Autotools: A Practioner's Guide to GNU Autoconf, Automake, - download pdf or read online

By John Calcote

ISBN-10: 1593272065

ISBN-13: 9781593272067

The GNU Autotools make it effortless for builders to create software program that's transportable throughout many UNIX-like working structures. hundreds of thousands of open resource software program applications use the Autotools, however the studying curve is sadly steep, and it may be tricky for a newbie to discover something greater than uncomplicated reference fabric on utilizing the strong software program suite.

In Autotools, writer John Calcote starts with an summary of high-level thoughts; then tackles extra complex issues, like utilizing the M4 macro processor with Autoconf, extending the Automake framework, and development Java and C# sources.

You'll learn the way to:
• grasp the Autotools construct procedure to maximise your software's portability
• Generate Autoconf configuration scripts to simplify the compilation process
• Produce moveable makefiles with Automake
• construct cross-platform software program libraries with Libtool
• Write your individual Autoconf macros

Autotools additionally incorporates a number of entire tasks that you're inspired to paintings via to achieve a real-world feel of the way to develop into an Autotools practitioner. for instance, you'll flip the FLAIM and Jupiter projects' hand-coded, makefile-based construct structures right into a strong Autotools-based construct system.

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Extra resources for Autotools: A Practioner's Guide to GNU Autoconf, Automake, and Libtool

Sample text

To avoid long command lines and increase readability, you can wrap them using a backslash at the end of each line—usually after the semicolon. The wrapped portion of such commands may also be preceded by a TAB character. 9 Listing 2-5 shows a few simple examples of multiple commands that will be executed by the same shell. c Listing 2-5: Some examples of multiple commands executed by the same shell In the first example at , both lines are executed by the same shell because the backslash escapes the newline character between the lines.

O. c file. Ultimately, program depends on the three source files, but the object files are necessary as intermediate dependencies because there are two steps to the process—compile and link—with a result in between. For each rule, make uses an associated list of commands to build the rule’s target from its list of dependencies. Unix compilers are designed as higher-level tools than linkers. They have built-in, low-level knowledge about system-specific linker requirements. In the makefile in Listing 2-8, the ellipsis in the line at is a placeholder for a list of system-specific, low-level objects and libraries required to build all programs on this system.

In addition, Autoconf often catches semantic or logic errors that could otherwise take days to debug. Another benefit of Autoconf is that the shell code it generates is portable between most variations of the Bourne shell. Mistakes made in portability between shells are very common, and, unfortunately, are the most difficult kinds of mistakes to find, because no one developer has access to all Bourne-like shells. NOTE While scripting languages like Perl and Python are now more pervasive than the Bourne shell, this was not the case when the idea for Autoconf was first conceived.

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Autotools: A Practioner's Guide to GNU Autoconf, Automake, and Libtool by John Calcote

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