Hey guys, I'm unable to compile mod_sndfile even though I have installed all the devel packages. # yum install libsndfile-devel Package libsndfile-devel-1.0.25-10.el7.x86_64 already installed and latest version # make mod_sndfile make[1]: Entering directory `/opt/freeswitch' make libfreeswitch.la make[2]: Entering directory `/opt/freeswitch' make[2]: Leaving directory `/opt/freeswitch' make[1]: Leaving directory `/opt/freeswitch' make[1]: Entering directory `/opt/freeswitch/src/mod' make[2]: Entering directory `/opt/freeswitch/src/mod' making all mod_sndfile make[3]: Entering directory `/opt/freeswitch/src/mod/formats/mod_sndfile' Makefile:888: *** You must install libsndfile-dev to build mod_sndfile. Stop. make[3]: Leaving directory `/opt/freeswitch/src/mod/formats/mod_sndfile' make[2]: *** [mod_sndfile-all] Error 1 make[2]: Leaving directory `/opt/freeswitch/src/mod' make[1]: *** [mod_sndfile] Error 2 make[1]: Leaving directory `/opt/freeswitch/src/mod' make: *** [mod_sndfile] Error 2 Any tips? Best Regards.