错误现象：
cygwin下make编译crosstool-ng出错：
Administrator@PC-20130611GART /home/develop/crosstool-ng/crosstool-ng-1.18.0
$ make LDFLAGS="-lintl -lcurses"
GEN 'config/configure.in'
GEN 'paths.mk'
GEN 'paths.sh'
LD 'mconf'
CC 'nconf.o'
nconf.c: In function 'main':
nconf.c:1521:2: error: lvalue required as left operand of assignment
Makefile:95: recipe for target `nconf.o' failed
make[2]: *** [nconf.o] Error 1
Makefile:160: recipe for target `build-lib-kconfig' failed
make[1]: *** [build-lib-kconfig] Error 2
Makefile:120: recipe for target `build' failed
make: *** [build] Error 2
原因：
nconf.c中（不知何故）无法找到对应的宏ESCDELAY，导致此处的代码：
ESCDELAY = 1;
变成一个未知的变量的左赋值，所以报此错误。
解决办法：
把对应的出错的文件：
crosstool-ng-1.18.0\kconfig\nconf.c修改为：
//ESCDELAY = 1;
set_escdelay(1);
详见：
 |  |  |
| 5.1.2.2. lxdialog/menubox.o:menubox.c:(.text+0x7d): undefined reference to `_wattrset' |  | 5.1.2.4. bash: ct-ng: command not found |
