* How to identity processor architecture
@ 2011-01-27 6:07 prabhu
2011-01-27 6:26 ` Enrico Granata
0 siblings, 1 reply; 24+ messages in thread
From: prabhu @ 2011-01-27 6:07 UTC (permalink / raw)
To: kernelnewbies
Hi Dear,
I just wanna to know my processor architecture(32bit or 64 bit) through
c programming.
According to me the sizeof of pointer will give the result. Like below
coding.
int main()
{
int *ptr;
printf("%d",sizeof(ptr));
}
Please correct me if i am wrong...
Any suggestion or help would be appreciated.
Thanks,
Prabhu
^ permalink raw reply [flat|nested] 24+ messages in thread* How to identity processor architecture 2011-01-27 6:07 How to identity processor architecture prabhu @ 2011-01-27 6:26 ` Enrico Granata 2011-01-27 6:31 ` arun kumar 2011-01-27 6:40 ` prabhu 0 siblings, 2 replies; 24+ messages in thread From: Enrico Granata @ 2011-01-27 6:26 UTC (permalink / raw) To: kernelnewbies What if one is compiling 32bit code on a 64bit processor? Would 4 be an acceptable result to you in that case? Enrico Granata Computer Science & Engineering Department (EBU3B) - Room 3240 office phone 858 534 9914 University of California, San Diego On Jan 26, 2011, at 10:07 PM, prabhu wrote: > Hi Dear, > > I just wanna to know my processor architecture(32bit or 64 bit) through > c programming. > > According to me the sizeof of pointer will give the result. Like below > coding. > > int main() > { > int *ptr; > printf("%d",sizeof(ptr)); > } > > Please correct me if i am wrong... > > Any suggestion or help would be appreciated. > > Thanks, > Prabhu > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies at kernelnewbies.org > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20110126/bd71567b/attachment.html ^ permalink raw reply [flat|nested] 24+ messages in thread
* How to identity processor architecture 2011-01-27 6:26 ` Enrico Granata @ 2011-01-27 6:31 ` arun kumar 2011-01-27 6:40 ` prabhu 1 sibling, 0 replies; 24+ messages in thread From: arun kumar @ 2011-01-27 6:31 UTC (permalink / raw) To: kernelnewbies the size of the integer variable will be equal to your processor architecture(32bit or 64 bit). On Thu, Jan 27, 2011 at 11:56 AM, Enrico Granata <egranata@ucsd.edu> wrote: > What if one is compiling 32bit code on a 64bit processor? Would 4 be an > acceptable result to you in that case? > > *Enrico Granata* > *Computer Science & Engineering Department (EBU3B) - **Room 3240* > *office phone 858 534 9914* > *University of California, San Diego* > > On Jan 26, 2011, at 10:07 PM, prabhu wrote: > > Hi Dear, > > I just wanna to know my processor architecture(32bit or 64 bit) through > c programming. > > According to me the sizeof of pointer will give the result. Like below > coding. > > int main() > { > int *ptr; > printf("%d",sizeof(ptr)); > } > > Please correct me if i am wrong... > > Any suggestion or help would be appreciated. > > Thanks, > Prabhu > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies at kernelnewbies.org > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies at kernelnewbies.org > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20110127/fef7b460/attachment.html ^ permalink raw reply [flat|nested] 24+ messages in thread
* How to identity processor architecture 2011-01-27 6:26 ` Enrico Granata 2011-01-27 6:31 ` arun kumar @ 2011-01-27 6:40 ` prabhu 2011-01-27 6:45 ` Mulyadi Santosa 1 sibling, 1 reply; 24+ messages in thread From: prabhu @ 2011-01-27 6:40 UTC (permalink / raw) To: kernelnewbies Hi Enrico, I am not sure. No, because 32bit code will tell the datatype size and i think pointer variable depends on architecture. So 64 bit processor needs 64 address line to point the data location. So pointer variable needs to be 8 byte. please correct me if i am worng. Thanks, Prabhu Enrico Granata wrote: > What if one is compiling 32bit code on a 64bit processor? Would 4 be > an acceptable result to you in that case? > > /Enrico Granata/ > /Computer Science & Engineering Department (EBU3B) - //Room 3240/ > /office phone 858 534 9914/ > /University of California, San Diego/ > > On Jan 26, 2011, at 10:07 PM, prabhu wrote: > >> Hi Dear, >> >> I just wanna to know my processor architecture(32bit or 64 bit) through >> c programming. >> >> According to me the sizeof of pointer will give the result. Like below >> coding. >> >> int main() >> { >> int *ptr; >> printf("%d",sizeof(ptr)); >> } >> >> Please correct me if i am wrong... >> >> Any suggestion or help would be appreciated. >> >> Thanks, >> Prabhu >> >> _______________________________________________ >> Kernelnewbies mailing list >> Kernelnewbies at kernelnewbies.org <mailto:Kernelnewbies@kernelnewbies.org> >> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20110127/37bc8117/attachment-0001.html ^ permalink raw reply [flat|nested] 24+ messages in thread
* How to identity processor architecture 2011-01-27 6:40 ` prabhu @ 2011-01-27 6:45 ` Mulyadi Santosa 2011-01-27 6:54 ` Enrico Granata ` (2 more replies) 0 siblings, 3 replies; 24+ messages in thread From: Mulyadi Santosa @ 2011-01-27 6:45 UTC (permalink / raw) To: kernelnewbies On Thu, Jan 27, 2011 at 13:40, prabhu <prabhum@msys-tech.com> wrote: > No, because 32bit code will tell the datatype size and i think pointer > variable depends on architecture. > So 64 bit processor needs 64 address line to point the data location. So > pointer variable needs to be 8 byte. Please don't top post and please use the new list address, ok? :) IMO, I second your opinion. And as addition, I think it's worth to check /proc/cpuinfo too in "address sizes" field NB: I was thinking, if in x64, it is operating in full 32 bit mode (not hybrid one), it is supposed to yield 32 bit address too, right? -- regards, Mulyadi Santosa Freelance Linux trainer and consultant blog: the-hydra.blogspot.com training: mulyaditraining.blogspot.com ^ permalink raw reply [flat|nested] 24+ messages in thread
* How to identity processor architecture 2011-01-27 6:45 ` Mulyadi Santosa @ 2011-01-27 6:54 ` Enrico Granata 2011-01-27 7:15 ` dharmvir kumar 2011-01-27 7:24 ` Mandeep Sandhu 2011-01-27 7:07 ` How to identity processor architecture prabhu 2011-01-27 19:27 ` mindentropy 2 siblings, 2 replies; 24+ messages in thread From: Enrico Granata @ 2011-01-27 6:54 UTC (permalink / raw) To: kernelnewbies On Jan 26, 2011, at 10:45 PM, Mulyadi Santosa wrote: > On Thu, Jan 27, 2011 at 13:40, prabhu <prabhum@msys-tech.com> wrote: >> No, because 32bit code will tell the datatype size and i think pointer >> variable depends on architecture. >> So 64 bit processor needs 64 address line to point the data location. So >> pointer variable needs to be 8 byte. > > Please don't top post and please use the new list address, ok? :) > > IMO, I second your opinion. And as addition, I think it's worth to > check /proc/cpuinfo too in "address sizes" field > > NB: I was thinking, if in x64, it is operating in full 32 bit mode > (not hybrid one), it is supposed to yield 32 bit address too, right? > > -- > regards, > > Mulyadi Santosa > Freelance Linux trainer and consultant > > blog: the-hydra.blogspot.com > training: mulyaditraining.blogspot.com > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies at kernelnewbies.org > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies I guess a 64bit processor does need 64bit addresses to reference memory. But at the same time, if 32 bit programs are to run unmodified on 64 bit architectures there needs to be ways in which 32bit pointers can still work. So, I am almost 100% sure that compiling 32bit code, even on a 64bit processor, should yield 4 for sizeof(void*) Enrico Granata Computer Science & Engineering Department (EBU3B) - Room 3240 office phone 858 534 9914 University of California, San Diego -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20110126/92bcc874/attachment.html ^ permalink raw reply [flat|nested] 24+ messages in thread
