GNUmakefile

   1 # Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
   2 # SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
   3
   4
   5 BASH        := bash
   6 SHELL       := /usr/bin/env
   7 .SHELLFLAGS := -S '$(BASH) -Eeuo pipefail -c'
   8
   9
  10 MAKEFLAGS += --no-builtin-rules
  11 MAKEFLAGS += --no-builtin-variables
  12 MAKEFLAGS += --warn-undefined-variables
  13
  14
  15 srcdir      := .
  16 MAKEFILEDIR := $(CURDIR)/share/mk
  17
  18
  19 INFO_ :=
  20
  21
  22 .PHONY: all
  23 all: build;
  24
  25
  26 .SECONDEXPANSION:
  27
  28
  29 MK_ := $(wildcard $(addprefix $(MAKEFILEDIR)/, *.mk */*.mk */*/*.mk */*/*/*.mk))
  30 MK  := $(CURDIR)/GNUmakefile $(MK_)
  31 include $(MK_)
  32 $(MK):: ;
  33
  34
  35 .PHONY: nothing
  36 nothing:;
  37
  38
  39 .PHONY: help
  40 help:
  41         $(info  $(INFO_)To see a list of targets, run:)
  42         $(info  $(INFO_)        $$ make nothing -p \)
  43         $(info  $(INFO_)        | grep '^\.PHONY:' \)
  44         $(info  $(INFO_)        | tr ' ' '\n' \)
  45         $(info  $(INFO_)        | grep -v '^\.PHONY:' \)
  46         $(info  $(INFO_)        | sort;)
  47         $(info  )
  48         $(info  $(INFO_)To see a list of variables, run:)
  49         $(info  $(INFO_)        $$ find GNUmakefile share/mk/configure -type f \)
  50         $(info  $(INFO_)        | sort \)
  51         $(info  $(INFO_)        | xargs grep '^[^[:space:]].*=' \)
  52         $(info  $(INFO_)        | sed 's/=.*/=/' \)
  53         $(info  $(INFO_)        | grep -v -e ':DEFAULT_.*=' -e ':MAKEFILE_.*INCLUDED :=';)
  54         $(info  )
  55         $(info  $(INFO_)To see a list of dependencies (package/program), run:)
  56         $(info  $(INFO_)        $$ find share/mk/configure/build-depends -type f \)
  57         $(info  $(INFO_)        | sed 's,share/mk/configure/build-depends/,,' \)
  58         $(info  $(INFO_)        | sed 's,\.mk,,' \)
  59         $(info  $(INFO_)        | sort;)
  60         $(info  )
  61
  62
  63 .DELETE_ON_ERROR:
  64 .SILENT:
  65 FORCE: