How To Install unifdef on Fedora 34

unifdef is Tool for removing ifdef’d lines

Introduction

In this tutorial we learn how to install unifdef on Fedora 34.

What is `unifdef`

Unifdef is useful for removing ifdefed lines from a file while otherwise leaving the file alone. Unifdef acts on #ifdef, #ifndef, #else, and #endif lines, and it knows only enough about C and C++ to know when one of these is inactive because it is inside a comment, or a single or double quote.

We can use yum or dnf to install unifdef on Fedora 34. In this tutorial we discuss both methods but you only need to choose one of method to install unifdef.

Install unifdef on Fedora 34 Using dnf

Update yum database with dnf using the following command.

sudo dnf makecache --refresh

The output should look something like this:

Fedora 34 - x86_64                               20 kB/s | 6.6 kB     00:00
Fedora 34 openh264 (From Cisco) - x86_64        1.4 kB/s | 989  B     00:00
Fedora Modular 34 - x86_64                       68 kB/s | 6.5 kB     00:00
Fedora 34 - x86_64 - Updates                    3.5 kB/s | 6.2 kB     00:01
Fedora Modular 34 - x86_64 - Updates             17 kB/s | 5.9 kB     00:00
Metadata cache created.

After updating yum database, We can install unifdef using dnf by running the following command:

sudo dnf -y install unifdef

Install unifdef on Fedora 34 Using yum

Update yum database with yum using the following command.

sudo yum makecache --refresh

The output should look something like this:

Fedora 34 - x86_64                               20 kB/s | 6.6 kB     00:00
Fedora 34 openh264 (From Cisco) - x86_64        1.4 kB/s | 989  B     00:00
Fedora Modular 34 - x86_64                       68 kB/s | 6.5 kB     00:00
Fedora 34 - x86_64 - Updates                    3.5 kB/s | 6.2 kB     00:01
Fedora Modular 34 - x86_64 - Updates             17 kB/s | 5.9 kB     00:00
Metadata cache created.

After updating yum database, We can install unifdef using yum by running the following command:

sudo yum -y install unifdef

How To Uninstall unifdef on Fedora 34

To uninstall only the unifdef package we can use the following command:

sudo dnf remove unifdef

unifdef Package Contents on Fedora 34

/usr/bin/unifdef
/usr/bin/unifdefall.sh
/usr/lib/.build-id
/usr/lib/.build-id/00
/usr/lib/.build-id/00/8781ea3a8cc9edde2f0aa2fdfe246bf4b6b6a1
/usr/share/man/man1/unifdef.1.gz

References

unifdef website

Summary

In this tutorial we learn how to install unifdef on Fedora 34 using yum and dnf.