LLVM : Unknown CMake command "add_llvm_loadable_module".

编写LLVM Pass的文档：HowToWriteALLVMPass

1.写Makefile

# Makefile for hello pass

# Path to top level of LLVM hierarchy
LEVEL = ../../..

# Name of the library to build
LIBRARYNAME = Hello

# Make the shared library become a loadable module so the tools can
# dlopen/dlsym on the resulting library.
LOADABLE_MODULE = 1

# Include the makefile implementation stuff
include $(LEVEL)/Makefile.common

2.写Hello.cpp

3.得到Hello.so。

clang++ `llvm-config --libs --ldflags --cxxflags ` Hello.cpp -std=c++0x -fPIC -shared -o Hello.so

4.使用Hello.so。

opt -load /usr/local/arm/llvm3.8.0/lib/Transforms/Hello/Hello.so -hello <hello.bc> /dev/null

在尝试编写一个LLVM pass时，遇到以下问题(未解决，最终使用的第3步的方法)：

CMake Error at CMakeLists.txt:16 (include):

  include could not find load file:

    AddLLVM

CMake Error at CMakeLists.txt:17 (add_llvm_loadable_module):
  Unknown CMake command "add_llvm_loadable_module".

-- Configuring incomplete, errors occurred!

Building LLVM with CMake 点击打开链接