[GRASS-dev] lib/pngdriver Mingw compile error
glynn at gclements.plus.com
Wed Nov 1 15:39:02 EST 2006
Paul Kelly wrote:
> >> Next problem is this one here:
> >> OBJ.i686-pc-mingw32/main.o(.text+0x188): In function `main':
> >> c:/grass/grass6/display/drivers/PNG/main.c:43: undefined reference to `LIB_main'
> >> collect2: ld returned 1 exit status
> >> make: *** [/c/grass/grass6/dist.i686-pc-mingw32/driver/PNG] Error 1
> >> sh-2.04$
> >> LIB_main() should be defined in libgrass_driver, right?
> > Right; lib/driver/main.c.
> >> Bit lost on this
> > Same here. As it's linking with -lgrass_driver, I have no idea why you
> > are getting that error. Can you use nm or dlltool to check that the
> > symbol is actually present in libgrass_driver.
> It wasn't there! I think the problem is this bit in lib/driver/Makefile:
> ifneq ($(HAVE_SOCKET),)
> LIB_OBJS += \
Oops. I forgot to mention that the display drivers simply won't
compile on native Windows. I know that, but for some reason it didn't
register when I was writing my reply.
In my previous message, I mentioned:
> That still leaves one more problem:
> 5. Native windows doesn't support PF_LOCAL (Unix-domain) sockets.
This is the problem.
> $HAVE_SOCKET is empty because the configure script isn't detecting sockets
> properly. This page: http://www.mingw.org/MinGWiki/index.php/sockets
> appears to give some useful information on what needs done but I'm not
> sure if some or any of it has been done already in other parts of GRASS?
> E.g. how have some people got native Windows GRASS working and not come
> across this before?
By ignoring any errors related to the drivers. Drivers don't work on
native Windows; at all. That's why you have to use gis.m, which uses
direct (driver-less) rendering.
Glynn Clements <glynn at gclements.plus.com>
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