if test "x$enable_3c90x" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_3C90X=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS 3c90x.o"fiAC_ARG_ENABLE(cs89x0,  [  --enable-cs89x0         enable CS89x0 driver])if test "x$enable_cs89x0" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_CS89X0=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS cs89x0.o"fiAC_ARG_ENABLE(davicom,  [  --enable-davicom        enable Davicom driver])if test "x$enable_davicom" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_DAVICOM=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS davicom.o"fiAC_ARG_ENABLE(depca,  [  --enable-depca          enable DEPCA and EtherWORKS driver])if test "x$enable_depca" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_DEPCA=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS depca.o"fiAC_ARG_ENABLE(eepro,  [  --enable-eepro          enable Etherexpress Pro/10 driver])if test "x$enable_eepro" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_EEPRO=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS eepro.o"fiAC_ARG_ENABLE(eepro100,  [  --enable-eepro100       enable Etherexpress Pro/100 driver])if test "x$enable_eepro100" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_EEPRO100=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS eepro100.o"fiAC_ARG_ENABLE(epic100,  [  --enable-epic100        enable SMC 83c170 EPIC/100 driver])if test "x$enable_epic100" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_EPIC100=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS epic100.o"fiAC_ARG_ENABLE(3c507,  [  --enable-3c507          enable 3Com507 driver])if test "x$enable_3c507" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_3C507=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS 3c507.o"fiAC_ARG_ENABLE(exos205,  [  --enable-exos205        enable EXOS205 driver])if test "x$enable_exos205" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_EXOS205=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS exos205.o"fiAC_ARG_ENABLE(ni5210,  [  --enable-ni5210         enable Racal-Interlan NI5210 driver])if test "x$enable_ni5210" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_NI5210=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS ni5210.o"fiAC_ARG_ENABLE(lance,  [  --enable-lance          enable Lance PCI PCNet/32 driver])if test "x$enable_lance" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_LANCE=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS lance.o"fiAC_ARG_ENABLE(ne2100,  [  --enable-ne2100         enable Novell NE2100 driver])if test "x$enable_ne2100" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_NE2100=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS ne2100.o"fiAC_ARG_ENABLE(ni6510,  [  --enable-ni6510         enable Racal-Interlan NI6510 driver])if test "x$enable_ni6510" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_NI6510=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS ni6510.o"fiAC_ARG_ENABLE(natsemi,  [  --enable-natsemi        enable NatSemi DP8381x driver])if test "x$enable_natsemi" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_NATSEMI=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS natsemi.o"fiAC_ARG_ENABLE(ni5010,  [  --enable-ni5010         enable Racal-Interlan NI5010 driver])if test "x$enable_ni5010" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_NI5010=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS ni5010.o"fiAC_ARG_ENABLE(3c503,  [  --enable-3c503          enable 3Com503 driver])if test "x$enable_3c503" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_3C503=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS 3c503.o"fiAC_ARG_ENABLE(ne,  [  --enable-ne             enable NE1000/2000 ISA driver])if test "x$enable_ne" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_NE=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS ne.o"fiAC_ARG_ENABLE(ns8390,  [  --enable-ns8390         enable NE2000 PCI driver])if test "x$enable_ns8390" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_NS8390=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS ns8390.o"fiAC_ARG_ENABLE(wd,  [  --enable-wd             enable WD8003/8013, SMC8216/8416 driver])if test "x$enable_wd" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_WD=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS wd.o"fiAC_ARG_ENABLE(otulip,  [  --enable-otulip         enable old Tulip driver])if test "x$enable_otulip" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_OTULIP=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS otulip.o"fiAC_ARG_ENABLE(rtl8139,  [  --enable-rtl8139        enable Realtek 8139 driver])if test "x$enable_rtl8139" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_RTL8139=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS rtl8139.o"fiAC_ARG_ENABLE(sis900,  [  --enable-sis900         enable SIS 900 and SIS 7016 driver])if test "x$enable_sis900" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_SIS900=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS sis900.o"fiAC_ARG_ENABLE(sk-g16,  [  --enable-sk-g16         enable Schneider and Koch G16 driver])if test "x$enable_sk_g16" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_SK_G16=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS sk_g16.o"fiAC_ARG_ENABLE(smc9000,  [  --enable-smc9000        enable SMC9000 driver])if test "x$enable_smc9000" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_SMC9000=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS smc9000.o"fiAC_ARG_ENABLE(tiara,  [  --enable-tiara          enable Tiara driver])if test "x$enable_tiara" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_TIARA=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS tiara.o"fiAC_ARG_ENABLE(tulip,  [  --enable-tulip          enable Tulip driver])if test "x$enable_tulip" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_TULIP=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS tulip.o"fiAC_ARG_ENABLE(via-rhine,  [  --enable-via-rhine      enable Rhine-I/II driver])if test "x$enable_via_rhine" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_VIA_RHINE=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS via_rhine.o"fiAC_ARG_ENABLE(w89c840,  [  --enable-w89c840        enable Winbond W89c840, Compex RL100-ATX driver])if test "x$enable_w89c840" = xyes; then  NET_CFLAGS="$NET_CFLAGS -DINCLUDE_W89C840=1"  NETBOOT_DRIVERS="$NETBOOT_DRIVERS w89c840.o"fidnl Check if the netboot support is turned on.AM_CONDITIONAL(NETBOOT_SUPPORT, test "x$NET_CFLAGS" != x)if test "x$NET_CFLAGS" != x; then  FSYS_CFLAGS="$FSYS_CFLAGS -DFSYS_TFTP=1"fidnl Extra options.AC_ARG_ENABLE(3c503-shmem,  [  --enable-3c503-shmem    use 3c503 shared memory mode])if test "x$enable_3c503_shmem" = xyes; then  NET_EXTRAFLAGS="$NET_EXTRAFLAGS -DT503_SHMEM=1"fiAC_ARG_ENABLE(3c503-aui,  [  --enable-3c503-aui      use AUI by default on 3c503 cards])if test "x$enable_3c503_aui" = xyes; then  NET_EXTRAFLAGS="$NET_EXTRAFLAGS -DT503_AUI=1"fiAC_ARG_ENABLE(compex-rl2000-fix,  [  --enable-compex-rl2000-fix                          specify this if you have a Compex RL2000 PCI])if test "x$enable_compex_rl2000_fix" = xyes; then  NET_EXTRAFLAGS="$NET_EXTRAFLAGS -DCOMPEX_RL2000_FIX=1"fiAC_ARG_ENABLE(smc9000-scan,  [  --enable-smc9000-scan=LIST                          probe for SMC9000 I/O addresses using LIST],  [NET_EXTRAFLAGS="$NET_EXTRAFLAGS -DSMC9000_SCAN=$enable_smc9000_scan"])AC_ARG_ENABLE(ne-scan,  [  --enable-ne-scan=LIST   probe for NE base address using LIST],  [NET_EXTRAFLAGS="$NET_EXTRAFLAGS -DNE_SCAN=$enable_ne_scan"],  [NET_EXTRAFLAGS="$NET_EXTRAFLAGS -DNE_SCAN=0x280,0x300,0x320,0x340"])AC_ARG_ENABLE(wd-default-mem,  [  --enable-wd-default-mem=MEM                          set the default memory location for WD/SMC],  [NET_EXTRAFLAGS="$NET_EXTRAFLAGS -DWD_DEFAULT_MEM=$enable_wd_default_mem"],  [NET_EXTRAFLAGS="$NET_EXTRAFLAGS -DWD_DEFAULT_MEM=0xCC000"])AC_ARG_ENABLE(cs-scan,  [  --enable-cs-scan=LIST   probe for CS89x0 base address using LIST],  [NET_EXTRAFLAGS="$NET_EXTRAFLAGS -DCS_SCAN=$enable_cs_scan"])dnl DisklessAC_ARG_ENABLE(diskless,  [  --enable-diskless       enable diskless support])AM_CONDITIONAL(DISKLESS_SUPPORT, test "x$enable_diskless" = xyes)dnl Hercules terminalAC_ARG_ENABLE(hercules,  [  --disable-hercules      disable hercules terminal support])AM_CONDITIONAL(HERCULES_SUPPORT, test "x$enable_hercules" != xno)dnl Serial terminalAC_ARG_ENABLE(serial,  [  --disable-serial        disable serial terminal support])AM_CONDITIONAL(SERIAL_SUPPORT, test "x$enable_serial" != xno)dnl Simulation of the slowness of a serial device.AC_ARG_ENABLE(serial-speed-simulation,  [  --enable-serial-speed-simulation                          simulate the slowness of a serial device])AM_CONDITIONAL(SERIAL_SPEED_SIMULATION,  test "x$enable_serial_speed_simulation" = xyes)# Sanity check.if test "x$enable_diskless" = xyes; then  if test "x$NET_CFLAGS" = x; then    AC_MSG_ERROR([You must enable at least one network driver])  fifidnl Embed a menu string in GRUB itself.AC_ARG_ENABLE(preset-menu,  [  --enable-preset-menu=FILE                          preset a menu file FILE in Stage 2])if test "x$enable_preset_menu" = x; then  :else  if test -r $enable_preset_menu; then    grub_DEFINE_FILE(PRESET_MENU_STRING, [$enable_preset_menu])  else    AC_MSG_ERROR([Cannot read the preset menu file $enable_preset_menu])  fifidnl Build the example Multiboot kernel.AC_ARG_ENABLE(example-kernel,  [  --enable-example-kernel                          build the example Multiboot kernel])AM_CONDITIONAL(BUILD_EXAMPLE_KERNEL, test "x$enable_example_kernel" = xyes)dnl Automatic Linux mem= option.AC_ARG_ENABLE(auto-linux-mem-opt,  [  --disable-auto-linux-mem-opt                          don't pass Linux mem= option automatically])if test "x$enable_auto_linux_mem_opt" = xno; then  :else  AC_DEFINE(AUTO_LINUX_MEM_OPT)fidnl Now substitute the variables.AC_SUBST(FSYS_CFLAGS)AC_SUBST(NET_CFLAGS)AC_SUBST(NET_EXTRAFLAGS)AC_SUBST(NETBOOT_DRIVERS)dnl Because recent automake complains about ASFLAGS, set it here.ASFLAGS='$(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(CPPFLAGS) $(CFLAGS)'AC_SUBST(ASFLAGS)dnl Output.AC_OUTPUT([Makefile stage1/Makefile stage2/Makefile docs/Makefile \	lib/Makefile util/Makefile grub/Makefile \	netboot/Makefile util/grub-image util/grub-install \	util/grub-md5-crypt util/grub-terminfo])