SWIG-4.0.0

#### Beyond Linux® From Scratch (systemd Edition) - Version 9.0

### Chapter 13. Programming

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# SWIG-4.0.0

## Introduction to SWIG

SWIG (Simplified Wrapper and Interface Generator) is a compiler that integrates C and C++ with languages including Perl, Python, Tcl, Ruby, PHP, Java, C#, D, Go, Lua, Octave, R, Scheme, and Ocaml. SWIG can also export its parse tree into Lisp s-expressions and XML.

SWIG reads annotated C/C++ header files and creates wrapper code (glue code) in order to make the corresponding C/C++ libraries available to the listed languages, or to extend C/C++ programs with a scripting language.

This package is known to build and work properly using an LFS-9.0 platform.

### Package Information

- Download (HTTP): https://downloads.sourceforge.net/swig/swig-4.0.0.tar.gz

- Download MD5 sum: 572074323f49d9cb14460d986f87230a

- Download size: 7.7 MB

- Estimated disk space required: 161 MB (1.3 GB with tests)

- Estimated build time: 0.2 SBU (add 14 SBU for tests; both using parallelism=4)

### SWIG Dependencies

#### Required

PCRE-8.43

#### Optional

Boost-1.70.0 for tests, and any of the languages mentioned in the introduction, as run-time dependencies

User Notes: http://wiki.linuxfromscratch.org/blfs/wiki/swig

## Installation of SWIG

Install SWIG by running the following commands:

    ./configure --prefix=/usr \
                --without-maximum-compile-warnings &&
    make

To test the results, issue: make -k check TCL_INCLUDE=. The unsetting of the variable `TCL_INCLUDE` is necessary since it is not correctly set by configure. The tests are only executed for the languages installed on your machine, so the disk space and SBU values given for the tests may vary, and should be considered as mere orders of magnitude. If you have Python-2.7.16 installed, the Python-3 tests are not run. You can run tests for Python-3 by issuing PY3=1 make check-python-examples followed by PY3=1 make check-python-test-suite. According to SWIG's documentation, the failure of some tests should not be considered harmful.

Now, as the `root` user:

    make install &&
    install -v -m755 -d /usr/share/doc/swig-4.0.0 &&
    cp -v -R Doc/* /usr/share/doc/swig-4.0.0

## Command Explanations

`--without-maximum-compile-warnings`: disables compiler ansi conformance enforcement, which triggers errors in the Lua headers (starting with Lua 5.3).

`--without-<language>`: allows disabling the building of tests and examples for <language>, but all the languages capabilities of SWIG are always built.

## Contents

Installed Programs: swig and ccache-swig
Installed Library: None
Installed Directories: /usr/share/doc/swig-4.0.0 and /usr/share/swig

### Short Descriptions

swig | takes an interface file containing C/C++ declarations and SWIG special instructions, and generates the corresponding wrapper code needed to build extension modules.
ccache-swig | is a compiler cache, which speeds up re-compilation of C/C++/SWIG code.

Last updated on 2019-08-17 15:16:30 -0700

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