问题
Am implementing barchart using coreplot...am getting the errors bellow which am unable to debug. Can anybody please help me out with the solution for this..Tried all ways but still couldn find the solution.
Ld /Users/MacMini/Library/Developer/Xcode/DerivedData/DashBoard-cmeoxsnbrnrzrkcwmgmfxqlfuzvo/Build/Products/Debug-iphonesimulator/DashBoard.app/DashBoard normal i386 cd /Users/MacMini/Desktop/DashBoard setenv MACOSX_DEPLOYMENT_TARGET 10.6 setenv PATH "/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin" /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/clang -arch i386 -isysroot /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.3.sdk -L/Users/MacMini/Library/Developer/Xcode/DerivedData/DashBoard-cmeoxsnbrnrzrkcwmgmfxqlfuzvo/Build/Products/Debug-iphonesimulator -L/Users/MacMini/Desktop/DashBoard -F/Users/MacMini/Library/Developer/Xcode/DerivedData/DashBoard-cmeoxsnbrnrzrkcwmgmfxqlfuzvo/Build/Products/Debug-iphonesimulator -F/Users/MacMini/Desktop/DashBoard -filelist /Users/MacMini/Library/Developer/Xcode/DerivedData/DashBoard-cmeoxsnbrnrzrkcwmgmfxqlfuzvo/Build/Intermediates/DashBoard.build/Debug-iphonesimulator/DashBoard.build/Objects-normal/i386/DashBoard.LinkFileList -mmacosx-version-min=10.6 -ObjC -all_load -Xlinker -objc_abi_version -Xlinker 2 -framework QuartzCore -lCorePlot-CocoaTouch -framework UIKit -framework Foundation -framework CoreGraphics -o /Users/MacMini/Library/Developer/Xcode/DerivedData/DashBoard-cmeoxsnbrnrzrkcwmgmfxqlfuzvo/Build/Products/Debug-iphonesimulator/DashBoard.app/DashBoard
Undefined symbols for architecture i386: "_CPTDecimalFromDouble", referenced from: -[Barchart viewDidLoad] in Barchart.o "_OBJC_CLASS_$_CPTGraphHostingView", referenced from: objc-class-ref in Barchart.o "_OBJC_CLASS_$_CPTXYGraph", referenced from: objc-class-ref in Barchart.o "_OBJC_CLASS_$_CPTPlotRange", referenced from: objc-class-ref in Barchart.o "_OBJC_CLASS_$_CPTBarPlot", referenced from: objc-class-ref in Barchart.o ld: symbol(s) not found for architecture i386 clang: error: linker command failed with exit code 1 (use -v to see invocation)
回答1:
This page (in the comments section) may help you with that: http://code.google.com/p/core-plot/wiki/UsingCorePlotInApplications
And this is a previous Stack Overflow question that looks like yours: Using Core Plot iPhone - Linker error
Here are some fixes I found on the pages above:
- In CorePlot-CocoaTouch project settings, change iOS Deployment Target to 3.2
- change Build Active Architecture Only to No for all configurations
- change C/C++ Compiler Version from GCC 4.2 to LLVM GCC 4.2
- Reinstall Core-Plot after downloading its latest stable version
来源：https://stackoverflow.com/questions/6660199/coreplot-for-implementing-barchart