extlinux/Makefile

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