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Allow adding per-package override rsync exclusions

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This allows using <PKG>_SRCDIR_OVERRIDE_RSYNC_EXCLUSIONS in local.mk to
skip copying parts of source trees unneeded for building. For example,
when developing WebKitGTK+, it's handy to skip copying all the tests and
other build directories, which are huge:

    WEBKITGTK_OVERRIDE_SRCDIR = /home/aperez/WebKit
    WEBKITGTK_OVERRIDE_SRCDIR_RSYNC_EXCLUSIONS = \
        --exclude JSTests --exclude ManualTests \
	--exclude PerformanceTests --exclude WebDriverTests \
	--exclude WebKitBuild --exclude WebKitLibraries \
	--exclude WebKit.xcworkspace --exclude Websites \
	--exclude Examples

This saves a good chunk of time when rsync is used for the first time to
copy the source tree over before building.

Signed-off-by: Adrian Perez de Castro <aperez@igalia.com>
[Arnout: move documentation to the end of the section]
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
This commit is contained in:
Adrian Perez de Castro 2017-11-08 15:26:41 +02:00 committed by Arnout Vandecappelle (Essensium/Mind)
parent 888404d7fb
commit 94e80d78cf
2 changed files with 17 additions and 1 deletions
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16
docs/manual/using-buildroot-development.txt
View File

@ -81,3 +81,19 @@ make busybox-rebuild all
the root filesystem image in +output/images+ contains the updated
BusyBox.
Source trees for big projects often contain hundreds or thousands of
files which are not needed for building, but will slow down the process
of copying the sources with _rsync_. Optionally, it is possible define
+<pkg>_OVERRIDE_SRCDIR_RSYNC_EXCLUSIONS+ to skip syncing certain files
from the source tree. For example, when working on the +webkitgtk+
package, the following will exclude the tests and in-tree builds from
a local WebKit source tree:
------------------
WEBKITGTK_OVERRIDE_SRCDIR = /home/bob/WebKit
WEBKITGTK_OVERRIDE_SRCDIR_RSYNC_EXCLUSIONS = \
--exclude JSTests --exclude ManualTests --exclude PerformanceTests \
--exclude WebDriverTests --exclude WebKitBuild --exclude WebKitLibraries \
--exclude WebKit.xcworkspace --exclude Websites --exclude Examples
------------------

2
package/pkg-generic.mk
View File

@ -168,7 +168,7 @@ $(BUILD_DIR)/%/.stamp_rsynced:
@$(call MESSAGE,"Syncing from source dir $(SRCDIR)")
$(foreach hook,$($(PKG)_PRE_RSYNC_HOOKS),$(call $(hook))$(sep))
@test -d $(SRCDIR) || (echo "ERROR: $(SRCDIR) does not exist" ; exit 1)
rsync -au --chmod=u=rwX,go=rX $(RSYNC_VCS_EXCLUSIONS) $(call qstrip,$(SRCDIR))/ $(@D)
rsync -au --chmod=u=rwX,go=rX $(RSYNC_VCS_EXCLUSIONS) $($(PKG)_OVERRIDE_SRCDIR_RSYNC_EXCLUSIONS) $(call qstrip,$(SRCDIR))/ $(@D)
$(foreach hook,$($(PKG)_POST_RSYNC_HOOKS),$(call $(hook))$(sep))
$(Q)touch $@