HOWTO: Kernel compilation

[melkor12]

Add -fno-stack-protector to CFLAGS

How do I do that?
Has anyone tried that?

thanks

[garba]

How do I do that?
Has anyone tried that?

thanks

that's an "environment variable", see "export" in the man pages

[Megatog615]

Can somebody update the main tutorial on the first page? This seems like the only kernel compilation tutorial here and it is horribly outdated.

[thor918]

and what if your new kernel boot's up just fine, but the screen is black?

[king_arthur]

Hi there everybody,

looks like linux-tree is gone a long time ago.

What is the replacement for it?


/P

[phoenixjim]

I believe that the replacement for linux-tree is linux-source. That's what I used.

Jim

[cborga1985]

more up to date kernel howto http://ubuntuforums.org/showthread.php?t=311158

[sudhakar.sah]

Hi


I am trying to work on linux device drivers so i first tried to compile my kernel
these are the steps i followed
1. downloaded latest kernel
2. copied to /usr/src
3. un tar to the same dir
4. inside the directory typed make menuconfig
but at this stage i am getting lot of errors
i dont know how to counter this one becoz lat time i did the same thing with Cent OS and it got compiled
Please tell me where i am wrong


Sudhakar

[Icarosaurus]

In Ubuntu Feisty, for getting the latest Ubuntu patched kernel, you should write:

sudo apt-get install linux-source

linux-tree doesn't work for me too.
I think the howto should be fixed.

[i.nihilist]

I have downloaded the kernel versiosn 2.6.6 on my ubuntu 7.04 desktop edition
And unzipped the file into /usr/src/

also made the link as suggested in the HowTo

And then when i do cd linux
and then do make menuconfig

i'm getting the following errors..!!!