* How to identity processor architecture 2011-01-27 6:54 ` Enrico Granata @ 2011-01-27 7:15 ` dharmvir kumar 2011-01-27 7:24 ` Mandeep Sandhu 1 sibling, 0 replies; 24+ messages in thread From: dharmvir kumar @ 2011-01-27 7:15 UTC (permalink / raw) To: kernelnewbies 64-bit processors have lm ("long mode") in the flags section of cpuinfowhereas 32-bit processors have not. regards Dharmvir Kumar On Thu, Jan 27, 2011 at 12:24 PM, Enrico Granata <egranata@ucsd.edu> wrote: > On Jan 26, 2011, at 10:45 PM, Mulyadi Santosa wrote: > > On Thu, Jan 27, 2011 at 13:40, prabhu <prabhum@msys-tech.com> wrote: > > No, because 32bit code will tell the datatype size and i think pointer > > variable depends on architecture. > > So 64 bit processor needs 64 address line to point the data location. So > > pointer variable needs to be 8 byte. > > > Please don't top post and please use the new list address, ok? :) > > IMO, I second your opinion. And as addition, I think it's worth to > check /proc/cpuinfo too in "address sizes" field > > NB: I was thinking, if in x64, it is operating in full 32 bit mode > (not hybrid one), it is supposed to yield 32 bit address too, right? > > -- > regards, > > Mulyadi Santosa > Freelance Linux trainer and consultant > > blog: the-hydra.blogspot.com > training: mulyaditraining.blogspot.com > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies at kernelnewbies.org > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > > I guess a 64bit processor does need 64bit addresses to reference memory. > But at the same time, if 32 bit programs are to run unmodified on 64 bit > architectures there needs to be ways in which 32bit pointers can still work. > So, I am almost 100% sure that compiling 32bit code, even on a 64bit > processor, should yield 4 for sizeof(void*) > > *Enrico Granata* > *Computer Science & Engineering Department (EBU3B) - **Room 3240* > *office phone 858 534 9914* > *University of California, San Diego* > * > * > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies at kernelnewbies.org > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20110127/e349ee2a/attachment-0001.html ^ permalink raw reply [flat|nested] 24+ messages in thread
* How to identity processor architecture 2011-01-27 6:54 ` Enrico Granata 2011-01-27 7:15 ` dharmvir kumar @ 2011-01-27 7:24 ` Mandeep Sandhu 2011-01-27 8:20 ` prabhu 2011-01-27 9:23 ` Busybox for powerpc doesnt compile Giriprasad Deviprasad 1 sibling, 2 replies; 24+ messages in thread From: Mandeep Sandhu @ 2011-01-27 7:24 UTC (permalink / raw) To: kernelnewbies > I guess a 64bit processor does need 64bit addresses to reference memory. But > at the same time, if 32 bit programs are to run unmodified on 64 bit > architectures there needs to be ways in which 32bit pointers can still work. > So, I am almost 100% sure that compiling 32bit code, even on a 64bit > processor, should yield 4 for sizeof(void*) You are 100% right. Tried this on 2 laptops: printf("Is this a %s-bit machine?\n", ((sizeof(void*) == 4) ? "32" : "64")); 32-Bit ubuntu (10.10) on 64-bit proc: "Is this a 32-bit machine?" 64-Bit ubuntu (10.10) on 64-bit proc: "Is this a 64-bit machine?" Regards, -mandeep > Enrico Granata > Computer Science & Engineering Department (EBU3B) -?Room 3240 > office phone 858 534 9914 > University of California, San Diego > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies at kernelnewbies.org > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > ^ permalink raw reply [flat|nested] 24+ messages in thread
* How to identity processor architecture 2011-01-27 7:24 ` Mandeep Sandhu @ 2011-01-27 8:20 ` prabhu 2011-01-27 8:22 ` Enrico Granata 2011-01-27 9:23 ` Busybox for powerpc doesnt compile Giriprasad Deviprasad 1 sibling, 1 reply; 24+ messages in thread From: prabhu @ 2011-01-27 8:20 UTC (permalink / raw) To: kernelnewbies Mandeep Sandhu wrote: >> I guess a 64bit processor does need 64bit addresses to reference memory. But >> at the same time, if 32 bit programs are to run unmodified on 64 bit >> architectures there needs to be ways in which 32bit pointers can still work. >> So, I am almost 100% sure that compiling 32bit code, even on a 64bit >> processor, should yield 4 for sizeof(void*) >> > > You are 100% right. Tried this on 2 laptops: > > printf("Is this a %s-bit machine?\n", ((sizeof(void*) == 4) ? "32" : "64")); > > 32-Bit ubuntu (10.10) on 64-bit proc: > "Is this a 32-bit machine?" > > 64-Bit ubuntu (10.10) on 64-bit proc: > "Is this a 64-bit machine?" > > Regards, > -mandeep > Hi Mandeep, Thanks a lot. So is there any other way available to identify the processor architecture using c code?? . The program needs to return correct processor architecture(32bit or 64bit) irrespective to the OS architecture. Thanks, Prabhu >> Enrico Granata >> Computer Science & Engineering Department (EBU3B) - Room 3240 >> office phone 858 534 9914 >> University of California, San Diego >> >> _______________________________________________ >> Kernelnewbies mailing list >> Kernelnewbies at kernelnewbies.org >> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >> >> >> > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies at kernelnewbies.org > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20110127/22de50ff/attachment.html ^ permalink raw reply [flat|nested] 24+ messages in thread
* How to identity processor architecture 2011-01-27 8:20 ` prabhu @ 2011-01-27 8:22 ` Enrico Granata 2011-01-27 9:53 ` prabhu 0 siblings, 1 reply; 24+ messages in thread From: Enrico Granata @ 2011-01-27 8:22 UTC (permalink / raw) To: kernelnewbies Enrico Granata Computer Science & Engineering Department (EBU3B) - Room 3240 office phone 858 534 9914 University of California, San Diego On Jan 27, 2011, at 12:20 AM, prabhu wrote: > Mandeep Sandhu wrote: >> >>> I guess a 64bit processor does need 64bit addresses to reference memory. But >>> at the same time, if 32 bit programs are to run unmodified on 64 bit >>> architectures there needs to be ways in which 32bit pointers can still work. >>> So, I am almost 100% sure that compiling 32bit code, even on a 64bit >>> processor, should yield 4 for sizeof(void*) >>> >> >> You are 100% right. Tried this on 2 laptops: >> >> printf("Is this a %s-bit machine?\n", ((sizeof(void*) == 4) ? "32" : "64")); >> >> 32-Bit ubuntu (10.10) on 64-bit proc: >> "Is this a 32-bit machine?" >> >> 64-Bit ubuntu (10.10) on 64-bit proc: >> "Is this a 64-bit machine?" >> >> Regards, >> -mandeep >> > > Hi Mandeep, > > Thanks a lot. > > So is there any other way available to identify the processor architecture using c code?? . The program needs to return correct > processor architecture(32bit or 64bit) irrespective to the OS architecture. > > Thanks, > Prabhu >>> Enrico Granata >>> Computer Science & Engineering Department (EBU3B) - Room 3240 >>> office phone 858 534 9914 >>> University of California, San Diego >>> >>> _______________________________________________ >>> Kernelnewbies mailing list >>> Kernelnewbies at kernelnewbies.org >>> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >>> >>> >>> >> >> _______________________________________________ >> Kernelnewbies mailing list >> Kernelnewbies at kernelnewbies.org >> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >> >> >> > Someone already hinted at it, I guess: > 64-bit processors have lm ("long mode") in the flags section of cpuinfo whereas 32-bit processors have not. > regards > Dharmvir Kumar -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20110127/6bbf5427/attachment.html ^ permalink raw reply [flat|nested] 24+ messages in thread
