问题 I downloaded and installed libjingle-0.5.2.zip, and according to the README also downloaded and installed swtoolkit.0.9.1.zip, scons-local-2.1.0.alpha.20101125.tar.gz, and expat-2.0.1.tar.gz, and got nrtp by cvs download. After overwriting my Makefile twice, attempting to follow the rather poorly-written README, I came up with the following Makefile that almost works: # First, make sure the SCONS_DIR environment variable is set correctly. SCONS_DIR ?= /usr/src/scons-local/scons-local-2.1.0