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<p> Forgot to mention you can build static version only, shared
fails with <a class="moz-txt-link-freetext" href="https://reviews.llvm.org/P7981">https://reviews.llvm.org/P7981</a><br>
</p>
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<p><br>
</p>
<br>
<div id="smartTemplate4-quoteHeader">------ Original Message ------<br>
Subject: Re: [cfe-dev] [libc++] Compiling with MinGW-w64<br>
Date: Sat, 1 Apr 2017 00:11:37 +0200<br>
To: Reid Kleckner, Eric Fiselier, Cfe-dev<br>
From: Mateusz Mikuła</div>
<blockquote
cite="mid:04afeb3f-306d-aac9-181b-aacc06abfe79@gmail.com"
type="cite">
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
Fantastic but looks like those libs are not linked when using
libc++ with Clang: <a moz-do-not-send="true"
class="moz-txt-link-freetext"
href="https://reviews.llvm.org/P7980">https://reviews.llvm.org/P7980</a><br>
<p>Patches I applied to 4.0.0 release sources:</p>
<p>libc++: Reid's patch and this big, ugly and invasive patch <a
moz-do-not-send="true"
href="https://github.com/mati865/MINGW-packages/blob/clang/mingw-w64-clang/0401-mingw-w64-hack-and-slash-fixes-for-libc.patch">[1]
</a><br>
</p>
<p>libc++abi: <a moz-do-not-send="true"
href="https://github.com/mati865/MINGW-packages/blob/clang/mingw-w64-clang/0701-fix-visibility-for-libc-abi-on-win32.patch">[2]</a>
which is most likely fixed by <a moz-do-not-send="true"
href="https://github.com/llvm-mirror/libcxxabi/commit/54227aec1d6116c936afa576e2ea36ca3e94b29c">D26949
[3]</a><br>
</p>
<p>libunwind: potentially dangerous <a moz-do-not-send="true"
href="https://github.com/mati865/MINGW-packages/blob/clang/mingw-w64-clang/0601-libunwind-add-support-for-mingw-w64.patch">[4]</a><br>
</p>
<p><br>
</p>
<p>[1]
<a moz-do-not-send="true" class="moz-txt-link-freetext"
href="https://github.com/mati865/MINGW-packages/blob/clang/mingw-w64-clang/0401-mingw-w64-hack-and-slash-fixes-for-libc.patch">https://github.com/mati865/MINGW-packages/blob/clang/mingw-w64-clang/0401-mingw-w64-hack-and-slash-fixes-for-libc.patch</a></p>
<p>[2]
<a moz-do-not-send="true" class="moz-txt-link-freetext"
href="https://github.com/mati865/MINGW-packages/blob/clang/mingw-w64-clang/0701-fix-visibility-for-libc-abi-on-win32.patch">https://github.com/mati865/MINGW-packages/blob/clang/mingw-w64-clang/0701-fix-visibility-for-libc-abi-on-win32.patch</a></p>
<p>[3]
<a moz-do-not-send="true" class="moz-txt-link-freetext"
href="https://github.com/llvm-mirror/libcxxabi/commit/54227aec1d6116c936afa576e2ea36ca3e94b29c">https://github.com/llvm-mirror/libcxxabi/commit/54227aec1d6116c936afa576e2ea36ca3e94b29c</a><br>
</p>
<p>[4]
<a moz-do-not-send="true" class="moz-txt-link-freetext"
href="https://github.com/mati865/MINGW-packages/blob/clang/mingw-w64-clang/0601-libunwind-add-support-for-mingw-w64.patch">https://github.com/mati865/MINGW-packages/blob/clang/mingw-w64-clang/0601-libunwind-add-support-for-mingw-w64.patch</a></p>
<p><br>
</p>
<p>Regards,</p>
<p>Mateusz<br>
</p>
<br>
<div id="smartTemplate4-quoteHeader">------ Original Message ------<br>
Subject: Re: [cfe-dev] [libc++] Compiling with MinGW-w64<br>
Date: Thu, 30 Mar 2017 17:29:24 -0700<br>
To: Mateusz Mikuła, Eric Fiselier, Cfe-dev<br>
From: Reid Kleckner</div>
<blockquote
cite="mid:CACs=tyK8ZPH5CDj=LkP0auaom3C6T=AYYvg_cfGJytLJzU8NzQ@mail.gmail.com"
type="cite">
<div dir="ltr">I ran into this today and took a stab at fixing
it:
<div><a moz-do-not-send="true"
href="https://reviews.llvm.org/D31518">https://reviews.llvm.org/D31518</a><br>
</div>
<div><br>
</div>
<div>It's probably a terrible fix, but I needed most of those
mingw libraries to get basic programs linking. I could
rewrite the patch using more auto-conf-y style tests, but
they are slow and unreliable.</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Fri, Mar 17, 2017 at 3:34 PM,
Mateusz Mikuła via cfe-dev <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:cfe-dev@lists.llvm.org" target="_blank">cfe-dev@lists.llvm.org</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<p>Hello,</p>
<p>I'm planing to get libc++ compiling with MinGW-w64,
right now without patches it fails with:</p>
<blockquote>
<p>CMake Error at projects/libcxx/CMakeLists.<wbr>txt:396
(message):<br>
C++11 or greater is required but the compiler does
not support c++11</p>
</blockquote>
<p>It is caused by adding `-nodefaultlibs` flag (it
passes it's own check <a moz-do-not-send="true"
href="https://github.com/llvm-mirror/libcxx/blob/master/cmake/config-ix.cmake#L27"
target="_blank">[1]</a>). However many following
checks fail due to undefined references, results with
gcc <a moz-do-not-send="true"
href="https://reviews.llvm.org/P7975"
target="_blank">[2]</a> and clang <a
moz-do-not-send="true"
href="https://reviews.llvm.org/P7976"
target="_blank">[3]</a>.</p>
<p>Hard-coding 0 for LIBCXX_SUPPORTS_NODEFAULTLIBS_<wbr>FLAG
allows it go finish configuration and fail during
build (that's another story). <br>
</p>
<p>`-nodefaultlibs` appears several times in libc++ and
libc++abi code and I'm not sure about cleanest way to
fix/workaround it.</p>
<p>Any suggestions?<br>
</p>
<p><br>
</p>
<p>[1] <a moz-do-not-send="true"
class="m_8192861613337471926moz-txt-link-freetext"
href="https://github.com/llvm-mirror/libcxx/blob/master/cmake/config-ix.cmake#L27"
target="_blank">https://github.com/llvm-<wbr>mirror/libcxx/blob/master/<wbr>cmake/config-ix.cmake#L27</a></p>
<p>[2] <a moz-do-not-send="true"
class="m_8192861613337471926moz-txt-link-freetext"
href="https://reviews.llvm.org/P7975"
target="_blank">https://reviews.llvm.org/P7975</a><br>
</p>
<p>[3] <a moz-do-not-send="true"
class="m_8192861613337471926moz-txt-link-freetext"
href="https://reviews.llvm.org/P7976"
target="_blank">https://reviews.llvm.org/P7976</a></p>
<p><br>
</p>
<p>Thanks,</p>
<p>Mateusz<br>
</p>
</div>
<br>
______________________________<wbr>_________________<br>
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href="http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev"
rel="noreferrer" target="_blank">http://lists.llvm.org/cgi-bin/<wbr>mailman/listinfo/cfe-dev</a><br>
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