title: Build/install llvm/clang with both 32 & 64-bit support libraries
body: <p>My (built from source) llvm/clang install is able to create 32/64-bit executables fine, but when I created the installation it only produced 64-bit libraries (eg, libclang).</p>
  
  <p>I've sifted through their documentation, looked through the configure help, etc.  As best I can tell my only option is to configure targeting a 32-bit host machine and do a separate installation.</p>
  
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  <p>I should probably add: there's 32/64-bit sanitizer libraries (eg, <code>libclang_rt.asan-i386.a</code>), it's the rest of the support libraries in question.</p>