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<p class="MsoNormal">Hi all,</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Just joined this dl, so apologies if this is not the right place for such a question. Please redirect me if appropriate.</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’ve been trying to use the new --target=wasm option on Windows, with the minimal codebase from the repo at
<a href="https://github.com/PetterS/clang-wasm">https://github.com/PetterS/clang-wasm</a> (which targets Linux). Whether I use clang++ or clang-cl (with what I believe to be the right options) I get an error re the MSVC headers trying to redefine size_t, e.g.
as shown below:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">C:\temp\clang-wasm>"C:\Program Files\LLVM\bin\clang++.exe" -c --target=wasm32 -Os -flto -nostdlib -fvisibility=hidden -std=c++14 -ffunction-sections -fdata-sections -fms-extensions -fms-compatibility -fms-compatibility-version=19.16.27026
-I "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\include" -I "C:\Program Files (x86)\Windows Kits\10\Include\10.0.17763.0\ucrt" -D _M_IX86 -o library.o library.cpp<o:p></o:p></p>
<p class="MsoNormal">In file included from library.cpp:1:<o:p></o:p></p>
<p class="MsoNormal">In file included from C:\Program Files (x86)\Windows Kits\10\Include\10.0.17763.0\ucrt\memory.h:12:<o:p></o:p></p>
<p class="MsoNormal">In file included from C:\Program Files (x86)\Windows Kits\10\Include\10.0.17763.0\ucrt\corecrt_memory.h:13:<o:p></o:p></p>
<p class="MsoNormal">In file included from C:\Program Files (x86)\Windows Kits\10\Include\10.0.17763.0\ucrt\corecrt.h:10:<o:p></o:p></p>
<p class="MsoNormal">C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\include\vcruntime.h:184:30: error: typedef redefinition with different types ('unsigned int' vs 'unsigned long')<o:p></o:p></p>
<p class="MsoNormal"> typedef unsigned int size_t;<o:p></o:p></p>
<p class="MsoNormal"> ^<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Any ideas on this? Being a new feature I can’t find too many docs or examples, so I may be messing up something simple.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Using clang-cl I get similar errors. (And need to set the include directories and architecture (-D _<i>M</i>_IX86) explicitly to avoid other errors – which I though clang-cl should set automatically when running from the Developer Command
Prompt). Without --target=wasm with similar (but valid .exe) code, I don’t see any errors.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">You can see my build commands/flags with comments in my fork at
<a href="https://github.com/billti/clang-wasm/blob/master/build.bat">https://github.com/billti/clang-wasm/blob/master/build.bat</a> (using a bat file to keep it simple at this point).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph" style="margin-left:-15.6pt;mso-list:l0 level1 lfo1">
Bill</li></ul>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986">
Mail</a> for Windows 10</p>
<p class="MsoNormal"><o:p> </o:p></p>
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