<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<p>There's an open bug for this, or at least there was.... maybe
autoclosed? <br>
</p>
<p><a href="https://bugs.llvm.org/show_bug.cgi?id=45880">https://bugs.llvm.org/show_bug.cgi?id=45880</a></p>
<p>Exactly as you say an 'out of the box' clang build in recent mac
os will fail to find the "system" headers. You can read the thread
here:</p>
<p><a
href="https://lists.llvm.org/pipermail/cfe-dev/2019-September/063394.html">https://lists.llvm.org/pipermail/cfe-dev/2019-September/063394.html</a></p>
<div class="moz-cite-prefix">On 6/22/20 5:06 PM, via cfe-dev wrote:<br>
</div>
<blockquote type="cite" cite="mid:365561592816472@mail.yandex.ru">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div>Last night, I solved this issue, but partially.</div>
<div>Starting from Mojave "/usr/include" was removed from Mac OS.
You should either install headers explicitly, or pass
"--sysroot" parameter during compilation.</div>
<div>I say "partially", because imho it breaks default use-case.
Since this moment you can't use clang out of box just like that:
"clang++ test.cpp". I love Apple because you can use things out
of the box. But, alas, this is not about clang anymore.</div>
<div> </div>
<div>I think we should either update guidelines, or improve
sysroot computation in Driver.</div>
<div> </div>
<div>Anybody? Any thoughts on that?</div>
<div> </div>
<div>-Stepan</div>
<div> </div>
<div>21.06.2020, 12:09, "via cfe-dev"
<a class="moz-txt-link-rfc2396E" href="mailto:cfe-dev@lists.llvm.org"><cfe-dev@lists.llvm.org></a>:</div>
<blockquote>
<div>My bad. Clang-9 also fails.</div>
<div> </div>
<div>21.06.2020, 11:23, "via cfe-dev" <<a
href="mailto:cfe-dev@lists.llvm.org" moz-do-not-send="true">cfe-dev@lists.llvm.org</a>>:</div>
<blockquote>
<div>Hi! I have downloaded precompiled clang 10 on a virgin
Mac OS Catalina installation. My attempt to compile C++ code
fails with error:</div>
<div> </div>
<div>
<div>/Users/stepan/Downloads/clang+llvm-10.0.0-x86_64-apple-darwin/bin/../include/c++/v1/wchar.h:118:15:
fatal error:</div>
<div>'wchar.h' file not found</div>
<div>#include_next <wchar.h></div>
<div>^~~~~~~~~</div>
<div>1 error generated.</div>
<div> </div>
<div>This is kind of know error end was described in stack
overflow:</div>
<div><a
href="https://stackoverflow.com/questions/26185978/macos-wchar-h-file-not-found"
moz-do-not-send="true">https://stackoverflow.com/questions/26185978/macos-wchar-h-file-not-found</a></div>
<div> </div>
<div>The reason is a wrong configuration of sysroot or
include directories.</div>
<div> </div>
<div>And yet I have a question. As long a it is a
precompiled clang for macos, isn't it possible to fix it
and make it working out of box?</div>
<div> </div>
<div>BTW: clang-9 works without any issues.</div>
<div> </div>
<div>Thanks!</div>
<div>Stepan</div>
<div> </div>
</div>
,
<p>_______________________________________________<br>
cfe-dev mailing list<br>
<a href="mailto:cfe-dev@lists.llvm.org"
moz-do-not-send="true">cfe-dev@lists.llvm.org</a><br>
<a
href="https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev"
moz-do-not-send="true">https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev</a></p>
</blockquote>
,
<p>_______________________________________________<br>
cfe-dev mailing list<br>
<a href="mailto:cfe-dev@lists.llvm.org" moz-do-not-send="true">cfe-dev@lists.llvm.org</a><br>
<a
href="https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev"
moz-do-not-send="true">https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev</a></p>
</blockquote>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<pre class="moz-quote-pre" wrap="">_______________________________________________
cfe-dev mailing list
<a class="moz-txt-link-abbreviated" href="mailto:cfe-dev@lists.llvm.org">cfe-dev@lists.llvm.org</a>
<a class="moz-txt-link-freetext" href="https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev">https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev</a>
</pre>
</blockquote>
<pre class="moz-signature" cols="72">--
Jens B. Jorgensen
<a class="moz-txt-link-abbreviated" href="mailto:jbj1@ultraemail.net">jbj1@ultraemail.net</a>
</pre>
</body>
</html>