How to get invocation for Xcode “clang” compile-ti

I get a compile-time error in Xcode that includes this message

clang: error: linker command failed with exit code 1 (use -v to see invocation)

This -v is evidently a command-line option. I've run into this message before and have always been at a loss as to what I can do about it and why it's included if I can't do anything about it.

How can I employ the option in Xcode to see the invocation?

You can add the -v to the "Other Linker Flags" field in the project settings. Doing so in a test project here yields the complete linker invocation:

 "/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld"
 -demangle
 -dynamic
 -arch x86_64
 -macosx_version_min 10.8.0
 -syslibroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk
 -o /Users/carl/Library/Developer/Xcode/DerivedData/example-ewesimyvcwmjptdwzbkqoasrcppe/Build/Products/Debug/example
 -L/Users/carl/Library/Developer/Xcode/DerivedData/example-ewesimyvcwmjptdwzbkqoasrcppe/Build/Products/Debug
 -filelist /Users/carl/Library/Developer/Xcode/DerivedData/example-ewesimyvcwmjptdwzbkqoasrcppe/Build/Intermediates/example.build/Debug/example.build/Objects-normal/x86_64/example.LinkFileList
 -dependency_info /Users/carl/Library/Developer/Xcode/DerivedData/example-ewesimyvcwmjptdwzbkqoasrcppe/Build/Intermediates/example.build/Debug/example.build/Objects-normal/x86_64/example_dependency_info.dat
 -lSystem /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/5.0/lib/darwin/libclang_rt.osx.a
 -F/Users/carl/Library/Developer/Xcode/DerivedData/example-ewesimyvcwmjptdwzbkqoasrcppe/Build/Products/Debug