[Buildroot] [PATCH 1/2] package/libiec61850: add mbedtls optional dependency

[Fabrice Fontaine]

mbedtls is an optional dependency since bump to version 1.5.0 in
commit a42e0e4600be785fa750c6b481c41a76d041df03 and
https://github.com/mz-automation/libiec61850/commit/19f2cbf0e7066753476ff8c38c07a6f0df73a622

Signed-off-by: Fabrice Fontaine <fontaine.fabrice at gmail.com>
---
 package/libiec61850/libiec61850.mk | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/package/libiec61850/libiec61850.mk b/package/libiec61850/libiec61850.mk
index 4b61e40c6d..a3cfb74b03 100644
--- a/package/libiec61850/libiec61850.mk
+++ b/package/libiec61850/libiec61850.mk
@@ -15,4 +15,11 @@ LIBIEC61850_CONF_OPTS = -DBUILD_PYTHON_BINDINGS=OFF
 # https://github.com/mz-automation/libiec61850/issues/442
 LIBIEC61850_IGNORE_CVES += CVE-2023-27772
 
+ifeq ($(BR2_PACKAGE_MBEDTLS),y)
+LIBIEC61850_DEPENDENCIES += mbedtls
+LIBIEC61850_CONF_OPTS += -DCONFIG_USE_EXTERNAL_MBEDTLS_DYNLIB=ON
+else
+LIBIEC61850_CONF_OPTS += -DCONFIG_USE_EXTERNAL_MBEDTLS_DYNLIB=OFF
+endif
+
 $(eval $(cmake-package))
-- 
2.43.0