target/linux/generic-2.4/patches/050-build_flags.patch

   1 --- a/arch/mips/Makefile
   2 +++ b/arch/mips/Makefile
   3 @@ -44,10 +44,10 @@ MAKEBOOT = $(MAKE) -C arch/$(ARCH)/boot
   4  GCCFLAGS       := -I $(TOPDIR)/include/asm/gcc
   5  GCCFLAGS       += -G 0 -mno-abicalls -fno-pic -pipe
   6  GCCFLAGS       += $(call check_gcc, -finline-limit=100000,)
   7 -LINKFLAGS      += -G 0 -static -n
   8 -MODFLAGS       += -mlong-calls
   9 +LINKFLAGS      += -G 0 -static -n -nostdlib
  10 +MODFLAGS       += -mlong-calls -fno-common
  11
  12 -ifdef CONFIG_DEBUG_INFO
  13 +ifdef CONFIG_REMOTE_DEBUG
  14  GCCFLAGS       += -g
  15  ifdef CONFIG_SB1XXX_CORELIS
  16  GCCFLAGS       += -mno-sched-prolog -fno-omit-frame-pointer
  17 @@ -69,13 +69,13 @@ endif
  18  set_gccflags = $(shell \
  19  while :; do \
  20         cpu=$(1); isa=-$(2); \
  21 -       for gcc_opt in -march= -mcpu=; do \
  22 +       for gcc_opt in -march= -mtune=; do \
  23                 $(CC) $$gcc_opt$$cpu $$isa -S -o /dev/null \
  24                         -xc /dev/null > /dev/null 2>&1 && \
  25                         break 2; \
  26         done; \
  27         cpu=$(3); isa=-$(4); \
  28 -       for gcc_opt in -march= -mcpu=; do \
  29 +       for gcc_opt in -march= -mtune=; do \
  30                 $(CC) $$gcc_opt$$cpu $$isa -S -o /dev/null \
  31                         -xc /dev/null > /dev/null 2>&1 && \
  32                         break 2; \
  33 @@ -90,7 +90,7 @@ else \
  34  fi; \
  35  gas_abi=-Wa,-32; gas_cpu=$$cpu; gas_isa=-Wa,$$isa; \
  36  while :; do \
  37 -       for gas_opt in -Wa,-march= -Wa,-mcpu=; do \
  38 +       for gas_opt in -Wa,-march= -Wa,-mtune=; do \
  39                 $(CC) $$gas_abi $$gas_opt$$cpu $$gas_isa -Wa,-Z -c \
  40                         -o /dev/null -xassembler /dev/null > /dev/null 2>&1 && \
  41                         break 2; \
  42 @@ -172,6 +172,7 @@ endif
  43  endif
  44
  45  AFLAGS         += $(GCCFLAGS)
  46 +ASFLAGS                += $(GCCFLAGS)
  47  CFLAGS         += $(GCCFLAGS)
  48
  49  LD             += -m $(ld-emul)
  50 --- a/Makefile
  51 +++ b/Makefile
  52 @@ -17,7 +17,7 @@ HPATH         = $(TOPDIR)/include
  53  FINDHPATH      = $(HPATH)/asm $(HPATH)/linux $(HPATH)/scsi $(HPATH)/net $(HPATH)/math-emu
  54
  55  HOSTCC         = gcc
  56 -HOSTCFLAGS     = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
  57 +HOSTCFLAGS     = -Wall -Wstrict-prototypes -Os -fomit-frame-pointer
  58
  59  CROSS_COMPILE  =
  60
  61 @@ -88,10 +88,9 @@ export MODLIB
  62  #
  63  # standard CFLAGS
  64  #
  65 -
  66  CPPFLAGS := -D__KERNEL__ -I$(HPATH)
  67
  68 -CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes -Wno-trigraphs -O2 \
  69 +CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes -Wno-trigraphs -Os \
  70           -fno-strict-aliasing -fno-common
  71  CFLAGS += -fno-builtin-strpbrk -fno-builtin-sprintf
  72  ifndef CONFIG_FRAME_POINTER
  73 @@ -108,6 +107,8 @@ CFLAGS += $(call check_gcc,-Wno-pointer-
  74  # disable stupid and dangerous "optimization" in gcc 3.2+
  75  CFLAGS += $(call check_gcc,-fno-delete-null-pointer-checks,)
  76
  77 +CFLAGS += $(call check_gcc, -funit-at-a-time,)
  78 +
  79  #
  80  # ROOT_DEV specifies the default root-device when making the image.
  81  # This can be either FLOPPY, CURRENT, /dev/xxxx or empty, in which case