[OpenIndiana-discuss] missing xattr.h or how to mount webdav?

[Евгений Парфенов]

Trying to build davfs2:
make[2]: Entering directory `/root/distr/davfs2-1.5.2/src'
gcc -DPROGRAM_NAME=\"mount.davfs\" 
-DDAV_SYS_CONF_DIR=\"/usr/local/etc/davfs2\" 
-DDAV_LOCALSTATE_DIR=\"/var/run\" -DDAV_SYS_RUN=\"/var/run/mount.davfs\" 
-DDAV_SYS_CACHE=\"/var/cache/davfs2\" -DDAV_SECRETS=\"secrets\" 
-DDAV_CONFIG=\"davfs2.conf\" -DDAV_CERTS_DIR=\"certs\" 
-DDAV_CLICERTS_DIR=\"private\" 
-DDAV_DATA_DIR=\"/usr/local/share/davfs2\" 
-DLOCALEDIR=\"/usr/local/share/locale\" -DDAV_USER=\"davfs2\" 
-DDAV_GROUP=\"davfs2\" -D_FORTIFY_SOURCE=2 -DHAVE_CONFIG_H -I. -I..    
-Wall -Werror=format-security -fstack-protector 
--param=ssp-buffer-size=4 -g -O2 -I/usr/include/neon -MT cache.o -MD -MP 
-MF .deps/cache.Tpo -c -o cache.o cache.c
cache.c:61:23: error: sys/xattr.h: No such file or directory
cache.c: In function 'dav_init_cache':

i tried using cadavre but have difficulties with scripting.
may be there is another driver or "easy to script" client for webdav?