Flex Error

hi guys,

I am a newbie, and learning flex. I am setup cygwin on my pc, but when I run

$ flex test.l

I got an error

flex: fatal internal error, exec failed

anyone know what could be wrong?

I had the same problem and decided to run flex on an Ubuntu box and simply copy the .c file to my cygwin directory. However I noticed as flex was being installed the installer asked if it was OK to install m4. I checked my cygwin install and m4 was absent.

Seems (cygwin) flex has a dependency on m4 which seems to be ignored by the cygwin installer. So I installed m4 and flex now works.

HTH