./configure : /bin/sh^M : bad interpreter

Question

Hello there,

I've been trying to install lpng142 on my fed 12 system. Seems like a problem to me. I get this error

[root@localhost lpng142]# ./configure
bash: ./configure: /bin/sh^M: bad interpreter: No such file or directory
[root@localhost lpng142]# 

How do I fix this? and for more details, I shall include the /etc/fstub file details here

#
# /etc/fstab
# Created by anaconda on Wed May 26 18:12:05 2010
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/VolGroup-lv_root /                       ext4    defaults        1 1
UUID=ce67cf79-22c3-45d4-8374-bd0075617cc8 /boot                   ext4    
defaults        1 2
/dev/mapper/VolGroup-lv_swap swap                    swap    defaults        0 0
tmpfs                   /dev/shm                tmpfs   defaults        0 0
devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
sysfs                   /sys                    sysfs   defaults        0 0
proc                    /proc                   proc    defaults        0 0
[root@localhost etc]# 

Help, please

Answer 1

Your configure file contains CRLF line endings (windows style) instead of simple LF line endings (unix style). Did you transfer it using FTP mode ASCII from Windows?

You can use

dos2unix configure

to fix this, or open it in vi and use :%s/^M//g; to substitute them all (use CTRL+V, CTRL+M to get the ^M)

Answer 2

Looks like you have a dos line ending file. The clue is the ^M

You need to re-save the file using Unix line endings.

You might have a dos2unix command line utility that will also do this for you.