package/libcoap: bump to version 4.3.0

- disable examples source which is enabled by default since
  https://github.com/obgm/libcoap/commit/feb8c15b4572569716cf1c037092edb4717ca537
- mbedtls is an optional dependency since
  https://github.com/obgm/libcoap/commit/f601ddbf78720a74f29acb704256bc2655c4aeaa
- Add Apache-2.0 for mbedtls to LICENSE:
  https://github.com/obgm/libcoap/commit/0fccf2e71347af0ef3973ac565fca110ec3d4f40

Since mbedtls is not bundled but comes from the Buildroot package, we
don't need to declare the Apache-2.0 license for libcoap. It only
applies to mbedtls.

https://github.com/obgm/libcoap/blob/v4.3.0/ChangeLog

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/libcoap/libcoap.hash

@@ -1,4 +1,4 @@
 # Locally calculated
-sha256  29a0394a265d3febee41e5e2dc03d34292a0aede37f5f80334e529ac0dab2321  libcoap-4.2.1.tar.gz
+sha256  1a195adacd6188d3b71c476e7b21706fef7f3663ab1fb138652e8da49a9ec556  libcoap-4.3.0.tar.gz
 sha256  09dd86a017bad210527085008cbf706609c58210897b69845af14099577e7eb7  COPYING
-sha256  c51e85271aca3fbdd79bb4ee45dcfd854724538dad83b70afbbdfc62415e3e7f  LICENSE
+sha256  c5625e704d52deade1c9b2d7931ac8593be147ba63af62b53b8c7e309b7eaeb9  LICENSE

package/libcoap/libcoap.mk

@@ -4,21 +4,28 @@
 #
 ################################################################################
 
-LIBCOAP_VERSION = 4.2.1
+LIBCOAP_VERSION = 4.3.0
 LIBCOAP_SITE = $(call github,obgm,libcoap,v$(LIBCOAP_VERSION))
 LIBCOAP_INSTALL_STAGING = YES
 LIBCOAP_LICENSE = BSD-2-Clause
 LIBCOAP_LICENSE_FILES = COPYING LICENSE
 LIBCOAP_DEPENDENCIES = host-pkgconf
-LIBCOAP_CONF_OPTS = --disable-examples --without-tinydtls
+LIBCOAP_CONF_OPTS = \
+	--disable-examples --disable-examples-source --without-tinydtls
 LIBCOAP_AUTORECONF = YES
 
 ifeq ($(BR2_PACKAGE_GNUTLS),y)
 LIBCOAP_DEPENDENCIES += gnutls
-LIBCOAP_CONF_OPTS += --enable-dtls --with-gnutls --without-openssl
+LIBCOAP_CONF_OPTS += \
+	--enable-dtls --with-gnutls --without-mbedtls --without-openssl
 else ifeq ($(BR2_PACKAGE_OPENSSL),y)
 LIBCOAP_DEPENDENCIES += openssl
-LIBCOAP_CONF_OPTS += --enable-dtls --without-gnutls --with-openssl
+LIBCOAP_CONF_OPTS += \
+	--enable-dtls --without-gnutls --without-mbedtls --with-openssl
+else ifeq ($(BR2_PACKAGE_MBEDTLS),y)
+LIBCOAP_DEPENDENCIES += mbedtls
+LIBCOAP_CONF_OPTS += \
+	--enable-dtls --without-gnutls --with-mbedtls --without-openssl
 else
 LIBCOAP_CONF_OPTS += --disable-dtls
 endif