Cmake: Create a single static library including port

Modify portable/CMakeLists.txt to create only one static library containing both the common kernel code and kernel port.

Change the freertos_kernel_port target from a STATIC library to an OBJECT library and introduce a new freertos_kernel_port_headers  INTERFACE library target.

---------

Co-authored-by: ABARNAT <ahmed.barnat@actia-engineering.tn>
Co-authored-by: Soren Ptak <ptaksoren@gmail.com>
Co-authored-by: Gaurav-Aggarwal-AWS <33462878+aggarg@users.noreply.github.com>

CMakeLists.txt

@@ -217,16 +217,17 @@ elseif((FREERTOS_PORT STREQUAL "A_CUSTOM_PORT") AND (NOT TARGET freertos_kernel_
     "    port.c\n"
     "    portmacro.h\n"
     " Where FreeRTOSCustomPort/CMakeLists.txt is a modified version of:\n"
-    "   add_library(freertos_kernel_port STATIC)\n"
+    "   add_library(freertos_kernel_port OBJECT)\n"
     "   target_sources(freertos_kernel_port\n"
     "     PRIVATE\n"
     "       port.c\n"
     "       portmacro.h)\n"
-    "   target_include_directories(freertos_kernel_port\n"
-    "     PUBLIC\n"
+    "   add_library(freertos_kernel_port_headers INTERFACE)\n"
+    "     target_include_directories(freertos_kernel_port_headers INTERFACE \n"
     "      .)\n"
     "   target_link_libraries(freertos_kernel_port\n"
     "     PRIVATE\n"
+    "       freertos_kernel_port_headers\n"
     "       freertos_kernel_include)")
 endif()
 
@@ -257,8 +258,11 @@ endif()
 
 target_link_libraries(freertos_kernel
     PUBLIC
-        freertos_kernel_port
         freertos_kernel_include
+        freertos_kernel_port_headers
+    PRIVATE
+        freertos_kernel_port
+
 )
 
 ########################################################################

portable/CMakeLists.txt

@@ -15,7 +15,7 @@ endif()
 
 # FreeRTOS internal cmake file. Do not use it in user top-level project
 
-add_library(freertos_kernel_port STATIC
+add_library(freertos_kernel_port OBJECT
     # TEMPLATE Port
     $<$<STREQUAL:${FREERTOS_PORT},TEMPLATE>:
         template/port.c>
@@ -755,8 +755,9 @@ if( FREERTOS_PORT MATCHES "GCC_ARM_CM(3|4)_MPU" OR
         Common/mpu_wrappers_v2.c
     )
 endif()
+add_library(freertos_kernel_port_headers INTERFACE)
 
-target_include_directories(freertos_kernel_port PUBLIC
+target_include_directories(freertos_kernel_port_headers INTERFACE
     # TEMPLATE Port
     $<$<STREQUAL:${FREERTOS_PORT},TEMPLATE>:${CMAKE_CURRENT_LIST_DIR}/template>
 
@@ -1094,6 +1095,7 @@ target_link_libraries(freertos_kernel_port
     PUBLIC
         $<$<STREQUAL:${FREERTOS_PORT},GCC_RP2040>:pico_base_headers>
         $<$<STREQUAL:${FREERTOS_PORT},GCC_XTENSA_ESP32>:idf::esp32>
+        freertos_kernel_port_headers
     PRIVATE
         freertos_kernel_include
         $<$<STREQUAL:${FREERTOS_PORT},GCC_POSIX>:Threads::Threads>