extlinux/Makefile

   1 TMPFILE = $(shell mktemp /tmp/gcc_ok.XXXXXX)
   2 CC      = gcc
   3
   4 gcc_ok   = $(shell tmpf=$(TMPFILE); if $(CC) $(1) ../dummy.c -o $$tmpf 2>/dev/null; \
   5                    then echo '$(1)'; else echo '$(2)'; fi; rm -f $$tmpf)
   6
   7 comma   := ,
   8 LDHASH  := $(call gcc_ok,-Wl$(comma)--hash-style=both,)
   9
  10 OPTFLAGS = -g -Os
  11 INCLUDES = -I. -I.. -I../libinstaller
  12 CFLAGS   = -W -Wall -Wno-sign-compare -D_FILE_OFFSET_BITS=64 $(OPTFLAGS) $(INCLUDES)
  13 LDFLAGS  = $(LDHASH) # -s
  14
  15 SRCS     = main.c \
  16            ../libinstaller/setadv.c \
  17            ../libinstaller/extlinux_bss_bin.c \
  18            ../libinstaller/extlinux_sys_bin.c
  19 OBJS     = $(patsubst %.c,%.o,$(notdir $(SRCS)))
  20
  21 .SUFFIXES: .c .o .i .s .S
  22
  23 VPATH = .:../libinstaller
  24
  25 all: installer
  26
  27 tidy dist:
  28         -rm -f *.o *.i *.s *.a .*.d
  29
  30 clean: tidy
  31         -rm -f extlinux
  32
  33 spotless: clean
  34         -rm -f *~
  35
  36 installer: extlinux
  37
  38 extlinux: $(OBJS)
  39         $(CC) $(LDFLAGS) -o $@ $^
  40
  41 %.o: %.c
  42         $(CC) -Wp,-MT,$@,-MMD,.$@.d $(CFLAGS) -c -o $@ $<
  43 %.i: %.c
  44         $(CC) $(CFLAGS) -E -o $@ $<
  45 %.s: %.c
  46         $(CC) $(CFLAGS) -S -o $@ $<
  47
  48 -include .*.d