[nrf noup] cmake: Port lib/posix to multi-image

Port lib/posix to be compatible with multi-image.

Signed-off-by: Sebastian Bøe <[email protected]>

Author: SebastianBoe

lib/posix/CMakeLists.txt

@@ -3,8 +3,10 @@
 
 zephyr_interface_library_named(posix_subsys)
 
+set(posix_subsys ${IMAGE}posix_subsys)
+
 if(CONFIG_POSIX_API)
-  target_include_directories(posix_subsys INTERFACE ${ZEPHYR_BASE}/include/posix)
+  target_include_directories(${posix_subsys} INTERFACE ${ZEPHYR_BASE}/include/posix)
 endif()
 
 zephyr_library()
@@ -23,4 +25,4 @@ zephyr_library_sources_ifdef(CONFIG_PTHREAD_IPC pthread_key.c)
 zephyr_library_sources_ifdef(CONFIG_POSIX_MQUEUE mqueue.c)
 zephyr_library_sources_ifdef(CONFIG_POSIX_FS fs.c)
 
-zephyr_library_link_libraries(posix_subsys)
+zephyr_library_link_libraries(${posix_subsys})