diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8277d394..173a373e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,39 +1,35 @@
 cmake_minimum_required(VERSION 3.8)
 project(ccls LANGUAGES CXX)
 
-list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/)
-include(DefaultCMakeBuildType)
-
-# Required Clang version
-option(LLVM_ENABLE_RTTI "-fno-rtti if OFF. This should match LLVM libraries" OFF)
-option(USE_SHARED_LLVM "Link against libLLVM.so instead separate LLVM{Option,Support,...}" OFF)
 option(USE_SYSTEM_RAPIDJSON "Use system RapidJSON instead of the git submodule if exists" ON)
 
 # Sources for the executable are specified at end of CMakeLists.txt
 add_executable(ccls "")
 
-### Compile options
+### Default build type
 
-# CMake default compile flags:
-# MSVC + Clang(Windows):
-#   debug: /MDd /Zi /Ob0 /Od /RTC1
-#   release: /MD /O2 /Ob2 /DNDEBUG
-# GCC + Clang(Linux):
-#   debug: -g
-#   release: -O3 -DNDEBUG
+set(DEFAULT_CMAKE_BUILD_TYPE Release)
+
+# CMAKE_BUILD_TYPE is not available if a multi-configuration generator is used
+# (eg Visual Studio generators)
+if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+  message(STATUS "Setting build type to '${DEFAULT_CMAKE_BUILD_TYPE}' as none \
+was specified.")
+  set(CMAKE_BUILD_TYPE ${DEFAULT_CMAKE_BUILD_TYPE}
+      CACHE STRING "Choose the type of build." FORCE)
+
+  # Set the possible values of build type for cmake-gui
+  set_property(CACHE CMAKE_BUILD_TYPE
+               PROPERTY STRINGS Debug Release MinSizeRel RelWithDebInfo)
+endif()
+
+### Compile options
 
 # Enable C++17 (Required)
 set_property(TARGET ccls PROPERTY CXX_STANDARD 17)
 set_property(TARGET ccls PROPERTY CXX_STANDARD_REQUIRED ON)
 set_property(TARGET ccls PROPERTY CXX_EXTENSIONS OFF)
 
-if(NOT LLVM_ENABLE_RTTI)
-  # releases.llvm.org libraries are compiled with -fno-rtti
-  # The mismatch between lib{clang,LLVM}* and ccls can make libstdc++ std::make_shared return nullptr
-  # _Sp_counted_ptr_inplace::_M_get_deleter
-  target_compile_options(ccls PRIVATE -fno-rtti)
-endif()
-
 # CMake sets MSVC for both MSVC and Clang(Windows)
 if(MSVC)
   # Common MSVC/Clang(Windows) options
@@ -72,9 +68,41 @@ endif()
 
 ### Libraries
 
-# See cmake/FindClang.cmake
-find_package(Clang 7.0.0)
-target_link_libraries(ccls PRIVATE Clang::Clang)
+find_package(Clang REQUIRED)
+
+target_link_libraries(ccls PRIVATE
+  clangIndex
+  clangFormat
+  clangTooling
+  clangToolingInclusions
+  clangToolingCore
+  clangFrontend
+  clangParse
+  clangSerialization
+  clangSema
+  clangAST
+  clangLex
+  clangDriver
+  clangBasic
+)
+
+if(LLVM_LINK_LLVM_DYLIB)
+  target_link_libraries(ccls PRIVATE LLVM)
+else()
+  # In llvm 7, clangDriver headers reference LLVMOption
+  target_link_libraries(ccls PRIVATE LLVMOption LLVMSupport)
+endif()
+
+if(NOT LLVM_ENABLE_RTTI)
+  # releases.llvm.org libraries are compiled with -fno-rtti
+  # The mismatch between lib{clang,LLVM}* and ccls can make libstdc++ std::make_shared return nullptr
+  # _Sp_counted_ptr_inplace::_M_get_deleter
+  if(MSVC)
+    target_compile_options(ccls PRIVATE /GR-)
+  else()
+    target_compile_options(ccls PRIVATE -fno-rtti)
+  endif()
+endif()
 
