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pkg-download: Make a shallow clone for git downloads

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When downloading from git, we clone the whole repository and then only
use the latest commit.  That's a lot of redundant stuff.  So instead,
make a shallow clone.  Unfortunately that's only possible when
downloading a branch or tag, so fall back to the old method if git gives
an error.

This speeds up the cloning of a linux git from more than 2 hours to
20 minutes on a 200KB/s link).

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Acked-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This commit is contained in:
Arnout Vandecappelle (Essensium/Mind) 2012-11-01 02:21:05 +01:00 committed by Peter Korsgaard
parent efc10eb6b8
commit 3dd4bcf1eb
1 changed files with 4 additions and 1 deletions
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5
package/pkg-download.mk
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@ -73,10 +73,13 @@ domainseparator=$(if $(1),$(1),/)
# "external dependencies" of a given build configuration.
################################################################################
# Try a shallow clone - but that only works if the version is a ref (tag or
# branch). Fall back on a full clone if it's a generic sha1.
define DOWNLOAD_GIT
test -e $(DL_DIR)/$($(PKG)_SOURCE) || \
(pushd $(DL_DIR) > /dev/null && \
$(GIT) clone --bare $($(PKG)_SITE) $($(PKG)_BASE_NAME) && \
($(GIT) clone --depth 1 -b $($(PKG)_DL_VERSION) --bare $($(PKG)_SITE) $($(PKG)_BASE_NAME) || \
$(GIT) clone --bare $($(PKG)_SITE) $($(PKG)_BASE_NAME)) && \
pushd $($(PKG)_BASE_NAME) > /dev/null && \
$(GIT) archive --format=tar --prefix=$($(PKG)_BASE_NAME)/ $($(PKG)_DL_VERSION) | \
gzip -c > $(DL_DIR)/$($(PKG)_SOURCE) && \