root@vikram-laptop:/usr/src/linux# make menuconfig
HOSTCC scripts/basic/fixdep
scripts/basic/fixdep.c:97:23: error: sys/types.h: No such file or directory
scripts/basic/fixdep.c:98:22: error: sys/stat.h: No such file or directory
scripts/basic/fixdep.c:99:22: error: sys/mman.h: No such file or directory
scripts/basic/fixdep.c:100:20: error: unistd.h: No such file or directory
scripts/basic/fixdep.c:101:19: error: fcntl.h: No such file or directory
scripts/basic/fixdep.c:102:20: error: string.h: No such file or directory
scripts/basic/fixdep.c:103:20: error: stdlib.h: No such file or directory
scripts/basic/fixdep.c:104:19: error: stdio.h: No such file or directory
In file included from /usr/lib/gcc/i486-linux-gnu/4.1.2/include/syslimits.h:7,
from /usr/lib/gcc/i486-linux-gnu/4.1.2/include/limits.h:11,
from scripts/basic/fixdep.c:105:
/usr/lib/gcc/i486-linux-gnu/4.1.2/include/limits.h:122:61: error: limits.h: No such file or directory
scripts/basic/fixdep.c:106:19: error: ctype.h: No such file or directory
scripts/basic/fixdep.c:107:24: error: netinet/in.h: No such file or directory
scripts/basic/fixdep.c: In function 'usage':
scripts/basic/fixdep.c:121: warning: implicit declaration of function 'fprintf'
scripts/basic/fixdep.c:121: warning: incompatible implicit declaration of built-in function 'fprintf'
scripts/basic/fixdep.c:121: error: 'stderr' undeclared (first use in this function)
scripts/basic/fixdep.c:121: error: (Each undeclared identifier is reported only once
scripts/basic/fixdep.c:121: error: for each function it appears in.)
scripts/basic/fixdep.c:122: warning: implicit declaration of function 'exit'
scripts/basic/fixdep.c:122: warning: incompatible implicit declaration of built-in function 'exit'
scripts/basic/fixdep.c: In function 'print_cmdline':
scripts/basic/fixdep.c:127: warning: implicit declaration of function 'printf'
scripts/basic/fixdep.c:127: warning: incompatible implicit declaration of built-in function 'printf'
scripts/basic/fixdep.c: At top level:
scripts/basic/fixdep.c:130: error: 'NULL' undeclared here (not in a function)
scripts/basic/fixdep.c: In function 'grow_config':
scripts/basic/fixdep.c:143: warning: implicit declaration of function 'realloc'
scripts/basic/fixdep.c:143: warning: assignment makes pointer from integer without a cast
scripts/basic/fixdep.c:145: warning: implicit declaration of function 'perror'
scripts/basic/fixdep.c:145: warning: incompatible implicit declaration of built-in function 'exit'
scripts/basic/fixdep.c: In function 'is_defined_config':
scripts/basic/fixdep.c:161: warning: implicit declaration of function 'memcmp'
scripts/basic/fixdep.c: In function 'define_config':
scripts/basic/fixdep.c:174: warning: implicit declaration of function 'memcpy'
scripts/basic/fixdep.c:174: warning: incompatible implicit declaration of built-in function 'memcpy'
scripts/basic/fixdep.c: In function 'use_config':
scripts/basic/fixdep.c:193: error: 'PATH_MAX' undeclared (first use in this function)
scripts/basic/fixdep.c:201: warning: incompatible implicit declaration of built-in function 'memcpy'
scripts/basic/fixdep.c:207: warning: implicit declaration of function 'tolower'
scripts/basic/fixdep.c:209: warning: incompatible implicit declaration of built-in function 'printf'
scripts/basic/fixdep.c:193: warning: unused variable 's'
scripts/basic/fixdep.c: At top level:
scripts/basic/fixdep.c:212: error: expected declaration specifiers or '...' before 'size_t'
scripts/basic/fixdep.c: In function 'parse_config_file':
scripts/basic/fixdep.c:214: error: 'len' undeclared (first use in this function)
scripts/basic/fixdep.c:220: warning: implicit declaration of function 'ntohl'
scripts/basic/fixdep.c:231: warning: implicit declaration of function 'isalnum'
scripts/basic/fixdep.c: In function 'strrcmp':
scripts/basic/fixdep.c:244: warning: implicit declaration of function 'strlen'
scripts/basic/fixdep.c:244: warning: incompatible implicit declaration of built-in function 'strlen'
scripts/basic/fixdep.c: In function 'do_config_file':
scripts/basic/fixdep.c:255: error: storage size of 'st' isn't known
scripts/basic/fixdep.c:259: warning: implicit declaration of function 'open'
scripts/basic/fixdep.c:259: error: 'O_RDONLY' undeclared (first use in this function)
scripts/basic/fixdep.c:261: warning: incompatible implicit declaration of built-in function 'fprintf'
scripts/basic/fixdep.c:261: error: 'stderr' undeclared (first use in this function)
scripts/basic/fixdep.c:263: warning: incompatible implicit declaration of built-in function 'exit'
scripts/basic/fixdep.c:265: warning: implicit declaration of function 'fstat'
scripts/basic/fixdep.c:267: warning: implicit declaration of function 'close'
scripts/basic/fixdep.c:270: warning: implicit declaration of function 'mmap'
scripts/basic/fixdep.c:270: error: 'PROT_READ' undeclared (first use in this function)
scripts/basic/fixdep.c:270: error: 'MAP_PRIVATE' undeclared (first use in this function)
scripts/basic/fixdep.c:270: warning: assignment makes pointer from integer without a cast
scripts/basic/fixdep.c:277: error: too many arguments to function 'parse_config_file'
scripts/basic/fixdep.c:279: warning: implicit declaration of function 'munmap'
scripts/basic/fixdep.c:255: warning: unused variable 'st'
scripts/basic/fixdep.c: At top level:
scripts/basic/fixdep.c:284: error: expected declaration specifiers or '...' before 'size_t'
scripts/basic/fixdep.c: In function 'parse_dep_file':
scripts/basic/fixdep.c:287: error: 'len' undeclared (first use in this function)
scripts/basic/fixdep.c:289: error: 'PATH_MAX' undeclared (first use in this function)
scripts/basic/fixdep.c:291: warning: implicit declaration of function 'strchr'
scripts/basic/fixdep.c:291: warning: incompatible implicit declaration of built-in function 'strchr'
scripts/basic/fixdep.c:293: warning: incompatible implicit declaration of built-in function 'fprintf'
scripts/basic/fixdep.c:293: error: 'stderr' undeclared (first use in this function)
scripts/basic/fixdep.c:294: warning: incompatible implicit declaration of built-in function 'exit'
scripts/basic/fixdep.c:296: warning: incompatible implicit declaration of built-in function 'memcpy'
scripts/basic/fixdep.c:297: warning: incompatible implicit declaration of built-in function 'printf'
scripts/basic/fixdep.c:289: warning: unused variable 's'
scripts/basic/fixdep.c: In function 'print_deps':
scripts/basic/fixdep.c:325: error: storage size of 'st' isn't known
scripts/basic/fixdep.c:329: error: 'O_RDONLY' undeclared (first use in this function)
scripts/basic/fixdep.c:331: warning: incompatible implicit declaration of built-in function 'fprintf'
scripts/basic/fixdep.c:331: error: 'stderr' undeclared (first use in this function)
scripts/basic/fixdep.c:333: warning: incompatible implicit declaration of built-in function 'exit'
scripts/basic/fixdep.c:337: warning: incompatible implicit declaration of built-in function 'fprintf'
scripts/basic/fixdep.c:341: error: 'PROT_READ' undeclared (first use in this function)
scripts/basic/fixdep.c:341: error: 'MAP_PRIVATE' undeclared (first use in this function)
scripts/basic/fixdep.c:341: warning: assignment makes pointer from integer without a cast
scripts/basic/fixdep.c:348: error: too many arguments to function 'parse_dep_file'
scripts/basic/fixdep.c:325: warning: unused variable 'st'
scripts/basic/fixdep.c: In function 'traps':
scripts/basic/fixdep.c:360: warning: incompatible implicit declaration of built-in function 'fprintf'
scripts/basic/fixdep.c:360: error: 'stderr' undeclared (first use in this function)
scripts/basic/fixdep.c:362: warning: incompatible implicit declaration of built-in function 'exit'
make[1]: *** [scripts/basic/fixdep] Error 1
make: *** [scripts_basic] Error 2


Can ayone tell me what is wrong?