build on MacOS

Since we’ve switched to C++ 17, and the default clang shipped with Xcode 9 does not support all the C++ 17 language features, it’s suggested to install clang using brew:

  1. brew install --with-toolchain llvm

and install all the necessary bits:

  1. brew install snappy ccache cmake pkg-config
  2. pip install cython

install FUSE if you want to build the FUSE support:

  1. brew cask install osxfuse

then, under the source directory of Ceph:

  1. mkdir build
  2. cd build
  3. cmake .. -DBOOST_J=4 \
  4.   -DCMAKE_C_COMPILER=/usr/local/opt/llvm/bin/clang \
  5.   -DCMAKE_CXX_COMPILER=/usr/local/opt/llvm/bin/clang++ \
  6.   -DCMAKE_EXE_LINKER_FLAGS="-L/usr/local/opt/llvm/lib" \
  7.   -DENABLE_GIT_VERSION=OFF \
  8.   -DWITH_MANPAGE=OFF \
  9.   -DWITH_LIBCEPHFS=OFF \
  10.   -DWITH_XFS=OFF \
  11.   -DWITH_KRBD=OFF \
  12.   -DWITH_LTTNG=OFF \
  13.   -DWITH_BABELTRACE=OFF \
  14.   -DWITH_BLUESTORE=OFF \
  15.   -DWITH_RADOSGW=OFF \
  16.   -DWITH_SPDK=OFF \
  17.   -DSNAPPY_ROOT_DIR=/usr/local/Cellar/snappy/1.1.7_1

The paths to nss and snappy might vary if newer versions of the packages are installed.

Also, please consider using boost v1.69 to address the bug of https://github.com/boostorg/atomic/issues/15.

Currently, the most practical uses for Ceph on MacOS might be FUSE and some other librados based applications.