ubuntu环境下编译bitcoin(比特币)全过程
1.首先从github上clone最新的bitcoin源代码
git clone https://github.com/bitcoin/bitcoin.git
2.进入clone下来的代码目录，查看当前版本(这里我切换到了v0.20.0版本)
cd ./bitcoin git tag -l git checkout v0.20.0
3.安装autoconf，安装成功之后运行代码目录下的./autogen.sh
sudo apt install autoconf ./autogen.sh
4.出现了错误信息，configure: error: PKG_PROG_PKG_CONFIG macro not found. Please install pkg-config and re-run autogen.sh，提示安装libtool，如果没有安装gcc，g++还需要安装这两项，安装完成之后再一次运行./autogen.sh应该就可以成功了，运行成功之后会在代码目录下生成./configure
sudo apt install libtool gcc g++ ./autogen.sh
5.运行./configure，出现错误，需要安装pkg-config之后重新./autogen.sh(倒退回上面步骤了)
sudo apt install pkg-config ./autogen.sh
6.再次报错，configure: error: libdb_cxx headers missing, Bitcoin Core requires this library for wallet functionality (--disable-wallet to disable wallet functionality)，安装libdb++-dev可解决问题，安装之后重新./configure
sudo apt install libdb++-dev
7.出现了一个警告和一个错误，
checking for QT5... no
configure: WARNING: Qt dependencies not found; bitcoin-qt frontend will not be built
checking whether to build Bitcoin Core GUI... no
checking for Berkeley DB C++ headers... default
configure: error: Found Berkeley DB other than 4.8, required for portable wallets (--with-incompatible-bdb to ignore or --disable-wallet to disable wallet functionality)
或者qt5安装之后有警告
configure: WARNING: LRELEASE not found; bitcoin-qt frontend will not be built
需要安装qt5-default和qttools5-dev-tools，以及从源代码编译Berkeley DB
sudo apt install qt5-default qttools5-dev-tools
编译Berkeley DB
wget http://download.oracle.com/berkeley-db/db-4.8.30.NC.tar.gz tar -xzvf db-4.8.30.NC.tar.gz cd db-4.8.30.NC/build_unix ../dist/configure --enable-cxx make sudo make install
8.加入参数重新运行./configure
./configure CPPFLAGS="-I/usr/local/BerkeleyDB.4.8/include -O2" LDFLAGS="-L/usr/local/BerkeleyDB.4.8/lib"
报错
checking for boostlib >= 1.47.0 (104700)... configure: We could not detect the boost libraries (version MINIMUM_REQUIRED_BOOST or higher). If you have a staged boost library (still not installed) please specify $BOOST_ROOT in your environment and do not give a PATH to --with-boost option. If you are sure you have boost installed, then check your version number looking in <boost/version.hpp>. See http://randspringer.de/boost for more documentation.
checking whether the Boost::System library is available... no
checking whether the Boost::Filesystem library is available... no
checking whether the Boost::Thread library is available... no
checking whether the Boost::Unit_Test_Framework library is available... no
checking for dynamic linked boost test... no
checking for mismatched boost c++11 scoped enums... ok
checking for QR... no
checking for EVENT... no
configure: error: libevent version 2.0.21 or greater not found.
把这些依赖一下装齐了吧
sudo apt install libevent-dev libzmq5-dev doxygen libboost1.58-all-dev
然后重新
./configure CPPFLAGS="-I/usr/local/BerkeleyDB.4.8/include -O2" LDFLAGS="-L/usr/local/BerkeleyDB.4.8/lib"
这个时候依然还是有一个警告，目前暂未找到解决的方法，但是不影响编译的功能
configure: WARNING: "xgettext is required to update qt translations"
9../configure没有问题，之后就可以make了，bitcoin项目比较大编译的时间可能需要半小时，耐心等待吧
