./configure trouble with X

[Jason Sewall]

In everything I've tried to install that needs X - like gnuplot and TeXmacs, I can't get past a problem with ./configure. Every time I run the script, I get this error after some regular-looking output:

checking for ANSI C header files... yes
checking for string.h... yes
checking how to run the C preprocessor... gcc -E
checking for working const... yes
checking for inline... inline
checking for preprocessor stringizing operator... yes
checking if compiler handles warn and error directives correctly... yes
checking for X... eval: 1: Syntax error: "(" unexpected

I've tried hacking open the scripts and so forth, to no avail. I looks like an interpreter problem, but hell if I know what it means. X works fine under my cygwin install, but I can't compile anything for it!

I have the x headers installed and so on...

Any help would be appreciated!

Jason