Installing Basic Libraries

Installing GCC

1. Mount the OS image.

   1	mount YOUR_OS.iso /media -o loop

   

   Replace YOUR_OS.iso with the actual iso package name.

2. Back up the repo file and clear the /etc/yum.repos.d/ directory.

   1 2	cp -r /etc/yum.repos.d /etc/yum.repos.d-bak rm /etc/yum.repos.d/*

   

   Ensure that all repo files have been backed up. Enter y on the rm deletion page to delete the files.

3. Configure the local Yum source.
   1. Open the /etc/yum.repos.d/Local.repo file.

      1	vi /etc/yum.repos.d/Local.repo

   2. Press i to enter the insert mode and add the following content to the file:

      1 2 3 4 5

      [Local] name=Local baseurl=file:///media/ enabled=1 gpgcheck=0

   3. Press Esc, type :wq!, and press Enter to save the file and exit.
4. Make the Yum source configuration take effect.

   1 2	yum clean all yum makecache

5. Use the Yum source to install GCC-related software.

   1	yum -y install gcc.aarch64 gcc-c++.aarch64 gcc-gfortran.aarch64 libgcc.aarch64

Modifying GCC (to Solve the -fsigned-char Problem)

1. Search for the directory where GCC is located. Generally, the directory is /usr/bin/gcc.

   1	command -v gcc

2. Rename the original GCC file, for example, to gcc-impl.

   1	mv /usr/bin/gcc /usr/bin/gcc-impl

3. Configure the GCC file.
   1. Create a GCC file.

      1	vi /usr/bin/gcc

   2. Press i to enter the insert mode and add the following content to the file:

      1 2	#! /bin/sh /usr/bin/gcc-impl -fsigned-char "$@"

   3. Press Esc, type :wq!, and press Enter to save the file and exit.
4. Add the execute permission for the GCC file.

   1	chmod +x /usr/bin/gcc

5. Check whether the GCC is available.

   1	gcc --version

   • CentOS: The installation is successful if information similar to the following is displayed:

     

   • openEuler: The installation is successful if information similar to the following is displayed:

     

Modifying G++ (to Solve the -fsigned-char Problem)

1. Search for the directory where G++ is located. Generally, the directory is /usr/bin/g++.

   1	command -v g++

2. Change the original G++ file name, for example, to g++-impl.

   1	mv /usr/bin/g++ /usr/bin/g++-impl

3. Configure the G++ file.
   1. Create a G++ file.

      1	vi /usr/bin/g++

   2. Press i to enter the insert mode and add the following content to the file:

      1 2	#! /bin/sh /usr/bin/g++-impl -fsigned-char "$@"

   3. Press Esc, type :wq!, and press Enter to save the file and exit.
4. Add the execute permission for the G++ file.

   1	chmod +x /usr/bin/g++

5. Check whether G++ is available.

   1	g++ --version

   • CentOS: The installation is successful if information similar to the following is displayed:

     

   • openEuler: The installation is successful if information similar to the following is displayed:

     

Installing Dependencies

Use the Yum source to install dependencies.

yum install -y wget unzip vim