我正在尝试编译Xfce Pulse 音频插件.但是./configure有问题：
checking for libpulse-mainloop-glib >= 0.9.19... not found
*** The required package libpulse-mainloop-glib was not found on your system.
*** Please install libpulse-mainloop-glib (atleast version 0.9.19) or adjust
*** the PKG_CONFIG_PATH environment variable if you
*** installed the package in a nonstandard prefix so that
*** pkg-config is able to find it.
我找不到libpulse-mainloop-glib，我只能找到libpulse-mainloop-glib0（和0在最后）。