编译dbus 时出现的问题

编译dbus 时出现：

1checking for accept4... yes
checking abstract socket namespace... no
checking for pkg-config... (cached) /usr/local/bin/pkg-config
checking pkg-config is at least version 0.9.0... yes
checking for XML_ParserCreate_MM in -lexpat... no
configure: error: Could not find expat.h, check config.log for failed attempts

解决方案：

export LDFLAGS=-Wl,-L/usr/local/lib,-lexpat
export CPPFLAGS=-I/usr/local/include