Unable to run on macOS

[tublitzed]

Running make run yields the following:

cargo:rustc-link-search=native=/Users/tublitzed/aaarach/Codebase/GIT/syncstorage-rs/target/debug/build/libz-sys-153843b33fd7f4b5/out/lib
running: "cmake" "/Users/tublitzed/.cargo/registry/src/github.com-1ecc6299db9ec823/grpcio-sys-0.6.0/grpc" "-DgRPC_INSTALL=false" "-DgRPC_BUILD_CSHARP_EXT=false" "-DgRPC_BUILD_CODEGEN=false" "-DgRPC_BENCHMARK_PROVIDER=none" "-DgRPC_SSL_PROVIDER=package" "-DgRPC_ZLIB_PROVIDER=package" "-DCMAKE_INSTALL_PREFIX=/Users/tublitzed/aaarach/Codebase/GIT/syncstorage-rs/target/debug/build/grpcio-sys-0b3e427acdd6680a/out" "-DCMAKE_C_FLAGS= -ffunction-sections -fdata-sections -fPIC -m64 -arch x86_64" "-DCMAKE_C_COMPILER=/usr/bin/cc" "-DCMAKE_CXX_FLAGS= -stdlib=libc++ -ffunction-sections -fdata-sections -fPIC -m64 -arch x86_64" "-DCMAKE_CXX_COMPILER=/usr/bin/c++" "-DCMAKE_ASM_FLAGS= -ffunction-sections -fdata-sections -fPIC -m64 -arch x86_64" "-DCMAKE_ASM_COMPILER=/usr/bin/cc" "-DCMAKE_BUILD_TYPE=Debug"
-- Configuring incomplete, errors occurred!
See also "/Users/tublitzed/aaarach/Codebase/GIT/syncstorage-rs/target/debug/build/grpcio-sys-0b3e427acdd6680a/out/build/CMakeFiles/CMakeOutput.log".
See also "/Users/tublitzed/aaarach/Codebase/GIT/syncstorage-rs/target/debug/build/grpcio-sys-0b3e427acdd6680a/out/build/CMakeFiles/CMakeError.log".

--- stderr
CMake Warning at cmake/protobuf.cmake:51 (message):
  gRPC_PROTOBUF_PROVIDER is "module" but PROTOBUF_ROOT_DIR is wrong
Call Stack (most recent call first):
  CMakeLists.txt:207 (include)


CMake Error at /usr/local/Cellar/cmake/3.18.1/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:165 (message):
  Could NOT find OpenSSL, try to set the path to OpenSSL root folder in the
  system variable OPENSSL_ROOT_DIR (missing: OPENSSL_INCLUDE_DIR)
Call Stack (most recent call first):
  /usr/local/Cellar/cmake/3.18.1/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:458 (_FPHSA_FAILURE_MESSAGE)
  /usr/local/Cellar/cmake/3.18.1/share/cmake/Modules/FindOpenSSL.cmake:486 (find_package_handle_standard_args)
  cmake/ssl.cmake:66 (find_package)
  CMakeLists.txt:208 (include)

Looks like a revert on this addition should resolve, but that breaks things for ubuntu so we should find another way to address this.

[jrconlin]

We believe that the issue is related to Cargo's Resolve function not being as clever as I hoped.
See rust-lang/cargo#1197
rust-lang/cargo#7914

Instead of using the target features, it is recommended that explict platform feature requirements be specifed via options to the cargo build.

e.g. cargo build --features grpcio/openssl or similar.