openssl: Make usage of engine support optional

This is required for some third-party components on specific devices.

Change-Id: I35c3cfcf603bc720f6e6697b3c745a74b459b4e7

android-config.mk

@@ -13,5 +13,9 @@ LOCAL_CFLAGS += -DOPENSSL_NO_CAMELLIA -DOPENSSL_NO_CAPIENG -DOPENSSL_NO_CAST -DO
 # Extra
 LOCAL_CFLAGS += -DOPENSSL_NO_HW -DOPENSSL_NO_ENGINE -DZLIB
 
+ifneq ($(BOARD_USE_OPENSSL_ENGINE),true)
+LOCAL_CFLAGS += -DOPENSSL_NO_ENGINE
+endif
+
 # Debug
 # LOCAL_CFLAGS += -DCIPHER_DEBUG

crypto/Android.mk

@@ -470,6 +470,31 @@ local_src_files := \
 	x509v3/v3_utl.c \
 	x509v3/v3err.c
 
+ifeq ($(BOARD_USE_OPENSSL_ENGINE),true)
+LOCAL_SRC_FILES += \
+       engine/eng_err.c \
+       engine/eng_lib.c \
+       engine/eng_list.c \
+       engine/eng_init.c \
+       engine/eng_ctrl.c \
+       engine/eng_table.c \
+       engine/eng_padlock.c \
+       engine/eng_pkey.c \
+       engine/eng_fat.c \
+       engine/eng_all.c \
+       engine/tb_cipher.c \
+       engine/tb_dh.c \
+       engine/tb_digest.c \
+       engine/tb_dsa.c \
+       engine/tb_ecdsa.c \
+       engine/tb_rand.c \
+       engine/tb_rsa.c \
+       engine/tb_store.c \
+       engine/eng_openssl.c \
+       engine/eng_dyn.c \
+       engine/eng_cnf.c
+endif
+
 local_c_includes := \
 	external/openssl \
 	external/openssl/crypto/asn1 \