How to build sysroot for nohost?

[hkr2000]

Hi, there is a sysroot for tmsim, but how to develop a sysroot for
nohost?

[Guo Hongruan]

This afternoon, I will finish the PlatformDeveloperGettingStart in google
code tmlinux project in which I state this how to.

On Thu, 09 Oct 2008 08:51:12 +0800, hkr2000 <hkr...@gmail.com> wrote:

> Hi, there is a sysroot for tmsim, but how to develop a sysroot for
> nohost?
> >

--
Guo Hongruan, Embedded Linux Consultant
Mobile: +86-0-13484056007
Skype: camelguo
http://www.gulessoft.com

[hkr2000]

Does the uclibc and busybox is the right source that could be rebuild
the sysroot?

[Guo Hongruan]

The sysroot is built from linux kernel and uClibc. And do not need to
build busybox.

[hkr2000]

I know, but a root filesystem needs the busybox.
I try to compile the uclibc from your svn, but there are too many
errors

[hkr2000]

有个建议，可以把环境设置和编译写成一个脚本，通过脚本中路径修改完成编译器环境设置，这样就可以简单运行脚本完成编译了。

[Guo Hongruan]

I have updated the PlatformDeveloperGettingStart, in which I stated how to
build linux kernel, uClibc and generate sysroots. Of course, I just state
how to do them on ttisim. For nohost, I have never validated it, because I
have not hardware board.

[hkr2000]

I build it follow it, but come some error msg:
CC libcrypt/des.o "libcrypt/des.c", line 70: error: identifier
"u_char" is undefined static u_char inv_key_perm[64]; ^
"libcrypt/des.c", line 71: error: identifier "u_char" is undefined
static u_char inv_comp_perm[56]; ^
"libcrypt/des.c", line 72: error: identifier "u_char" is undefined
static u_char u_sbox[8][64]; ^
"libcrypt/des.c", line 73: error: identifier "u_char" is undefined
static u_char un_pbox[32]; ^
"libcrypt/des.c", line 74: error: identifier "u_int32_t" is undefined
static u_int32_t en_keysl[16], en_keysr[16]; ^

[hkr2000]

"libm/s_atan.c", line 86: error: floating constant is out of range
huge = 1.0e300;

[Guo Hongruan]

It is obvious that you have not set the include pathes correctly. Follow
PlatformDeveloperGettingStart
(http://code.google.com/p/tmlinux/wiki/PlatformDeveloperGettingStart)
instructions.

[hkr2000]

But ""libm/s_atan.c", line 86: error: floating constant is out of
range
huge = 1.0e300; " is why?

[Guo Hongruan]

I guess you compile uclibc using -fp32 option.

[freeoicq freeoicq]

yes, I see that in the Rules.make, there are CONFIG_FP32 and CONFIG_FP64, but I can not see anywhere define it?

2008/10/9 Guo Hongruan <came...@gmail.com>

[hkr2000]

能否在cygwin下提供编译个版本啊

On 10月9日, 下午1时02分, "freeoicq freeoicq" <hkr...@gmail.com> wrote:
> yes, I see that in the Rules.make, there are CONFIG_FP32 and CONFIG_FP64,
> but I can not see anywhere define it?
>

> 2008/10/9 Guo Hongruan <camel...@gmail.com>

[Guo Hongruan]

Ok, can not compile them under cygwin. Can you compile the standard Linux
kernel under cygwin?

[Guo Hongruan]

At first, you should define it at kernel configuration, then build the
kernel.

Then, you should set the linux kernel location when configuring uclibc.

Now, you can compile uclibc using correct float-point option.

On Thu, 09 Oct 2008 13:02:05 +0800, freeoicq freeoicq <hkr...@gmail.com>
wrote:

[freeoicq freeoicq]

Yes，the kernel now can be built。But the uClibc could not。

2008/10/9 Guo Hongruan <guo.ho...@gulessoft.com>