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# -*- coding: utf-8; mode: makefile-gmake -*-
# SPDX-License-Identifier: AGPL-3.0-or-later
ifeq (,$(wildcard /.lxcenv.mk))
PHONY += lxc-activate lxc-purge
lxc-activate:
@$(MAKE) -s -f "$$(dirname $(abspath $(lastword $(MAKEFILE_LIST))))/makefile.lxc" lxc-activate
lxc-purge:
$(Q)rm -rf ./lxc-env
else
include /.lxcenv.mk
endif
PHONY += make-help
ifeq (,$(wildcard /.lxcenv.mk))
make-help:
else
make-help: lxc-help
endif
@echo 'options:'
@echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
@echo ' make V=2 [targets] 2 => give reason for rebuild of target'
ifeq ("$(origin V)", "command line")
VERBOSE = $(V)
endif
ifndef VERBOSE
VERBOSE = 0
endif
export VERBOSE
ifeq ($(VERBOSE),1)
quiet =
Q =
else
quiet=quiet_
Q = @
endif
# stolen from linux/scripts/Kbuild.include
#
# Convenient variables
squote := '
#' this comment is only for emacs highlighting
# Find any prerequisites that is newer than target or that does not exist.
# PHONY targets skipped in both cases.
any-prereq = $(filter-out $(PHONY),$?) $(filter-out $(PHONY) $(wildcard $^),$^)
#
###
# why - tell why a a target got build
# enabled by make V=2
# Output (listed in the order they are checked):
# (1) - due to target is PHONY
# (2) - due to target missing
# (3) - due to: file1.h file2.h
# (4) - due to command line change
# (5) - due to missing .cmd file
# (6) - due to target not in $(targets)
# (1) PHONY targets are always build
# (2) No target, so we better build it
# (3) Prerequisite is newer than target
# (4) The command line stored in the file named dir/.target.cmd
# differed from actual command line. This happens when compiler
# options changes
# (5) No dir/.target.cmd file (used to store command line)
# (6) No dir/.target.cmd file and target not listed in $(targets)
# This is a good hint that there is a bug in the kbuild file
ifeq ($(VERBOSE),2)
why = \
$(if $(filter $@, $(PHONY)),- due to target is PHONY, \
$(if $(wildcard $@), \
$(if $(strip $(any-prereq)),- due to: $(any-prereq), \
$(if $(arg-check), \
$(if $(cmd_$@),- due to command line change, \
$(if $(filter $@, $(targets)), \
- due to missing .cmd file, \
- due to $(notdir $@) not in $$(targets) \
) \
) \
) \
), \
- due to target missing \
) \
)
echo-why = $(call escsq, $(strip $(why)))
endif
#
###
# Escape single quote for use in echo statements
escsq = $(subst $(squote),'\$(squote)',$1)
#
# echo command.
# Short version is used, if $(quiet) equals `quiet_', otherwise full one.
echo-cmd = $(if $($(quiet)cmd_$(1)),echo '$(call escsq,$($(quiet)cmd_$(1)))$(echo-why)';)
#
# printing commands
cmd = @$(echo-cmd) $(cmd_$(1))
.PHONY: $(PHONY)
|
