Need help in iOS lib armv7 and 64 bit version - ios

Question

I'm creating a project with Core-Plot lib.
I add the lib with static way.
How can I run my app in 32 + 64 bit devices?
if I run lipo libCorePlot-CocoaTouch.a -info
console response:
Architectures in the fat file: libCorePlot-CocoaTouch.a are: armv7 armv7s arm64
But this library works only with 32bit devices/simulator with 64bit simulator give me this error:
ld: warning: ignoring file PATH/libCorePlot-CocoaTouch.a, missing required architecture i386 in file PATH/libCorePlot-CocoaTouch.a (3 slices)
Undefined symbols for architecture i386:
"_CPTDecimalFromCGFloat", referenced from:
-[HomeViewController configureSecondPlots] in HomeViewController.o
-[HomeViewController configureSecondAxes] in HomeViewController.o
"_CPTDecimalFromInteger", referenced from:
-[HomeViewController configureSecondAxes] in HomeViewController.o
"_OBJC_CLASS_$_CPTAxisLabel", referenced from:
objc-class-ref in HomeViewController.o
"_OBJC_CLASS_$_CPTColor", referenced from:
objc-class-ref in HomeViewController.o
"_OBJC_CLASS_$_CPTFill", referenced from:
objc-class-ref in HomeViewController.o
"_OBJC_CLASS_$_CPTGraphHostingView", referenced from:
objc-class-ref in HomeViewController.o
"_OBJC_CLASS_$_CPTMutableLineStyle", referenced from:
objc-class-ref in HomeViewController.o
"_OBJC_CLASS_$_CPTMutableTextStyle", referenced from:
objc-class-ref in HomeViewController.o
"_OBJC_CLASS_$_CPTPieChart", referenced from:
objc-class-ref in HomeViewController.o
"_OBJC_CLASS_$_CPTPlotSymbol", referenced from:
objc-class-ref in HomeViewController.o
"_OBJC_CLASS_$_CPTScatterPlot", referenced from:
objc-class-ref in HomeViewController.o
"_OBJC_CLASS_$_CPTTextLayer", referenced from:
objc-class-ref in HomeViewController.o
"_OBJC_CLASS_$_CPTXYGraph", referenced from:
objc-class-ref in HomeViewController.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)
How can I fix this problem?
Thank you

Answer 1

Combine both libraries and make a universal binary
lipo -create <simulator_lib>.a <device_lib>.a -output lib.a

Answer 2

Open the Core Plot iOS project (CorePlot-CocoaTouch.xcodeproj), update the architecture build settings to include 64-bit, and build the "Universal Library" target. This will create a folder called "Release-universal" in your build folder containing a universal library with all architectures (device and simulator) and copies of all of the header files.