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sstate: allow specifying indirect dependencies to exclude from sysroot

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Currently, a dependency on any -native recipe will pull in
all dependencies of that -native recipe in the recipe
sysroot. This behaviour might not always be wanted, e.g.
when that -native recipe depends on build-tools that are
not relevant for the current recipe.

This change adds a SSTATE_EXCLUDEDEPS_SYSROOT variable,
which will be evaluated for such recursive dependencies to
be excluded. The idea is similar to
   http://lists.openembedded.org/pipermail/openembedded-core/2018-January/146324.html
except that the list is not hard-coded anymore.

SSTATE_EXCLUDEDEPS_SYSROOT is evaluated as two regular
expressions of recipe and dependency to ignore, e.g. in
the above flex-native / bison-native use-case, one would
specify

    SSTATE_EXCLUDEDEPS_SYSROOT = ".*->(flex|bison)-native"

in layer.conf.

The existing special handling of "-initial" as well as
"base-passwd" and "shadow-sysroot" could also be
streamlined:

    SSTATE_EXCLUDEDEPS_SYSROOT += "\
        .*->.*-initial.* \
        .*(base-passwd|shadow-sysroot)->.* \
    "

Another anticipated user is meta-java, where certain newer
JDKs can only be bootstrapped (built) using older JDKs,
but it doesn't make much sense to copy all those older
JDKs and their own build tools (ant, etc.) into the
sysroot of recipes wanting to be built using the newer JDK
(only), e.g.:

    SSTATE_EXCLUDEDEPS_SYSROOT += "\
        openjdk-8-native->(ant-native|attr-native|coreutils-native|icedtea7-native|libxslt-native|make-native|openssl-native|zip-native|unzip-native) \
    "

(From OE-Core rev: 92c5131a2feae2036c71a36c18bb9175bb2856dc)

Signed-off-by: André Draszik <andre.draszik@jci.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
André Draszik
2018-05-22 13:25:50 +01:00
committed by Richard Purdie
parent 6870d10637
commit 7b7aa56548
1 changed files with 13 additions and 0 deletions
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13
meta/classes/sstate.bbclass
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@@ -920,6 +920,7 @@ def setscene_depvalid(task, taskdependees, notneeded, d, log=None):
# task is included in taskdependees too
# Return - False - We need this dependency
# - True - We can skip this dependency
import re
def logit(msg, log):
if log is not None:
@@ -980,6 +981,18 @@ def setscene_depvalid(task, taskdependees, notneeded, d, log=None):
# Nothing need depend on libc-initial/gcc-cross-initial
if "-initial" in taskdependees[task][0]:
continue
# Allow excluding certain recursive dependencies. If a recipe needs it should add a
# specific dependency itself, rather than relying on one of its dependees to pull
# them in.
# See also http://lists.openembedded.org/pipermail/openembedded-core/2018-January/146324.html
not_needed = False
for excl in (d.getVar('SSTATE_EXCLUDEDEPS_SYSROOT') or "").split():
if re.match(excl.split('->', 1)[0], taskdependees[dep][0]):
if re.match(excl.split('->', 1)[1], taskdependees[task][0]):
not_needed = True
break
if not_needed:
continue
# For meta-extsdk-toolchain we want all sysroot dependencies
if taskdependees[dep][0] == 'meta-extsdk-toolchain':
return False