Chapter 1. Setting up a development workstation Red Hat Enterprise Linux 9 supports development of custom applications. To allow developers to do so, the system must be set up with the required tools and utilities. This chapter lists the most common use cases for development and the items to install. 1.1. Prerequisites The system must be installed, including a graphical environment, and subscribed. 1.2. Enabling debug and source repositories A standard installation of Red Hat Enterprise Linux does not enable the debug and source repositories. These repositories contain information needed to debug the system components and measure their performance. Procedure Enable the source and debug information package channels: The USD(uname -i) part is automatically replaced with a matching value for architecture of your system: Architecture name Value 64-bit Intel and AMD x86_64 64-bit ARM aarch64 IBM POWER ppc64le 64-bit IBM Z s390x 1.3. Setting up to manage application versions Effective version control is essential to all multi-developer projects. Red Hat Enterprise Linux is shipped with Git, a distributed version control system. Procedure Install the git package: Optional: Set the full name and email address associated with your Git commits: Replace Full Name and email@example.com with your actual name and email address. Optional: To change the default text editor started by Git, set value of the core.editor configuration option: Replace command with the command to be used to start the selected text editor. Additional resources Linux manual pages for Git and tutorials: Note that many Git commands have their own manual pages. As an example see git-commit(1) . Git User's Manual - HTML documentation for Git is located at /usr/share/doc/git/user-manual.html . Pro Git - The online version of the Pro Git book provides a detailed description of Git, its concepts, and its usage. Reference - Online version of the Linux manual pages for Git 1.4. Setting up to develop applications using C and C++ Red Hat Enterprise Linux includes tools for creating C and C++ applications. Prerequisites The debug and source repositories must be enabled. Procedure Install the Development Tools package group including GNU Compiler Collection (GCC), GNU Debugger (GDB), and other development tools: Install the LLVM-based toolchain including the clang compiler and lldb debugger: Optional: For Fortran dependencies, install the GNU Fortran compiler: 1.5. Setting up to debug applications Red Hat Enterprise Linux offers multiple debugging and instrumentation tools to analyze and troubleshoot internal application behavior. Prerequisites The debug and source repositories must be enabled. Procedure Install the tools useful for debugging: Install the dnf-utils package in order to use the debuginfo-install tool: Run a SystemTap helper script for setting up the environment. Note that stap-prep installs packages relevant to the currently running kernel, which might not be the same as the actually installed kernel(s). To ensure stap-prep installs the correct kernel-debuginfo and kernel-headers packages, double-check the current kernel version by using the uname -r command and reboot your system if necessary. Make sure SELinux policies allow the relevant applications to run not only normally, but in the debugging situations, too. For more information, see Using SELinux . 1.6. Setting up to measure performance of applications Red Hat Enterprise Linux includes several applications that can help a developer identify the causes of application performance loss. Prerequisites The debug and source repositories must be enabled. Procedure Install the tools for performance measurement: Run a SystemTap helper script for setting up the environment. Note that stap-prep installs packages relevant to the currently running kernel, which might not be the same as the actually installed kernel(s). To ensure stap-prep installs the correct kernel-debuginfo and kernel-headers packages, double-check the current kernel version by using the uname -r command and reboot your system if necessary. Enable and start the Performance Co-Pilot (PCP) collector service:

Commands:
subscription-manager repos --enable rhel-9-for-USD(uname -i)-baseos-debug-rpms subscription-manager repos --enable rhel-9-for-USD(uname -i)-baseos-source-rpms subscription-manager repos --enable rhel-9-for-USD(uname -i)-appstream-debug-rpms subscription-manager repos --enable rhel-9-for-USD(uname -i)-appstream-source-rpms
dnf install git
git config --global user.name " Full Name " git config --global user.email " email@example.com "
git config --global core.editor command
man git man gittutorial man gittutorial-2
dnf group install "Development Tools"
dnf install llvm-toolset
dnf install gcc-gfortran
dnf install gdb valgrind systemtap ltrace strace
dnf install dnf-utils
stap-prep
dnf install perf papi pcp-zeroconf valgrind strace sysstat systemtap
stap-prep
systemctl enable pmcd && systemctl start pmcd