building Umbrello 1.5.1

I have QT3 and kdelibs installed.
Configure passess well, but on make I'm getting this error:

if /usr/local/bin/bash ../../../libtool --silent --tag=CXX --mode=compile g++
-DHAVE_CONFIG_H  -I. -I. -I../../.. -I../dialogs -I/usr/local/include
-I/usr/X11R6/include  -DQT_THREAD_SUPPORT  -D_THREAD_SAFE   -Wno-long-long
-Wundef -Wall -W -Wpointer-arith -O2 -Wno-non-virtual-dtor -fno-exceptions
-fno-check-new -fno-common -DQT_CLEAN_NAMESPACE -DQT_NO_ASCII_CAST -DQT_NO_STL
-DQT_NO_COMPAT -DQT_NO_TRANSLATION  -MT ast.lo -MD -MP -MF ".deps/ast.Tpo" -c
-o ast.lo ast.cpp;  then mv -f ".deps/ast.Tpo" ".deps/ast.Plo"; else rm -f
".deps/ast.Tpo"; exit 1; fi
libtool: compile: cannot determine name of library object from `'
*** Error code 1

Ani ideas why is that?
-- 
Eugene N Dzhurinsky


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