Building libcxx & libcxxabi

Overview

• Building libcxx & libcxxabi
  • Requirements
  • Prerequisites
  • Building libcxxabi
  • Building libcxx
  • Conclusion

Building libcxx & libcxxabi

Only follow these steps if you're willing to compile SPMod on Linux using Clang.

Requirements

• Git
• CMake 3.4.3+
• Ninja
• Clang 5+
• LLVM Linker (optional)

Prerequisites

1. Clone libc++ and libc++abi repositiories
   git clone -b release_60 https://github.com/llvm-mirror/libcxx.git
git clone -b release_60 https://github.com/llvm-mirror/libcxxabi.git
2. Create folders outside cloned repositories, f.e. build_libcxx and build_libcxxabi
3. Change compiler to Clang
   export CC=clang CXX=clang++
   Notice
   Some Linux distributions may have named clang differently by adding version as suffix, f.e.
   For Clang 5.0
   export CC=clang-5.0 CXX=clang++-5.0
   For Clang 6.0
   export CC=clang-6.0 CXX=clang++-6.0
4. (Optional) Overwrite default linker
   ln -sf /path/to/ld.lld /usr/bin/ld
   Notice
   Some Linux distributions may have named linker differently by adding version as suffix, f.e.
   For Clang 5.0
   ln -sf /path/to/ld.lld-5.0 /usr/bin/ld
   For Clang 6.0
   ln -sf /path/to/ld.lld-6.0 /usr/bin/ld

Building libcxxabi

1. Enter to build_libcxxabi
   cd /path/to/build_libcxxabi
2. Generate build files cmake -G Ninja -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_FLAGS=-m32 -DLIBCXXABI_LIBCXX_INCLUDES=../libcxx/include ../libcxxabi/
3. Build
   ninja

Building libcxx

1. Enter to build_libcxx
   cd /path/to/build_libcxx
2. Generate build files
   cmake -G Ninja -DCMAKE_BUILD_TYPE=Release -DLIBCXX_CXX_ABI=libcxxabi -DLIBCXX_CXX_ABI_INCLUDE_PATHS=../libcxxabi/include -DLIBCXX_BUILD_32_BITS=ON -DCMAKE_SHARED_LINKER_FLAGS="-L../build_libcxxabi/lib" ../libcxx/
3. Build
   ninja

Conclusion

If you have successfully completed all the steps above, you can follow here, otherwise please follow those steps more carefully or open an issue if you have any questions.