* How to identity processor architecture 2011-01-27 8:22 ` Enrico Granata @ 2011-01-27 9:53 ` prabhu 2011-01-27 11:15 ` Henry Gebhardt 0 siblings, 1 reply; 24+ messages in thread From: prabhu @ 2011-01-27 9:53 UTC (permalink / raw) To: kernelnewbies >> 64-bit processors have lm ("long mode") in the flags section >> of cpuinfo whereas 32-bit processors have not. >> regards >> Dharmvir Kumar Thanks a lot folks. Adding more detail on this. Below detail helps to understand CPU architecture. _* *__*Finding CPU Arch*_ $ grep flags /proc/cpuinfo | uniq | egrep -o -w "rm|tm|lm" Under "Flags" section in /proc/cpuinfo, you will find any of the flags "tm" or "rm" or "lm" * rm (Real Mode) means it is a 16 bit processor * tm (Transparent Mode) means it is a 32 bit processor * lm (Long Mode) means it is a 64 bit processor Is this only way to find the processor architecture ???? Any C programming technique apart from using this /proc/cpuinfo detail? Thanks, Prabhu -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20110127/732cd8c0/attachment.html ^ permalink raw reply [flat|nested] 24+ messages in thread
* How to identity processor architecture 2011-01-27 9:53 ` prabhu @ 2011-01-27 11:15 ` Henry Gebhardt 2011-01-27 11:32 ` Thirugnanam Balamurugan 2011-01-27 11:44 ` Pravin Shedage 0 siblings, 2 replies; 24+ messages in thread From: Henry Gebhardt @ 2011-01-27 11:15 UTC (permalink / raw) To: kernelnewbies On Thu, Jan 27, 2011 at 03:23:28PM +0530, prabhu wrote: > Any C programming technique apart from using this /proc/cpuinfo detail? What about using the machine field of uname(2): $ man 2 uname Quoting from that man page: [...] the operating system presumably knows its name, release and version. It also knows what hardware it runs on. Perhaps a downside, it returns the machine type as a string. Does that do what you want? I also find "man linux32" rather interesting: setarch - change reported architecture in new program environment and set personality flags Might be useful for testing. Greetings, Henry ^ permalink raw reply [flat|nested] 24+ messages in thread
* How to identity processor architecture 2011-01-27 11:15 ` Henry Gebhardt @ 2011-01-27 11:32 ` Thirugnanam Balamurugan 2011-01-27 11:44 ` Pravin Shedage 1 sibling, 0 replies; 24+ messages in thread From: Thirugnanam Balamurugan @ 2011-01-27 11:32 UTC (permalink / raw) To: kernelnewbies Also , the below one could help. $ getconf LONG_BIT 64 $ Regards, Bala -----Original Message----- From: kernelnewbies-bounces@kernelnewbies.org [mailto:kernelnewbies-bounces at kernelnewbies.org] On Behalf Of Henry Gebhardt Sent: Thursday, January 27, 2011 4:46 PM To: prabhu Cc: Enrico Granata; kernelnewbies Subject: Re: How to identity processor architecture On Thu, Jan 27, 2011 at 03:23:28PM +0530, prabhu wrote: > Any C programming technique apart from using this /proc/cpuinfo detail? What about using the machine field of uname(2): $ man 2 uname Quoting from that man page: [...] the operating system presumably knows its name, release and version. It also knows what hardware it runs on. Perhaps a downside, it returns the machine type as a string. Does that do what you want? I also find "man linux32" rather interesting: setarch - change reported architecture in new program environment and set personality flags Might be useful for testing. Greetings, Henry _______________________________________________ Kernelnewbies mailing list Kernelnewbies at kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies ^ permalink raw reply [flat|nested] 24+ messages in thread
* How to identity processor architecture 2011-01-27 11:15 ` Henry Gebhardt 2011-01-27 11:32 ` Thirugnanam Balamurugan @ 2011-01-27 11:44 ` Pravin Shedage 2011-01-27 12:33 ` prabhu 1 sibling, 1 reply; 24+ messages in thread From: Pravin Shedage @ 2011-01-27 11:44 UTC (permalink / raw) To: kernelnewbies Hi, This C program might help you. #include <stdio.h> #include <stdlib.h> #include <string.h> #include <errno.h> #include <sys/utsname.h> int main() { struct utsname *buf = NULL; buf = malloc(sizeof(struct utsname)); if (buf == NULL) { fprintf(stderr,"Memory Allocation Error: %s \n", strerror(errno)); exit(-1); } if (uname(buf) < 0) { fprintf(stderr,"UName Error: %s \n", strerror(errno)); exit(-1); } printf ("Processor arch =:>) %s \n", buf->machine); return 0; } On Thu, Jan 27, 2011 at 4:45 PM, Henry Gebhardt <hsggebhardt@googlemail.com>wrote: > On Thu, Jan 27, 2011 at 03:23:28PM +0530, prabhu wrote: > > Any C programming technique apart from using this /proc/cpuinfo detail? > > What about using the machine field of uname(2): > > $ man 2 uname > > Quoting from that man page: > > [...] the operating system presumably knows its name, release > and version. It also knows what hardware it runs on. > > Perhaps a downside, it returns the machine type as a string. Does that > do what you want? > > I also find "man linux32" rather interesting: > > setarch - change reported architecture in new program environment > and set personality flags > > Might be useful for testing. > > > Greetings, > Henry > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies at kernelnewbies.org > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > -- Thanks & Regards, ---------PraviN--------- -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20110127/39c367d2/attachment.html ^ permalink raw reply [flat|nested] 24+ messages in thread
* How to identity processor architecture 2011-01-27 11:44 ` Pravin Shedage @ 2011-01-27 12:33 ` prabhu 0 siblings, 0 replies; 24+ messages in thread From: prabhu @ 2011-01-27 12:33 UTC (permalink / raw) To: kernelnewbies Pravin Shedage wrote: > Hi, > > This C program might help you. > > #include <stdio.h> > #include <stdlib.h> > #include <string.h> > #include <errno.h> > #include <sys/utsname.h> > > int main() > { > struct utsname *buf = NULL; > > > > buf = malloc(sizeof(struct utsname)); > if (buf == NULL) { > fprintf(stderr,"Memory Allocation Error: %s \n", strerror(errno)); > exit(-1); > } > > if (uname(buf) < 0) { > fprintf(stderr,"UName Error: %s \n", strerror(errno)); > exit(-1); > } > > printf ("Processor arch =:>) %s \n", buf->machine); > > return 0; > } > > > > > On Thu, Jan 27, 2011 at 4:45 PM, Henry Gebhardt > <hsggebhardt at googlemail.com <mailto:hsggebhardt@googlemail.com>> wrote: > > On Thu, Jan 27, 2011 at 03:23:28PM +0530, prabhu wrote: > > Any C programming technique apart from using this /proc/cpuinfo > detail? > > What about using the machine field of uname(2): > > $ man 2 uname > > Quoting from that man page: > > [...] the operating system presumably knows its name, release > and version. It also knows what hardware it runs on. > > Perhaps a downside, it returns the machine type as a string. Does > that > do what you want? > > I also find "man linux32" rather interesting: > > setarch - change reported architecture in new program environment > and set personality flags > > Might be useful for testing. > > > Greetings, > Henry > Both Ideas give the Kernel architecture not cpu architecture. You can get exact cpu architecture through lshw command. *-cpu product: Intel(R) Pentium(R) Dual CPU E2160 @ 1.80GHz vendor: Intel Corp. physical id: 1 bus info: cpu at 0 version: 6.15.13 serial: 0000-06FD-0000-0000-0000-0000 size: 1200MHz capacity: 1200MHz width: 64 bits capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx x86-64 constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm lahf_lm cpufreq configuration: id=1 *-logicalcpu:0 description: Logical CPU physical id: 1.1 width: 64 bits capabilities: logical *-logicalcpu:1 description: Logical CPU physical id: 1.2 width: 64 bits capabilities: logical > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies at kernelnewbies.org > <mailto:Kernelnewbies@kernelnewbies.org> > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > > > > -- > > > Thanks & Regards, > ---------PraviN--------- > > > ------------------------------------------------------------------------ > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies at kernelnewbies.org > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20110127/e8f6faf3/attachment.html ^ permalink raw reply [flat|nested] 24+ messages in thread
