[Help-gsl] help installing gsl

[dkenned1]

Hi,
I am working in Windows XP trying to install the GNU
scientific library onto Cygwin.  After downloading and
unzipping the gsl-1.8.tar.gz file and "cd"ing to the gsl-1.8,
I tried to begin the installation by typing 

./configure 

However, I got the error message 

: command not found1:
./configure: line 19: syntax error near unexpected token 'elif'
./configure: line 19: 'elif test -n "${BASH_VERSION+set} &&
(set -o posix)>/de'/null 2>&1; then
    
If anyone can help me get past this step it would be very
helpful.  Thanks in advance.
Dave