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build: fix extreme build system slowdown caused by SOURCE_DATE_EPOCH changes 

Adding inline shell invocations in per-target variables causes them to be
executed over and over again, which causes a significant slowdown.
Fix this by evaluating it only once per package directory

Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2020-09-05 11:19:11 +02:00
parent 920d975cab
commit 7716a43092
2 changed files with 4 additions and 2 deletions
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4
include/package-ipkg.mk
View File

@ -181,7 +181,7 @@ $$(call addfield,Depends,$$(Package/$(1)/DEPENDS)
)$$(call addfield,LicenseFiles,$(LICENSE_FILES)
)$$(call addfield,Section,$(SECTION)
)$$(call addfield,Require-User,$(USERID)
)$$(call addfield,SourceDateEpoch,$(shell $(TOPDIR)/scripts/get_source_date_epoch.sh $(SOURCE))
)$$(call addfield,SourceDateEpoch,$(PKG_SOURCE_DATE_EPOCH)
)$(if $(PKG_CPE_ID),CPE-ID: $(PKG_CPE_ID)
)$(if $(filter hold,$(PKG_FLAGS)),Status: unknown hold not-installed
)$(if $(filter essential,$(PKG_FLAGS)),Essential: yes
@ -193,7 +193,7 @@ $(_endef)
$$(IPKG_$(1)) : export CONTROL=$$(Package/$(1)/CONTROL)
$$(IPKG_$(1)) : export DESCRIPTION=$$(Package/$(1)/description)
$$(IPKG_$(1)) : export PATH=$$(TARGET_PATH_PKG)
$$(IPKG_$(1)) : export PKG_SOURCE_DATE_EPOCH=$(shell $(TOPDIR)/scripts/get_source_date_epoch.sh $(SOURCE))
$$(IPKG_$(1)) : export PKG_SOURCE_DATE_EPOCH:=$(PKG_SOURCE_DATE_EPOCH)
$(PKG_INFO_DIR)/$(1).provides $$(IPKG_$(1)): $(STAMP_BUILT) $(INCLUDE_DIR)/package-ipkg.mk
@rm -rf $$(IDIR_$(1)); \
$$(call remove_ipkg_files,$(1),$$(call opkg_package_files,$(call gen_ipkg_wildcard,$(1))))

2
include/package.mk
View File

@ -19,6 +19,8 @@ PKG_IREMAP ?= 1
MAKE_J:=$(if $(MAKE_JOBSERVER),$(MAKE_JOBSERVER) $(if $(filter 3.% 4.0 4.1,$(MAKE_VERSION)),-j))
PKG_SOURCE_DATE_EPOCH:=$(if $(DUMP),,$(shell $(TOPDIR)/scripts/get_source_date_epoch.sh $(CURDIR)))
ifeq ($(strip $(PKG_BUILD_PARALLEL)),0)
PKG_JOBS?=-j1
else