Outputs generated by crosstool-ng unusable

[zombiepantslol]

Hello,
I've been trying to get a working cross-compiler toolchain but when I'm done compiling the toolchain and attempt to compile my own little "Hello world" program using the cross-compiler, I can't execute the output file neither on my i686 PC (which is just fine) nor on my BeagleBoard.

I followed the official DistCC Cross-Compiling Guide, used the armv7 config (as suggested) and adjusted the path to the latest kernel sources, so I really can't spot an error there. I even got distcc to work, but its compilation results don't seem usable on my board.

Under normal circumstances, I wouldn't mind compiling packages on the board, but I need to compile a custom kernel which takes roughly 14 hours to compile on the BeagleBoard. Does anyone have an idea what's going wrong here? Do I perhaps need a special config file for crosstool-ng to get this working?

Thanks in advance,

[kmihelich]

Are you getting errors during compilation or linking?

[zombiepantslol]

Nope, no errors. I just updated my crosstool-ng configuration so I can use the latest versions of all tools used but still no success.
My test program looks like this, actually nothing special:

$this->bbcode_second_pass_code('', '#include <stdio.h>

int main()
{
printf("Hello world!\n");
}')

And yet when I tried to execute the new binary, I get this error:

$this->bbcode_second_pass_quote('', '[')root@beagleboard ~]# ./test
-bash: ./test: cannot execute binary file
[root@beagleboard ~]#

[kmihelich]

What does `file test` say?

When compiled on my PC (i686):
$this->bbcode_second_pass_quote('', '[')chham@badthing ~]$ file test
test: ELF 32-bit LSB relocatable, Intel 80386, version 1 (SYSV), not stripped

[kmihelich]

Something is off.. is your beagleboard install up to date, and are all packages of the group 'base-devel' installed?

[kmihelich]

For comparison, here is your example built on my Pandaboard. I know the whole distcc/ct-ng setup works, because I wrote the book on it and use it daily to build hundreds of packages across both architectures we support. Basically it boils down to something is not being done correctly by you.

$this->bbcode_second_pass_code('', 'root@platinum:~# cat test.c
#include <stdio.h>

int main()
{
printf("Hello world!\n");
}
root@platinum:~# distcc test.c -o test
root@platinum:~# file test
test: ELF 32-bit LSB executable, ARM, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.27, BuildID[sha1]=0xfc1e338c5e3c32b62820f6bfe8da4e17e9f81ff9, not stripped
root@platinum:~# ./test
Hello world!
root@platinum:~# readelf -A test
Attribute Section: aeabi
File Attributes
Tag_CPU_name: "7-A"
Tag_CPU_arch: v7
Tag_CPU_arch_profile: Application
Tag_ARM_ISA_use: Yes
Tag_THUMB_ISA_use: Thumb-2
Tag_FP_arch: VFPv3-D16
Tag_ABI_PCS_wchar_t: 4
Tag_ABI_FP_denormal: Needed
Tag_ABI_FP_exceptions: Needed
Tag_ABI_FP_number_model: IEEE 754
Tag_ABI_align_needed: 8-byte
Tag_ABI_align_preserved: 8-byte, except leaf SP
Tag_ABI_enum_size: int
Tag_ABI_HardFP_use: SP and DP
Tag_ABI_VFP_args: VFP registers
Tag_DIV_use: Not allowed')

[kmihelich]

$this->bbcode_second_pass_quote('zombiepantslol', '
')$this->bbcode_second_pass_quote('', '[')root@beagleboard ~]# file test
test: ELF 32-bit LSB relocatable, ARM, version 1 (SYSV), not stripped

[zombiepantslol]

Sounds reasonable, but where's the error? Could you please upload your crosstool's .config file?

My BeagleBoard and my PC are up-to-date, so I'm really starting to run out of ideas...

[kmihelich]

The error is that you're not linking the resultant object file into an executable, and the config on the main site is my config.