Introduction to XCB Utilities
The XCB utilities provide extensions that developers can use when
making X Window software. xcb-util-0.4.1 was just installed but
these utilities offer even more extensions that X Window software
may depend on.
![[Note]](../images/note.png)
Note
Development versions of BLFS may not build or run some packages
properly if LFS or dependencies have been updated since the most
recent stable versions of the books.
Package Information
-
Download (HTTP): https://xcb.freedesktop.org/dist/
-
Download size: 1.1 MB
-
Estimated disk space required: 13.3 MB
-
Estimated build time: 0.1 SBU (ignoring the time to download)
XCB Utilities Dependencies
Required
libxcb-1.17.0 and xcb-util-0.4.1
Downloading XCB Utilities
First, create a list of files to be downloaded. This file will also
be used to verify the integrity of the downloads when complete:
cat > xcb-utils.md5 << "EOF"
a67bfac2eff696170259ef1f5ce1b611 xcb-util-image-0.4.1.tar.xz
fbdc05f86f72f287ed71b162f1a9725a xcb-util-keysyms-0.4.1.tar.xz
193b890e2a89a53c31e2ece3afcbd55f xcb-util-renderutil-0.3.10.tar.xz
581b3a092e3c0c1b4de6416d90b969c3 xcb-util-wm-0.4.2.tar.xz
bc30cd267b11ac5803fe19929cabd230 xcb-util-cursor-0.1.5.tar.xz
EOF
To download the needed files using Wget-1.25.0, use
the following commands:
mkdir xcb-utils &&
cd xcb-utils &&
grep -v '^#' ../xcb-utils.md5 | awk '{print $2}' | wget -i- -c \
-B https://xcb.freedesktop.org/dist/ &&
md5sum -c ../xcb-utils.md5
Installation of XCB Utilities
Note
When installing multiple packages in a script, the installation
needs to be done as the root user. There are three general
options that can be used to do this:
-
Run the entire script as the root user (not recommended).
-
Use the sudo
command from the Sudo-1.9.16p2 package.
-
Use su -c "command
arguments" (quotes required) which will ask
for the root password for every iteration of the loop.
One way to handle this situation is to create a short
bash function that
automatically selects the appropriate method. Once the command is
set in the environment, it does not need to be set again.
as_root()
{
if [ $EUID = 0 ]; then $*
elif [ -x /usr/bin/sudo ]; then sudo $*
else su -c \\"$*\\"
fi
}
export -f as_root
First, start a subshell that will exit on error:
bash -e
Install all of the packages by running the following commands:
for package in $(grep -v '^#' ../xcb-utils.md5 | awk '{print $2}')
do
packagedir=${package%.tar.?z*}
tar -xf $package
pushd $packagedir
./configure $XORG_CONFIG
make
as_root make install
popd
rm -rf $packagedir
done
Finally, exit the shell that was started earlier:
exit