freecad+geant4安装教程
目前FreeCAD现成版本是不可用的，通过源码编译进行撰写，其中官方安装有很多错误，Geant4+FreeCAD以79G的内存是不够用的，建议分配150G虚拟内存，安装方式如下：
我这里首先安装了FreeCAD 0.20 安d装步骤如下，源码加相关包超过4G的内容：
系统：Ubuntu 20.04：
1.安装git ：sudo apt install git
2.下载源码：git clone https://github.com/FreeCAD/FreeCAD.git freecad-source
3.安装以下安装包：
sudo apt install cmake cmake-gui libboost-date-time-dev libboost-dev libboost-filesystem-dev libboost-graph-dev libboost-iostreams-dev libboost-program-options-dev libboost-python-dev libboost-regex-dev libboost-serialization-dev libboost-thread-dev libcoin-dev libeigen3-dev libgts-bin libgts-dev libkdtree++-dev libmedc-dev libocct-data-exchange-dev libocct-ocaf-dev libocct-visualization-dev libopencv-dev libproj-dev libpyside2-dev libqt5opengl5-dev libqt5svg5-dev libqt5webkit5-dev libqt5x11extras5-dev libqt5xmlpatterns5-dev libshiboken2-dev libspnav-dev libvtk7-dev libx11-dev libxerces-c-dev libzipios++-dev occt-draw pyside2-tools python3-dev python3-matplotlib python3-pivy python3-ply python3-pyside2.qtcore python3-pyside2.qtgui python3-pyside2.qtsvg python3-pyside2.qtwidgets python3-pyside2.qtnetwork python3-pyside2.qtwebengine python3-pyside2.qtwebenginecore python3-pyside2.qtwebenginewidgets python3-pyside2.qtwebchannel python3-markdown python3-git python3-pyside2uic qtbase5-dev qttools5-dev swig
4.在上述安装包安装的过程中会有部分安装包会出错
libvtk7-dev安装不成以libvtk6-dev替换
python3-pyside2uic安装失败解决方式在以下网站，针对相关问题进行解决
ubuntu and python3-pyside2uic - FreeCAD Forum (freecadweb.org)
5. mkdir freecad-build
6. cd freecad-build
7. cmake ../freecad-source
8. make -j$(nproc --ignore=2)
会出现VTK相关库报错问题解决方式，安装VTK的库，以下提供VTK7.1.1版本的安装方式：
官方下载地址 https://www.vtk.org/download/
安装依赖
sudo apt-get install -y build-essential libgl1-mesa-dev libglew-dev libsdl2-dev libsdl2-image-dev libglm-dev libfreetype6-dev libglfw3-dev libglfw3
1.tar -zxvf VTK-7.1.1.rc2.tar.gz
2.mkdir vtk-build&& cd vtk-build
3.cmake-gui
4. 第一个是源码位置
第二个是刚刚建的目录
然后点configure
其他详细安装vtk以及本次安装教程查看百度网盘，博客园粘贴图像太费事了：
链接：https://pan.baidu.com/s/1W1V9M6rZet8rRmMOH3WDag?pwd=tclg
提取码：tclg
Geant4安装
sudo apt update
sudo apt upgrade
安装编译套件、vim、axel（多线程下载工具）
sudo apt install build-essential vim axel
安装Cmake
sudo apt-get install cmake
安装Qtcreator
sudo apt install qtcreator qtcreator-data qtcreator-doc
安装其他库、插件
sudo apt install libgl1-mesa-dev libglu1-mesa-dev mesa-common-dev libfontconfig1 libxt-dev libxmu-dev libxi-dev zlib1g-dev libgl2ps-dev libexpat1-dev libtbb-dev libxerces-c-dev qt5-default libmotif-dev libtbb-dev libtinfo5
下载新的G4版本与对应的库文件
下载并安装CLHEP库
tar -xvf clhep-2.4.1.3.tgz
#将解压出来的2.4.1.3 2.4.1.3 命名成CLHEP，并移动到work目录下
mkdir CLHEP-2.4.1.3-build
mkdir CLHEP-2.4.1.3-install
cd CLHEP-2.4.1.3-build
cmake -DCMAKE_INSTALL_PREFIX=/home/g4/work/CLHEP-2.4.1.3-install /home/g4/work/CLHEP-2.4.1.3
make -j4 #编译
make install
安装G4,添加G4相关库功能
tar -xvf geant4.10.06.p02.tar.gz
mkdir geant4.10.06.p02-build
mkdir geant4.10.06.p02-install
cd geant4.10.06.p02-build
cmake -DCMAKE_INSTALL_PREFIX=/home/g4/work/geant4.10.06.p02-install -DGEANT4_USE_OPENGL_X11=ON -DGEANT4_BUILD_MULTITHREADED=ON -DGEANT4_USE_RAYTRACER_X11=ON -DGEANT4_USE_GDML=ON -DGEANT4_USE_XM=ON -DGEANT4_USE_SYSTEM_CLHEP=ON -DGEANT4_USE_QT=ON -DCLHEP_ROOT_DIR=/home/g4/work/CLHEP-2.4.1.3-install -DCLHEP_INCLUDE_DIR=/home/g4/work/CLHEP-2.4.1.3-install/include -DCLHEP_LIBRARY=/home/g4/work/CLHEP-2.4.1.3-install/lib /home/g4/work/geant4.10.06.p02
make -j4 #编译 -前面有空格
make install
需要新建data文件夹，将数据文件放在/home/g4/work/geant4.10.06.p02-install/share/Geant4-10.6.2/data
ls *.tar.gz | xargs -n1 tar xvf
/home/g4/work/geant4.10.06.p02-install/share/Geant4-10.6.2/data
添加geant4的环境变量
vim ~/.bashrc
source /home/g4/work/geant4.10.06.p02-install/share/Geant4-10.6.2/geant4make/geant4make.sh
:q #退出来
source ~/.bashrc
安装root
下载root的编译好的包
解压安装包
vim ~/.bashrc
source /home/g4/work/root/bin/thisroot.sh
:wq #退出来
source ~/.bashrc
