mk/lib.mk

   1 # -*- makefile -*-
   2
   3 include $(MAKEDIR)/syslinux.mk
   4
   5 GCCOPT := $(call gcc_ok,-std=gnu99,)
   6 GCCOPT += $(call gcc_ok,-m32,)
   7 GCCOPT += $(call gcc_ok,-fno-stack-protector,)
   8 GCCOPT += $(call gcc_ok,-fwrapv,)
   9 GCCOPT += $(call gcc_ok,-freg-struct-return,)
  10 GCCOPT += $(call gcc_ok,-fPIE,-fPIC)
  11 GCCOPT += $(call gcc_ok,-fno-exceptions,)
  12 GCCOPT += $(call gcc_ok,-fno-asynchronous-unwind-tables,)
  13 GCCOPT += $(call gcc_ok,-fno-strict-aliasing,)
  14 GCCOPT += $(call gcc_ok,-falign-functions=0,-malign-functions=0)
  15 GCCOPT += $(call gcc_ok,-falign-jumps=0,-malign-jumps=0)
  16 GCCOPT += $(call gcc_ok,-falign-labels=0,-malign-labels=0)
  17 GCCOPT += $(call gcc_ok,-falign-loops=0,-malign-loops=0)
  18 GCCOPT += $(call gcc_ok,-mpreferred-stack-boundary=2,)
  19
  20 INCLUDE = -I.
  21 STRIP   = strip --strip-all -R .comment -R .note
  22
  23 # zlib and libpng configuration flags
  24 LIBFLAGS = -DDYNAMIC_CRC_TABLE -DPNG_NO_CONSOLE_IO \
  25            -DPNG_NO_WRITE_SUPPORTED \
  26            -DPNG_NO_MNG_FEATURES \
  27            -DPNG_NO_READ_tIME -DPNG_NO_WRITE_tIME
  28
  29 # We need some features in libpng which apparently aren't available in the
  30 # fixed-point versions.  It's OK, because we have to have a non-graphical
  31 # fallback anyway, just use that on old machines...
  32 # LIBFLAGS += -DPNG_NO_FLOATING_POINT_SUPPORTED
  33
  34 REQFLAGS  = $(GCCOPT) -g -mregparm=3 -DREGPARM=3 -D__COM32__ \
  35             -nostdinc -iwithprefix include -I. -I./sys -I../include \
  36             -I../../core/include
  37 OPTFLAGS  = -Os -march=i386 -falign-functions=0 -falign-jumps=0 \
  38             -falign-labels=0 -ffast-math -fomit-frame-pointer
  39 WARNFLAGS = $(GCCWARN) -Wpointer-arith -Wwrite-strings -Wstrict-prototypes -Winline
  40
  41 CFLAGS  = $(OPTFLAGS) $(REQFLAGS) $(WARNFLAGS) $(LIBFLAGS)
  42 LDFLAGS = -m elf_i386 --hash-style=gnu -T $(com32)/lib/elf32.ld
  43
  44 .SUFFIXES: .c .o .a .so .lo .i .S .s .ls .ss .lss
  45
  46 % : %.c # Cancel default rule
  47
  48 % : %.S
  49
  50 .c.o:
  51         $(CC) $(MAKEDEPS) $(CFLAGS) -c -o $@ $<
  52
  53 .c.i:
  54         $(CC) $(MAKEDEPS) $(CFLAGS) -E -o $@ $<
  55
  56 .c.s:
  57         $(CC) $(MAKEDEPS) $(CFLAGS) -S -o $@ $<
  58
  59 .S.o:
  60         $(CC) $(MAKEDEPS) $(CFLAGS) -D__ASSEMBLY__ -c -o $@ $<
  61
  62 .S.s:
  63         $(CC) $(MAKEDEPS) $(CFLAGS) -D__ASSEMBLY__ -E -o $@ $<
  64
  65 .S.lo:
  66         $(CC) $(MAKEDEPS) $(CFLAGS) $(SOFLAGS) -D__ASSEMBLY__ -c -o $@ $<
  67
  68 .S.ls:
  69         $(CC) $(MAKEDEPS) $(CFLAGS) $(SOFLAGS) -D__ASSEMBLY__ -E -o $@ $<
  70
  71 .s.o:
  72         $(CC) $(MAKEDEPS) $(CFLAGS) -x assembler -c -o $@ $<
  73
  74 .ls.lo:
  75         $(CC) $(MAKEDEPS) $(CFLAGS) $(SOFLAGS) -x assembler -c -o $@ $<
  76
  77 .c.lo:
  78         $(CC) $(MAKEDEPS) $(CFLAGS) $(SOFLAGS) -c -o $@ $<
  79
  80 .c.ls:
  81         $(CC) $(MAKEDEPS) $(CFLAGS) $(SOFLAGS) -S -o $@ $<
  82
  83 %.c32: %.elf
  84         $(OBJCOPY) --strip-debug --strip-unneeded $< $@