Compile error on iPhone 4s simulator

[IceHawk66]

First of all, I can compile my app on iPhone 6 and iPhone 5s without any issues. On iPhone 4S simulator the build fails with these errors:

ld: warning: ignoring file /Users/icehawk/Library/Developer/Xcode/DerivedData/Series_Log-ezkivtqtsxghfjbwjdpxuktbujgr/Build/Products/Debug-iphonesimulator/Charts.framework/Charts, file was built for x86_64 which is not the architecture being linked (i386): /Users/icehawk/Library/Developer/Xcode/DerivedData/Series_Log-ezkivtqtsxghfjbwjdpxuktbujgr/Build/Products/Debug-iphonesimulator/Charts.framework/Charts
Undefined symbols for architecture i386:
"Charts.ChartDataEntry.__allocating_init (value : Swift.Double, xIndex : Swift.Int) -> Charts.ChartDataEntry", referenced from:
Series_Log.DetailTVC.updateChart (Charts.PieChartView, values : [Swift.Double]) -> () in DetailTVC.o
"Charts.PieChartDataSet.__allocating_init (yVals : [Charts.ChartDataEntry]?, label : Swift.String?) -> Charts.PieChartDataSet", referenced from:
Series_Log.DetailTVC.updateChart (Charts.PieChartView, values : [Swift.Double]) -> () in DetailTVC.o
"Charts.ChartData.__allocating_init (xVals : [__ObjC.NSObject]?, dataSet : Charts.IChartDataSet?) -> Charts.ChartData", referenced from:
Series_Log.DetailTVC.updateChart (Charts.PieChartView, values : [Swift.Double]) -> () in DetailTVC.o
"type metadata accessor for Charts.PieChartData", referenced from:
Series_Log.DetailTVC.updateChart (Charts.PieChartView, values : [Swift.Double]) -> () in DetailTVC.o
"type metadata accessor for Charts.PieChartView", referenced from:
type metadata accessor for Charts.PieChartView! in DetailTVC.o
"type metadata accessor for Charts.ChartDataEntry", referenced from:
Series_Log.DetailTVC.updateChart (Charts.PieChartView, values : [Swift.Double]) -> () in DetailTVC.o
type metadata accessor for [Charts.ChartDataEntry] in DetailTVC.o
"type metadata accessor for Charts.PieChartDataSet", referenced from:
Series_Log.DetailTVC.updateChart (Charts.PieChartView, values : [Swift.Double]) -> () in DetailTVC.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Any advice on how to fix this? Thanks in advance.

[domingguss]

tried clearing derived data?

[IceHawk66]

yes

[liuxuan30]

Undefined symbols for architecture i386

Please check your CPU arch and maybe set the correct one.