Achilinux Native Compiling

This repository contains a script and a couple of tips for compiling native packages.

!!! Requirements before you use this script !!!

You need following packages

sudo pacman -S --needed pacman-contrib diffutils findutils mlocate sudo vim bs

Know your CPU architecture

You need to know your CPU architecture to get the advantages of compiling. You can find out by the following command.

gcc -Q -march=native --help=target | grep march | awk '{print $2}' | head -1

Your output can looks for example like this:

$ gcc -Q -march=native --help=target | grep march | awk '{print $2}' | head -1
tigerlake

Adjust your config file

You know the CPU architecture of your computer, let's adjust the file in etc/makepkg.conf, find out section with CFLAGS=, you can see that section below:

#-- Compiler and Linker Flags
#CPPFLAGS=""
CFLAGS="-march=x86-64 -mtune=generic -O2 -pipe -fno-plt -fexceptions \
        -Wp,-D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security \
        -fstack-clash-protection -fcf-protection"

You need to remove -mtune=generic and add your CPU architecture, in my case it's tigerlake in your case, you need add output from the terminal on your computer. My config file for tigerlake CPU looks like this:

#-- Compiler and Linker Flags
#CPPFLAGS=""
CFLAGS="-march=tigerlake -O2 -pipe -fno-plt -fexceptions \
        -Wp,-D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security \
        -fstack-clash-protection -fcf-protection"

You can also use the native flag, which will automatically detect all flags compatible with your architecture. Use this solution when the result from the previous one is ambiguous or you suspect that the information may be wrong.

#-- Compiler and Linker Flags
#CPPFLAGS=""
CFLAGS="-march=native -O2 -pipe -fno-plt -fexceptions \
        -Wp,-D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security \
        -fstack-clash-protection -fcf-protection"

!!! Remember not to share packages compiled in this way, as they are unlikely to work for other users !!!

Dependencies

Script depends on two packages, impossible to run correctly without the following packages.

• bc https://archlinux.org/packages/extra/x86_64/bc/
• paru https://aur.archlinux.org/packages/paru
• If you are more familiar with yay don't worry, you can use both yay or paru, the choice depends on your decision.