--- /dev/null
+From 7f8d9359dcf9edbb13bb447f70234397afa4fb05 Mon Sep 17 00:00:00 2001
+From: Carlos Santos <casantos@datacom.ind.br>
+Date: Tue, 30 Jan 2018 11:21:14 -0200
+Subject: [PATCH] Fix build with LibreSSL
+
+OPENSSL_VERSION_NUMBER is used to test the version of OpenSSL but this
+test alone breaks the build with LibreSSL due to implicit declarations
+of functions 'RSA_set0_key' and 'HMAC_CTX_free'.
+
+Test if OpenSSL < 1.1.0 or LIBRESSL_VERSION_NUMBER is defined, instead.
+
+Signed-off-by: Carlos Santos <casantos@datacom.ind.br>
+---
+ lib/conversion.c | 2 +-
+ lib/tpm_kdfa.c | 6 +++---
+ 2 files changed, 4 insertions(+), 4 deletions(-)
+
+diff --git a/lib/conversion.c b/lib/conversion.c
+index 1d0a0b7..df02de4 100644
+--- a/lib/conversion.c
++++ b/lib/conversion.c
+@@ -133,7 +133,7 @@ static bool tpm2_convert_pubkey_ssl(TPMT_PUBLIC *public, pubkey_format format, c
+ goto error;
+ }
+
+-#if OPENSSL_VERSION_NUMBER < 0x1010000fL /* OpenSSL 1.1.0 */
++#if OPENSSL_VERSION_NUMBER < 0x1010000fL || defined(LIBRESSL_VERSION_NUMBER) /* OpenSSL 1.1.0 */
+ ssl_rsa_key->e = e;
+ ssl_rsa_key->n = n;
+ #else
+diff --git a/lib/tpm_kdfa.c b/lib/tpm_kdfa.c
+index ee3cf8a..e43bdeb 100644
+--- a/lib/tpm_kdfa.c
++++ b/lib/tpm_kdfa.c
+@@ -54,7 +54,7 @@ static const EVP_MD *tpm_algorithm_to_openssl_digest(TPMI_ALG_HASH algorithm) {
+ static HMAC_CTX *hmac_alloc()
+ {
+ HMAC_CTX *ctx;
+-#if OPENSSL_VERSION_NUMBER < 0x1010000fL /* OpenSSL 1.1.0 */
++#if OPENSSL_VERSION_NUMBER < 0x1010000fL || defined(LIBRESSL_VERSION_NUMBER) /* OpenSSL 1.1.0 */
+ ctx = malloc(sizeof(*ctx));
+ #else
+ ctx = HMAC_CTX_new();
+@@ -62,7 +62,7 @@ static HMAC_CTX *hmac_alloc()
+ if (!ctx)
+ return NULL;
+
+-#if OPENSSL_VERSION_NUMBER < 0x1010000fL
++#if OPENSSL_VERSION_NUMBER < 0x1010000fL || defined(LIBRESSL_VERSION_NUMBER)
+ HMAC_CTX_init(ctx);
+ #endif
+
+@@ -71,7 +71,7 @@ static HMAC_CTX *hmac_alloc()
+
+ static void hmac_del(HMAC_CTX *ctx)
+ {
+-#if OPENSSL_VERSION_NUMBER < 0x1010000fL
++#if OPENSSL_VERSION_NUMBER < 0x1010000fL || defined(LIBRESSL_VERSION_NUMBER)
+ HMAC_CTX_cleanup(ctx);
+ free(ctx);
+ #else
+--
+2.14.3
+
--- /dev/null
+config BR2_PACKAGE_TPM2_TOOLS
+ bool "tpm2-tools"
+ select BR2_PACKAGE_DBUS
+ select BR2_PACKAGE_LIBCURL
+ select BR2_PACKAGE_LIBGLIB2
+ select BR2_PACKAGE_OPENSSL
+ select BR2_PACKAGE_TPM2_ABRMD # run-time
+ select BR2_PACKAGE_TPM2_TSS
+ help
+ TPM (Trusted Platform Module) 2.0 CLI tools based on system
+ API of TPM2-TSS. These tools can be used to manage keys,
+ perform encryption/decryption/signing/etc crypto operations,
+ and manage non-volatile storage through a TPM2.0 HW
+ implementation.
+
+ https://github.com/tpm2-software/tpm2-tools
--- /dev/null
+################################################################################
+#
+# tpm2-tools
+#
+################################################################################
+
+TPM2_TOOLS_VERSION = 3.0.3
+TPM2_TOOLS_SITE = https://github.com/tpm2-software/tpm2-tools/releases/download/$(TPM2_TOOLS_VERSION)
+TPM2_TOOLS_LICENSE = BSD-2-Clause
+TPM2_TOOLS_LICENSE_FILES = LICENSE
+TPM2_TOOLS_DEPENDENCIES = dbus libcurl libglib2 openssl tpm2-tss host-pkgconf
+
+$(eval $(autotools-package))