** Executing cmake command

-- Trying to enable ccache
-- Using compiler cache /usr/bin/ccache
-- The C compiler identification is Clang 7.0.1
-- The CXX compiler identification is Clang 7.0.1
-- Check for working C compiler: /usr/bin/clang
-- Check for working C compiler: /usr/bin/clang -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/clang++
-- Check for working CXX compiler: /usr/bin/clang++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- No build type specified; using RelWithDebInfo
-- Using supported compiler Clang-7.0.1
-- Found PkgConfig: /usr/bin/pkg-config (found version "0.29") 
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Looking for pthread_create
-- Looking for pthread_create - not found
-- Check if compiler accepts -pthread
-- Check if compiler accepts -pthread - yes
-- Found Threads: TRUE  
-- Checking for module 'cairo-fc'
--   Found cairo-fc, version 1.16.0
-- Checking for module 'alsa'
--   Found alsa, version 1.1.8
-- Checking for module 'libcurl'
--   Found libcurl, version 7.64.0
-- Checking for module 'libmpdclient'
--   Found libmpdclient, version 2.16
-- Found Libiw: /usr/lib/x86_64-linux-gnu/libiw.so  
-- Checking for module 'libpulse'
--   Found libpulse, version 12.2
-- Checking for module 'xcb-composite'
--   No package 'xcb-composite' found
CMake Error at /usr/share/cmake-3.13/Modules/FindPkgConfig.cmake:452 (message):
  A required package was not found
Call Stack (most recent call first):
  /usr/share/cmake-3.13/Modules/FindPkgConfig.cmake:622 (_pkg_check_modules_internal)
  cmake/common/utils.cmake:95 (pkg_check_modules)
  cmake/03-libs.cmake:20 (querylib)
  CMakeLists.txt:34 (include)


-- Configuring incomplete, errors occurred!
See also "/home/manyroads/build/polybar-3.3.1/polybar/build/CMakeFiles/CMakeOutput.log".
See also "/home/manyroads/build/polybar-3.3.1/polybar/build/CMakeFiles/CMakeError.log".
** Failed to generate build... read output to get a hint of what went wrong