meta-digi-dey: add mbedtls recipe

mbedTLS is an open source, portable, easy to use, readable and flexible SSL
library.

https://jira.digi.com/browse/DEL-4101

Signed-off-by: Tatiana Leon <tatiana.leon@digi.com>

meta-digi-dey/recipes-connectivity/mbedtls/mbedtls-2.1.1/0001-mbedtls-library-add-pkg-config-file.patch

@@ -0,0 +1,41 @@
+From: Tatiana Leon <tatiana.leon@digi.com>
+Date: Fri, 28 Apr 2017 14:47:43 +0200
+Subject: [PATCH] mbedtls library: add pkg-config file
+
+Signed-off-by: Tatiana Leon <tatiana.leon@digi.com>
+---
+ CMakeLists.txt |  4 ++++
+ mbedtls.pc.in  | 12 ++++++++++++
+ 2 files changed, 16 insertions(+)
+ create mode 100644 mbedtls.pc.in
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 094d906..b662eee 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -124,3 +124,7 @@ if(ENABLE_TESTING)
+         )
+     endif(UNIX)
+ endif()
++
++SET(prefix ${CMAKE_INSTALL_PREFIX})
++CONFIGURE_FILE(${CMAKE_SOURCE_DIR}/mbedtls.pc.in ${CMAKE_BINARY_DIR}/mbedtls.pc @ONLY)
++INSTALL(FILES ${CMAKE_BINARY_DIR}/mbedtls.pc DESTINATION ${LIB_INSTALL_DIR}/pkgconfig)
+diff --git a/mbedtls.pc.in b/mbedtls.pc.in
+new file mode 100644
+index 0000000..9eff4ac
+--- /dev/null
++++ b/mbedtls.pc.in
+@@ -0,0 +1,12 @@
++prefix=@prefix@
++exec_prefix=${prefix}
++libdir=${exec_prefix}/lib
++includedir=${prefix}/include
++
++Name: mbedtls
++Description: Light-weight open source cryptographic and SSL/TLS library
++Version: 2.1.1
++
++Libs: -L${libdir} -lmbedtls -lmbedcrypto -lmbedx509
++Cflags: -I${includedir}/mbedtls
++

meta-digi-dey/recipes-connectivity/mbedtls/mbedtls_2.1.1.bb

@@ -0,0 +1,47 @@
+# Copyright (C) 2017 Digi International.
+
+SUMMARY = "An open source, portable, easy to use, readable and flexible SSL \
+library"
+DESCRIPTION = "mbedtls is a lean open source crypto library          \
+for providing SSL and TLS support in your programs. It offers        \
+an intuitive API and documented header files, so you can actually    \
+understand what the code does. It features:                          \
+                                                                     \
+ - Symmetric algorithms, like AES, Blowfish, Triple-DES, DES, ARC4,  \
+   Camellia and XTEA                                                 \
+ - Hash algorithms, like SHA-1, SHA-2, RIPEMD-160 and MD5            \
+ - Entropy pool and random generators, like CTR-DRBG and HMAC-DRBG   \
+ - Public key algorithms, like RSA, Elliptic Curves, Diffie-Hellman, \
+   ECDSA and ECDH                                                    \
+ - SSL v3 and TLS 1.0, 1.1 and 1.2                                   \
+ - Abstraction layers for ciphers, hashes, public key operations,    \
+   platform abstraction and threading                                \
+"
+
+HOMEPAGE = "https://tls.mbed.org/"
+SECTION = "libdevel"
+BUGTRACKER = "https://github.com/ARMmbed/mbedtls/issues"
+LICENSE = "Apache-2.0"
+LIC_FILES_CHKSUM = "file://LICENSE;md5=302d50a6369f5f22efdb674db908167a"
+
+SRC_URI = " \
+    https://github.com/ARMmbed/mbedtls/archive/${PN}-${PV}.tar.gz \
+    file://0001-mbedtls-library-add-pkg-config-file.patch \
+"
+SRC_URI[md5sum] = "6f5d3e7154ce4e04bcb9b299f614775f"
+SRC_URI[sha256sum] = "ae458a4987f36819bdf1d39519212f4063780fe448d4155878fccf4e782a715f"
+
+S = "${WORKDIR}/${PN}-${PN}-${PV}"
+
+inherit cmake
+
+EXTRA_OECMAKE = " \
+    -DENABLE_PROGRAMS:BOOL=OFF \
+    -DENABLE_TESTING:BOOL=OFF \
+    -DUSE_STATIC_MBEDTLS_LIBRARY:BOOL=ON \
+    -DUSE_SHARED_MBEDTLS_LIBRARY:BOOL=ON \
+    -DLIB_INSTALL_DIR:STRING=${libdir} \
+    -DCMAKE_INSTALL_PREFIX:PATH=${prefix} \
+"
+
+ALLOW_EMPTY_${PN} = "1"