Dear all I want to compile the libjingle on linux and I had installed the oRTP(0.7.1),speex(1.1.12),and expat(2.0.1),openssl(0.9.7l). the libjingle home page show that the libjingle depends on the linphone ,when I building the linphone show this error:

./configure ... ... ... ... checking for SPEEX... Package speex was not found in the pkg-config search path. Perhaps you should add the directory containing `speex.pc' to the PKG_CONFIG_PATH environment variable No package 'speex' found configure: error: Package requirements (speex >= 1.1.6) were not met: Consider adjusting the PKG_CONFIG_PATH environment variable if you installed software in a non-standard prefix.

Alternatively, you may set the environment variables SPEEX_CFLAGS and SPEEX_LIBS to avoid the need to call pkg-config. See the pkg-config man page for more details.

I dont known how to deal it ! when you known the reason tell me ,pleanse!

thanks!