div><blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex;"><div style="word-wrap: break-word;" class=""><span class=""><div class=""><br class=""><blockquote type="cite" class=""><div class=""><div class="gmail_quote"><div class=""><br class=""></div><div class="">Personally I still use the autoconf system, but am willing to remove it if we can get to a single system, but all of the requirements need to be handled first.</div><div class=""><br class=""></div><div class="">-eric</div><div class=""> </div><blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex;">For example, I personally use automake, and the only reason I don't<br class="">use CMake is because it doesn't produce a single shared object<br class="">(e.g.<span class="Apple-converted-space"> </span><a href="http://libllvm-3.6.0svn.so/" target="_blank" class="">libLLVM-3.6.0svn.so</a>).<br class=""><br class="">- What is a reasonable timeframe to allow the remaining autoconf users<br class=""> <span class="Apple-converted-space"> </span>a chance to migrate to CMake?</blockquote></div></div></blockquote><br class=""></div></span><div class="">I don’t know how to answer that. Someone will need to do the work to first identify all the problems and then to get them fixed.</div><div class=""><br class=""></div><div class="">Converting everything to cmake will take quite a lot of work. In comparison, the minor hassle of keeping the makefiles working for a bit longer seems pretty insignificant.</div></div><br class="">_______________________________________________<br class="">LLVM Developers mailing list<br class=""><a href="mailto:LLVMdev@cs.uiuc.edu" class="">LLVMdev@cs.uiuc.edu</a> <a href="http://llvm.cs.uiuc.edu/" target="_blank" class="">http://llvm.cs.uiuc.edu</a><br class=""><a href="http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev" target="_blank" class="">http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev</a></blockquote></div></div></blockquote></div><br class=""></body></html>