* Busybox for powerpc doesnt compile 2011-01-27 7:24 ` Mandeep Sandhu 2011-01-27 8:20 ` prabhu @ 2011-01-27 9:23 ` Giriprasad Deviprasad 2011-01-27 10:11 ` yy Hong 1 sibling, 1 reply; 24+ messages in thread From: Giriprasad Deviprasad @ 2011-01-27 9:23 UTC (permalink / raw) To: kernelnewbies Hi All, ?I am trying to compile busybox-1.17.1 for mpc8250 based powerpc architecture. My settings are as : export LDFLAGS="-nostdlib -L/opt/mpc8250/tools/ppc_6xx/usr/lib/" export LIBRARY_PATH=/opt/mpc8250/tools/ppc_6xx/usr/lib/ echo $PATH /usr/lib/qt-3.3/bin:/usr/kerberos/sbin:/usr/kerberos/bin:/usr/lib/ccache:/opt/mpc8250/tools/usr/bin/:/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin:/root/bin ?I specified in menuconfig: CFLAGS as -I/opt/mpc8250/tools/ppc_6xx/usr/include/ -L/opt/mpc8250/tools/ppc_6xx/usr/lib/ make ARCH=powerpc CROSS_COMPILE=powerpc-linux- --include-dir=/opt/mpc8250/tools/ppc_6xx/usr/include/ PREFIX=/home/user/target/mpc8250/rootfs ? LD????? applets/built-in.o ? LINK??? busybox_unstripped Trying libraries: crypt m Failed: -Wl,--start-group -lcrypt -lm -Wl,--end-group Output of: powerpc-linux-gcc -Wall -Wshadow -Wwrite-strings -Wundef -Wstrict-prototypes -Wunused -Wunused-parameter -Wunused-function -Wunused-value -Wmissing-prototypes -Wmissing-declarations -Wdeclaration-after-statement -Wold-style-definition -fno-builtin-strlen -finline-limit=0 -fomit-frame-pointer -ffunction-sections -fdata-sections -fno-guess-branch-probability -funsigned-char -static-libgcc -falign-functions=1 -falign-jumps=1 -falign-labels=1 -falign-loops=1 -Os -I/opt/mpc8250/tools/ppc_6xx/usr/include/ -L/opt/mpc8250/tools/ppc_6xx/usr/lib/ -static -nostdlib -L/opt/mpc8250/tools/ppc_6xx/usr/lib/ -o busybox_unstripped -Wl,--start-group applets/built-in.o archival/lib.a archival/libunarchive/lib.a console-tools/lib.a coreutils/lib.a coreutils/libcoreutils/lib.a debianutils/lib.a e2fsprogs/lib.a editors/lib.a findutils/lib.a init/lib.a libbb/lib.a libpwdgrp/lib.a loginutils/lib.a mailutils/lib.a miscutils/lib.a modutils/lib.a networking/lib.a networking/libiproute/lib.a networking/udhcp/lib.a printutils/lib.a procps/lib.a runit/lib.a selinux/lib.a shell/lib.a sysklogd/lib.a util-linux/lib.a util-linux/volume_id/lib.a archival/built-in.o archival/libunarchive/built-in.o console-tools/built-in.o coreutils/built-in.o coreutils/libcoreutils/built-in.o debianutils/built-in.o e2fsprogs/built-in.o editors/built-in.o findutils/built-in.o init/built-in.o libbb/built-in.o libpwdgrp/built-in.o loginutils/built-in.o mailutils/built-in.o miscutils/built-in.o modutils/built-in.o networking/built-in.o networking/libiproute/built-in.o networking/udhcp/built-in.o printutils/built-in.o procps/built-in.o runit/built-in.o selinux/built-in.o shell/built-in.o sysklogd/built-in.o util-linux/built-in.o util-linux/volume_id/built-in.o -Wl,--end-group -Wl,--start-group -lcrypt -lm -Wl,--end-group ========== /opt/mpc8250/tools/usr/bin/../lib/gcc/powerpc-linux/4.2.2/../../../../powerpc-linux/bin/ld: cannot find -lcrypt collect2: ld returned 1 exit status make: *** [busybox_unstripped] Error 1 Also tried: make ARCH=powerpc CROSS=powerpc-linux- --include-dir=/opt/mpc8250/tools/ppc_6xx/usr/include/ PREFIX=/home/user/target/mpc8250/rootfs ? LINK??? busybox_unstripped Trying libraries: crypt m Failed: -Wl,--start-group -lcrypt -lm -Wl,--end-group Output of: powerpc-linux-gcc -Wall -Wshadow -Wwrite-strings -Wundef -Wstrict-prototypes -Wunused -Wunused-parameter -Wunused-function -Wunused-value -Wmissing-prototypes -Wmissing-declarations -Wdeclaration-after-statement -Wold-style-definition -fno-builtin-strlen -finline-limit=0 -fomit-frame-pointer -ffunction-sections -fdata-sections -fno-guess-branch-probability -funsigned-char -static-libgcc -falign-functions=1 -falign-jumps=1 -falign-labels=1 -falign-loops=1 -Os -I/opt/mpc8250/tools/ppc_6xx/usr/include/ -L/opt/mpc8250/tools/ppc_6xx/usr/lib/ -static -nostdlib -L/opt/mpc8250/tools/ppc_6xx/usr/lib/ -o busybox_unstripped -Wl,--start-group applets/built-in.o archival/lib.a archival/libunarchive/lib.a console-tools/lib.a coreutils/lib.a coreutils/libcoreutils/lib.a debianutils/lib.a e2fsprogs/lib.a editors/lib.a findutils/lib.a init/lib.a libbb/lib.a libpwdgrp/lib.a loginutils/lib.a mailutils/lib.a miscutils/lib.a modutils/lib.a networking/lib.a networking/libiproute/lib.a networking/udhcp/lib.a printutils/lib.a procps/lib.a runit/lib.a selinux/lib.a shell/lib.a sysklogd/lib.a util-linux/lib.a util-linux/volume_id/lib.a archival/built-in.o archival/libunarchive/built-in.o console-tools/built-in.o coreutils/built-in.o coreutils/libcoreutils/built-in.o debianutils/built-in.o e2fsprogs/built-in.o editors/built-in.o findutils/built-in.o init/built-in.o libbb/built-in.o libpwdgrp/built-in.o loginutils/built-in.o mailutils/built-in.o miscutils/built-in.o modutils/built-in.o networking/built-in.o networking/libiproute/built-in.o networking/udhcp/built-in.o printutils/built-in.o procps/built-in.o runit/built-in.o selinux/built-in.o shell/built-in.o sysklogd/built-in.o util-linux/built-in.o util-linux/volume_id/built-in.o -Wl,--end-group -Wl,--start-group -lcrypt -lm -Wl,--end-group ========== /opt/mpc8250/tools/usr/bin/../lib/gcc/powerpc-linux/4.2.2/../../../../powerpc-linux/bin/ld: cannot find -lcrypt collect2: ld returned 1 exit status make: *** [busybox_unstripped] Error 1 Any clues as to why this happens? Thanks & Regards, D.Giriprasad -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20110127/0a0dbaac/attachment-0001.html ^ permalink raw reply [flat|nested] 24+ messages in thread
* Busybox for powerpc doesnt compile 2011-01-27 9:23 ` Busybox for powerpc doesnt compile Giriprasad Deviprasad @ 2011-01-27 10:11 ` yy Hong 2011-01-27 13:47 ` Anuz Pratap Singh Tomar ` (2 more replies) 0 siblings, 3 replies; 24+ messages in thread From: yy Hong @ 2011-01-27 10:11 UTC (permalink / raw) To: kernelnewbies 2011/1/27 Giriprasad Deviprasad <g_pr21@yahoo.in> > Hi All, > > I am trying to compile busybox-1.17.1 for mpc8250 based powerpc > architecture. My settings are as : > > export LDFLAGS="-nostdlib -L/opt/mpc8250/tools/ppc_6xx/usr/lib/" > export LIBRARY_PATH=/opt/mpc8250/tools/ppc_6xx/usr/lib/ > > echo $PATH > > /usr/lib/qt-3.3/bin:/usr/kerberos/sbin:/usr/kerberos/bin:/usr/lib/ccache:/opt/mpc8250/tools/usr/bin/:/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin:/root/bin > > I specified in menuconfig: > CFLAGS as -I/opt/mpc8250/tools/ppc_6xx/usr/include/ > -L/opt/mpc8250/tools/ppc_6xx/usr/lib/ > > make ARCH=powerpc CROSS_COMPILE=powerpc-linux- > --include-dir=/opt/mpc8250/tools/ppc_6xx/usr/include/ > PREFIX=/home/user/target/mpc8250/rootfs > LD applets/built-in.o > LINK busybox_unstripped > Trying libraries: crypt m > Failed: -Wl,--start-group -lcrypt -lm -Wl,--end-group > Output of: > powerpc-linux-gcc -Wall -Wshadow -Wwrite-strings -Wundef > -Wstrict-prototypes -Wunused -Wunused-parameter -Wunused-function > -Wunused-value -Wmissing-prototypes -Wmissing-declarations > -Wdeclaration-after-statement -Wold-style-definition -fno-builtin-strlen > -finline-limit=0 -fomit-frame-pointer -ffunction-sections -fdata-sections > -fno-guess-branch-probability -funsigned-char -static-libgcc > -falign-functions=1 -falign-jumps=1 -falign-labels=1 -falign-loops=1 -Os > -I/opt/mpc8250/tools/ppc_6xx/usr/include/ > -L/opt/mpc8250/tools/ppc_6xx/usr/lib/ -static -nostdlib > -L/opt/mpc8250/tools/ppc_6xx/usr/lib/ -o busybox_unstripped > -Wl,--start-group applets/built-in.o archival/lib.a > archival/libunarchive/lib.a console-tools/lib.a coreutils/lib.a > coreutils/libcoreutils/lib.a debianutils/lib.a e2fsprogs/lib.a editors/lib.a > findutils/lib.a init/lib.a libbb/lib.a libpwdgrp/lib.a