missing required architecture x86_64 in file libCorePlot-CocoaTouch.a
According to the Ray Wenderlich tutorial , I done the following : Step 1 - I downloaded CorePlot_1.4.zip on the official website Step 2 - I added to my project the CorePlotHeaders folder and the static library named libCorePlot-CocoaTouch.a (checking “Copy items into destination group’s folder (if needed)” ) Step 3 - I added into Other Linker Flags field the following : -ObjC Step 4 - I checked into Link Binary with Libraries if libCorePlot-CocoaTouch.a and QuartzCore frameworks were here Result : When I compile my project, it works fine when I'm using Iphone Retina (4-Inch) . But when I'm