I'm not going to touch this either, but note when compiling the Qt frontend, I have the following entry when compiling code in src/frontends/qt2
-I../../../../src/frontends/qt2/qt2 Note the extra "qt2". This occurs because FRONTEND_INCLUDES is defined in configure.in as FRONTEND_INCLUDES="-I\${srcdir}/qt2 \$(QT_INCLUDES)" and is used in src/frontends/qt2/Makefile.am INCLUDES = -I$(top_srcdir)/src/ -I$(top_srcdir)/src/frontends/ \ $(SIGC_CFLAGS) -I$(top_srcdir)/images \ $(FRONTEND_INCLUDES) $(BOOST_INCLUDES) \ -I$(top_srcdir)/src/frontends/controllers Note that the corresponding Makefile.am in frontends/xforms does /not/ use FRONTEND_INCLUDES. Regards, Angus