To make this easier, buildman can automatically download and install
toolchains from kernel.org. First list the available architectures:
-$ ./tools/buildman/buildman sandbox --fetch-arch list
+$ ./tools/buildman/buildman --fetch-arch list
Checking: https://www.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.6.3/
Checking: https://www.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.6.2/
Checking: https://www.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.5.1/
Then pick one and download it:
-$ ./tools/buildman/buildman sandbox --fetch-arch or32
+$ ./tools/buildman/buildman --fetch-arch or32
Checking: https://www.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.6.3/
Checking: https://www.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.6.2/
Checking: https://www.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.5.1/