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mk: Prefer target libs coming from their host

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It looks like the target libs aren't actually the same across hosts so instead
of always packaging the target libs from CFG_BUILD take the target libs from the
host if we have them and then only failing that do we take them from CFG_BUILD.

Closes #29228
This commit is contained in:
Alex Crichton 2015-10-22 09:01:34 -07:00
parent ca998fc2f1
commit 0528effcd9
1 changed files with 19 additions and 1 deletions
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20
mk/dist.mk
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@ -256,7 +256,25 @@ endef
$(foreach host,$(CFG_HOST),\
$(eval $(call DEF_INSTALLER,$(host))))
$(foreach target,$(CFG_TARGET),\
# When generating packages for the standard library, we've actually got a lot of
# artifacts to choose from. Each of the CFG_HOST compilers will have a copy of
# the standard library for each CFG_TARGET, but we only want to generate one
# standard library package. As a result, for each entry in CFG_TARGET we need to
# pick a CFG_HOST to get the standard library from.
#
# In theory it doesn't actually matter what host we choose as it should be the
# case that all hosts produce the same set of libraries for a target (regardless
# of the host itself). Currently there is a bug in the compiler, however, which
# means this is not the case (see #29228 and #29235). To solve the first of
# those bugs, we prefer to select a standard library from the host it was
# generated from, allowing plugins to work in more situations.
#
# For all CFG_TARGET entries in CFG_HOST, however, we just pick CFG_BUILD as the
# host we slurp up a standard library from.
$(foreach host,$(CFG_HOST),\
$(eval $(call DEF_INSTALLER_TARGETS,$(host),$(host))))
$(foreach target,$(filter-out $(CFG_HOST),$(CFG_TARGET)),\
$(eval $(call DEF_INSTALLER_TARGETS,$(CFG_BUILD),$(target))))
ifdef CFG_WINDOWSY_$(CFG_BUILD)