executable: No such file or directory

SpacePlod · 06-18-2015, 11:35 AM

I have a Raspberry Pi 2 that I installed Slackware Current to from here: http://rpi.fatdog.eu/

I'm trying to set it up for my son to learn python with, and one of the resources is Minecraft-pi.

When I try to run it I get this:

Code:

@SlackPi:~/Sources/mcpi# ls
CONTROLS.txt    LICENSE.txt  api/   minecraft-pi*
HOW_TO_RUN.txt  VERSION.txt  data/

@SlackPi:~/Sources/mcpi# ./minecraft-pi 
bash: ./minecraft-pi: No such file or directory

@SlackPi:~/Sources/mcpi# ls -l minecraft-pi 
-rwxr-xr-x 1 504 games 1206760 Feb 11  2013 minecraft-pi*

@SlackPi:~/Sources/mcpi# file minecraft-pi 
minecraft-pi: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-armhf.so.3, BuildID[sha1]=ec7c5a7f459230e837d8551aab60b290e9599e63, stripped

@SlackPi:~/Sources/mcpi# ldd minecraft-pi 
	libGLESv2.so => /opt/vc/lib/libGLESv2.so (0x76f2c000)
	libEGL.so => /opt/vc/lib/libEGL.so (0x76efa000)
	libbcm_host.so => /opt/vc/lib/libbcm_host.so (0x76ee0000)
	libpng12.so.0 => /usr/lib/libpng12.so.0 (0x76eb9000)
	libSDL-1.2.so.0 => /usr/lib/libSDL-1.2.so.0 (0x76e31000)
	libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x76d5e000)
	libm.so.6 => /lib/libm.so.6 (0x76cb6000)
	libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x76c8f000)
	libc.so.6 => /lib/libc.so.6 (0x76b35000)
	libpthread.so.0 => /lib/libpthread.so.0 (0x76b13000)
	libX11.so.6 => /usr/lib/libX11.so.6 (0x769fb000)
	libvcos.so => /opt/vc/lib/libvcos.so (0x769e9000)
	libdl.so.2 => /lib/libdl.so.2 (0x769de000)
	librt.so.1 => /lib/librt.so.1 (0x769cf000)
	libvchiq_arm.so => /opt/vc/lib/libvchiq_arm.so (0x769c1000)
	libz.so.1 => /lib/libz.so.1 (0x769a2000)
	libXrandr.so.2 => /usr/lib/libXrandr.so.2 (0x76993000)
	libXext.so.6 => /usr/lib/libXext.so.6 (0x7697e000)
	libXrender.so.1 => /usr/lib/libXrender.so.1 (0x7696e000)
	libxcb.so.1 => /usr/lib/libxcb.so.1 (0x76950000)
	libXau.so.6 => /usr/lib/libXau.so.6 (0x76946000)
	libXdmcp.so.6 => /usr/lib/libXdmcp.so.6 (0x7693a000)
	/lib/ld-linux-armhf.so.3 => /lib/ld-linux.so.3 (0x76f6d000)

At first, I would get the same error, but ldd would show that libpng12 was missing. So I rebuild libpng with the original slackbuild for versions 12 and 16. Once installed, the correct libpng is found, but I still can't figure out why "file not found" comes up. Any ideas?

Oh, and I also had to add /opt/vc/lib to ld.so.conf for both minecraft-pi (there were other 'missing' libs) and for the picamera
package (libmmal.so). Does anyone know where /opt/vc/ comes from?

EDIT: I'm wondering if "interpreter /lib/ld-linux-armhf.so.3" from the file output has anything to do with it, or is that just a build time artifact. I have no "/lib/ld-linux-armhf.so.3" on this system.

Ser Olmy · 06-18-2015, 12:03 PM

Try running the executable through strace. That should tell you which file it's looking for.

SpacePlod · 06-18-2015, 12:34 PM

Quote:

Originally Posted by Ser Olmy

Try running the executable through strace. That should tell you which file it's looking for.

Thanks. I already tried that earlier and the output gave no additional information. I should have included that in my original post.

Code:

@SlackPi:~/Sources/mcpi# strace ./minecraft-pi 
execve("./minecraft-pi", ["./minecraft-pi"], [/* 32 vars */]) = -1 ENOENT (No such file or directory)
write(2, "strace: exec: No such file or di"..., 40strace: exec: No such file or directory
) = 40
exit_group(1)                           = ?
+++ exited with 1 +++

@SlackPi:~/Sources/mcpi# strace -e open ./minecraft-pi 
strace: exec: No such file or directory
+++ exited with 1 +++

From a bit of research:

Code:

ENOENT A component of path or file does not name an existing file or path or file is an empty string.

Ser Olmy · 06-18-2015, 12:44 PM

Can you execute other files in this directory?

SpacePlod · 06-18-2015, 12:52 PM

Quote:

Originally Posted by Ser Olmy

Can you execute other files in this directory?

Yes. There are no other files there, but if I copy some in or make a test script and chmod it, then it will execute just fine.

Every thing I'm reading about regarding this shows it's usually an architecture problem (running 32 bit bins in a 64 bit env, etc). I cant figure this one out, though.

drmozes · 06-18-2015, 03:22 PM

Quote:

Originally Posted by SpacePlod

@SlackPi:~/Sources/mcpi# file minecraft-pi
minecraft-pi: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-armhf.so.3, BuildID[sha1]=ec7c5a7f459230e837d8551aab60b290e9599e63, stripped

This is compiled for a hard float distribution. Slackware ARM is soft float so it won't work. You will need to recompile minecraft.

SpacePlod · 06-18-2015, 03:35 PM

Quote:

Originally Posted by drmozes

This is compiled for a hard float distribution. Slackware ARM is soft float so it won't work. You will need to recompile minecraft.

Ah, got it. I'll have to see if I can find the source code somewhere - I'm guessing not.

I was hoping to avoid being forced into Raspian.

Thanks!