Hi Nikos, Thanks for the correction. I didn't use the correct syntax previously; the correct form in gnutls3.pc was LIBGNUTLS_LIBS="-L/usr/local/lib/gnutls3 -lgnutls" LIBGNUTLS_CFLAGS="-I/usr/local/include/gnutls3" However, make still complains about missing "gnutls/gnutls.h". I guess there's some intrinsic error in that pkg-conf file probably, since I've tried to make a copy of that file named gnutls.pc (so that pkg-config can find it), but the compiler still has the same error. Thanks, TZ On 3/31/2014 3:53 AM, Nikos Mavrogiannopoulos wrote: > LIBGNUTLS_LIBS="-L/usr/local/lib/ -lgnutls"