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aria2 is a powerfull downloader that is capable of chunking and parallel retrieval. Due to li;itations in crosstool-NG retrieval facilities, it's not possible to take fully advantage of aria2. It might happen that, in the future, those limitations get lifted away, so we can take use features such as parallel downloading from more than one server at the same time. For now, it should still speed up downloads thanks to parallel downloading of chunks.
137 lines
4.5 KiB
Plaintext
137 lines
4.5 KiB
Plaintext
# Options specific to downloading packages
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comment "Downloading"
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config FORBID_DOWNLOAD
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bool
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prompt "Forbid downloads"
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default n
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help
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Normally, crosstool-NG will try to download missing tarballs (or
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checkout from CVS/SVN...).
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If you do not have network connectivity when you run crosstool-NG,
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and some files are missing, it can be a long time before crosstool-NG
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fails.
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Saying 'y' here will prevent crosstool-NG from downloading missing
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files, thus failing early so that you don't get stuck.
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if ! FORBID_DOWNLOAD
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config FORCE_DOWNLOAD
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bool
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prompt "Force downloads"
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default n
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help
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Force downloading tarballs, even if one already exists.
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Usefull if you suspect a tarball to be damaged.
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menuconfig USE_MIRROR
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bool
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prompt "Use LAN mirror"
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default n
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help
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If you have a machine on your LAN that mirrors some of the needed
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tarballs, you can say 'Y' here, and configure adequate values in
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the following options.
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Tarballs will be be preferably fetched from the LAN mirror, and if
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not found there, standard places will be searched for.
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Obviously, nothing prevents you from using a mirror that is in fact
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*not* on your LAN, for example on another subnet of your company's
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network, or a mirror on the Internet.
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if USE_MIRROR
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config PREFER_MIRROR
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bool
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prompt "Prefer the mirror"
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default n
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help
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Say 'Y' here if you prefer the LAN miror over the upstream sources.
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config MIRROR_BASE_URL
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string
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prompt "Base URL"
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default "http://ymorin.is-a-geek.org/mirrors/"
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help
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This is the base URL searched in for tarballs.
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I (Yann E. MORIN) have set up such a mirror to host snapshots of
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some components, when those snapshots are volatile on the upstream
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servers. The mirror is *slow*, because it is hosted behind an ADSL
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line. For the time being, I haven't set up bandwidth limitations,
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but should the mirror be abused, I will. Please avoid using my
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machine when you can... Also, no guarantee is made as to its
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availability. Use at your own risks.
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The mirror is available at:
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http://ymorin.is-a-geek.org/mirrors/
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config MIRROR_LS_R
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bool
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# prompt "Use ls-lR et al."
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depends on EXPERIMENTAL
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default n
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help
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If the tarball was not found at the above location, see if the server
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has a ls-lr.gz (or similar) file, and use that file to see if the
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tarball is listed somewhere in that file.
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Common file names looked for are:
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ls-lrRt.txt (used at ftp.gnu.org)
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find.txt (ditto)
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ls-lR
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endif # USE_MIRROR
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config CONNECT_TIMEOUT
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int
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prompt "Connection timeout"
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default 10
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help
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From the curl manual:
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Maximum time in seconds that you allow the connection to the server to take.
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The scenario is as follows;
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- some enterprise networks have firewalls that prohibit FTP traffic, while
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still allowing HTTP
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- most download sites have http:// equivalent for the ftp:// URL
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- after this number of seconds, it is considered that the connection could
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not be established, and the next URL in the list is tried, until we reach
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an URL that will go through the firewall, most probably an http:// URL.
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If you have a slow network, you'd better set this value higher than the default
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10s. If you know a firewall is blocking connections, but your network is globally
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fast, you can try to lower this value to jump more quickly to allowed URLs. YMMV.
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Note that this value applies equally to wget if you have that installed.
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config DOWNLOAD_MAX_CHUNKS
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int
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prompt "Maximum number of // chunks"
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default 5
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range 1 10
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help
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If you have aria2 installed, then it will be used to download files.
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Aria2 can split the download in chunks, and download those chunks in //
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which can be interesting to speed up the download.
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On the other hand, using many chunks, or even chunking in general, may
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be seen by some site admins as being kind of unfair, or even as a DoS.
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That's why the range of acceptable values is [1..10], and the default
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is 5 (aria2's default).
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config ONLY_DOWNLOAD
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bool
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prompt "Stop after downloading tarballs"
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default n
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help
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Only download the tarballs. Exit once it done.
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Usefull to pre-retrieve the tarballs before going off-line.
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endif # ! FORBID_DOWNLOAD
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