In the log I see a line
/usr/bin/install -c .libs/libgiomm-2.4.so.1.0.25T /mydir/glibmm-2.16.4/glibmm-2.16.4/gio/giomm/TEMP/usr/lib/libgiomm-2.4.so.1.0.25
Thats the only place where I see this T file in the build ouptut. Who generates this file and why? Why doesn't it install .libs/libgiomm-2.4.so.1.0.25?