#### Beyond Linux® From Scratch (systemd Edition) - Version r12.0-1685

### Chapter 9. General Libraries

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# libunwind-1.6.2

## Introduction to libunwind

The libunwind package contains a portable and efficient C programming interface (API) to determine the call-chain of a program. The API additionally provides the means to manipulate the preserved (callee-saved) state of each call-frame and to resume execution at any point in the call-chain (non-local goto). The API supports both local (same-process) and remote (across-process) operation.

This package is known to build and work properly using an LFS 12.1 platform.

### Package Information

- Download (HTTP): https://download.savannah.nongnu.org/releases/libunwind/libunwind-1.6.2.tar.gz

- Download MD5 sum: f625b6a98ac1976116c71708a73dc44a

- Download size: 884 KB

- Estimated disk space required: 20 MB (with tests)

- Estimated build time: 0.2 SBU (with tests)

### libunwind Dependencies

#### Optional

texlive-20230313 (for latex2man)

## Installation of libunwind

Install libunwind by running the following commands:

    ./configure --prefix=/usr --disable-static &&
    make

To test the results, issue: make check. Two tests, run-coredump-unwind and run-coredump-unwind-mdi are known to fail.

Now, as the `root` user:

    make install

## Command Explanations

`--disable-static`: This switch prevents installation of static versions of the libraries.

## Contents

Installed Programs: None
Installed Libraries: libunwind.so, libunwind-coredump.so, libunwind-generic.so, libunwind-ptrace.so, libunwind-setjmp.so, and libunwind-x86_64.so (libunwind-x86.so on i686)
Installed Directories: None

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