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Build Architecture Optimised Packages
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The apt-build
package, a front-end to apt-get,
provides a general solution to build Debian packages tuned (or
optimised) for your architecture.
$ wajig install apt-build
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You will be asked for some options, and these go into
/etc/apt/apt-build.conf:
build-dir = /var/cache/apt-build/build
repository-dir = /var/cache/apt-build/repository
Olevel = -O2
march = -march=pentium4
mcpu = -mcpu=pentium4
options = " "
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The built packages will be placed into
/var/cache/apt-build/repository, an can be accessed with the
standard Debian package tools by adding the following line to the top
of /etc/apt/sources.list (which can be done during the
installation of apt-build:
deb file:/var/cache/apt-build/repository apt-build main
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You will need deb-src entries in your
/etc/apt/sources.list file to be able to obtain the source
packages (see Section 6.7.1).
Being a front-end to apt-get, your first
apt-build command might be to update the list of known
available packages (particularly if you have just added a
deb-src entry to /etc/apt/sources.list), although
the following is equivalent:
You can then start building packages:
$ sudo apt-build install most
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You can manage a collection of packages to be recompiled and installed
instead of obtaining the default compiled versions. Create the file
/etc/apt/apt-build.list to contain a list of such packages
and then:
One way to get a full list of installed packages is:
# dpkg --get-selections | awk '{if ($2 == "install") print $1}' \
> /etc/apt/apt-build.list
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Be sure to edit the list to remove, for example, gcc! Then a:
will recompile and optimise all packages.
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