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# -*- coding: utf-8; mode: makefile-gmake -*-
make-help:
@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'
quiet_cmd_common_clean = CLEAN $@
cmd_common_clean = \
rm -rf tests/build ;\
find . -name '*.orig' -exec rm -f {} + ;\
find . -name '*.rej' -exec rm -f {} + ;\
find . -name '*~' -exec rm -f {} + ;\
find . -name '*.bak' -exec rm -f {} + ;\
FMT = cat
ifeq ($(shell which fmt >/dev/null 2>&1; echo $$?), 0)
FMT = fmt
endif
# MS-Windows
#
# For a minimal *make-environment*, I'am using the gnu-tools from:
#
# - GNU MCU Eclipse Windows Build Tools, which brings 'make', 'rm' etc.
# https://github.com/gnu-mcu-eclipse/windows-build-tools/releases
#
# - git for Windows, which brings 'find', 'grep' etc.
# https://git-scm.com/download/win
# normpath
#
# System-dependent normalization of the path name
#
# usage: $(call normpath,/path/to/file)
normpath = $1
ifeq ($(OS),Windows_NT)
normpath = $(subst /,\,$1)
endif
# stolen from linux/Makefile
#
ifeq ("$(origin V)", "command line")
KBUILD_VERBOSE = $(V)
endif
ifndef KBUILD_VERBOSE
KBUILD_VERBOSE = 0
endif
ifeq ($(KBUILD_VERBOSE),1)
quiet =
Q =
else
quiet=quiet_
Q = @
endif
# stolen from linux/scripts/Kbuild.include
#
# Convenient variables
comma := ,
quote := "
#" this comment is only for emacs highlighting
squote := '
#' this comment is only for emacs highlighting
empty :=
space := $(empty) $(empty)
space_escape := _-_SPACE_-_
# 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 ($(KBUILD_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))
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