Its not possible to compile STEEM blockchain on the latest macOS version (Mojave) following the official instructions. For developers using macOS this is inconvenient.

cmake errors

BZIP2_LIBRARIES missing:

  Could NOT find bzip2 (missing: BZIP2_LIBRARIES)
Call Stack (most recent call first):
  /usr/local/Cellar/cmake/3.12.3/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:378 (_FPHSA_FAILURE_MESSAGE)
  libraries/vendor/rocksdb/cmake/modules/Findbzip2.cmake:17 (find_package_handle_standard_args)
  libraries/vendor/rocksdb/CMakeLists.txt:82 (find_package)

ZLIB_LIBRARIES also will be missing and will get a simialr error message

Fixing Zlib error

Assuming that you are in $HOME/steem/build, do the following from the terminal to fix the ZLib error

wget https://www.zlib.net/zlib-1.2.11.tar.gz ; cd zlib-1.2.11 ; ./configure ; make 

Fixing the BZIP Lib Error

Run the following from the command prompt:

cd $HOME/steem/build/bzip2-1.0.6/ ; sudo make -n 

Getting things work

(If you are using the fancy cmake GUI, you can set paths like this)

To just get things done, clone STEEM from the github & build as follows after compiling and keeping bzip2 and zlib in their respective directories. P

export BZIP2_LIBRARIES=$HOME/steem/build/bzip2-1.0.6/lib
export ZLIB_LIBRARIES=$HOME/steem/build/zlib-1.2.11
export OPENSSL_ROOT_DIR=$(brew --prefix)/Cellar/openssl/1.0.2o_1/
export SNAPPY_LIBRARIES=$(brew --prefix)/Cellar/snappy/1.1.7_1/lib/
export SNAPPY_INCLUDE_DIR=$(brew --prefix)/Cellar/snappy/1.1.7_1/include/

cmake -DCMAKE_BUILD_TYPE=Release ..
make steemd cli_wallet

build steemd & cli_wallet

[11:30 PM] bobinson@air 🖖 [~/hack/steem/build]`make install steemd cli_wallet

I hope this helps developers.