<div dir="ltr"><a href="https://blog.kowalczyk.info/article/j/guide-to-predefined-macros-in-c-compilers-gcc-clang-msvc-etc..html">https://blog.kowalczyk.info/article/j/guide-to-predefined-macros-in-c-compilers-gcc-clang-msvc-etc..html</a> - looks like it might be a reasonable summary, suggests using __clang__ to detect the use of clang, and __clang_major__, __clang_minor__, __clang_patchlevel__ for specific version info. Looks like this is formally documented here: <a href="https://clang.llvm.org/docs/LanguageExtensions.html#builtin-macros">https://clang.llvm.org/docs/LanguageExtensions.html#builtin-macros</a><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Sep 27, 2021 at 11:54 PM John Emmas via llvm-dev <<a href="mailto:llvm-dev@lists.llvm.org">llvm-dev@lists.llvm.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
  
    
  
  <div bgcolor="#FFFFFF">
    <div>On 27/09/2021 19:43, David Blaikie
      wrote:<br>
    </div>
    <blockquote type="cite">
      <div dir="ltr">
        <div class="gmail_quote">
          <div><br>
            <a href="https://clang.llvm.org/docs/UsersManual.html#microsoft-extensions" target="_blank">https://clang.llvm.org/docs/UsersManual.html#microsoft-extensions</a><br>
            "<span>For
              compatibility with existing code that compiles with MSVC,
              clang defines the </span><code style="background-color:rgb(226,226,226);font-size:1em;color:rgb(51,51,51);text-align:justify"><span>_MSC_VER</span></code><span> and </span><code style="background-color:rgb(226,226,226);font-size:1em;color:rgb(51,51,51);text-align:justify"><span>_MSC_FULL_VER</span></code><span> macros."</span> </div>
        </div>
      </div>
    </blockquote>
    <br>
    Many thanks David.  And is there something that's usually defined
    for Clang but not for MSVC?  Something equivalent to CLANG_VER or
    CLANG_MAJOR_VER or whatever?<br>
    <br>
    John<br>
  </div>

_______________________________________________<br>
LLVM Developers mailing list<br>
<a href="mailto:llvm-dev@lists.llvm.org" target="_blank">llvm-dev@lists.llvm.org</a><br>
<a href="https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev" rel="noreferrer" target="_blank">https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev</a><br>
</blockquote></div>