openwrt/target/linux/linux-2.4/patches/generic/006-extra_optimization.patch

   1 --- linux-2.4.30/Makefile       2005-10-23 20:52:56.813948000 +0200
   2 +++ linux.dev/Makefile  2005-10-23 20:53:12.482927250 +0200
   3 @@ -89,6 +89,8 @@
   4  # standard CFLAGS
   5  #
   6
   7 +check_gcc = $(shell if $(CC) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi)
   8 +
   9  CPPFLAGS := -D__KERNEL__ -I$(HPATH)
  10
  11  CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes -Wno-trigraphs -Os \
  12 @@ -100,6 +102,12 @@
  13  endif
  14  AFLAGS := -D__ASSEMBLY__ $(CPPFLAGS)
  15
  16 +CFLAGS += $(call check_gcc, -funit-at-a-time,)
  17 +
  18 +
  19 +
  20 +
  21 +
  22  #
  23  # ROOT_DEV specifies the default root-device when making the image.
  24  # This can be either FLOPPY, CURRENT, /dev/xxxx or empty, in which case