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