diff --git a/jni/pjproject-android/pjmedia/build/os-auto.mak.in b/jni/pjproject-android/pjmedia/build/os-auto.mak.in
index b0502f3..f451331 100644
--- a/jni/pjproject-android/pjmedia/build/os-auto.mak.in
+++ b/jni/pjproject-android/pjmedia/build/os-auto.mak.in
@@ -129,6 +129,42 @@
 
 
 #
+# SRTP
+#
+ifeq (@ac_external_srtp@,1)
+# External SRTP
+export CFLAGS += -DPJMEDIA_EXTERNAL_SRTP=1
+else
+# Our SRTP in third_party
+export CFLAGS += -I$(THIRD_PARTY)/build/srtp \
+	 -I$(THIRD_PARTY)/srtp/crypto/include \
+	 -I$(THIRD_PARTY)/srtp/include
+
+endif
+
+#
+# Resample
+#
+AC_PJMEDIA_RESAMPLE=@ac_pjmedia_resample@
+
+ifeq ($(AC_PJMEDIA_RESAMPLE),none)
+# No resample support
+export CFLAGS += -DPJMEDIA_RESAMPLE_IMP=PJMEDIA_RESAMPLE_NONE
+endif
+
+ifeq ($(AC_PJMEDIA_RESAMPLE),libresample)
+export CFLAGS += -DPJMEDIA_RESAMPLE_IMP=PJMEDIA_RESAMPLE_LIBRESAMPLE
+endif
+
+ifeq ($(AC_PJMEDIA_RESAMPLE),libsamplerate)
+export CFLAGS += -DPJMEDIA_RESAMPLE_IMP=PJMEDIA_RESAMPLE_LIBSAMPLERATE
+endif
+
+ifeq ($(AC_PJMEDIA_RESAMPLE),speex)
+export CFLAGS += -DPJMEDIA_RESAMPLE_IMP=PJMEDIA_RESAMPLE_SPEEX
+endif
+
+#
 # PortAudio
 #
 ifneq ($(findstring pa,$(AC_PJMEDIA_SND)),)