5b02e6cad8
Signed-off-by: Samuel Martin <s.martin49@gmail.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
48 lines
1.4 KiB
Plaintext
48 lines
1.4 KiB
Plaintext
// -*- mode:doc; -*-
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// vim: set syntax=asciidoc:
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[[toolchain-custom]]
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Customizing the toolchain
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~~~~~~~~~~~~~~~~~~~~~~~~~
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There are three distinct types of toolchain backend supported in Buildroot,
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available under the menu +Toolchain+, invoking +make menuconfig+.
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Using the external toolchain backend
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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There is no way of tuning an external toolchain since Buildroot does not
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generate it.
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It also requires to set the Buildroot settings according to the toolchain ones
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(see xref:external-toolchain-backend[]).
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Using the internal Buildroot toolchain backend
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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The internal Buildroot toolchain backend *only* allows to generate
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*http://www.uclibc.org/[uClibc]-based toolchains*.
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However, it allows to tune major settings, such as:
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* Linux headers version;
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* http://www.uclibc.org/[uClibc] configuration (see xref:uclibc-custom[uClibc]);
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* Binutils, GCC, Gdb and toolchain options.
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These settings are available after selecting the +Buildroot toolchain+ type in
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the menu +Toolchain+.
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Using the Crosstool-NG backend
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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The http://crosstool-ng.org[crosstool-NG] toolchain backend enables a rather
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limited set of settings under the Buildroot +Toolchain+ menu:
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* The http://crosstool-ng.org[crosstool-NG] configuration file
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* Gdb and some toolchain options
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Then, the toolchain can be fine-tuned by invoking +make ctng-menuconfig+.
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