<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 Aug 3, 2015, at 10:40 AM, Schlottke-Lakemper, Michael <<a href="mailto:m.schlottke-lakemper@aia.rwth-aachen.de" class="">m.schlottke-lakemper@aia.rwth-aachen.de</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
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<blockquote type="cite" class="">The only question I want to raise is, what about NDEBUG? There are headers that conditionalize on NDEBUG, which could lead to ABI incompatibility in the C++ API.<br class="">
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<span 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; float: none; display: inline !important;" class="">Is
it something that can be fixed or would it be too complicated to handle?<span class="Apple-converted-space"> </span></span><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="">
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would be nice in general to be able to link a “Non assert” build of Clang with an “Assert" version of LLVM (and vice-versa).<span class="Apple-converted-space"> </span></span><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="">
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<div class="">From my user perspective, it would be desirable to set as few flags as possible. NDEBUG is used outside of clang/llvm as well (including our software), so if it were returned by llvm-config, it would effectively preclude us from using llvm-config
(as it would effectively turn off all checks even when desired).</div></div></div></blockquote><div><br class=""></div><div>If as Chris said it is *required* for ABI compatibility, my understanding is that you don’t really have any choice: if you want to compile/link at the C++ level with LLVM you’ll have to include this flag or you’ll run into strange runtime issue.</div><div><br class=""></div><div>— </div><div>Mehdi</div><div><br class=""></div></div></body></html>