[sane-devel] sane runs in windows without cygwin

[Michael Cronenworth]

Hello,

I've had success in building sane with MinGW, MSYS, and 
libusb-win32-0.12. During my initial work I was unable to find much of 
anything about such a feat as most people settled for Cygwin.

Some caveats:
1. I ripped out all backends except for "fujitsu" as this is the scanner 
I have. The "fujitsu" code required no modifications to compile.
2. Signals, threading, and scsi are also obviously not available. I put 
#ifdef 32 or #ifndef WIN32 around the problem areas.
3. I changed sleep() calls to usleep() calls or used the Windows method 
of sleep.
4. getpass() is used?!?

In retrospect:
1. The rest of the backends seemed to need extensive rework as they use 
signals and ioctl calls that do not translate at all.
2. Threading and scsi could be made available quite easily by adding 
Windows equivalents.
3. Platform independent sleep calls should be put in.
4. Obsolete function! This should be replaced with similar functionality.

I have a GTK+2 app that used sane in Linux and it works in Windows 
without any modification to the app code. I scanned successfully and my 
program rendered a beautiful PNG to the screen. It should be noted that 
in order for the scanner to be detected, I had to install the Fujitsu 
TWAIN driver. I guess libusb-win32 could not detect the device until the 
appropriate driver was installed? Artefact of using Windows inside of 
VirtualBox?

If anyone is interested in the changes I've made, I'd be interested in 
making them available.

Regards,
Michael
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