Hi,
I run the command 'make menuconfig', then i choosed the suitable configuration to buil my project, then 'save&exit'
when i exited the menuconfig interface, there was many error messages, and the configuration were not saved
any help?

here is the error messages.

tmp/.config-target.in:79:warning: 'select' used by config symbol 'LINUX_2_6_IKANOS_Default' refer to undefined symbol 'DEFAULT_udevtrigger'
tmp/.config-target.in:82:warning: 'select' used by config symbol 'LINUX_2_6_IKANOS_Default' refer to undefined symbol 'DEFAULT_kmod-ipt-nathelper'
toolchain/binutils/Config.version:12:warning: defaults for choice values not supported
toolchain/gcc/Config.version:10:warning: defaults for choice values not supported
toolchain/gcc/Config.version:15:warning: defaults for choice values not supported
toolchain/gcc/Config.version:12:warning: defaults for choice values not supported
tmp/.config-package.in:214:warning: 'select' used by config symbol 'PACKAGE_iptables-mod-conntrack' refer to undefined symbol 'PACKAGE_kmod-ipt-conntrack'
tmp/.config-package.in:229:warning: 'select' used by config symbol 'PACKAGE_iptables-mod-extra' refer to undefined symbol 'PACKAGE_kmod-ipt-extra'
tmp/.config-package.in:247:warning: 'select' used by config symbol 'PACKAGE_iptables-mod-filter' refer to undefined symbol 'PACKAGE_kmod-ipt-filter'
tmp/.config-package.in:261:warning: 'select' used by config symbol 'PACKAGE_iptables-mod-imq' refer to undefined symbol 'PACKAGE_kmod-ipt-imq'
tmp/.config-package.in:274:warning: 'select' used by config symbol 'PACKAGE_iptables-mod-ipopt' refer to undefined symbol 'PACKAGE_kmod-ipt-ipopt'
tmp/.config-package.in:295:warning: 'select' used by config symbol 'PACKAGE_iptables-mod-ipsec' refer to undefined symbol 'PACKAGE_kmod-ipt-ipsec'
tmp/.config-package.in:309:warning: 'select' used by config symbol 'PACKAGE_iptables-mod-nat' refer to undefined symbol 'PACKAGE_kmod-ipt-nat'
tmp/.config-package.in:322:warning: 'select' used by config symbol 'PACKAGE_iptables-mod-ulog' refer to undefined symbol 'PACKAGE_kmod-ipt-ulog'
tmp/.config-package.in:661:warning: 'select' used by config symbol 'PACKAGE_ppp-mod-pppoa' refer to undefined symbol 'PACKAGE_kmod-pppoa'
tmp/.config-package.in:672:warning: 'select' used by config symbol 'PACKAGE_ppp-mod-pppoe' refer to undefined symbol 'PACKAGE_kmod-pppoe'
tmp/.config-package.in:649:warning: 'select' used by config symbol 'PACKAGE_ppp' refer to undefined symbol 'PACKAGE_kmod-ppp'
#
# using defaults found in .config
#
.config:30:warning: trying to assign nonexistent symbol IXP4XX_INCLUDE_UCODE
.config:31:warning: trying to assign nonexistent symbol X86_GRUB_ROOTPART
.config:32:warning: trying to assign nonexistent symbol X86_GRUB_BOOTOPTS
.config:60:warning: trying to assign nonexistent symbol UCI_PRECONFIG_network_lan_proto
.config:61:warning: trying to assign nonexistent symbol UCI_PRECONFIG_network_lan_ipaddr
.config:62:warning: trying to assign nonexistent symbol UCI_PRECONFIG_network_lan_netmask
.config:63:warning: trying to assign nonexistent symbol UCI_PRECONFIG_network_lan_gateway
.config:64:warning: trying to assign nonexistent symbol UCI_PRECONFIG_network_lan_dns
.config:76:warning: trying to assign nonexistent symbol BUSYBOX_CONFIG_NITPICK
.config:77:warning: trying to assign nonexistent symbol BUSYBOX_CONFIG_DESKTOP
.config:78:warning: trying to assign nonexistent symbol BUSYBOX_CONFIG_SHOW_USAGE
.config:79:warning: trying to assign nonexistent symbol BUSYBOX_CONFIG_FEATURE_VERBOSE_USAGE
.
.
.
.

...... many errors (nonexistent symbol)
.
.
.
.

.config:599:warning: trying to assign nonexistent symbol BUSYBOX_CONFIG_FEATURE_IPC_SYSLOG_BUFFER_SIZE
.config:600:warning: trying to assign nonexistent symbol BUSYBOX_CONFIG_LOGREAD
.config:601:warning: trying to assign nonexistent symbol BUSYBOX_CONFIG_FEATURE_LOGREAD_REDUCED_LOCKING
.config:602:warning: trying to assign nonexistent symbol BUSYBOX_CONFIG_KLOGD
.config:603:warning: trying to assign nonexistent symbol BUSYBOX_CONFIG_LOGGER
.config:608:warning: trying to assign nonexistent symbol BUSYBOX_CONFIG_RUNSV
.config:609:warning: trying to assign nonexistent symbol BUSYBOX_CONFIG_RUNSVDIR
.config:610:warning: trying to assign nonexistent symbol BUSYBOX_CONFIG_SV
.config:611:warning: trying to assign nonexistent symbol BUSYBOX_CONFIG_SVLOGD
.config:612:warning: trying to assign nonexistent symbol BUSYBOX_CONFIG_CHPST
.config:613:warning: trying to assign nonexistent symbol BUSYBOX_CONFIG_SETUIDGID
.config:614:warning: trying to assign nonexistent symbol BUSYBOX_CONFIG_ENVUIDGID
.config:615:warning: trying to assign nonexistent symbol BUSYBOX_CONFIG_ENVDIR
.config:616:warning: trying to assign nonexistent symbol BUSYBOX_CONFIG_SOFTLIMIT
.config:626:warning: unexpected data
.config:627:warning: unexpected data

*** End of OpenWrt configuration.
*** Execute 'make' to build the OpenWrt or try 'make help'.