loginutils/lib.a > mailutils/lib.a miscutils/lib.a modutils/lib.a networking/lib.a > networking/libiproute/lib.a networking/udhcp/lib.a printutils/lib.a > procps/lib.a runit/lib.a selinux/lib.a shell/lib.a sysklogd/lib.a > util-linux/lib.a util-linux/volume_id/lib.a archival/built-in.o > archival/libunarchive/built-in.o console-tools/built-in.o > coreutils/built-in.o coreutils/libcoreutils/built-in.o > debianutils/built-in.o e2fsprogs/built-in.o editors/built-in.o > findutils/built-in.o init/built-in.o libbb/built-in.o libpwdgrp/built-in.o > loginutils/built-in.o mailutils/built-in.o miscutils/built-in.o > modutils/built-in.o networking/built-in.o networking/libiproute/built-in.o > networking/udhcp/built-in.o printutils/built-in.o procps/built-in.o > runit/built-in.o selinux/built-in.o shell/built-in.o sysklogd/built-in.o > util-linux/built-in.o util-linux/volume_id/built-in.o -Wl,--end-group > -Wl,--start-group -lcrypt -lm -Wl,--end-group > ========== > /opt/mpc8250/tools/usr/bin/../lib/gcc/powerpc-linux/4.2.2/../../../../powerpc-linux/bin/ld: > cannot find -lcrypt > collect2: ld returned 1 exit status > make: *** [busybox_unstripped] Error 1 > > It seems you toolchian dosen't contain libcrypt.you can compile it into > your toolchain and try again. > > Also tried: > make ARCH=powerpc CROSS=powerpc-linux- > --include-dir=/opt/mpc8250/tools/ppc_6xx/usr/include/ > PREFIX=/home/user/target/mpc8250/rootfs > LINK busybox_unstripped > Trying libraries: crypt m > Failed: -Wl,--start-group -lcrypt -lm -Wl,--end-group > Output of: > powerpc-linux-gcc -Wall -Wshadow -Wwrite-strings -Wundef > -Wstrict-prototypes -Wunused -Wunused-parameter -Wunused-function > -Wunused-value -Wmissing-prototypes -Wmissing-declarations > -Wdeclaration-after-statement -Wold-style-definition -fno-builtin-strlen > -finline-limit=0 -fomit-frame-pointer -ffunction-sections -fdata-sections > -fno-guess-branch-probability -funsigned-char -static-libgcc > -falign-functions=1 -falign-jumps=1 -falign-labels=1 -falign-loops=1 -Os > -I/opt/mpc8250/tools/ppc_6xx/usr/include/ > -L/opt/mpc8250/tools/ppc_6xx/usr/lib/ -static -nostdlib > -L/opt/mpc8250/tools/ppc_6xx/usr/lib/ -o busybox_unstripped > -Wl,--start-group applets/built-in.o archival/lib.a > archival/libunarchive/lib.a console-tools/lib.a coreutils/lib.a > coreutils/libcoreutils/lib.a debianutils/lib.a e2fsprogs/lib.a editors/lib.a > findutils/lib.a init/lib.a libbb/lib.a libpwdgrp/lib.a loginutils/lib.a > mailutils/lib.a miscutils/lib.a modutils/lib.a networking/lib.a > networking/libiproute/lib.a networking/udhcp/lib.a printutils/lib.a > procps/lib.a runit/lib.a selinux/lib.a shell/lib.a sysklogd/lib.a > util-linux/lib.a util-linux/volume_id/lib.a archival/built-in.o > archival/libunarchive/built-in.o console-tools/built-in.o > coreutils/built-in.o coreutils/libcoreutils/built-in.o > debianutils/built-in.o e2fsprogs/built-in.o editors/built-in.o > findutils/built-in.o init/built-in.o libbb/built-in.o libpwdgrp/built-in.o > loginutils/built-in.o mailutils/built-in.o miscutils/built-in.o > modutils/built-in.o networking/built-in.o networking/libiproute/built-in.o > networking/udhcp/built-in.o printutils/built-in.o procps/built-in.o > runit/built-in.o selinux/built-in.o shell/built-in.o sysklogd/built-in.o > util-linux/built-in.o util-linux/volume_id/built-in.o -Wl,--end-group > -Wl,--start-group -lcrypt -lm -Wl,--end-group > ========== > /opt/mpc8250/tools/usr/bin/../lib/gcc/powerpc-linux/4.2.2/../../../../powerpc-linux/bin/ld: > cannot find -lcrypt > collect2: ld returned 1 exit status > make: *** [busybox_unstripped] Error 1 > > > Any clues as to why this happens? > > Thanks & Regards, > D.Giriprasad > > > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies at kernelnewbies.org > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > -------------- next part -------------- An HTML attachment was scrubbed... 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* Busybox for powerpc doesnt compile 2011-01-27 10:11 ` yy Hong @ 2011-01-27 13:47 ` Anuz Pratap Singh Tomar 2011-01-29 5:50 ` Giriprasad Deviprasad 2011-01-30 13:23 ` Giriprasad Deviprasad 2 siblings, 0 replies; 24+ messages in thread From: Anuz Pratap Singh Tomar @ 2011-01-27 13:47 UTC (permalink / raw) To: kernelnewbies On Thu, Jan 27, 2011 at 10:11 AM, yy Hong <yaanhyy@gmail.com> wrote: > > > 2011/1/27 Giriprasad Deviprasad <g_pr21@yahoo.in> > >> Hi All, >> >> I am trying to compile busybox-1.17.1 for mpc8250 based powerpc >> architecture. My settings are as : >> >> export LDFLAGS="-nostdlib -L/opt/mpc8250/tools/ppc_6xx/usr/lib/" >> export LIBRARY_PATH=/opt/mpc8250/tools/ppc_6xx/usr/lib/ >> >> echo $PATH >> >> /usr/lib/qt-3.3/bin:/usr/kerberos/sbin:/usr/kerberos/bin:/usr/lib/ccache:/opt/mpc8250/tools/usr/bin/:/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin:/root/bin >> >> I specified in menuconfig: >> CFLAGS as -I/opt/mpc8250/tools/ppc_6xx/usr/include/ >> -L/opt/mpc8250/tools/ppc_6xx/usr/lib/ >> >> make ARCH=powerpc CROSS_COMPILE=powerpc-linux- >> --include-dir=/opt/mpc8250/tools/ppc_6xx/usr/include/ >> PREFIX=/home/user/target/mpc8250/rootfs >> LD applets/built-in.o >> LINK busybox_unstripped >> Trying libraries: crypt m >> Failed: -Wl,--start-group -lcrypt -lm -Wl,--end-group >> Output of: >> powerpc-linux-gcc -Wall -Wshadow -Wwrite-strings -Wundef >> -Wstrict-prototypes -Wunused -Wunused-parameter -Wunused-function >> -Wunused-value -Wmissing-prototypes -Wmissing-declarations >> -Wdeclaration-after-statement -Wold-style-definition -fno-builtin-strlen >> -finline-limit=0 -fomit-frame-pointer -ffunction-sections -fdata-sections >> -fno-guess-branch-probability -funsigned-char -static-libgcc >> -falign-functions=1 -falign-jumps=1 -falign-labels=1 -falign-loops=1 -Os >> -I/opt/mpc8250/tools/ppc_6xx/usr/include/ >> -L/opt/mpc8250/tools/ppc_6xx/usr/lib/ -static -nostdlib >> -L/opt/mpc8250/tools/ppc_6xx/usr/lib/ -o busybox_unstripped >> -Wl,--start-group applets/built-in.o archival/lib.a >> archival/libunarchive/lib.a console-tools/lib.a coreutils/lib.a >> coreutils/libcoreutils/lib.a debianutils/lib.a e2fsprogs/lib.a editors/lib.a >> findutils/lib.a init/lib.a libbb/lib.a libpwdgrp/lib.a loginutils/lib.a >> mailutils/lib.a miscutils/lib.a modutils/lib.a networking/lib.a >> networking/libiproute/lib.a networking/udhcp/lib.a printutils/lib.a >> procps/lib.a runit/lib.a selinux/lib.a shell/lib.a sysklogd/lib.a >> util-linux/lib.a util-linux/volume_id/lib.a archival/built-in.o >> archival/libunarchive/built-in.o console-tools/built-in.o >> coreutils/built-in.o coreutils/libcoreutils/built-in.o >> debianutils/built-in.o e2fsprogs/built-in.o editors/built-in.o >> findutils/built-in.o init/built-in.o libbb/built-in.o libpwdgrp/built-in.o >> loginutils/built-in.o mailutils/built-in.o miscutils/built-in.o >> modutils/built-in.o networking/built-in.o networking/libiproute/built-in.o >> networking/udhcp/built-in.o printutils/built-in.o procps/built-in.o >> runit/built-in.o selinux/built-in.o shell/built-in.o sysklogd/built-in.o >> util-linux/built-in.o util-linux/volume_id/built-in.o -Wl,--end-group >> -Wl,--start-group -lcrypt -lm -Wl,--end-group >> ========== >> /opt/mpc8250/tools/usr/bin/../lib/gcc/powerpc-linux/4.2.2/../../../../powerpc-linux/bin/ld: >> cannot find -lcrypt >> collect2: ld returned 1 exit status >> make: *** [busybox_unstripped] Error 1 >> >> It seems you toolchian dosen't contain libcrypt.you can compile it into >> your toolchain and try again. >> >> >> Also tried: >> make ARCH=powerpc CROSS=powerpc-linux- >> --include-dir=/opt/mpc8250/tools/ppc_6xx/usr/include/ >> PREFIX=/home/user/target/mpc8250/rootfs >> LINK busybox_unstripped >> Trying libraries: crypt m >> Failed: -Wl,--start-group -lcrypt -lm -Wl,--end-group >> Output of: >> powerpc-linux-gcc -Wall -Wshadow -Wwrite-strings -Wundef >> -Wstrict-prototypes -Wunused -Wunused-parameter -Wunused-function >> -Wunused-value -Wmissing-prototypes -Wmissing-declarations >> -Wdeclaration-after-statement -Wold-style-definition -fno-builtin-strlen >> -finline-limit=0 -fomit-frame-pointer -ffunction-sections -fdata-sections >> -fno-guess-branch-probability -funsigned-char -static-libgcc >> -falign-functions=1 -falign-jumps=1 -falign-labels=1 -falign-loops=1 -Os >> -I/opt/mpc8250/tools/ppc_6xx/usr/include/ >> -L/opt/mpc8250/tools/ppc_6xx/usr/lib/ -static -nostdlib >> -L/opt/mpc8250/tools/ppc_6xx/usr/lib/ -o busybox_unstripped >> -Wl,--start-group applets/built-in.o archival/lib.a >> archival/libunarchive/lib.a console-tools/lib.a coreutils/lib.a >> coreutils/libcoreutils/lib.a debianutils/lib.a e2fsprogs/lib.a editors/lib.a >> findutils/lib.a init/lib.a libbb/lib.a libpwdgrp/lib.a loginutils/lib.a >> mailutils/lib.a miscutils/lib.a modutils/lib.a networking/lib.a >> networking/libiproute/lib.a networking/udhcp/lib.a printutils/lib.a >> procps/lib.a runit/lib.a selinux/lib.a shell/lib.a sysklogd/lib.a >> util-linux/lib.a util-linux/volume_id/lib.a archival/built-in.o >> archival/libunarchive/built-in.o console-tools/built-in.o >> coreutils/built-in.o coreutils/libcoreutils/built-in.o >> debianutils/built-in.o e2fsprogs/built-in.o editors/built-in.o >> findutils/built-in.o init/built-in.o libbb/built-in.o libpwdgrp/built-in.o >> loginutils/built-in.o mailutils/built-in.o miscutils/built-in.o >> modutils/built-in.o networking/built-in.o networking/libiproute/built-in.o >> networking/udhcp/built-in.o printutils/built-in.o procps/built-in.o >> runit/built-in.o selinux/built-in.o shell/built-in.o sysklogd/built-in.o >> util-linux/built-in.o util-linux/volume_id/built-in.o -Wl,--end-group >> -Wl,--start-group -lcrypt -lm -Wl,--end-group >> ========== >> /opt/mpc8250/tools/usr/bin/../lib/gcc/powerpc-linux/4.2.2/../../../../powerpc-linux/bin/ld: >> cannot find -lcrypt >> collect2: ld returned 1 exit status >> make: *** [busybox_unstripped] Error 1 >> >> >> Any clues as to why this happens? >> > Wrong mailing list, you should ask such question on busybox mailing list, besides this is a kernel related mailing list or gcc-powerpc mailing list. -------------- next part -------------- An HTML attachment was scrubbed... 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* Busybox for powerpc doesnt compile 2011-01-27 10:11 ` yy Hong 2011-01-27 13:47 ` Anuz Pratap Singh Tomar @ 2011-01-29 5:50 ` Giriprasad Deviprasad 2011-01-30 13:23 ` Giriprasad Deviprasad 2 siblings, 0 replies; 24+ messages in thread From: Giriprasad Deviprasad @ 2011-01-29 5:50 UTC (permalink / raw) To: kernelnewbies Hi, ?I am trying to install glibc for the busybox required libs: echo "libc_cv_forced_unwind=yes" > config.cache echo "libc_cv_c_cleanup=yes" >> config.cache export CFLAGS="-I /opt/mpc8250/tools/ppc_6xx/usr/include" ../glibc-2.8/configure --prefix=/opt/mpc8250/tools/ppc_6xx/glibc-2.8 --host=powerpc-linux --without-tls --without-cvs --disable-profile --disable-debug --disable-shared --enable-threads=no --with-headers=/opt/mpc8250/tools/ppc_6xx/usr/include/ --cache-file=config.cache checking for sys/types.h... yes checking for sys/stat.h... yes checking for stdlib.h... yes checking for string.h... yes checking for memory.h... yes checking for strings.h... yes checking for inttypes.h... yes checking for stdint.h... yes checking for unistd.h... yes checking for long double... yes checking size of long double... configure: error: cannot compute sizeof (long double) See `config.log' for more details. Any clues on why? Regards, D.Giriprasad --- On Thu, 27/1/11, yy Hong <yaanhyy@gmail.com> wrote: From: yy Hong <yaanhyy@gmail.com> Subject: Re: Busybox for powerpc doesnt compile To: "Giriprasad Deviprasad" <g_pr21@yahoo.in> Cc: Kernelnewbies at kernelnewbies.org Date: Thursday, 27 January, 2011, 10:11 AM 2011/1/27 Giriprasad Deviprasad <g_pr21@yahoo.in> Hi All, ?I am trying to compile busybox-1.17.1 for mpc8250 based powerpc architecture. My settings are as : export LDFLAGS="-nostdlib -L/opt/mpc8250/tools/ppc_6xx/usr/lib/" export LIBRARY_PATH=/opt/mpc8250/tools/ppc_6xx/usr/lib/ echo $PATH /usr/lib/qt-3.3/bin:/usr/kerberos/sbin:/usr/kerberos/bin:/usr/lib/ccache:/opt/mpc8250/tools/usr/bin/:/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin:/root/bin ?I specified in menuconfig: CFLAGS as -I/opt/mpc8250/tools/ppc_6xx/usr/include/ -L/opt/mpc8250/tools/ppc_6xx/usr/lib/ make ARCH=powerpc CROSS_COMPILE=powerpc-linux- --include-dir=/opt/mpc8250/tools/ppc_6xx/usr/include/ PREFIX=/home/user/target/mpc8250/rootfs ? LD????? applets/built-in.o ? LINK??? busybox_unstripped Trying libraries: crypt m Failed: -Wl,--start-group -lcrypt -lm -Wl,--end-group Output of: powerpc-linux-gcc -Wall -Wshadow -Wwrite-strings -Wundef -Wstrict-prototypes -Wunused -Wunused-parameter -Wunused-function -Wunused-value -Wmissing-prototypes -Wmissing-declarations -Wdeclaration-after-statement -Wold-style-definition -fno-builtin-strlen -finline-limit=0 -fomit-frame-pointer -ffunction-sections -fdata-sections -fno-guess-branch-probability -funsigned-char -static-libgcc -falign-functions=1 -falign-jumps=1 -falign-labels=1 -falign-loops=1 -Os -I/opt/mpc8250/tools/ppc_6xx/usr/include/ -L/opt/mpc8250/tools/ppc_6xx/usr/lib/ -static -nostdlib -L/opt/mpc8250/tools/ppc_6xx/usr/lib/ -o busybox_unstripped -Wl,--start-group applets/built-in.o archival/lib.a archival/libunarchive/lib.a console-tools/lib.a coreutils/lib.a coreutils/libcoreutils/lib.a debianutils/lib.a e2fsprogs/lib.a editors/lib.a findutils/lib.a init/lib.a libbb/lib.a libpwdgrp/lib.a loginutils/lib.a mailutils/lib.a miscutils/lib.a modutils/lib.a networking/lib.a networking/libiproute/lib.a networking/udhcp/lib.a printutils/lib.a procps/lib.a runit/lib.a selinux/lib.a shell/lib.a sysklogd/lib.a util-linux/lib.a util-linux/volume_id/lib.a archival/built-in.o archival/libunarchive/built-in.o console-tools/built-in.o coreutils/built-in.o coreutils/libcoreutils/built-in.o debianutils/built-in.o e2fsprogs/built-in.o editors/built-in.o findutils/built-in.o init/built-in.o libbb/built-in.o libpwdgrp/built-in.o loginutils/built-in.o mailutils/built-in.o miscutils/built-in.o modutils/built-in.o networking/built-in.o networking/libiproute/built-in.o networking/udhcp/built-in.o printutils/built-in.o procps/built-in.o runit/built-in.o selinux/built-in.o shell/built-in.o sysklogd/built-in.o util-linux/built-in.o util-linux/volume_id/built-in.o -Wl,--end-group -Wl,--start-group -lcrypt -lm -Wl,--end-group ========== /opt/mpc8250/tools/usr/bin/../lib/gcc/powerpc-linux/4.2.2/../../../../powerpc-linux/bin/ld: cannot find -lcrypt collect2: ld returned 1 exit status make: *** [busybox_unstripped] Error 1 It seems you toolchian dosen't contain libcrypt.you can compile it into your toolchain and try again. Also tried: make ARCH=powerpc CROSS=powerpc-linux- --include-dir=/opt/mpc8250/tools/ppc_6xx/usr/include/ PREFIX=/home/user/target/mpc8250/rootfs ? LINK??? busybox_unstripped Trying libraries: crypt m Failed: -Wl,--start-group -lcrypt -lm -Wl,--end-group Output of: powerpc-linux-gcc -Wall -Wshadow -Wwrite-strings -Wundef -Wstrict-prototypes -Wunused -Wunused-parameter -Wunused-function -Wunused-value -Wmissing-prototypes -Wmissing-declarations -Wdeclaration-after-statement -Wold-style-definition -fno-builtin-strlen -finline-limit=0 -fomit-frame-pointer -ffunction-sections -fdata-sections -fno-guess-branch-probability -funsigned-char -static-libgcc -falign-functions=1 -falign-jumps=1 -falign-labels=1 -falign-loops=1 -Os -I/opt/mpc8250/tools/ppc_6xx/usr/include/ -L/opt/mpc8250/tools/ppc_6xx/usr/lib/ -static -nostdlib -L/opt/mpc8250/tools/ppc_6xx/usr/lib/ -o busybox_unstripped -Wl,--start-group applets/built-in.o archival/lib.a archival/libunarchive/lib.a console-tools/lib.a coreutils/lib.a