======bitcoin编译======
编译环境：Ubuntu 16.04.2 LTS

官方源代码位置：[[https://github.com/bitcoin/bitcoin]]

梦游兔源码阅读进度：[[bitcoin源码分析|bitcoin源码分析]]

编译说明文档位置：./bitcoin-master/doc/build-unix.md

=====准备工作-依赖项=====

从源代码目录下这个位置获取编译说明：./bitcoin-master/doc/build-unix.md\\
我的系统是Ubuntu，所以只把Ubuntu相关的信息摘出来。\\
CentOS编译的过程在这里[[bitcoin编译centos|bitcoin编译centos]]

必要的依赖项:

^Library^Purpose^Description^
|libssl      | Crypto           | Random Number Generation, Elliptic Curve Cryptography|
|libboost    | Utility          | Library for threading, data structures, etc|
|libevent    | Networking       | OS independent asynchronous networking|

可选的依赖项:

^Library^Purpose^Description^
|miniupnpc   | UPnP Support     | Firewall-jumping support|
|libdb4.8    | Berkeley DB      | Wallet storage (only needed when wallet enabled)|
|qt          | GUI              | GUI toolkit (only needed when GUI enabled)|
|protobuf    | Payments in GUI  | Data interchange format used for payment protocol (only needed when GUI enabled)|
|libqrencode | QR codes in GUI  | Optional for generating QR codes (only needed when GUI enabled)|
|univalue    | Utility          | JSON parsing and encoding (bundled version will be used unless --with-system-univalue passed to configure)|
|libzmq3     | ZMQ notification | Optional, allows generating ZMQ notifications (requires ZMQ version >= 4.x)|


依赖项安装命令：

	sudo apt-get update
	sudo apt-get upgrade
	sudo apt-get install build-essential libtool autotools-dev automake pkg-config libssl-dev libevent-dev bsdmainutils python3
	sudo apt-get install libboost-all-dev
	sudo apt-get install software-properties-common
	sudo add-apt-repository ppa:bitcoin/bitcoin
	sudo apt-get update
	sudo apt-get install libdb4.8-dev libdb4.8++-dev
	sudo apt-get install libminiupnpc-dev
	sudo apt-get install libzmq3-dev
	sudo apt-get install libqt5gui5 libqt5core5a libqt5dbus5 qttools5-dev qttools5-dev-tools libprotobuf-dev protobuf-compiler
	sudo apt-get install libqrencode-dev

=====编译源代码=====

从官方地址下载源代码：

	git clone https://github.com/bitcoin/bitcoin.git

进入源代码目录，检查依赖，开始编译：

	cd bitcoin
	./autogen.sh
	./configure
	make install
	
=====编译过程中遇到的错误=====
内存不足：
	virtual memory exhausted: Cannot allocate memory
	Makefile:5514: recipe for target 'libbitcoin_server_a-init.o' failed
	make[2]: *** [libbitcoin_server_a-init.o] Error 1
	make[2]: Leaving directory '/home/ubuntu/bitcoin-master/bitcoin/src'
	Makefile:9278: recipe for target 'install-recursive' failed
	make[1]: *** [install-recursive] Error 1
	make[1]: Leaving directory '/home/ubuntu/bitcoin-master/bitcoin/src'
	Makefile:740: recipe for target 'install-recursive' failed
	make: *** [install-recursive] Error 1
解决方法：
	./configure CXXFLAGS="--param ggc-min-expand=1 --param ggc-min-heapsize=32768"