xcodebuild - build all targets using command line

Question

I'm using the command line to build all the targets in my project. I have 3 targets in my project but the build file(.app) is getting created for one target.

Below is script

CONFIG="Ad Hoc"
SDK="iphoneos"
xcodebuild -alltargets -sdk "$SDK" -configuration "$CONFIG"

Answer 1

xcodebuild -project projectname.xcodeproj -alltargets