OSDev.org

Posted: **Tue Dec 06, 2011 7:12 am**

Thanks to all who helped. Next is an attempt on GCC and then I guess I will drop this porting business for sometime and concentrate on my Os.
porting of binutils is over. porting of gcc is about to begin

Posted: **Tue Dec 06, 2011 9:18 am**

HardCoder wrote:The output is different from ld "-v" on my ubuntu
GNU ld (GNU Binutils for Ubuntu) 2.21.0.20110327

Virtually all Linux distributions employ customized / patched versions of common tools like binutils / GCC. One of the reasons (for me, at least) to use a cross-compiler even under Linux - I don't want to end up having relied on something distro-specific and being caught unaware by some system update. (The sources for the Cygwin binutils / GCC, for example, don't even compile when following our tutorial.)

Congratulations on going self-hosted. I believe it's the most important step in the history of any hobbyist OS - being capable to compile itself.

Some commercial operating systems weren't...

Posted: **Tue Dec 06, 2011 10:13 am**

@Solar
Thanks man.

And finally I got my wish. SUCCESSFULLY PORTED GCC.
For anyone who wishes to port GCC, you must have to implement these functions apart from newlib essentials and binutils-essentials(see earlier post)

Code: Select all

mkdir
pipe 
dup2 
alarm
execvp
closedir
opendir
readdir
chdir
execv

And also have to modify the newlib <sys/dirent.h>

Code: Select all

/* <dirent.h> includes <sys/dirent.h>, which is this file.  On a
   system which supports <dirent.h>, this file is overridden by
   dirent.h in the libc/sys/.../sys directory.  On a system which does
   not support <dirent.h>, we will get this file which uses #error to force
   an error.  */

// as per unix dirstreams.h
struct __dirstream { 
	int fd;
};

typedef struct __dirstream DIR;

struct dirent {
	ino_t  d_ino    ;//   file serial number
	char   d_name[512];//    name of entry
};

#ifdef __cplusplus
extern "C" {
#endif

int            closedir(DIR *);
DIR           *opendir(const char *);
struct dirent *readdir(DIR *);
int            readdir_r(DIR *, struct dirent *, struct dirent **);
void           rewinddir(DIR *);
void           seekdir(DIR *, long int);
long int       telldir(DIR *);

#ifdef __cplusplus
}
#endif

I feel very self-hosted.

Posted: **Tue Dec 06, 2011 1:41 pm**

That is cool, well done. I hope to be there by the middle of next year.

Next step is to run configure and make in your shell and build binutils, gcc and newlib natively.

Posted: **Tue Dec 06, 2011 2:49 pm**

gerryg400 wrote:That is cool, well done

Thanks.

gerryg400 wrote: Next step is to run configure and make in your shell and build binutils, gcc and newlib natively.

Not anytime soon though.

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Porting Binutils: On the way to self hosting

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Re: Porting Binutils: On the way to self hosting

Re: Porting Binutils: On the way to self hosting

Re: Porting Binutils: On the way to self hosting