Book Image

Boost C++ Application Development Cookbook - Second Edition

By : Anton Polukhin Alekseevic
Book Image

Boost C++ Application Development Cookbook - Second Edition

By: Anton Polukhin Alekseevic

Overview of this book

If you want to take advantage of the real power of Boost and C++ and avoid the confusion about which library to use in which situation, then this book is for you. Beginning with the basics of Boost C++, you will move on to learn how the Boost libraries simplify application development. You will learn to convert data such as string to numbers, numbers to string, numbers to numbers and more. Managing resources will become a piece of cake. You’ll see what kind of work can be done at compile time and what Boost containers can do. You will learn everything for the development of high quality fast and portable applications. Write a program once and then you can use it on Linux, Windows, MacOS, Android operating systems. From manipulating images to graphs, directories, timers, files, networking – everyone will find an interesting topic. Be sure that knowledge from this book won’t get outdated, as more and more Boost libraries become part of the C++ Standard.
Table of Contents (19 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Detecting an OS and compiler


I'm guessing you've seen a bunch of ugly macros to detect the compiler on which the code is compiled. Something like this is a typical practice in C word:

#include <something_that_defines_macros>
#if !defined(__clang__) \
    && !defined(__ICC) \
    && !defined(__INTEL_COMPILER) \
    && (defined(__GNUC__) || defined(__GNUG__))

// GCC specific

#endif

Now, try to come up with a good macro to detect the GCC compiler. Try to make that macro usage as short as possible.

Take a look at the following recipe to verify your guess.

Getting ready

Only basic knowledge of C++ is required.

How to do it...

The recipe is simple and consists of a single a header and a single macro.

  1. The header:
#include <boost/predef/compiler.h>
  1. The macro:
#if BOOST_COMP_GNUC

// GCC specific

#endif

How it works...

The header <boost/predef/compiler.h> knows all the possible compilers and has a macro for each of those. So if the current compiler is GCC, then macro...