10.19. Readline-5.1

#### Cross-Compiled Linux From Scratch - Version 1.0.0rc1-PowerPC

### Chapter 10. Installing Basic System Software

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# 10.19. Readline-5.1

The Readline package is a set of libraries that offers command-line editing and history capabilities.

## 10.19.1. Installation of Readline

The following patch contains updates from the maintainer. The maintainer of Readline only releases these patches to fix serious issues.

    patch -Np1 -i ../readline-5.1-fixes-3.patch

Prepare Readline for compilation:

    ./configure --prefix=/usr --libdir=/lib

Compile the package:

    make SHLIB_XLDFLAGS=-lncurses

The meaning of the make option:

`SHLIB_XLDFLAGS=-lncurses`

  This option forces Readline to link against the `libncurses` library.

This package does not come with a test suite.

Install the package:

    make install

Give Readline's dynamic libraries more appropriate permissions:

    chmod -v 755 /lib/lib{readline,history}.so*

Now move the static libraries to a more appropriate location:

    mv -v /lib/lib{readline,history}.a /usr/lib

Next, remove the `.so` files in `/lib` and relink them into `/usr/lib`.

    rm -v /lib/lib{readline,history}.so
    ln -svf ../../lib/libreadline.so.5 /usr/lib/libreadline.so
    ln -svf ../../lib/libhistory.so.5 /usr/lib/libhistory.so

## 10.19.2. Contents of Readline

Installed libraries: libhistory.[a,so], and libreadline.[a,so]

### Short Descriptions

`libhistory` | Provides a consistent user interface for recalling lines of history
`libreadline` | Aids in the consistency of user interface across discrete programs that need to provide a command line interface

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