post.mk

   1 #
   2 # Make no subdirs by default
   3 #
   4 ifndef SUBDIRS
   5 SUBDIRS=
   6 endif
   7
   8 .PHONY: $(SUBDIRS) all clean rebuild help
   9
  10 all: $(SUBDIRS)
  11 clean: $(SUBDIRS)
  12 rebuild: $(SUBDIRS)
  13
  14 help:
  15         @echo "***      Available targets      ***"
  16         @echo ""
  17         @echo "help:    prints this help"
  18         @echo ""
  19         @echo "clean:   cleans current directory and all subdirectories"
  20         @echo ""
  21         @echo "all:     make current directory and all subdirectories"
  22         @echo ""
  23         @echo "rebuild: does clean and all"
  24         @echo ""
  25         @echo "The default silent output could be turned off by defining"
  26         @echo "'VERBOSE' shell variable as 'VERBOSE=1 make'"
  27         @echo ""
  28
  29 #
  30 # Determine mode (eg do not generate anything if not in compile mode
  31 #
  32 COMPILE=no
  33
  34 ifeq ($(MAKECMDGOALS),all)
  35 COMPILE=yes
  36 endif
  37
  38 ifeq ($(MAKECMDGOALS),)
  39 COMPILE=yes
  40 endif
  41
  42 ifeq ($(MAKECMDGOALS),rebuild)
  43 COMPILE=yes
  44 endif
  45
  46 #
  47 # 1. Generate and include dependencies for all C sources
  48 # 2. Generate OBJECTS list from CSOURCES list
  49 # 3. Adds OBJECTS to CLEAN list
  50 #
  51 ifdef CSOURCES
  52 DEPFILES=$(subst .c,.dep,$(CSOURCES))
  53 ifeq ($(COMPILE),yes)
  54 -include $(DEPFILES)
  55 endif
  56 CLEAN+=$(subst .c,.dep,$(CSOURCES))
  57 OBJECTS+=$(CSOURCES:.c=.o)
  58 CLEAN+=$(OBJECTS)
  59 endif
  60
  61 #
  62 # Automatically include library headers
  63 #
  64 ifdef LIBNAME
  65 INCLUDE+=$(LIBNAME)
  66 endif
  67
  68 #
  69 # If there was anything in INCLUDE list, create CFLAGS for each entry
  70 #
  71 ifdef INCLUDE
  72 CFLAGS+=$(addprefix -I$(TOPDIR)/include/, $(INCLUDE))
  73 endif
  74
  75 #
  76 # Walk trought SUBDIRS, this code works even for -jX
  77 #
  78 $(SUBDIRS):
  79 ifdef VERBOSE
  80         $(MAKE) -C $@ $(MAKECMDGOALS)
  81 else
  82         @export CURSUBDIR="$$CURSUBDIR/$@" && echo "DIR $$CURSUBDIR" &&\
  83         $(MAKE) --no-print-directory -C $@ $(MAKECMDGOALS)
  84 endif
  85
  86 #
  87 # Actual make rules
  88 #
  89 $(DEPFILES): %.dep: %.c
  90 ifdef VERBOSE
  91         $(CC) -MM $(CFLAGS) $< -o $@
  92 else
  93         @echo "DEP -I(include $(INCLUDE)) $@"
  94         @$(CC) -MM $(CFLAGS) $< -o $@
  95 endif
  96
  97 $(OBJECTS): %.o: %.c
  98 ifdef VERBOSE
  99         $(CC) $(CFLAGS) -c $< -o $@
 100 else
 101         @echo "CC  -I(include $(INCLUDE)) $@"
 102         @$(CC) $(CFLAGS) -c $< -o $@
 103 endif
 104
 105 ifdef CLEAN
 106 clean:
 107 ifdef VERBOSE
 108         rm -f $(CLEAN)
 109 else
 110         @echo "RM  $(CLEAN)"
 111         @rm -f $(CLEAN)
 112 endif
 113 endif
 114
 115 compile: $(DEPFILES) $(OBJECTS) $(ALL)
 116
 117 rebuild: clean
 118         @$(MAKE) --no-print-directory all