open64 and dragon tool

**SunitaChandrasekaran** · 02-06-2007

Hi
i am installing open64 tool from http://www.cs.uh.edu/~dragon.
and also the dragon tool

at one point of time when i give the command as
openf90- dragon -ipa -O2 BT.f

i get an error as /usr/bin/openf90: cannot execute binary file..!!

could somebody help with me with this??

**KenJackson** · 02-06-2007

I'm not familiar with those tools, but regardless of what they are you can investigate a little:

Code:

ls -l /usr/bin/openf90

That should give you something like this:

Code:

-rwxr-xr-x 1 root root <size> <date> /usr/bin/openf90

If that last x is a dash, '-', instead of an 'x', it means users don't have execution priviledge. You can fix it (as root) with this:

Code:

chmod +x /usr/bin/openf90

But you may want to investigate that file and be sure it's an executable with this command:

Code:

file /usr/bin/openf90

That will either probably display either ELF ... or "Borne shell script...". If it's the latter you can optionally view it with this command (press q to quit)

Code:

less /usr/bin/openf90

If it's not one of those two (or some things like perl), then it's probably not an executable.

**SunitaChandrasekaran** · 02-07-2007

Hi
Thank you so much for the reply.

I followed the steps.

But
code :file /usr/bin/openf90
gives

/usr/bin/openf90 : symbolic link to //usr//lib/gcc-lib/ia64-open64-linux/0.16/driver

as the result

**SunitaChandrasekaran** · 02-07-2007

hi

after trying with file usr/bin/openf90

i also tried with less /usr/bin/openf90

it gives some data on the shell, starting with ELF, rest i am not able to comprehend.

**KenJackson** · 02-07-2007

OK, it's a symbolic link that points to the real file, which apparently is a binary executable (ELF), not a shell script. So try this to see the protections:

Code:

ls -l /usr/lib/gcc-lib/ia64-open64-linux/0.16/driver

If the the result starts with something like "-rw-r--r-- ...", then make it executable (as root):

Code:

chmod +x /usr/lib/gcc-lib/ia64-open64-linux/0.16/driver

Please note that I don't know anything about that file. I'm assuming you got it from a reliable source and that it should be executable.

**SunitaChandrasekaran** · 02-07-2007

hi thanks

but the file is already in executable mode with an 'x'.
rwxr-xr-x

yeah, it is from a reliable source

http://www2.cs.uh.edu/~dragon/home.shtml

i have followed the installation instructions and installed open64 and dragon
now when i try this command as part of the installation notes :

code : openf90 -dragon -ipa -O2 BT.f

it says

/usr/bin/openf90: cannot execute binary file

**KenJackson** · 02-07-2007

You can try strace with one of these commands:

Code:

strace openf90 -dragon -ipa -O2 BT.f
strace openf90 -dragon -ipa -O2 BT.f  2>&1 |less -S

Strace puts out lots and lots of debug information. Most of it is uninteresting but there is probably one line that will tell you what the problem is.

The second command pipes the output through 'less' so you can scroll through it. The -S switch makes the lines not wrap so they are a little easier to read.

**SunitaChandrasekaran** · 02-07-2007

hi

i get the message as :

execve("/usr/bin/openf90", ["openf90" "-dragon" "-ipa" "-O2", "BT.f"],[/*33 vars */] = 0
strace : exec : Exec format error

one doubt this -O2 is the alphabet 'O' ?

**KenJackson** · 02-07-2007

one doubt this -O2 is the alphabet 'O' ?

It doesn't look like it's getting that far. I suspect it's not even starting to execute.

When you run 'file' on the file, what does it say?

Code:

file /usr/lib/gcc-lib/ia64-open64-linux/0.16/driver

Does it say "ELF 32-bit LSB executable, Intel 80386, ..."? Or are you running a 64-bit PC? (Run the command "uname -a" if you're not sure.)

Here's one more bit of info you can get: run this command to see what dynamically linked libraries (.so files) it's looking for.

Code:

ldd /usr/lib/gcc-lib/ia64-open64-linux/0.16/driver

I'm not sure what to do here, although I did notice on the site that there is a requirement that you have vcg installed. I don't know what that is.

**SunitaChandrasekaran** · 02-07-2007

on
code : file /usr/lib/gcc-lib/ia64-open64-linux/0.16/driver

it says :
/usr/lib/gcc-lib/ia64-open64-linux/0.16/driver: ELF 64-bit LSB executable, IA-64, version 1 (SYSV), dynamically linked (user shared bits), not stripped

on
code : ldd /usr/lib/gcc-lib/ia64-open64-linux/0.16/driver

it says
not a dynamic executable

on
code: uname -a

it says
linux local host.....i686unknown

vcg is already installed, this is to display the various graphs of the dragon tool displaying call graphs, loop rolling of comp architecture etc...

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