1, Install EPICS Base

1. Installation tools

① Open the terminal and enter root
② Install git, gcc, automake, autoconf, libtool, make and other tools

	 yum -y install git gcc automake autoconf libtool make

③ Install g + +, c++

	 yum whatprovides "* / g + +" (this command is to find out which installation package g + + is in)
	 yum – y install gcc-c + + - 4.4.7-23.el6.x86_ (the installation content should be the same as the query result of the previous command)

④ Install readLine devel

	 yum –y install readline-devel

2. Install Base

① Download Base installation package
Website: https://epics.anl.gov/download/base/index.php
Download base-7.0.3.tar.gz
② Create the EPICS directory, enter the directory, move the base installation package to the directory, and extract the installation package

	 mkdir /home/yangdl/Epics
	 cd /home/yangdl/Epics
	 cp –r /home/yangdl/Downloads/base-7.0.3.tar.gz .
	 tar –xzvf base-7.0.3.tar.gz

③ Establish soft links

	 ln –s base-7.0.3 base

④ View system architecture

	 /home/yangdl/Epics/base/startup/EpicsHostArch

Output: linux-x86 ʄ
⑤ Configure the config? Site file with vi editor

	 cd /home/yangdl/Epics/base/configure
	 vi CONFIG_SITE

Enter the INSERT mode (press i) and assign linux-x86-64 to the three variables,
Save and exit, (press Esc +:, enter wq! Return)
⑥ Configuring the environment for compiling Base packages

	vi /etc/profile

Add the following to the end of the / etc/profile file, save and exit

#Add content:
	export EPICS_BASE=/home/yangdl/Epics/base
	export EPICS_HOST_ARCH=linux-x86_64
	export PATH=${PATH}:${EPICS_BASE}/bin/${EPICS_HOST_ARCH}
	export EPICS_CA_ADDR_LIST=127.0.0.1:5064
	export EPICS_CA_AUTO_ADDR_LIST=no
	export NODE_EPICS_LIBCA=${EPICS_BASE}/lib/${EPICS_HOST_ARCH}/libca
 	export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:${EPICS_BASE}/lib/${EPICS_HOST_ARCH}

  	 source /etc/profile (run the command for the modified profile to take effect immediately)

⑦ Compile Base package

	cd ${EPICS_BASE}
	make	

⑧ Check whether the installation is successful

   makeBaseApp.pl	 

2, Create IOC

1. Create startup file

① Create a folder in the ${epics ﹣ base} / test / directory and enter the folder

	mkdir ${EPICS_BASE}/test/firstIoc
	cd ${EPICS_BASE}/test/firstIoc

② Create App directory

	makeBaseApp.pl –t example AppName
	ls  

View files and folders generated in the directory

③ Create the iocBoot directory

	makeBaseApp.pl –i –t example AppName
	ls

View files and folders generated in the directory

Compile 4.

	make

2. Start IOC

① Enter startup folder

	cd iocBoot/iocName
	ls  (Show: Makefile  README  st.cmd)

② Add execution permission to the ioc startup script st.cmd in this directory

	chmod +x ./st.cmd
	ls  (Show: Makefile  README  **st.cmd**)

③ Configure environment path

	make envPaths
	ls  (Show: envPaths  Makefile  README  st.cmd)

④ Start ioc

	./st.cmd

⑤ Using iocsh to operate records

	epics> dbl
	epics> dbpr root:ai1
	epics> dbpf root:ai1.VAL 1

Three, expand

Write the above installation process as a script EpicsBaseIocAuto.sh

Run sh EpicsBaseIocAuto.sh to install Base and IOC automatically. (picture from him for reference)

4, Install Extensions

1. Download the installation package

① Extensions:
https://epics.anl.gov/extensions/configure/index.php (extensionsTop_20120904.tar.gz)
② ALH:
https://epics.anl.gov/extensions/alh/index.php (alh1_2_35.tar.gz)
③ MEDM:
https://epics.anl.gov/extensions/medm/index.php (MEDM3_1_11.tar.gz)
④ EDM:
https://github.com/gnartohl/edm/releases (edm-1-12-105D.tar.gz)

