." crosstool-NG man page

." Copyright 2007 Yann E. MORIN

." Licensed under the Creative Commons BY-SA, v2.5

."

." Beautifying URLs

.mso www.tmac

."

.TH crosstool-NG 1 "@@CT_DATE@@" "version @@CT_VERSION@@" "User Commands"

."

."

.SH NAME

ct-ng, crosstool-NG \- Build cross-toolchains

."

."

.SH SYNOPSIS

.B ct-ng ACTION

."

."

.SH DESCRIPTION

Building a cross-toolchain can be a real pain.

.PP

.B crosstool-NG

makes it easy to build cross-toolchains, and allows you to take all the juice

out of your target by configuring the different components of the toolchain

accordingly to the targeted processor.

."

."

.SH ACTIONS

Here are the most commonly used actions. For other actions, please see

.I @@CT_DOCDIR@@/overview.txt

.TP

.B help

Prints a little help text.

."

.TP

.B menuconfig

Configures

.B crosstool-NG

using a configurator menu very similar to that of the Linux kernel.

."

.TP

.B oldconfig

Apply options found in an existing

.I .config

file, and ask for newer options if there are any.

."

.TP

.B saveconfig

Save the current

.B crosstool-NG

configuration, and associated components' config files, into a sample. Samples

are saved in their own sub-directory, named after the target's tuple, in the

.I samples

sub-directory of the current directory.

If that was not clear:

.I `pwd`/samples/${CT_TARGET}/

Samples can be later recalled by calling

.B ct-ng

with the target tuple they represent.

."

.TP

.B build

Builds the configured toolchain.

."

.TP

.B clean

Remove files generated by

.B crosstool-NG

for itself (these are mostly the configurators' binaries).

."

.TP

.B distclean

Same as

.B clean

, but also removes the toolchain build directory, the downloaded files and the

.I .config

configuration file. The generated toolchain is left untouched, as well as

samples which are not removed.

."

.TP

.B regtest

Calls the

.B crosstool-NG

regression test suite. All samples are build, and the regression test suite is

run against every one of them.

."

.TP

.B updatetools

Updates the

.I config.guess

and

.I config.sub

scripts. These scripts are used by

.B crosstool-NG

to canonicalise the machines' name (host, build and target machines).

.TP

.B tarball

Builds a tarball of the generated toolchain, also saving the scripts from

.B crosstool-NG

that are needed to rebuild the target, and also saving the tarballs of the

componnents that were used.

."

.SH ENVIRONMENT

.TP

.B STOP, START

Respectively stops and restarts the build just before this step. To restart a

step, a previous build should have run at least to that step, or further.

The list of steps is vailable with the action

.BR list-steps .

."

.SH EXIT VALUE

The

.B ct-ng

frontend is in fact a

.BR make (1)

script. See the man page for

.BR make (1)

to have the meaning of the exit values.

."

.SH BUGS

As of today (@@CT_DATE@@), building tarballs is broken. It is difficult to

foresee how every parts of

.B crosstool-NG

are going to be installed. Each parts is needed to build a tarball, as it

contains all that is needed to rebuild the toolchain from scratch: toolchain

components' sources,

.B crosstool-NG

configuration, but also all

.B crosstool-NG

scripts.

."

.SH SECURITY

.B Don't run as root!

Great care has been taken to avoid mistakes, but bug-free programs don't

exist. During normal operation,

.B crosstool-NG

removes entire directories. If you run as root, and there is a bug or you

mis-configured

.BR crosstool-NG ,

entire important directories could be removed (eg.

.IR /usr ),

although

.B crosstool-NG

will refuse to install toolchains in some well known critical directories.

."

.SH AUTHORS

Please consult the file

.I @@CT_DOCDIR@@/CREDITS

for a list of contributors.

."

.SH SEE ALSO

You can find more in-depth documentation in

.IR @@CT_DOCDIR@@/overview.txt .

Please have a look at the

.URL "http://www.kegel.com/crosstool" "original crosstool" " by Daniel KEGEL"