#### Linux From Scratch - Version 7.10

### Chapter 6. Installing Basic System Software

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# 6.21. Attr-2.4.47

The attr package contains utilities to administer the extended attributes on filesystem objects.

Approximate build time: less than 0.1 SBU
Required disk space: 3.3 MB

## 6.21.1. Installation of Attr

Modify the documentation directory so that it is a versioned directory:

    sed -i -e 's|/@pkg_name@|&-@pkg_version@|' include/builddefs.in

Prevent installation of manual pages that were already installed by the `man pages` package:

    sed -i -e "/SUBDIRS/s|man[25]||g" man/Makefile

Prepare Attr for compilation:

    ./configure --prefix=/usr \
                --bindir=/bin \
                --disable-static

Compile the package:

    make

The tests need to be run on a filesystem that supports extended attributes such as the ext2, ext3, or ext4 filesystems. The tests are also known to fail if running multiple simultaneous tests (-j option greater than 1). To test the results, issue:

    make -j1 tests root-tests

Install the package:

    make install install-dev install-lib
    chmod -v 755 /usr/lib/libattr.so

The shared library needs to be moved to `/lib`, and as a result the `.so` file in `/usr/lib` will need to be recreated:

    mv -v /usr/lib/libattr.so.* /lib
    ln -sfv ../../lib/$(readlink /usr/lib/libattr.so) /usr/lib/libattr.so

## 6.21.2. Contents of Attr

Installed programs: attr, getfattr, and setattr
Installed library: libattr.so
Installed directories: /usr/include/attr and /usr/share/doc/attr-2.4.47

### Short Descriptions

attr | Extends attributes on filesystem objects
getfattr | Gets the extended attributes of filesystem objects
setattr | Sets the extended attributes of filesystem objects
`libattr` | Contains the libbrary functions for manipulating extended attributes

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