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clangllvm32bit-64bitlibrariesbuilding

Build/install llvm/clang with both 32 & 64-bit support libraries

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).

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.

I should probably add: there's 32/64-bit sanitizer libraries (eg, libclang_rt.asan-i386.a), it's the rest of the support libraries in question.

Solution

  • Configure LLVM and Clang with -arch i386 -arch x86_64 i.e.:

    CFLAGS="-arch i386 -arch x86_64" \
CXXFLAGS="-arch i386 -arch x86_64" \
   ./configure --prefix=/prefix --enable-optimized --disable-assertions