coreutils/libcoreutils/lib.a debianutils/lib.a e2fsprogs/lib.a editors/lib.a findutils/lib.a init/lib.a libbb/lib.a libpwdgrp/lib.a loginutils/lib.a mailutils/lib.a miscutils/lib.a modutils/lib.a networking/lib.a networking/libiproute/lib.a networking/udhcp/lib.a printutils/lib.a procps/lib.a runit/lib.a selinux/lib.a shell/lib.a sysklogd/lib.a util-linux/lib.a util-linux/volume_id/lib.a archival/built-in.o archival/libunarchive/built-in.o console-tools/built-in.o coreutils/built-in.o coreutils/libcoreutils/built-in.o debianutils/built-in.o e2fsprogs/built-in.o editors/built-in.o findutils/built-in.o init/built-in.o libbb/built-in.o libpwdgrp/built-in.o loginutils/built-in.o mailutils/built-in.o miscutils/built-in.o modutils/built-in.o networking/built-in.o networking/libiproute/built-in.o networking/udhcp/built-in.o printutils/built-in.o procps/built-in.o runit/built-in.o selinux/built-in.o shell/built-in.o sysklogd/built-in.o util-linux/built-in.o util-linux/volume_id/built-in.o -Wl,--end-group -Wl,--start-group -lcrypt -lm -Wl,--end-group ========== /opt/mpc8250/tools/usr/bin/../lib/gcc/powerpc-linux/4.2.2/../../../../powerpc-linux/bin/ld: cannot find -lcrypt collect2: ld returned 1 exit status make: *** [busybox_unstripped] Error 1 Any clues as to why this happens? Thanks & Regards, D.Giriprasad _______________________________________________ Kernelnewbies mailing list Kernelnewbies at kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies -----Inline Attachment Follows----- _______________________________________________ Kernelnewbies mailing list Kernelnewbies at kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20110129/b462bdb0/attachment-0001.html ^ permalink raw reply [flat|nested] 24+ messages in thread
* Busybox for powerpc doesnt compile 2011-01-27 10:11 ` yy Hong 2011-01-27 13:47 ` Anuz Pratap Singh Tomar 2011-01-29 5:50 ` Giriprasad Deviprasad @ 2011-01-30 13:23 ` Giriprasad Deviprasad 2 siblings, 0 replies; 24+ messages in thread From: Giriprasad Deviprasad @ 2011-01-30 13:23 UTC (permalink / raw) To: kernelnewbies Hi, ?Thanks for the details. Glibc configures, makes, and installs fine: ../glibc-2.9/configure --host=powerpc-linux --target=powerpc-linux- --prefix=/opt/mpc8250/tools/glibc2.9 --build=i686-pc-linux-gnu --with-headers=/opt/mpc8250/tools/ppc_6xx/usr/include/ --cache-file=config.cache Now, I try to compile busybox.1.17.1 as : ?make ARCH=powerpc CROSS_COMPILE=powerpc-linux- At the very end, errors as : Trying libraries: crypt m ?Library crypt is not needed, excluding it ?Library m is not needed, excluding it Final link with: <none> powerpc-linux-strip: there are no sections to be copied! make: *** [busybox] Error 1 .config: CONFIG_EXTRA_CFLAGS="-I/opt/mpc8250/tools/ppc_6xx/usr/include/ -L/opt/mpc8250/tools/ppc_6xx/usr/lib/ -L/opt/mpc8250/tools/glibc2.9/opt/mpc8250/tools/glibc2.9/lib -nostdlib" Can any please suggest why? Thanks & Regards, D.Giriprasad --- On Thu, 27/1/11, yy Hong <yaanhyy@gmail.com> wrote: From: yy Hong <yaanhyy@gmail.com> Subject: Re: Busybox for powerpc doesnt compile To: "Giriprasad Deviprasad" <g_pr21@yahoo.in> Cc: Kernelnewbies at kernelnewbies.org Date: Thursday, 27 January, 2011, 10:11 AM 2011/1/27 Giriprasad Deviprasad <g_pr21@yahoo.in> Hi All, ?I am trying to compile busybox-1.17.1 for mpc8250 based powerpc architecture. My settings are as : export LDFLAGS="-nostdlib -L/opt/mpc8250/tools/ppc_6xx/usr/lib/" export LIBRARY_PATH=/opt/mpc8250/tools/ppc_6xx/usr/lib/ echo $PATH /usr/lib/qt-3.3/bin:/usr/kerberos/sbin:/usr/kerberos/bin:/usr/lib/ccache:/opt/mpc8250/tools/usr/bin/:/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin:/root/bin ?I specified in menuconfig: CFLAGS as -I/opt/mpc8250/tools/ppc_6xx/usr/include/ -L/opt/mpc8250/tools/ppc_6xx/usr/lib/ make ARCH=powerpc CROSS_COMPILE=powerpc-linux- --include-dir=/opt/mpc8250/tools/ppc_6xx/usr/include/ PREFIX=/home/user/target/mpc8250/rootfs ? LD????? applets/built-in.o ? LINK??? busybox_unstripped Trying libraries: crypt m Failed: -Wl,--start-group -lcrypt -lm -Wl,--end-group Output of: powerpc-linux-gcc -Wall -Wshadow -Wwrite-strings -Wundef -Wstrict-prototypes -Wunused -Wunused-parameter -Wunused-function -Wunused-value -Wmissing-prototypes -Wmissing-declarations -Wdeclaration-after-statement -Wold-style-definition -fno-builtin-strlen -finline-limit=0 -fomit-frame-pointer -ffunction-sections -fdata-sections -fno-guess-branch-probability -funsigned-char -static-libgcc -falign-functions=1 -falign-jumps=1 -falign-labels=1 -falign-loops=1 -Os -I/opt/mpc8250/tools/ppc_6xx/usr/include/ -L/opt/mpc8250/tools/ppc_6xx/usr/lib/ -static -nostdlib -L/opt/mpc8250/tools/ppc_6xx/usr/lib/ -o busybox_unstripped -Wl,--start-group applets/built-in.o archival/lib.a archival/libunarchive/lib.a console-tools/lib.a coreutils/lib.a coreutils/libcoreutils/lib.a debianutils/lib.a e2fsprogs/lib.a editors/lib.a findutils/lib.a init/lib.a libbb/lib.a libpwdgrp/lib.a loginutils/lib.a mailutils/lib.a miscutils/lib.a modutils/lib.a networking/lib.a networking/libiproute/lib.a networking/udhcp/lib.a printutils/lib.a procps/lib.a runit/lib.a selinux/lib.a shell/lib.a sysklogd/lib.a util-linux/lib.a util-linux/volume_id/lib.a archival/built-in.o archival/libunarchive/built-in.o console-tools/built-in.o coreutils/built-in.o coreutils/libcoreutils/built-in.o debianutils/built-in.o e2fsprogs/built-in.o editors/built-in.o findutils/built-in.o init/built-in.o libbb/built-in.o libpwdgrp/built-in.o loginutils/built-in.o mailutils/built-in.o miscutils/built-in.o modutils/built-in.o networking/built-in.o networking/libiproute/built-in.o networking/udhcp/built-in.o printutils/built-in.o procps/built-in.o runit/built-in.o selinux/built-in.o shell/built-in.o sysklogd/built-in.o util-linux/built-in.o util-linux/volume_id/built-in.o -Wl,--end-group -Wl,--start-group -lcrypt -lm -Wl,--end-group ========== /opt/mpc8250/tools/usr/bin/../lib/gcc/powerpc-linux/4.2.2/../../../../powerpc-linux/bin/ld: cannot find -lcrypt collect2: ld returned 1 exit status make: *** [busybox_unstripped] Error 1 It seems you toolchian dosen't contain libcrypt.you can compile it into your toolchain and try again. Also tried: make ARCH=powerpc CROSS=powerpc-linux- --include-dir=/opt/mpc8250/tools/ppc_6xx/usr/include/ PREFIX=/home/user/target/mpc8250/rootfs ? LINK??? busybox_unstripped Trying libraries: crypt m Failed: -Wl,--start-group -lcrypt -lm -Wl,--end-group Output of: powerpc-linux-gcc -Wall -Wshadow -Wwrite-strings -Wundef -Wstrict-prototypes -Wunused -Wunused-parameter -Wunused-function -Wunused-value -Wmissing-prototypes -Wmissing-declarations -Wdeclaration-after-statement -Wold-style-definition -fno-builtin-strlen -finline-limit=0 -fomit-frame-pointer -ffunction-sections -fdata-sections -fno-guess-branch-probability -funsigned-char -static-libgcc -falign-functions=1 -falign-jumps=1 -falign-labels=1 -falign-loops=1 -Os -I/opt/mpc8250/tools/ppc_6xx/usr/include/ -L/opt/mpc8250/tools/ppc_6xx/usr/lib/ -static -nostdlib -L/opt/mpc8250/tools/ppc_6xx/usr/lib/ -o busybox_unstripped -Wl,--start-group applets/built-in.o archival/lib.a archival/libunarchive/lib.a console-tools/lib.a coreutils/lib.a coreutils/libcoreutils/lib.a debianutils/lib.a e2fsprogs/lib.a editors/lib.a findutils/lib.a init/lib.a libbb/lib.a libpwdgrp/lib.a loginutils/lib.a mailutils/lib.a miscutils/lib.a modutils/lib.a networking/lib.a networking/libiproute/lib.a networking/udhcp/lib.a printutils/lib.a procps/lib.a runit/lib.a selinux/lib.a shell/lib.a sysklogd/lib.a util-linux/lib.a util-linux/volume_id/lib.a archival/built-in.o archival/libunarchive/built-in.o console-tools/built-in.o coreutils/built-in.o coreutils/libcoreutils/built-in.o debianutils/built-in.o e2fsprogs/built-in.o editors/built-in.o findutils/built-in.o init/built-in.o libbb/built-in.o libpwdgrp/built-in.o loginutils/built-in.o mailutils/built-in.o miscutils/built-in.o modutils/built-in.o networking/built-in.o networking/libiproute/built-in.o networking/udhcp/built-in.o printutils/built-in.o procps/built-in.o runit/built-in.o selinux/built-in.o shell/built-in.o sysklogd/built-in.o util-linux/built-in.o util-linux/volume_id/built-in.o -Wl,--end-group -Wl,--start-group -lcrypt -lm -Wl,--end-group ========== /opt/mpc8250/tools/usr/bin/../lib/gcc/powerpc-linux/4.2.2/../../../../powerpc-linux/bin/ld: cannot find -lcrypt collect2: ld returned 1 exit status make: *** [busybox_unstripped] Error 1 Any clues as to why this happens? Thanks & Regards, D.Giriprasad _______________________________________________ Kernelnewbies mailing list Kernelnewbies at kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies -----Inline Attachment Follows----- _______________________________________________ Kernelnewbies mailing list Kernelnewbies at kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20110130/1c8d4abb/attachment-0001.html ^ permalink raw reply [flat|nested] 24+ messages in thread
