compile error with balsa-2.1.0

[tn fenster <balsa ars-solvendi de>]

Hello,

I tried to make balsa-2.1.0, but got the following error:

gcc -DG_DISABLE_DEPRECATED -DGTK_DISABLE_DEPRECATED - 
DGNOME_DISABLE_DEPRECATED -I.. -I.. -I../libbalsa -I../libbalsa/imap - 
I/usr/local/include/gmime-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib- 
2.0/include -I/opt/gnome2/include/libgnome-2.0 -I/usr/include/orbit-2.0  
-I/opt/gnome2/include/libbonobo-2.0 -I/opt/gnome2/include/gconf/2 -I/ 
opt/gnome2/include/gnome-vfs-2.0 -I/opt/gnome2/lib/gnome-vfs-2.0/ 
include -I/usr/include/linc-1.0 -I/opt/gnome2/include/bonobo- 
activation-2.0 -I/usr/include/libxml2 -I/opt/gnome2/include/libgnomeui- 
2.0 -I/opt/gnome2/include/libgnomecanvas-2.0 -I/usr/include/gtk-2.0 -I/ 
usr/include/libart-2.0 -I/opt/gnome2/include/libbonoboui-2.0 -I/usr/ 
include/pango-1.0 -I/usr/include/freetype2 -I/usr/lib/gtk-2.0/include - 
I/usr/include/atk-1.0 -I/usr/X11R6/include -I/opt/gnome2/include/gnome- 
vfs-module-2.0     -I/opt/gnome2/include/libgnomeprint-2.0 -I/usr/ 
include/libart-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include  
-I/usr/include/libxml2 -I/opt/gnome2/include/libbonobo-2.0 -I/usr/ 
include/pango-1.0 -I/usr/include/orbit-2.0 -I/opt/gnome2/include/ 
bonobo-activation-2.0 -I/usr/include/linc-1.0 -I/opt/gnome2/include/ 
libgnomeprintui-2.0 -I/opt/gnome2/include/libgnomecanvas-2.0 -I/usr/ 
include/freetype2 -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/ 
usr/include/atk-1.0 -I/usr/X11R6/include    -I/opt/gnome2/include/ 
gtkhtml-2.0 -I/usr/include/gtk-2.0 -I/usr/include/libxml2 -I/usr/lib/ 
gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/pango-1.0 -I/usr/ 
X11R6/include -I/usr/include/freetype2 -I/usr/include/glib-2.0 -I/usr/ 
lib/glib-2.0/include       -g -O2 -Wsign-compare -Wpointer-arith - 
Wnested-externs -Wchar-subscripts -Wuninitialized -Wmissing-prototypes  
-Wreturn-type -c libbalsa.c
libbalsa.c: In function `libbalsa_assure_balsa_dir':
libbalsa.c:346: `S_IRUSR' undeclared (first use in this function)
libbalsa.c:346: (Each undeclared identifier is reported only once
libbalsa.c:346: for each function it appears in.)
libbalsa.c:346: `S_IWUSR' undeclared (first use in this function)
libbalsa.c:346: `S_IXUSR' undeclared (first use in this function)

Thanks for any help

Tobas