missing required architecture x86_64 in file libCorePlot-CocoaTouch.a

Question

According to the Ray Wenderlich tutorial, I done the following :

Step 1 - I downloaded CorePlot_1.4.zip o

Answer 1

If you want a 64-bit version of Core Plot, you'll have to build a new version of the static library. Arm64 builds require iOS 7 but Core Plot supports earlier versions, too, so the pre-built library is 32-bit only.

Open CorePlot-CocoaTouch.xcodeproj and change the architecture settings to "Standard Architectures (including 64-bit)". Either build the "Universal Library" target and include the resulting static library in place of the one included with Core Plot 1.4 or use the dependent project setup instead.