* How to identity processor architecture 2011-01-27 6:45 ` Mulyadi Santosa 2011-01-27 6:54 ` Enrico Granata @ 2011-01-27 7:07 ` prabhu 2011-01-27 7:13 ` Mulyadi Santosa 2011-01-27 19:27 ` mindentropy 2 siblings, 1 reply; 24+ messages in thread From: prabhu @ 2011-01-27 7:07 UTC (permalink / raw) To: kernelnewbies Hi Mulyadi, > On Thu, Jan 27, 2011 at 13:40, prabhu <prabhum@msys-tech.com> wrote: > >> No, because 32bit code will tell the datatype size and i think pointer >> variable depends on architecture. >> So 64 bit processor needs 64 address line to point the data location. So >> pointer variable needs to be 8 byte. >> > > Please don't top post and please use the new list address, ok? :) > Sure, Thanks for your reply. > IMO, I second your opinion. And as addition, I think it's worth to > check /proc/cpuinfo too in "address sizes" field > I am getting below output for /proc/cpuinfo . I hope *cpu family : 6 *means x86 family(32 bit processor). What if its 64 bit processor. ( I dont have system to check this.) processor : 0 vendor_id : GenuineIntel *cpu family : 6* model : 15 model name : Intel(R) Pentium(R) Dual CPU E2160 @ 1.80GHz stepping : 13 cpu MHz : 1200.000 cache size : 1024 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 2 apicid : 0 initial apicid : 0 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm lahf_lm bogomips : 3591.05 clflush size : 64 power management: processor : 1 vendor_id : GenuineIntel *cpu family : 6* model : 15 model name : Intel(R) Pentium(R) Dual CPU E2160 @ 1.80GHz stepping : 13 cpu MHz : 1200.000 cache size : 1024 KB physical id : 0 siblings : 2 core id : 1 cpu cores : 2 apicid : 1 initial apicid : 1 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm lahf_lm bogomips : 3590.97 clflush size : 64 power management: > NB: I was thinking, if in x64, it is operating in full 32 bit mode > (not hybrid one), it is supposed to yield 32 bit address too, right? > I'm sorry . I have no idea about this. Thanks, Prabhu ^ permalink raw reply [flat|nested] 24+ messages in thread
* How to identity processor architecture 2011-01-27 7:07 ` How to identity processor architecture prabhu @ 2011-01-27 7:13 ` Mulyadi Santosa 0 siblings, 0 replies; 24+ messages in thread From: Mulyadi Santosa @ 2011-01-27 7:13 UTC (permalink / raw) To: kernelnewbies Hi... On Thu, Jan 27, 2011 at 14:07, prabhu <prabhum@msys-tech.com> wrote: > I am getting below output for /proc/cpuinfo . I hope *cpu family : 6 *means > x86 family(32 bit processor). What if its 64 bit processor. ( I dont have > system to check this.) > > processor : 0 > vendor_id : GenuineIntel > *cpu family : 6* > model : 15 > model name : Intel(R) Pentium(R) Dual CPU E2160 @ 1.80GHz according to http://en.wikipedia.org/wiki/Pentium_Dual-Core, yours falls into Allendale core category, which is already using Intel 64 technology. So, unless I am mistaken somewhere, yours is x64. The problem is, is it working in hybrid 64/32 bit or in full 32 bit ....? -- regards, Mulyadi Santosa Freelance Linux trainer and consultant blog: the-hydra.blogspot.com training: mulyaditraining.blogspot.com ^ permalink raw reply [flat|nested] 24+ messages in thread
* How to identity processor architecture 2011-01-27 6:45 ` Mulyadi Santosa 2011-01-27 6:54 ` Enrico Granata 2011-01-27 7:07 ` How to identity processor architecture prabhu @ 2011-01-27 19:27 ` mindentropy 2011-01-27 20:01 ` Denis Kirjanov 2 siblings, 1 reply; 24+ messages in thread From: mindentropy @ 2011-01-27 19:27 UTC (permalink / raw) To: kernelnewbies On Thursday 27 Jan 2011 12:15:47 pm Mulyadi Santosa wrote: > On Thu, Jan 27, 2011 at 13:40, prabhu <prabhum@msys-tech.com> wrote: > > No, because 32bit code will tell the datatype size and i think pointer > > variable depends on architecture. > > So 64 bit processor needs 64 address line to point the data location. So > > pointer variable needs to be 8 byte. > > Please don't top post and please use the new list address, ok? :) > > IMO, I second your opinion. And as addition, I think it's worth to > check /proc/cpuinfo too in "address sizes" field > > NB: I was thinking, if in x64, it is operating in full 32 bit mode > (not hybrid one), it is supposed to yield 32 bit address too, right? Why not simply use CPUID ? ^ permalink raw reply [flat|nested] 24+ messages in thread
* How to identity processor architecture 2011-01-27 19:27 ` mindentropy @ 2011-01-27 20:01 ` Denis Kirjanov 0 siblings, 0 replies; 24+ messages in thread From: Denis Kirjanov @ 2011-01-27 20:01 UTC (permalink / raw) To: kernelnewbies On Thu, Jan 27, 2011 at 10:27 PM, mindentropy <mindentropy@gmail.com> wrote: > On Thursday 27 Jan 2011 12:15:47 pm Mulyadi Santosa wrote: >> On Thu, Jan 27, 2011 at 13:40, prabhu <prabhum@msys-tech.com> wrote: >> > No, because 32bit code will tell the datatype size and i think pointer >> > variable depends on architecture. >> > So 64 bit processor needs 64 address line to point the data location. So >> > pointer variable needs to be 8 byte. >> >> Please don't top post and please use the new list address, ok? :) >> >> IMO, I second your opinion. And as addition, I think it's worth to >> check /proc/cpuinfo too ?in "address sizes" field >> >> NB: I was thinking, if in x64, it is operating in full 32 bit mode >> (not hybrid one), it is supposed to yield 32 bit address too, right? > Why not simply use CPUID ? In this case solution is not portable and uses arch specific methods. I think most 64-bit systems today use LP64 data model. > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies at kernelnewbies.org > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > -- Regards, Denis ^ permalink raw reply [flat|nested] 24+ messages in thread
end of thread, other threads:[~2011-01-30 13:23 UTC | newest] Thread overview: 24+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2011-01-27 6:07 How to identity processor architecture prabhu 2011-01-27 6:26 ` Enrico Granata 2011-01-27 6:31 ` arun kumar 2011-01-27 6:40 ` prabhu 2011-01-27 6:45 ` Mulyadi Santosa 2011-01-27 6:54 ` Enrico Granata 2011-01-27 7:15 ` dharmvir kumar 2011-01-27 7:24 ` Mandeep Sandhu 2011-01-27 8:20 ` prabhu 2011-01-27 8:22 ` Enrico Granata 2011-01-27 9:53 ` prabhu 2011-01-27 11:15 ` Henry Gebhardt 2011-01-27 11:32 ` Thirugnanam Balamurugan 2011-01-27 11:44 ` Pravin Shedage 2011-01-27 12:33 ` prabhu 2011-01-27 9:23 ` Busybox for powerpc doesnt compile Giriprasad Deviprasad 2011-01-27 10:11 ` yy Hong 2011-01-27 13:47 ` Anuz Pratap Singh Tomar 2011-01-29 5:50 ` Giriprasad Deviprasad 2011-01-30 13:23 ` Giriprasad Deviprasad 2011-01-27 7:07 ` How to identity processor architecture prabhu 2011-01-27 7:13 ` Mulyadi Santosa 2011-01-27 19:27 ` mindentropy 2011-01-27 20:01 ` Denis Kirjanov
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