 # Enable threading support
 set(THREADS_PREFER_PTHREAD_FLAG ON)
@@ -90,13 +118,34 @@ endif()
 
 ### Definitions
 
-target_compile_definitions(ccls PRIVATE
-                           DEFAULT_RESOURCE_DIRECTORY=R"\(${Clang_RESOURCE_DIR}\)")
+# Find Clang resource directory with Clang executable.
+
+find_program(CLANG_EXECUTABLE clang)
+if(NOT CLANG_EXECUTABLE)
+  message(FATAL_ERROR "clang executable not found.")
+endif()
+
+execute_process(
+  COMMAND ${CLANG_EXECUTABLE} -print-resource-dir
+  RESULT_VARIABLE CLANG_FIND_RESOURCE_DIR_RESULT
+  OUTPUT_VARIABLE CLANG_RESOURCE_DIR
+  ERROR_VARIABLE CLANG_FIND_RESOURCE_DIR_ERROR
+  OUTPUT_STRIP_TRAILING_WHITESPACE
+)
+
+if(CLANG_FIND_RESOURCE_DIR_RESULT)
+  message(FATAL_ERROR "Error retrieving Clang resource directory with Clang \
+          executable. Output:\n ${CLANG_FIND_RESOURCE_DIR_ERROR}")
+endif()
+
+set_property(SOURCE src/utils.cc APPEND PROPERTY COMPILE_DEFINITIONS
+             CLANG_RESOURCE_DIRECTORY=R"\(${CLANG_RESOURCE_DIR}\)")
 
 ### Includes
 
 target_include_directories(ccls PRIVATE src)
-target_include_directories(ccls SYSTEM PRIVATE third_party)
+target_include_directories(ccls SYSTEM PRIVATE
+  third_party ${LLVM_INCLUDE_DIRS} ${CLANG_INCLUDE_DIRS})
 
 if(USE_SYSTEM_RAPIDJSON)
   find_package(RapidJSON QUIET)
@@ -110,13 +159,6 @@ target_include_directories(ccls SYSTEM PRIVATE ${RapidJSON_INCLUDE_DIRS})
 
 install(TARGETS ccls RUNTIME DESTINATION bin)
 
-### Tools
-
-# We use glob here since source files are already manually added with
-# target_sources further down
-file(GLOB SOURCES src/*.cc src/*.h src/serializers/*.cc src/serializers/*.h
-                  src/messages/*.h src/messages/*.cc)
-
 ### Sources
 
