Makefile

   1 # Makefile - POSIX Makefile for TopGit
   2 # Copyright (C) 2017 Kyle J. McKay
   3 # All rights reserved
   4 # License GPL2
   5
   6 #
   7 ## THIS IS NOT THE MAKEFILE YOU ARE LOOKING FOR!
   8 ##
   9 ## You likely want Makefile.mak (docs are in there)
  10 ##
  11 ## NOTE: Makefile.sh feeds variables into Makefile.mak
  12 ##       You might want to look there too
  13 ##
  14 ## Makefile drives the process
  15 ## Makefile.sh provides POSIX sh support
  16 ## Makefile.mak does the actual building
  17 ## Makefile.mt always exists and is always empty (i.e. zero length)
  18 #
  19
  20 .POSIX:
  21
  22 # Anything explicitly listed here will always avoid a bogus "up to date" result
  23 TARGETS = \
  24         all clean tg awk hooks helpers doc html \
  25         precheck TG-BUILD-SETTINGS settings \
  26         install install-doc install-html \
  27         tg--awksome tg-tg.txt topgit.html \
  28         shell_compatibility_test \
  29         bin-wrappers/tg bin-wrapper/pre-commit \
  30         test \
  31 #TARGETS
  32
  33 __default_target__: __file_which_should_not_exist
  34         +@set -- && set -ae && MAKE="$(MAKE)" && . ./Makefile.sh && $(MAKE) $${GNO_PD_OPT} -e -f Makefile.mak
  35
  36 .DEFAULT:
  37         +@set -- "$@" && set -ae && MAKE="$(MAKE)" && . ./Makefile.sh && $(MAKE) $${GNO_PD_OPT} -e -f Makefile.mak "$$@"
  38
  39 target: __file_which_should_not_exist
  40         +@set -- $(TARGET) && set -ae && MAKE="$(MAKE)" && . ./Makefile.sh && $(MAKE) $${GNO_PD_OPT} -e -f Makefile.mak "$$@"
  41
  42 __any_target__ $(TARGETS): __file_which_should_not_exist
  43         +@set -- "$@" && set -ae && MAKE="$(MAKE)" && . ./Makefile.sh && $(MAKE) $${GNO_PD_OPT} -e -f Makefile.mak "$$@"
  44
  45 # Very important rule to avoid "accidents" caused by Makefile.sh's existence
  46 # Some ridiculous "make" implementations will always implicitly "make Makefile"
  47 # even though .POSIX: has been specified and that's definitely NOT POSIX!
  48 Makefile:
  49         @true
  50
  51 .PRECIOUS:
  52
  53 # Clean out the standard six single suffix inference rules
  54 # Except for .sh (because it would then elicit a redefiniton warning)
  55 .SUFFIXES:
  56 .SUFFIXES: .c .sh .f .c˜ .sh˜ .f˜
  57 .c:;
  58 .f:;
  59 #.sh:;
  60 .c~:;
  61 .f~:;
  62 .sh~:;
  63 .SUFFIXES:
  64 .SUFFIXES: .sh .awk .txt .html
  65
  66 # These are imperfect because they don't really reflect the correct dependencies
  67 # Running the default "make" or "make all" will always get it right, but when
  68 # trying to make a specific target, these will often avoid the "up to date"
  69 # output that would otherwise occur for existing files with no dependencies
  70 .sh:
  71         +@set -- "$@" && set -ae && MAKE="$(MAKE)" && . ./Makefile.sh && $(MAKE) $${GNO_PD_OPT} -e -f Makefile.mak "$$@"
  72 .awk:
  73         +@set -- "$@" && set -ae && MAKE="$(MAKE)" && . ./Makefile.sh && $(MAKE) $${GNO_PD_OPT} -e -f Makefile.mak "$$@"
  74 .sh.txt:
  75         +@set -- "$@" && set -ae && MAKE="$(MAKE)" && . ./Makefile.sh && $(MAKE) $${GNO_PD_OPT} -e -f Makefile.mak "$$@"
  76 .sh.html:
  77         +@set -- "$@" && set -ae && MAKE="$(MAKE)" && . ./Makefile.sh && $(MAKE) $${GNO_PD_OPT} -e -f Makefile.mak "$$@"
  78
  79 # This "phony" target must have at least one command otherwise it will not
  80 # actually run anything and so will not actually trigger the rules that depend
  81 # on it to run either.  By using "true" instead of ":" "makes" that
  82 # short-circuit directly to execvp should be able to run "true" directly.
  83 __file_which_should_not_exist:
  84         -@true