diff --git a/.gitignore b/.gitignore
index 538d023..90e98a1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,7 @@
 bin/
-vsproject/
\ No newline at end of file
+vsproject/
+CMakeCache.txt
+CMakeFiles/
+Makefile
+cmake_install.cmake
+imgui.ini
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6d043c6..0463d69 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -20,6 +20,11 @@ set(SOURCES
 	libs/imgui/examples/imgui_impl_sdl.cpp
 )
 
+# pkg
+if (UNIX)
+  find_package(PkgConfig REQUIRED)
+endif()
+
 # sdl2
 if(WIN32 OR APPLE OR NOT ${USE_PKG_CHECK_SDL})
   find_package(SDL2 REQUIRED)