Duplicate Symbols IOS when sharing static Library on sub projects

I have a problem sharing a static library to my xcode sub projects. Assuming the structure of my project is like this:

Main.xcodeproj
|
|_Cordova.xcodeproj
|
|_SubProject1.xcodeproj
|
|_SubProject2.xcodeproj

I have create the static library for:

• SubProject1
• SubProject2

These libraries needs to be linked with the Cordova Static Library.

I've done this by:

• Open SubProject1
• Add the Cordova static library in the "Link Binary With Libraries" section

then

• Open SubProject2
• Add the Cordova static library in the "Link Binary With Libraries" section

After that,

• Opened the Main.xcodeproj
• Add Target Depedendency for SubProject1
• Add Target Depedendency for SubProject2
• Add Link Binary With Libraries for SubProject1 static library
• Add Link Binary With Libraries for SubProject2 static library

If i build i obtain the following errors:

duplicate symbol _OBJC_IVAR_$_CDVViewController._commandQueue in:
    /Users/xxx/Library/Developer/Xcode/DerivedData/appxxx/Build/Products/Debug-iphonesimulator/libSubProject1.a(CDVViewController.o)
    /Users/xxx/Library/Developer/Xcode/DerivedData/appxxx/Build/Products/Debug-iphonesimulator/libSubProject2.a(CDVViewController.o)

duplicate symbol _OBJC_IVAR_$_CDVViewController._commandDelegate in:
    /Users/xxx/Library/Developer/Xcode/DerivedData/appxxx/Build/Products/Debug-iphonesimulator/libSubProject1.a(CDVViewController.o)
    /Users/xxx/Library/Developer/Xcode/DerivedData/appxxx/Build/Products/Debug-iphonesimulator/libSubProject2.a(CDVViewController.o)

How can I share this library across these two sub projects?

Thank you so much

There's no need to link both SubProjects with Cordova, you can just link the Main target to Cordova.