diff --git a/.gitignore b/.gitignore
index 4a09c0f..19fb396 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+compile_commands.json
 CMakeCache.txt
 CMakeFiles/*
 cmake_install.cmake
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 135e02f..9ebba7a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,6 @@
 # leave this above project(pdf2htmlEX)
 # set default build type to Release
+set(CMAKE_EXPORT_COMPILE_COMMANDS, ON)
 set(CMAKE_BUILD_TYPE Release CACHE STRING "Build configuration (Debug, Release, RelWithDebInfo, MinSizeRel)")
 
 project(pdf2htmlEX)