安装篇：

错误1:

Could not find a package configuration file provided by "LLVM" (requested

version 4.0) with any of the following names

Add the installation prefix of "LLVM" to CMAKE_PREFIX_PATH or set

"LLVM_DIR" to a directory containing one of the above files.  If "LLVM"

provides a separate development package or SDK, be sure it has been

installed.

vim ~/.bash_profile

加入配置：

export LLVM_DIR=/usr/local/Cellar/llvm\@4/4.0.1/lib/cmake

保存生效

source ~/.bash_profile

运行安装

rm -rf build/

git submodule update --init --recursive

./eosio_build.sh

再不行请把llvm都删除，重新安装

brew install llvm@4

启动篇：

错误1:

3190000 block_log_exception: Block log exception

Block log was not setup properly with genesis information.

#rm -rf  ~/Library/Application\ Support/eosio

错误2:

3020000 fork_database_exception: Fork database exception

fork database is inconsistent with shared memory

./nodeos -e -p eosio --plugin eosio::chain_api_plugin --plugin eosio::history_api_plugin --delete-all-blocks

加上--delete-all-blocks启动参数即可