2. Environment settings

① Unzip the Extensions to the / home / yangdl / pictures / directory

	cd /home/yangdl/Epics/
	cp –r /home/yangdl/Downloads/extensionsTop_20120904.tar.gz .
	tar -xzvf extensionsTop_20120904.tar.gz

② Extract ALH, MEDM and EDM to the directory / home / yangdl / pictures / extensions / SRC /

	cd src
	cp –r /home/yangdl/Downloads/*1*.tar.gz .
	tar –xzvf alh1_2_35.tar.gz
	tar –xzvf MEDM3_1_11.tar.gz
	tar –xzvf edm-1-12-105D.tar.gz

③ Create the etc folder in the extensions directory

	cd /home/yangdl/Epics/extensions
	mkdir etc

④ Edit the profile file and run it for immediate effect

	vi /etc/profile

Add the following to the end of the / etc/profile file, save and exit

#Add content:
	export EPICS_EXTENSIONS=/home/yangdl/Epics/extensions
	export PATH=${PATH}:${EPICS_EXTENSIONS}/bin/${EPICS_HOST_ARCH}
	export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:${EPICS_EXTENSIONS}/lib/${EPICS_HOST_ARCH}

	source /etc/profile

3. Install software tools

	yum –y install libX*
	yum –y install xorg-x11-xbitmaps
	yum –y install openmotif
	yum –y install openmotif-devel
	yum –y install giflib-devel
	yum –y install flex
	yum –y install byacc
	yum -y install *75dpi*

4. Installation of ALH, MEDM, EDM

① Install ALH

	cd ${EPICS_EXTENSIONS}/src/alh1_2_35
	make

#Check whether the installation is successful

	alh

② Install MEDM

	cd ${EPICS_EXTENSIONS}/src/medm_MEDM3_1_11
	make

#Check whether the installation is successful

	medm

③ Installing EDM
Step 1. Configure the compilation environment
#Enter the extensions/configure directory, and modify the epics? Base and epics? Extensions parameters in the RELEASE file

   cd ${EPICS_EXTENSIONS}/configure  
   vi RELEASE

#Add content:
	export EPICS_BASE=/home/yangdl/Epics/base
	export EPICS_EXTENSIONS=/home/yangdl/Epics/extensions

	make   # Make the modified parameters effective immediately

Step 2. Compile EDM

   mkdir –p ${EPICS_EXTENSIONS}/include/edm		 # In the extensions directory, create the edm folder
   cd ${EPICS_EXTENSIONS}/src  					 # Go to the extensions/src directory
   mv edm-1-12-105D edm   					   	# Rename edm folder
   cd edm 										  # Enter edm directory
   make  										 # Compile

Step 3. Generate configuration file

   cd ${EPICS_EXTENSIONS}/lib/${EPICS_HOST_ARCH}
   export EDMOBJECTS=$PWD
   export EDMPVOBJECTS=$PWD
   export EDM=${EPICS_EXTENSIONS}/bin/${EPICS_HOST_ARCH}/edm
   for pv in Epics Calc Log Loc;do $EDM -addpv $PWD/lib$pv.so;done
   for ff in lib*.so;do ${EDM} -add $PWD/$ff; done
   sed -i -e "s|$PWD|"'${EDMLIBS}|' edmObjects edmPvObjects
   rm edmObjects~ edmPvObjects~
   unset EDMOBJECTS EDMPVOBJECTS EDM
   install -d ${EPICS_EXTENSIONS}/etc
   mv edmObjects edmPvObjects ${EPICS_EXTENSIONS}/etc/

Step 4. Configure the running environment

#Edit profile file

   vi /etc/profile

#Add the following to the end of the / etc/profile file

Add content:
   export EDMOBJECTS=$EPICS_EXTENSIONS/etc
   export EDMPVOBJECTS=$EPICS_EXTENSIONS/etc
   export EDMFILES=$EPICS_EXTENSIONS/src/edm/edmMain
   export EDMHELPFILES=$EPICS_EXTENSIONS/src/edm/helpFiles
   export EDMLIBS=$EPICS_EXTENSIONS/lib/$EPICS_HOST_ARCH 
   xset fp+ /usr/share/X11/fonts/75dpi

#Make the modified profile file take effect immediately

   source /etc/profile

Step 5. Check whether the installation is successful

   edm