Wolfgang Denk wrote:

In message 200604200844.k3K8i3wk016937@scut.edu.cn you wrote:

...

I'm a beginner at u-boot porting and have a question about how can a file in directory "u-boot-1.1.4\include\configs", say pxa255_idp.h,

There is no such file. Both '\i' and '\c' are undefined escape sequences in the C programming language.

Hi Wolfgang,

The context here could be either cpp or shell. Backslash \ is a valid escape in all shells that are worthy of being used at denx.de (I forgot if you prefer bash or csh). Either way, your statement is still correct, there is no file "u-boot-1.1.4includeconfigs" (or "u-boot-1.1.4includeconfigspxa255_idp.h" to extrapolate the question).

$ ls -l u-boot-1.1.4\include\configs\pxa255_idp.h /bin/ls: u-boot-1.1.4includeconfigspxa255_idp.h: No such file or directory

$ touch u-boot-1.1.4\include\configs\pxa255_idp.h

$ ls u-boot-1.1.4\include\configs\pxa255_idp.h u-boot-1.1.4includeconfigspxa255_idp.h

$ cat x.c /* * Test escaping in the C compiler */ #include "u-boot-1.1.4\include\configs\pxa255_idp.h"

int main(int argc, char *argv[]) { return(0); }

$ make x cc x.c -o x x.c:4:53: u-boot-1.1.4\include\configs\pxa255_idp.h: No such file or directory make: *** [x] Error 1

Geek humor. I gotta get a life! ;-) gvb