Cross Compile for ARM926EJ-Sid - gcc

Question

My ultimate goal is to compile rtorrent for my NAS which is a Synology DS107+. To familiarize myself with cross compiling, I wanted to compile a helloworld. This already turned out to be a big hurdle for a novice as I am.
Executing the program results in a Segmentation Fault. I used gcc-arm-none-eabi to compile it on Ubuntu x84_64.
What tools do I need to compile a program for the target? I also consulted "Cross compile from linux to ARM-ELF (ARM926EJ-S/MT7108)" and needed a workaround, because gcc complained that _exit is not declared.
Following, there is more detailed information:
/proc/cpuinfo
Processor : ARM926EJ-Sid(wb) rev 0 (v5l)
BogoMIPS : 499.71
Features : swp half thumb fastmult vfp edsp
CPU implementer : 0x41
CPU architecture: 5TEJ
CPU variant : 0x0
CPU part : 0x926
CPU revision : 0
Cache type : write-back
Cache clean : cp15 c7 ops
Cache lockdown : format C
Cache format : Harvard
I size : 32768
I assoc : 1
I line length : 32
I sets : 1024
D size : 32768
D assoc : 4
D line length : 32
D sets : 256
Hardware : MV-88fxx81
Revision : 0000
Serial : 0000000000000000
uname -a
Linux DiskStation 2.6.15 #1637 Sat May 4 05:59:19 CST 2013
armv5tejl GNU/Linux synology_88f5281_107+
dmesg (snippets from head that seem informative to me)
Linux version 2.6.15 (root#build2) (gcc version 3.4.3 (CSL 2005Q1B) (Marvell 2006Q3))
#1637 Sat May 4 05:59:19 CST 2013
CPU: ARM926EJ-Sid(wb) [41069260] revision 0 (ARMv5TEJ)
Machine: MV-88fxx81
...
Synology Hareware Version: DS107v20
Memory policy: ECC disabled, Data cache writeback
...
CPU0: D VIVT write-back cache
CPU0: I cache: 32768 bytes, associativity 1, 32 byte lines, 1024 sets
CPU0: D cache: 32768 bytes, associativity 4, 32 byte lines, 256 sets
readelf -h busybox (pulled from the device)
ELF Header:
Magic: 7f 45 4c 46 01 01 01 61 00 00 00 00 00 00 00 00
Class: ELF32
Data: 2's complement, little endian
Version: 1 (current)
OS/ABI: ARM
ABI Version: 0
Type: EXEC (Executable file)
Machine: ARM
Version: 0x1
Entry point address: 0x8de0
Start of program headers: 52 (bytes into file)
Start of section headers: 1319468 (bytes into file)
Flags: 0x602, has entry point, GNU EABI, software FP, VFP
Size of this header: 52 (bytes)
Size of program headers: 32 (bytes)
Number of program headers: 3
Size of section headers: 40 (bytes)
Number of section headers: 20
Section header string table index: 19
EDIT: Command line
I used the options -march=armv5te -mtune=arm926ej-s -mno-long-calls -msoft-float -static. I also experimented with leaving out march oder replaced mtune by mcpu. Without static, it says not found. Also tried -mfpu=vfp and armel binaries of Debian packages. For example busybox-static which runs fine on my HTC Desire S (armv7l), also results in segfault.
Using:
arm-linux-gnueabi-gcc → Segmentation fault
arm-none-eabi-gcc → Segmentation fault (or Illegal instruction, but rarely, can't tell when)
Haven't tried CodeBench, yet.
The code I tried is:
# include <stdlib.h>
void _exit (int x) { while (1) {} } // only needed for arm-none-eabi-gcc
int main (int argc, char* argv[]) {
return 47;
}