Search icon CANCEL
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
Linux System Programming Techniques

You're reading from   Linux System Programming Techniques Become a proficient Linux system programmer using expert recipes and techniques

Arrow left icon
Product type Paperback
Published in May 2021
Publisher Packt
ISBN-13 9781789951288
Length 432 pages
Edition 1st Edition
Tools
Arrow right icon
Author (1):
Arrow left icon
Jack-Benny Persson Jack-Benny Persson
Author Profile Icon Jack-Benny Persson
Jack-Benny Persson
Arrow right icon
View More author details
Toc

Table of Contents (14) Chapters Close

Preface 1. Chapter 1: Getting the Necessary Tools and Writing Our First Linux Programs 2. Chapter 2: Making Your Programs Easy to Script FREE CHAPTER 3. Chapter 3: Diving Deep into C in Linux 4. Chapter 4: Handling Errors in Your Programs 5. Chapter 5: Working with File I/O and Filesystem Operations 6. Chapter 6: Spawning Processes and Using Job Control 7. Chapter 7: Using systemd to Handle Your Daemons 8. Chapter 8: Creating Shared Libraries 9. Chapter 9: Terminal I/O and Changing Terminal Behavior 10. Chapter 10: Using Different Kinds of IPC 11. Chapter 11: Using Threads in Your Programs 12. Chapter 12: Debugging Your Programs 13. Other Books You May Enjoy

Using a static library

In this recipe, we'll use the static library created in the previous recipe in a program. Using a static library is a bit easier than using a dynamic library. We just add the static library (the archive file) to the list of files that will be compiled to a final binary.

Knowing how to use a static library will enable you to use other people's libraries and reuse your own code as static libraries.

Getting ready

For this recipe, you'll need both the convert.h file and the static library file, libconvert.a. You'll also need the GCC compiler.

How to do it…

Here, we will write a small program that uses our functions from the library we created in the previous recipe:

  1. Write the following code in a file and save it as temperature.c. Notice the syntax for including header files from the current directory.

The program takes two arguments: an option (either -f or -k for Fahrenheit or Kelvin) and a Celsius degree...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at €18.99/month. Cancel anytime