Summary
In this chapter, we've covered some of the more advanced constructs found in the configure.ac files for many projects. We started with the macros required to generate substitution variables. I refer to these as "advanced" macros because many of the higher-level Autoconf macros use AC_SUBST and AC_DEFINE internally, making them somewhat transparent to you. However, knowing about them helps you to understand how Autoconf works and also provides some of the background information necessary for helping you learn to write your own macros.
We covered checks for compilers and other tools, as well as checks for non-ubiquitous data types and structures on your users' systems. The examples in this chapter were designed to help you to understand the ...
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