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diff --git a/docs/buildroot.html b/docs/buildroot.html index 3a7684d30..6226c1166 100644 --- a/docs/buildroot.html +++ b/docs/buildroot.html @@ -706,31 +706,48 @@ $(ZLIB_DIR)/libz.a: $(ZLIB_DIR)/.configured </ul> <p>Buildroot supports using existing toolchains through a - mechanism called <i>external toolchain</i>.</p> + mechanism called <i>external toolchain</i>. The external toolchain + mechanism is enabled in the <code>Toolchain</code> menu, by + selecting <code>External toolchain</code> in <code>Toolchain + type</code>.</p> - <p>To enable the use of an external toolchain, go to the - <code>Toolchain</code> menu, and :</p> + <p>Then, you have three solutions to use an external + toolchain:</p> <ul> - <li>Select the <code>External binary toolchain</code> toolchain - type</li> - <li>Select the appropriate <code>External toolchain C - library</code></li> - <li>Select the appropriate values for <code>Enable large - file</code>, <code>Enable IPv6</code>, <code>Enable - RPC</code>, <code>Enable toolchain - locale/i18n</code>, <code>Enable WCHAR</code>, <code>Enable - program invocation</code>, <code>Build/install c++ compiler and - libstdc++</code>, according to the configuration of your - external toolchain. Buildroot will check those values at the - beginning of the compilation process and will tell you if you - used incorrect values.</li> - <li>Adjust the <code>External toolchain path</code> - appropriately. It should be set to a path where a bin/ directory - contains your cross-compiling tools</li> - <li>Adjust the <code>External toolchain prefix</code> so that the - prefix, suffixed with <code>-gcc</code> or <code>-ld</code> will - correspond to your cross-compiling tools</li> + + <li>Use a predefined external toolchain profile, and let + Buildroot download, extract and install the toolchain. Buildroot + already knows about a few CodeSourcery toolchains for ARM, + PowerPC, MIPS and SuperH. Just select the toolchain profile + in <code>Toolchain</code> through the available ones. This is + definitely the easiest solution.</li> + + <li>Use a predefined external toolchain profile, but instead of + having Buildroot download and extract the toolchain, you can + tell Buildroot where your toolchain is already installed on your + system. Just select the toolchain profile + in <code>Toolchain</code> through the available ones, + unselect <code>Download toolchain automatically</code>, and fill + the <code>Toolchain path</code> text entry with the path to your + cross-compiling toolchain.</li> + + <li>Use a completely custom external toolchain. This is + particularly useful for toolchains generated using + Crosstool-NG. To do this, select the <code>Custom + toolchain</code> solution in the <code>Toolchain</code> + list. You need to fill the <code>Toolchain + path</code>, <code>Toolchain prefix</code> and <code>External + toolchain C library</code> options. Then, you have to tell + Buildroot what your external toolchain supports. If your + external toolchain uses the <i>glibc</i> library, you only have + to tell whether your toolchain supports C++ or not. If your + external toolchain uses the <i>uclibc</i> library, then you have + to tell Buildroot if it supports largefile, IPv6, RPC, + wide-char, locale, program invocation, threads and C++. At the + beginning of the execution, Buildroot will tell you if the + selected options do not match the toolchain configuration.</li> + </ul> <p>Our external toolchain support has been tested with toolchains |