diff --git a/bl1/tbbr/tbbr_img_desc.c b/bl1/tbbr/tbbr_img_desc.c
index f2ed1a1..44f58d3 100644
--- a/bl1/tbbr/tbbr_img_desc.c
+++ b/bl1/tbbr/tbbr_img_desc.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-2016, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -7,6 +7,7 @@
 #include <bl1.h>
 #include <bl_common.h>
 #include <platform_def.h>
+#include <tbbr/tbbr_img_desc.h>
 
 image_desc_t bl1_tbbr_image_descs[] = {
     {
diff --git a/drivers/auth/crypto_mod.c b/drivers/auth/crypto_mod.c
index 3b3e3ac..4cd0550 100644
--- a/drivers/auth/crypto_mod.c
+++ b/drivers/auth/crypto_mod.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -9,7 +9,6 @@
 #include <debug.h>
 
 /* Variable exported by the crypto library through REGISTER_CRYPTO_LIB() */
-extern const crypto_lib_desc_t crypto_lib_desc;
 
 /*
  * The crypto module is responsible for verifying digital signatures and hashes.
diff --git a/drivers/auth/mbedtls/mbedtls_common.c b/drivers/auth/mbedtls/mbedtls_common.c
index 205c243..c048d00 100644
--- a/drivers/auth/mbedtls/mbedtls_common.c
+++ b/drivers/auth/mbedtls/mbedtls_common.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -10,6 +10,7 @@
 #include <mbedtls/memory_buffer_alloc.h>
 #include <mbedtls/platform.h>
 #include <mbedtls_config.h>
+#include <mbedtls_common.h>
 
 /*
  * mbed TLS heap
diff --git a/include/drivers/auth/auth_mod.h b/include/drivers/auth/auth_mod.h
index 74fc15f..bb3b8f9 100644
--- a/include/drivers/auth/auth_mod.h
+++ b/include/drivers/auth/auth_mod.h
@@ -44,6 +44,9 @@
 			(const auth_img_desc_t *const)&_cot[0]; \
 	unsigned int auth_img_flags[MAX_NUMBER_IDS]
 
+extern const auth_img_desc_t *const cot_desc_ptr;
+extern unsigned int auth_img_flags[MAX_NUMBER_IDS];
+
 #endif /* TRUSTED_BOARD_BOOT */
 
 #endif /* __AUTH_MOD_H__ */
diff --git a/include/drivers/auth/crypto_mod.h b/include/drivers/auth/crypto_mod.h
index 7a1b6b8..f9b44d1 100644
--- a/include/drivers/auth/crypto_mod.h
+++ b/include/drivers/auth/crypto_mod.h
@@ -57,4 +57,6 @@
 		.verify_hash = _verify_hash \
 	}
 
+extern const crypto_lib_desc_t crypto_lib_desc;
+
 #endif /* __CRYPTO_MOD_H__ */
diff --git a/plat/arm/common/arm_bl1_fwu.c b/plat/arm/common/arm_bl1_fwu.c
index 1305934..f2be477 100644
--- a/plat/arm/common/arm_bl1_fwu.c
+++ b/plat/arm/common/arm_bl1_fwu.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-2016, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -9,6 +9,7 @@
 #include <debug.h>
 #include <errno.h>
 #include <plat_arm.h>
+#include <platform.h>
 #include <platform_def.h>
 #include <tbbr_img_desc.h>
 #include <utils.h>
@@ -19,7 +20,7 @@
 	unsigned int mem_size;
 } bl1_mem_info_t;
 
-bl1_mem_info_t fwu_addr_map_secure[] = {
+static bl1_mem_info_t fwu_addr_map_secure[] = {
 	{
 		.mem_base = ARM_SHARED_RAM_BASE,
 		.mem_size = ARM_SHARED_RAM_SIZE
@@ -29,7 +30,7 @@
 	}
 };
 
-bl1_mem_info_t fwu_addr_map_non_secure[] = {
+static bl1_mem_info_t fwu_addr_map_non_secure[] = {
 	{
 		.mem_base = ARM_NS_DRAM1_BASE,
 		.mem_size = ARM_NS_DRAM1_SIZE