On 09/23/2010 02:48 PM, Vincent Schut wrote:
Hi,
I was curious about the new gdal klmsuperoverlay driver
(frmts/kmlsuperoverlay). I have installed minizip, and ran make in the
frmts/kmlsuperoverlay folder, which resulted in a
kmlsuperoverlaydataset.o. Now what? How would I incorporate this into
my gdal lib, either internally or as a plugin? I tried to search
google to no avail, documentation (or my searching abilities) appears
to be a bit sparse...
No one?
Shamelessly bumping my own message with some more info:
I've tried creating a .so from the .o (gcc -shared
-Wl,-soname,kmlsuperoverlaydataset.so -o kmlsuperoverlaydataset.so
kmlsuperoverlaydataset.o -lminizip -lsz -ljpeg -lgdal) and copying that
in /usr/local/lib/gdalplugins, but gdalinfo --formats still doesn't show
kmlsuperoverlay as a supported format. Stracing gdalinfo shows that it's
stat-ing /usr/local/lib/gdalplugins, however, nothing is loaded from there.
Now I might be missing something essential when creating the .so; I've
just copied some stuff from other plugin formats' makefiles... I'd be
grateful if anyone could shine some more light on it, even just by
saying, hey, don't bother, kmlsuperoverlay is only supported on
windows/not working/eating your root fs/whatever reason there is to not
try to use it...
(strace output | grep -i plugin:
...
open("/usr/local/lib/gdalplugins",
O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 3
fcntl(3, F_GETFD) = 0x1 (flags FD_CLOEXEC)
getdents(3, /* 3 entries */, 32768) = 96
getdents(3, /* 0 entries */, 32768) = 0
close(3) = 0
fstat(1, {st_mode=S_IFIFO|0600, st_size=0, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x7f323e014000
write(1, "Supported Formats:\n VRT (rw+): "..., 3812Supported Formats:
VRT (rw+): Virtual Raster
GTiff (rw+v): GeoTIFF
...
)
Regards,
Vincent.
Btw, I'm on linux and using gdal from svn.
Regards,
Vincent.
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