The display of text in the program is too ugly to be simply a problem of style. But the problem indeed lies in the process of building Qt. When I ran ./configure
, I output the configure information into a log file and found things like
88 Xinerama support ....... no
89 Xcursor support ........ no
90 Xfixes support ......... no
91 Xrandr support ......... no
92 Xrender support ........ no
93 Xi support ............. no
Moreover, I found the Qt for X11 requirements here. Therefore I concluded that the problem lies in a lack of such libraries. And fortunately, everything works fine after installing them.