Hi, on my Solaris box, the following happens on compilation of
nautilus-cd-burner ....:

/appl/gnu/gcc-3.0.4_sol2.8/bin/gcc -DHAVE_CONFIG_H -I. -I. -I. -pthreads
-DORBIT2=1 -I/home/konjojo/Solaris/gnome-2.2/include/gnome-vfs-2.0
-I/home/konjojo/Solaris/gnome-2.2/lib/gnome-vfs-2.0/include
-I/home/konjojo/Solaris/gnome-2.2/include/bonobo-activation-2.0
-I/home/konjojo/Solaris/gnome-2.2/include/glib-2.0
-I/home/konjojo/Solaris/gnome-2.2/lib/glib-2.0/include
-I/home/konjojo/Solaris/gnome-2.2/include/orbit-2.0
-I/home/konjojo/Solaris/gnome-2.2/include/linc-1.0
-I/home/konjojo/Solaris/gnome-2.2/include/gnome-vfs-module-2.0   -DORBIT2=1
-pthreads -I/home/konjojo/Solaris/gnome-2.2/include/glib-2.0
-I/home/konjojo/Solaris/gnome-2.2/lib/glib-2.0/include
-I/home/konjojo/Solaris/gnome-2.2/include/libgnome-2.0
-I/home/konjojo/Solaris/gnome-2.2/include/orbit-2.0
-I/home/konjojo/Solaris/gnome-2.2/include/libbonobo-2.0
-I/home/konjojo/Solaris/gnome-2.2/include/gconf/2
-I/home/konjojo/Solaris/gnome-2.2/include/gnome-vfs-2.0
-I/home/konjojo/Solaris/gnome-2.2/lib/gnome-vfs-2.0/include
-I/home/konjojo/Solaris/gnome-2.2/include/linc-1.0
-I/home/konjojo/Solaris/gnome-2.2/include/bonobo-activation-2.0
-I/home/konjojo/Solaris/gnome-2.2/include/gtk-2.0
-I/home/konjojo/Solaris/gnome-2.2/lib/gtk-2.0/include
-I/home/konjojo/Solaris/gnome-2.2/include/atk-1.0
-I/home/konjojo/Solaris/gnome-2.2/include/pango-1.0
-I/home/konjojo/Solaris/gnome-2.2/include
-I/home/konjojo/Solaris/gnome-2.2/include/freetype2 -I/usr/openwin/include
-I/home/konjojo/Solaris/gnome-2.2/include/libglade-2.0
-I/home/konjojo/Solaris/gnome-2.2/include/libxml2    -D_FILE_OFFSET_BITS=64
-D_GNU_SOURCE -D_LARGEFILE64_SOURCE -D_REENTRANT -D_POSIX_PTHREAD_SEMANTICS
-DPREFIX=\"/home/konjojo/Solaris/gnome-2.2\"
-DLIBEXECDIR=\""/home/konjojo/Solaris/gnome-2.2/libexec"\"
-DDATADIR=\""/home/konjojo/Solaris/gnome-2.2/share/nautilus-cd-burner"\"
-DGNOMELOCALEDIR=\""/home/konjojo/Solaris/gnome-2.2/share/locale"\" 
-I/home/konjojo/Solaris/gnome-2.2/include -I/usr/openwin/include
-I/home/konjojo/Solaris/include -I/home/konjojo/Solaris/gnome-2.2/include
-I/usr/openwin/include -I/home/konjojo/Solaris/include  -Wall
-I/home/konjojo/Solaris/gnome-2.2/include -I/usr/openwin/include
-I/home/konjojo/Solaris/include -L/home/konjojo/Solaris/gnome-2.2/lib
-L/usr/openwin/lib -L/home/konjojo/Solaris/lib -O2 -pipe
-I/home/konjojo/Solaris/gnome-2.2/include -I/usr/openwin/include
-I/home/konjojo/Solaris/include -L/home/konjojo/Solaris/gnome-2.2/lib
-L/usr/openwin/lib -L/home/konjojo/Solaris/lib -O2 -pipe -c make-iso.c
make-iso.c: In function `graft_file_visitor':
make-iso.c:287: warning: implicit declaration of function `mkdtemp'
make-iso.c:287: warning: assignment makes pointer from integer without a cast
make-iso.c: In function `make_iso':
make-iso.c:473: storage size of `statfs_buf' isn't known
make-iso.c:477: warning: assignment makes pointer from integer without a cast
make-iso.c:548: warning: implicit declaration of function `statfs'
make-iso.c:473: warning: unused variable `statfs_buf'
gmake[4]: *** [make-iso.o] Error 1

It turns out that on a Solaris box, the statfs() function is declared in
<sys/statfs.h>.  But reading that file gives that it shouldn't be used,
it's soon to be removed from Solaris.  Instead, statvfs() should be used.