I used these commands rm -rf build-qt cvs update -d ./autogen.sh cd build-qt ../configure --with-version-suffix --prefix=$LYXPREFIX --disable-libtool-lock --with-frontend=qt make
and eventually got this error: g++ -DHAVE_CONFIG_H -I. -I../../../src/mathed -I../../src -I../../../src/mathed/../ -I../../../boost -I/usr/X11R6/include -g -O -fno-exceptions -ftemplate-depth-30 -Wno-non-template-friend -W -Wall -MT formulabase.lo -MD -MP -MF .deps/formulabase.Tpo -c ../../../src/mathed/formulabase.C In file included from ../../../src/support/debugstream.h:17, from ../../../src/debug.h:16, from ../../../src/mathed/formulabase.C:29: ../../../boost/boost/test/detail/nullstream.hpp:20:48: ostream: No such file or directory ../../../boost/boost/test/detail/nullstream.hpp:21:50: streambuf: No such file or directory ../../../src/mathed/formulabase.C:829:2: warning: #warning pretty ugly make[3]: *** [formulabase.lo] Error 1 make[3]: Leaving directory `/space/lyx-devel/HEAD/build-qt/src/mathed' How do I fix it? /Christian -- Christian Ridderström http://www.md.kth.se/~chr