Parity build error

mac os 10.14.4

CMake-3.14.4 was installed by running the bootstrap script in CMake-3.14.4 directory.

then ran

$ git clone https://github.com/paritytech/parity-ethereum

$ cd parity-ethereum

$ cargo build --release --features final

I received the following output:

error: failed to run custom build command for parity-snappy-sys
v0.1.2 process didn’t exit successfully:
/Users/nancyibsen/parity-ethereum/target/release/build/parity-snappy-sys-d4afabb3fc9ca272/build-script-build
(exit code: 101)
— stdout running: “cmake” “/Users/nancyibsen/.cargo/registry/src/github.com-1ecc6299db9ec823/parity-snappy-sys-0.1.2/snappy”
“-DCMAKE_VERBOSE_MAKEFILE=ON”
“-DCMAKE_INSTALL_PREFIX=/Users/nancyibsen/parity-ethereum/target/release/build/parity-snappy-sys-8457319861bfa2d8/out” “-DCMAKE_C_FLAGS= -ffunction-sections -fdata-sections -fPIC -m64”
“-DCMAKE_C_COMPILER=/usr/bin/cc” “-DCMAKE_CXX_FLAGS=
-ffunction-sections -fdata-sections -fPIC -m64” “-DCMAKE_CXX_COMPILER=/usr/bin/c++” “-DCMAKE_BUILD_TYPE=Release”

— stderr thread ‘main’ panicked at ‘ failed to execute command: No such file or directory (os error 2) is cmake not installed?

build script failed, must exit now’,
/Users/nancyibsen/.cargo/registry/src/github.com-1ecc6299db9ec823/cmake-0.1.35/src/lib.rs:778:5
note: Run with RUST_BACKTRACE=1 environment variable to display a
backtrace.

warning: build failed, waiting for other jobs to finish… error:
build failed

Can anyone please point to what I am doing wrong?