Linker issue while cross compiling for cortex-a8 device [duplicate] - linux

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Error during Cross-compiling C code with Dynamic libraries
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Closed 6 years ago.
I am using VAR-SOM-AM33 board and want to run sample code like hello world run on device and it gives -sh:./test:not found error
Toolchain used for compile code is gcc-linaro-arm-linux-gnueabihf-4.7-2013.03-20130313_linux.
Code is as below
#include <stdio.h>
int main(){
printf("hello world");
return 0;
}
for crosscompile file
arm-linux-gnueabihf-gcc test.c -march=armv7-a -marm -mthumb-interwork -mfloat-abi=hard -mfpu=neon -mtune=cortex-a8 -o test
output binary is shows as follows
test: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.31, BuildID[sha1]=2ce1c5b3d97dac2093fe2cd2d340cdaa9989923f, not stripped
After copy that file into hardware and run it shows following error
root#am335x-evm:~# ./test
-sh: ./test: not found
File permission also change by
root#am335x-evm:~# chmod +x test
but result shows same not found error.
Demo file which is running on hardware,its architecture as follows
root#am335x-evm:~# readelf -A /usr/bin/hello
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_VFP_arch: VFPv3
Tag_Advanced_SIMD_arch: NEONv1
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_align8_needed: Yes
Tag_ABI_align8_preserved: Yes, except leaf SP
Tag_ABI_enum_size: int
Tag_ABI_HardFP_use: SP and DP
and file which is cross compiled,its architecture as follows
root#am335x-evm:~# 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_VFP_arch: VFPv3
Tag_Advanced_SIMD_arch: NEONv1
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_align8_needed: Yes
Tag_ABI_align8_preserved: Yes, except leaf SP
Tag_ABI_enum_size: int
Tag_ABI_HardFP_use: SP and DP
Tag_ABI_VFP_args: VFP registers
Tag_CPU_unaligned_access: v6
Tag_unknown_44: 1 (0x1)
Also hardware cpuinfo is as follows
root#am335x-evm:~# cat /proc/cpuinfo
Processor : ARMv7 Processor rev 2 (v7l)
BogoMIPS : 718.02
Features : swp half thumb fastmult vfp edsp thumbee neon vfpv3 tls
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x3
CPU part : 0xc08
CPU revision : 2
Hardware : Variscite VAR-SOM-AM33
Revision : 0000
Serial : 0000000000000000
I have tried running ldd command on target device.
root#am335x-evm:~# ldd
-sh: ldd: not found
So I suspect that the issue is related to the linker.
If I simply compile the file, without linking it.
arm-linux-gnueabihf-gcc -mtune=cortex-a8 -march=armv7 -O -c test.c -o test
Now if I run this file I get this error.
root#am335x-evm:~# chmod +x test
root#am335x-evm:~# ./test
./test: line 1: syntax error: word unexpected (expecting ")")
please suggest how to resolve this.

Answer 1

Thanks for solution, I found error with linker.
existing file has linker ld-linux.so.3 and crosscompiled file has linker ld-linux-armhf.so.3
root#am335x-evm:/usr/bin# readelf -l hello
Elf file type is EXEC (Executable file)
Entry point 0x82fc
There are 8 program headers, starting at offset 52
Program Headers:
Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align
EXIDX 0x00044c 0x0000844c 0x0000844c 0x00008 0x00008 R 0x4
PHDR 0x000034 0x00008034 0x00008034 0x00100 0x00100 R E 0x4
INTERP 0x000134 0x00008134 0x00008134 0x00013 0x00013 R 0x1
[Requesting program interpreter: /lib/ld-linux.so.3]
crosscompiled file program header
root#am335x-evm:~# readelf -l test
Elf file type is EXEC (Executable file)
Entry point 0x82f9
There are 8 program headers, starting at offset 52
Program Headers:
Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align
EXIDX 0x000450 0x00008450 0x00008450 0x00008 0x00008 R 0x4
PHDR 0x000034 0x00008034 0x00008034 0x00100 0x00100 R E 0x4
INTERP 0x000134 0x00008134 0x00008134 0x00019 0x00019 R 0x1
[Requesting program interpreter: /lib/ld-linux-armhf.so.3]
after chang that linker program runs on target device.
root#am335x-evm:~# cd /lib/
root#am335x-evm:/lib# ls -l ld-linux.so.3
lrwxrwxrwx 1 1000 1000 12 Aug 7 2012 ld-linux.so.3 -> ld-2.12.2.so
root#am335x-evm:/lib# ln -s /li ld-2.12.2.so ld-linux-armhf.so.3
/lib/ /linuxrc
root#am335x-evm:/lib# ln -s /lib/ld-2.12.2.so ld-linux-armhf.so.3
root#am335x-evm:/lib# ldconfig
root#am335x-evm:/lib# cd
root#am335x-evm:~# ./test
hello worldroot#am335x-evm:~#