llvm-link [options] filename ...
llvm-link takes several LLVM bitcode files and links them together into a single LLVM bitcode file. It writes the output file to standard output, unless the -o option is used to specify a filename.
Enable binary output on terminals. Normally, llvm-link will refuse to write raw bitcode output if the output stream is a terminal. With this option, llvm-link will write raw bitcode regardless of the output device.
Specify the output file name. If filename is “-”, then llvm-link will write its output to standard output.
Write output in LLVM intermediate language (instead of bitcode).
If specified, llvm-link prints a human-readable version of the output bitcode file to standard error.
Print a summary of command line options.
Verbose mode. Print information about what llvm-link is doing. This typically includes a message for each bitcode file linked in and for each library found.
If llvm-link succeeds, it will exit with 0. Otherwise, if an error occurs, it will exit with a non-zero value.