sonic-buildimage/rules/functions
lguohan 7e282b89a2 [build]: wait for conflicts package to be uninstalled (#5039)
when parallel build is enabled, both docker-fpm-frr and docker-syncd-brcm
is built at the same time, docker-fpm-frr requires swss which requires to
install libsaivs-dev. docker-syncd-brcm requires syncd package which requires
to install libsaibcm-dev.

since libsaivs-dev and libsaibcm-dev install the sai header in the same
location, these two packages cannot be installed at the same time. Therefore,
we need to serialize the build between these two packages. Simply uninstall
the conflict package is not enough to solve this issue. The correct solution
is to have one package wait for another package to be uninstalled.

For example, if syncd is built first, then it will install libsaibcm-dev.
Meanwhile, if the swss build job starts and tries to install libsaivs-dev,
it will first try to query if libsaibcm-dev is installed or not. if it is
installed, then it will wait until libsaibcm-dev is uninstalled. After syncd
job is finished, it will uninstall libsaibcm-dev and swss build job will be
unblocked.

To solve this issue, _UNINSTALLS is introduced to uninstall a package that
is no longer needed and to allow blocked job to continue.

Signed-off-by: Guohan Lu <lguohan@gmail.com>
2021-01-20 23:06:13 -08:00

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###############################################################################
## FUNCTIONS
###############################################################################
###############################################################################
## Colored output
###############################################################################
# Enable colored output
ifeq ($(SONIC_CONFIG_ENABLE_COLORS),y)
ifeq ($(MAKE_TERMOUT),)
RED=\033[1;31m
PURPLE=\033[1;35m
CYAN=\033[1;36m
GREEN=\033[1;32m
GRAY=\033[0m
endif
endif
# Print red colored output
# call:
# log_red message
log_red = echo -e "$(RED)$(1)$(GRAY)"
# Print purple colored output
# call:
# log_purple message
log_purple = echo -e "$(PURPLE)$(1)$(GRAY)"
# Print blue colored output
# call:
# log_blue message
log_blue = echo -e "$(CYAN)$(1)$(GRAY)"
# Print green colored output
# call:
# log_green message
log_green = echo -e "$(GREEN)$(1)$(GRAY)"
###############################################################################
## Logging
###############################################################################
FLUSH_LOG = rm -f $@.log
LOG = &>> $(PROJECT_ROOT)/$@.log || { [ $$? -eq 0 ] || pushd $(PROJECT_ROOT) > /dev/null ; ./update_screen.sh -e $@ ; popd > /dev/null ; false ; }
###############################################################################
## Header and footer for each target
###############################################################################
# Dump targets taht current depends on
ifeq ($(SONIC_CONFIG_PRINT_DEPENDENCIES),y)
PRINT_DEPENDENCIES = echo Dependencies for $@ are $^ $(LOG)
endif
# header for each rule
define HEADER
@
$(PRINT_DEPENDENCIES)
$(FLUSH_LOG)
./update_screen.sh -a $@
endef
# footer for each rule
define FOOTER
./update_screen.sh -d $@
endef
###############################################################################
## Definition of derived target
###############################################################################
# call:
# add_derived_package some_deb.deb, some_derived_deb
define add_derived_package
$(2)_DEPENDS += $(1)
$(2)_RDEPENDS += $($(1)_RDEPENDS)
$(2)_MAIN_DEB = $(1)
$(1)_DERIVED_DEBS += $(2)
$(2)_URL = $($(1)_URL)
$(2)_SRC_PATH = $($(1)_SRC_PATH)
SONIC_DERIVED_DEBS += $(2)
endef
# call:
# add_extra_package some_deb.deb, some_extra_deb
define add_extra_package
$(2)_MAIN_DEB = $(1)
$(1)_EXTRA_DEBS += $(2)
SONIC_EXTRA_DEBS += $(2)
endef
###############################################################################
## Definition of conflict packages
###############################################################################
# call:
# add_conflict_package some_deb.deb, conflict_deb
define add_conflict_package
$(1)_CONFLICT_DEBS += $(2)
$(2)_CONFLICT_DEBS += $(1)
endef
###############################################################################
## Utility functions
###############################################################################
expand = $(foreach d,$(1),$(call expand,$($(d)_$(2)),$(2))) $(1)
###############################################################################
## Uninstall debs
###############################################################################
define UNINSTALL_DEBS
$(info $(1))
$(foreach deb,$(1), \
{ while true; do \
if mkdir $(DEBS_PATH)/dpkg_lock &> /dev/null; then \
{ sudo DEBIAN_FRONTEND=noninteractive dpkg -P $(firstword $(subst _, ,$(basename $(deb)))) $(LOG) && rm -d $(DEBS_PATH)/dpkg_lock && break; } || { rm -d $(DEBS_PATH)/dpkg_lock && exit 1 ; } \
fi; \
done; } )
endef