1 files changed, 16 insertions, 0 deletions
diff --git a/third_party/build/os-auto.mak.in b/third_party/build/os-auto.mak.in
index ef261f65..66653fa1 100644
--- a/third_party/build/os-auto.mak.in
+++ b/third_party/build/os-auto.mak.in
@@ -35,6 +35,22 @@ ifeq (@ac_external_srtp@,1)
 # External SRTP
 else
 DIRS += srtp
+
+ifeq (@ac_ssl_has_aes_gcm@,0)
+CIPHERS_SRC = crypto/cipher/aes.o crypto/cipher/aes_icm.o       \
+              crypto/cipher/aes_cbc.o
+HASHES_SRC  = crypto/hash/sha1.o crypto/hash/hmac.o 		\
+	      # crypto/hash/tmmhv2.o
+RNG_SRC     = crypto/rng/rand_source.o crypto/rng/prng.o 	\
+	      crypto/rng/ctr_prng.o
+else
+CIPHERS_SRC = crypto/cipher/aes_icm_ossl.o crypto/cipher/aes_gcm_ossl.o
+HASHES_SRC  = crypto/hash/hmac_ossl.o
+RNG_SRC     = crypto/rng/rand_source_ossl.o
+SRTP_OTHER_CFLAGS = -DOPENSSL
+endif
+
+
 endif
 
 ifeq (@ac_pjmedia_resample@,libresample)