 target_sources(ccls PRIVATE third_party/siphash.cc)
diff --git a/cmake/DefaultCMakeBuildType.cmake b/cmake/DefaultCMakeBuildType.cmake
deleted file mode 100644
index ae440bf5..00000000
--- a/cmake/DefaultCMakeBuildType.cmake
+++ /dev/null
@@ -1,14 +0,0 @@
-set(DEFAULT_CMAKE_BUILD_TYPE Release)
-
-# CMAKE_BUILD_TYPE is not available if a multi-configuration generator is used
-# (eg Visual Studio generators)
-if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
-  message(STATUS "Setting build type to '${DEFAULT_CMAKE_BUILD_TYPE}' as none \
-was specified.")
-  set(CMAKE_BUILD_TYPE ${DEFAULT_CMAKE_BUILD_TYPE}
-      CACHE STRING "Choose the type of build." FORCE)
-
-  # Set the possible values of build type for cmake-gui
-  set_property(CACHE CMAKE_BUILD_TYPE
-               PROPERTY STRINGS Debug Release MinSizeRel RelWithDebInfo)
-endif()
diff --git a/cmake/FindClang.cmake b/cmake/FindClang.cmake
deleted file mode 100644
index 078395dd..00000000
--- a/cmake/FindClang.cmake
+++ /dev/null
@@ -1,153 +0,0 @@
-#.rst
-# FindClang
-# ---------
-#
-# Find Clang and LLVM libraries required by ccls
-#
-# Results are reported in the following variables::
-#
-#   Clang_FOUND         - True if headers and requested libraries were found
-#   Clang_EXECUTABLE    - Clang executable
-#   Clang_RESOURCE_DIR  - Clang resource directory
-#   Clang_VERSION       - Clang version as reported by Clang executable
-#
-# The following :prop_tgt:`IMPORTED` targets are also defined::
-#
-#   Clang::Clang        - Target for all required Clang libraries and headers
-#
-# This module reads hints about which libraries to look for and where to find
-# them from the following variables::
-#
-#   CLANG_ROOT          - If set, only look for Clang components in CLANG_ROOT
-#
-# Example to link against Clang target::
-#
-#   target_link_libraries(<target> PRIVATE Clang::Clang)
-
-### Definitions
-
-# Wrapper macro's around the find_* macro's from CMake that only search in
-# CLANG_ROOT if it is defined
-
-macro(_Clang_find_library VAR NAME)
-  # Windows needs lib prefix
-  if (CLANG_ROOT)
-    find_library(${VAR} NAMES ${NAME} lib${NAME}
-                 NO_DEFAULT_PATH PATHS ${CLANG_ROOT} PATH_SUFFIXES lib)
-  else()
-    find_library(${VAR} NAMES ${NAME} lib${NAME})
-  endif()
-endmacro()
-
-macro(_Clang_find_add_library NAME)
-  _Clang_find_library(${NAME}_LIBRARY ${NAME})
-  list(APPEND _Clang_LIBRARIES ${${NAME}_LIBRARY})
-endmacro()
-
-macro(_Clang_find_path VAR INCLUDE_FILE)
-  if (CLANG_ROOT)
-    find_path(${VAR} ${INCLUDE_FILE}
-              NO_DEFAULT_PATH PATHS ${CLANG_ROOT} PATH_SUFFIXES include)
-  else()
-    find_path(${VAR} ${INCLUDE_FILE})
-  endif()
-endmacro()
-
-macro(_Clang_find_program VAR NAME)
-  if (CLANG_ROOT)
-    find_program(${VAR} ${NAME}
-                 NO_DEFAULT_PATH PATHS ${CLANG_ROOT} PATH_SUFFIXES bin)
-  else()
-    find_program(${VAR} ${NAME})
-  endif()
-endmacro()
-
-### Start
-
-set(_Clang_REQUIRED_VARS Clang_LIBRARY Clang_INCLUDE_DIR Clang_EXECUTABLE
-                         Clang_RESOURCE_DIR Clang_VERSION
-                         LLVM_INCLUDE_DIR LLVM_BUILD_INCLUDE_DIR)
-
-_Clang_find_library(Clang_LIBRARY clangIndex)
-_Clang_find_add_library(clangFormat)
-_Clang_find_add_library(clangTooling)
-
-_Clang_find_library(clangToolingInclusions_LIBRARY clangToolingInclusions)
-if (clangToolingInclusions_LIBRARY)
