<div dir="ltr"><br><div class="gmail_extra"><br><br><div class="gmail_quote">On Wed, Jul 24, 2013 at 1:03 PM, Jeremy Huddleston Sequoia <span dir="ltr"><<a href="mailto:jeremyhu@apple.com" target="_blank">jeremyhu@apple.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div class="im"><blockquote type="cite"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">4) Building clang using installed llvm<br>
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It looks like there is some support for building clang against an installed llvm by setting CLANG_PATH_TO_LLVM_BUILD. This fails miserably in part because the installed llvm cmake files reference build time paths, but even after fixing that, there are tons of build failures. I'm guessing this is still a work in progress, but if I should file bugs, please let me know.</blockquote>
<div><br></div><div>This is probably not a very good idea because clang evolves in lock-step with LLVM. Unless the installed LLVM is the same revision as the clang you are building, </div></div></div></div></blockquote><div>
<br></div></div><div>They match revision. We just need to split the build into two subports to break dependency cycles, and I'm hoping to avoid rebuilding the core libraries a second time.</div><div class="im"><br></div>
</div></blockquote><div><br></div><div>Ah, OK. Definitely a bug in our build system then.</div><div><br></div><div>-- Sean Silva</div></div><br></div></div>