diff --git a/circle.yml b/circle.yml
new file mode 100644
index 0000000..367a4ab
--- /dev/null
+++ b/circle.yml
@@ -0,0 +1,21 @@
+# circle.yml #
+# machine:
+#   go:
+#     version: 1.7.4
+
+# customize dependencies
+dependencies:
+  pre:
+    - sudo apt-get update
+    - sudo apt-get install libx11-dev
+    # - sudo apt-get install libgtkglextmm-x11-dev
+    # - sudo apt-get install libghc6-x11-dev
+    # - sudo apt-get install libgl1-mesa-swx11-dev
+    - sudo apt-get install xorg-dev
+    - sudo apt-get install libxtst-dev libpng++-dev  
+    - sudo apt-get install xcb libxcb-xkb-dev x11-xkb-utils libx11-xcb-dev libxkbcommon-x11-dev
+    - sudo apt-get install libxkbcommon-dev
+
+test:
+  post:
+    - bash <(curl -s https://codecov.io/bash)    
\ No newline at end of file
diff --git a/robotgo.go b/robotgo.go
index 3579e8c..ffa53c3 100644
--- a/robotgo.go
+++ b/robotgo.go
@@ -15,7 +15,7 @@ package robotgo
 	#cgo darwin CFLAGS: -x objective-c  -Wno-deprecated-declarations -I/usr/local/opt/libpng/include -I/usr/local/opt/zlib/include
 	#cgo darwin LDFLAGS: -framework Cocoa -framework OpenGL -framework IOKit -framework Carbon -framework CoreFoundation -L/usr/local/opt/libpng/lib -lpng -L/usr/local/opt/zlib/lib -lz
 //#elif defined(USE_X11)
-	#cgo linux CFLAGS:-I/usr/src
+	#cgo linux CFLAGS:-std=c11 -I/usr/src
 	#cgo linux LDFLAGS:-L/usr/src -lpng -lz -lX11 -lXtst -lX11-xcb -lxcb -lxcb-xkb -lxkbcommon -lxkbcommon-x11 -lm
 //#endif
 	#cgo windows LDFLAGS: -lgdi32 -luser32 -lpng -lz