LLVM 3.5 fails to link

问题

When compiling with the experimental LLVM3.5 libraries link the following link errors appear:

/usr/lib/llvm-3.5/lib/libLLVMSupport.a(Process.o): In function llvm::sys::Process::FileDescriptorHasColors(int)': (.text+0x85b): undefined reference tosetupterm' /usr/lib/llvm-3.5/lib/libLLVMSupport.a(Process.o): In function llvm::sys::Process::FileDescriptorHasColors(int)': (.text+0x87a): undefined reference totigetnum' /usr/lib/llvm-3.5/lib/libLLVMSupport.a(Process.o): In function llvm::sys::Process::FileDescriptorHasColors(int)': (.text+0x888): undefined reference toset_curterm' /usr/lib/llvm-3.5/lib/libLLVMSupport.a(Process.o): In function llvm::sys::Process::FileDescriptorHasColors(int)': (.text+0x890): undefined reference todel_curterm'

The link command line was generated with llvm-config, so why is this failing?

回答1:

llvm-config is not adding the link option for the Terminfo library. Add

-ltinfo

To link in the library and all should be well.

回答2:

Add llvm-config --system-libs in link option

来源：https://stackoverflow.com/questions/21477407/llvm-3-5-fails-to-link