Running a linked C program

[bgs100]

For some reason I can't run a C compiled program that's not statically linked. I have no idea what to do. The program shows up in ls but if I try to run it it says no such file or directory. A statically compiled program will run fine, however. Help? :(

[jimi_hendrix]

please show the compile command you are using

[bgs100]

gcc -o hello hello.c

[jimi_hendrix]

and the file?

[bgs100]

Whoops
I deleted it
it just (was meant to) print hello world. Snova gave me the code.
GCC gave no errors when compiling

[jimi_hendrix]

try it again...see what happens if you do



int main()
{
return 0;
}

[monkeyking]

also try

ldd hello
or


readelf hello

[bgs100]

try it again...see what happens if you do



int main()
{
return 0;
}


> gcc -o hello hello.c
>./hello
bash: ./hello: No such file or directory

[bgs100]

also try

ldd hello
or


readelf hello


>ldd hello
/usr/bin/ldd: line 117: ./hello: No such file or directory
>readelf hello
Usage: readelf <option(s)> elf-file(s)
Display information about the contents of ELF format files
Options are:
-a --all Equivalent to: -h -l -S -s -r -d -V -A -I
-h --file-header Display the ELF file header
-l --program-headers Display the program headers
--segments An alias for --program-headers
-S --section-headers Display the sections' header
--sections An alias for --section-headers
-g --section-groups Display the section groups
-t --section-details Display the section details
-e --headers Equivalent to: -h -l -S
-s --syms Display the symbol table
--symbols An alias for --syms
-n --notes Display the core notes (if present)
-r --relocs Display the relocations (if present)
-u --unwind Display the unwind info (if present)
-d --dynamic Display the dynamic section (if present)
-V --version-info Display the version sections (if present)
-A --arch-specific Display architecture specific information (if any).
-c --archive-index Display the symbol/file index in an archive
-D --use-dynamic Use the dynamic section info when displaying symbols
-x --hex-dump=<number|name>
Dump the contents of section <number|name> as bytes
-p --string-dump=<number|name>
Dump the contents of section <number|name> as strings
-w[lLiaprmfFsoR] or
--debug-dump[=rawline,=decodedline,=info,=abbrev,=pubnames,=ara nges,=macro,=frames,=str,=loc,=Ranges]
Display the contents of DWARF2 debug sections
-I --histogram Display histogram of bucket list lengths
-W --wide Allow output width to exceed 80 characters
@<file> Read options from <file>
-H --help Display this information
-v --version Display the version number of readelf

[monkeyking]

try this one instead


readelf -h hello


but also


ls -lah hello

[bgs100]

try this one instead


readelf -h hello


but also


ls -lah hello


>readelf -h hello
ELF Header:
Magic: 7f 45 4c 46 01 01 01 00 00 00 00 00 00 00 00 00
Class: ELF32
Data: 2's complement, little endian
Version: 1 (current)
OS/ABI: UNIX - System V
ABI Version: 0
Type: EXEC (Executable file)
Machine: Intel 80386
Version: 0x1
Entry point address: 0x80482e0
Start of program headers: 52 (bytes into file)
Start of section headers: 5892 (bytes into file)
Flags: 0x0
Size of this header: 52 (bytes)
Size of program headers: 32 (bytes)
Number of program headers: 8
Size of section headers: 40 (bytes)
Number of section headers: 36
Section header string table index: 33
>ls -lah hello
-rwxr-xr-x 1 ian ian 8.8K 2009-02-19 21:46 hello

[bgs100]

bump

[monkeyking]

I thought you have solved it already.

please post the following.

Your .cpp file
and the commands you use to compile and run.

The subject of this thread is something about a linked program.
But is this just the hello world program?

[monkeyking]

you can check if something is wrong with your build system by using codepad
Try this link as a reference
http://codepad.org/9gEY0FTu

[T.J.]

Does it have execution permissions? You can make certain by:

chmod +x ./hello

Then run it by:

./hello