`--> makepkg -s

...

Making all in coreapi
make[2]: Entering directory `/tmp/makepkg/src/linphone-3.5.2/coreapi'
Making all in .
make[3]: Entering directory `/tmp/makepkg/src/linphone-3.5.2/coreapi'
  CC     linphonecore.lo
  CC     offeranswer.lo
  CC     sal.lo
  CC     sal_eXosip2.lo
  CC     sal_eXosip2_sdp.lo
  CC     sal_eXosip2_presence.lo
  CC     callbacks.lo
  CC     misc.lo
  CC     address.lo
  CC     enum.lo
  CC     presence.lo
  CC     proxy.lo
  CC     friend.lo
  CC     authentication.lo
  CC     lpconfig.lo
  CC     chat.lo
  CC     linphonecall.lo
  CC     sipsetup.lo
  CC     siplogin.lo
  CC     lsd.lo
  CC     ec-calibrator.lo
  CC     conference.lo
  CXX    linphone_tunnel.lo
  CC     sipwizard.lo
  CC     test_lsd.o
  CC     test_ecc.o
  CXXLD  liblinphone.la
  CCLD   test_lsd
  CCLD   test_ecc
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_DestroyWrapper'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_setMultiStrParams'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_CheckCksum'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_setMandatoryOnly'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_resetSASVerified'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_setTrustedMitM'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_setSasSignature'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_processZrtpMessage'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_getMultiStrParams'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_isMultiStream'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_initializeZrtpEngine'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_CreateWrapper'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_stopZrtpEngine'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_isMultiStreamAvailable'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_startZrtpEngine'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_SASVerified'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_GenerateCksum'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_setEnrollmentMode'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_processTimeout'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_EndCksum'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_inState'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_InitializeConfig'
collect2: error: ld returned 1 exit status
make[3]: *** [test_lsd] Error 1
make[3]: *** Waiting for unfinished jobs....
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_DestroyWrapper'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_setMultiStrParams'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_CheckCksum'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_setMandatoryOnly'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_resetSASVerified'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_setTrustedMitM'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_setSasSignature'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_processZrtpMessage'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_getMultiStrParams'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_isMultiStream'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_initializeZrtpEngine'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_CreateWrapper'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_stopZrtpEngine'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_isMultiStreamAvailable'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_startZrtpEngine'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_SASVerified'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_GenerateCksum'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_setEnrollmentMode'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_processTimeout'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_EndCksum'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_inState'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../lib/libortp.so: undefined reference to `zrtp_InitializeConfig'
collect2: error: ld returned 1 exit status
make[3]: *** [test_ecc] Error 1
make[3]: Leaving directory `/tmp/makepkg/src/linphone-3.5.2/coreapi'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/tmp/makepkg/src/linphone-3.5.2/coreapi'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/tmp/makepkg/src/linphone-3.5.2'
make: *** [all] Error 2
==> ERROR: A failure occurred in build().
    Aborting...