software/osie-coupler: fix compilation

We need to fix the rpath to pass the software release test.

component/mbedtls/buildout.cfg

 [buildout]
+extends =
+  ../cmake/buildout.cfg
 parts = mbedtls
 
 [mbedtls]
@@ -6,5 +8,8 @@ recipe = slapos.recipe.cmmi
 url = https://github.com/Mbed-TLS/mbedtls/archive/refs/tags/v2.28.2.tar.gz
 md5sum = 421c47c18ef46095e3ad38ffc0543e11
 shared = true
-configure-command = echo 
+configure-command = cmake -DUSE_SHARED_MBEDTLS_LIBRARY=On -DCMAKE_INSTALL_PREFIX=
+environment =
+  PATH=${cmake:location}/bin:%(PATH)s
+  LDFLAGS=-Wl,-rpath=@@LOCATION@@/lib/
 make-targets = install DESTDIR=@@LOCATION@@

software/osie-coupler/software.cfg

 [buildout]
 parts =
-  mbedtls
   open62541
   compile-coupler
   slapos-cookbook
@@ -13,11 +12,6 @@ extends =
   ../../stack/monitor/buildout.cfg
   ../../stack/slapos.cfg
 
-# we need to build mbedtls as a shared library
-[mbedtls]
-recipe = slapos.recipe.cmmi
-configure-command = ${cmake:location}/bin/cmake -DUSE_SHARED_MBEDTLS_LIBRARY=On -DCMAKE_INSTALL_PREFIX=
-
 # we need open62541's sources even after compiling and linking in [open62541]
 # section. Reasons is that coupler's C application depends on it.
 [open62541-source]
@@ -43,6 +37,8 @@ configure-options =
   -DMBEDCRYPTO_LIBRARY=${mbedtls:location}/lib/libmbedcrypto.so
   -DUA_ENABLE_PUBSUB_INFORMATIONMODEL=ON
   -DUA_ENABLE_PUBSUB_MQTT=ON
+environment +=
+  LDFLAGS=-L${mbedtls:location}/lib -Wl,-rpath=${mbedtls:location}/lib
 
 [osie-repository]
 recipe  = slapos.recipe.build:gitclone
@@ -53,11 +49,11 @@ revision = 524eff9cf3461983fb391eb6912d1a21585573a9
 [compile-coupler]
 recipe = slapos.recipe.cmmi
 path = ${osie-repository:location}/coupler/opc-ua-server/
-home = ${compile-coupler:path}/bin/
+bin_dir = ${:path}/bin/
 environment =
   OPEN62541_HOME = ${open62541:location}
   OPEN62541_SOURCE_HOME = ${open62541-source:location}
-  C_COMPILER_EXTRA_FLAGS = -L ${mbedtls:location}/lib  -lmbedtls -lmbedx509 -lmbedcrypto -l:libopen62541.so -L${open62541:location}/lib -I${open62541:location}/include -I${open62541-source:location}/src/pubsub/ -I${open62541-source:location}/deps
+  C_COMPILER_EXTRA_FLAGS = -L ${mbedtls:location}/lib -Wl,-rpath=${mbedtls:location}/lib -l:libopen62541.so -L${open62541:location}/lib -Wl,-rpath=${open62541:location}/lib -I${open62541:location}/include -I${open62541-source:location}/src/pubsub/ -I${open62541-source:location}/deps
 configure-command = true
 
 [instance-profile]
@@ -71,4 +67,4 @@ context =
   raw template_monitor ${monitor2-template:output}
   key open62541_location open62541:location
   key mbedtls_location mbedtls:location
-  key coupler_location compile-coupler:home
+  key coupler_location compile-coupler:bin_dir