-  list(APPEND _Clang_LIBRARIES ${clangToolingInclusions_LIBRARY})
-endif()
-
-_Clang_find_add_library(clangToolingCore)
-_Clang_find_add_library(clangRewrite)
-_Clang_find_add_library(clangFrontend)
-_Clang_find_add_library(clangParse)
-_Clang_find_add_library(clangSerialization)
-_Clang_find_add_library(clangSema)
-_Clang_find_add_library(clangAnalysis)
-_Clang_find_add_library(clangEdit)
-_Clang_find_add_library(clangAST)
-_Clang_find_add_library(clangLex)
-_Clang_find_add_library(clangDriver)
-_Clang_find_add_library(clangBasic)
-if(USE_SHARED_LLVM)
-  _Clang_find_add_library(LLVM)
-else()
-  _Clang_find_add_library(LLVMMCParser)
-  _Clang_find_add_library(LLVMMC)
-  _Clang_find_add_library(LLVMBitReader)
-  _Clang_find_add_library(LLVMOption)
-  _Clang_find_add_library(LLVMProfileData)
-  _Clang_find_add_library(LLVMCore)
-  _Clang_find_add_library(LLVMBinaryFormat)
-  _Clang_find_add_library(LLVMSupport)
-  _Clang_find_add_library(LLVMDemangle)
-endif()
-_Clang_find_path(Clang_INCLUDE_DIR clang-c/Index.h)
-_Clang_find_path(Clang_BUILD_INCLUDE_DIR clang/Driver/Options.inc)
-_Clang_find_path(LLVM_INCLUDE_DIR llvm/PassInfo.h)
-_Clang_find_path(LLVM_BUILD_INCLUDE_DIR llvm/Config/llvm-config.h)
-
-_Clang_find_program(Clang_EXECUTABLE clang)
-if(Clang_EXECUTABLE)
-  # Find Clang resource directory with Clang executable
-  execute_process(COMMAND ${Clang_EXECUTABLE} -print-resource-dir
-                  RESULT_VARIABLE _Clang_FIND_RESOURCE_DIR_RESULT
-                  OUTPUT_VARIABLE Clang_RESOURCE_DIR
-                  ERROR_VARIABLE _Clang_FIND_RESOURCE_DIR_ERROR
-                  OUTPUT_STRIP_TRAILING_WHITESPACE)
-
-  if(_Clang_FIND_RESOURCE_DIR_RESULT)
-    message(FATAL_ERROR "Error retrieving Clang resource directory with Clang \
-executable. Output:\n ${_Clang_FIND_RESOURCE_DIR_ERROR}")
-  endif()
-
-  # Find Clang version
-  set(_Clang_VERSION_REGEX "([0-9]+)\\.([0-9]+)\\.([0-9]+)")
-  execute_process(
-    COMMAND ${Clang_EXECUTABLE} --version
-    OUTPUT_VARIABLE Clang_VERSION
-  )
-  string(REGEX MATCH ${_Clang_VERSION_REGEX} Clang_VERSION ${Clang_VERSION})
-endif()
-
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(Clang
-  FOUND_VAR Clang_FOUND
-  REQUIRED_VARS ${_Clang_REQUIRED_VARS}
-  VERSION_VAR Clang_VERSION
-)
-
-if(Clang_FOUND AND NOT TARGET Clang::Clang)
-  add_library(Clang::Clang UNKNOWN IMPORTED)
-  set_target_properties(Clang::Clang PROPERTIES
-    IMPORTED_LOCATION ${Clang_LIBRARY}
-    INTERFACE_INCLUDE_DIRECTORIES "${Clang_INCLUDE_DIR};${Clang_BUILD_INCLUDE_DIR};${LLVM_INCLUDE_DIR};${LLVM_BUILD_INCLUDE_DIR}")
-  if(NOT MSVC)
-    find_package(Curses REQUIRED)
-    find_package(ZLIB REQUIRED)
-  endif()
-  set_property(TARGET Clang::Clang PROPERTY IMPORTED_LINK_INTERFACE_LIBRARIES "${_Clang_LIBRARIES};${CURSES_LIBRARIES};${ZLIB_LIBRARIES}")
-  if(MINGW)
-    set_property(TARGET Clang::Clang APPEND_STRING PROPERTY IMPORTED_LINK_INTERFACE_LIBRARIES ";version")
-  endif()
-endif()
diff --git a/src/utils.cc b/src/utils.cc
index f37ac58e..46728522 100644
--- a/src/utils.cc
+++ b/src/utils.cc
@@ -189,5 +189,5 @@ int ReverseSubseqMatch(std::string_view pat, std::string_view text,
   return -1;
 }
 
-std::string GetDefaultResourceDirectory() { return DEFAULT_RESOURCE_DIRECTORY; }
-}
+std::string GetDefaultResourceDirectory() { return CLANG_RESOURCE_DIRECTORY; }
+} // namespace ccls