cmake: create CMake pre-load file for calling linker script generator

Create a CMake preload file with linker settings which is then passed
to the linker script generator as preload file.

This removes the need for command invocation with long arguments.

Signed-off-by: Torsten Rasmussen <[email protected]>

Author: tejlmand

cmake/linker/armlink/target.cmake

@@ -18,6 +18,9 @@ macro(configure_linker_script linker_script_gen linker_pass_define)
   set(STEERING_FILE_ARG)
   set(STEERING_C_ARG)
   set(linker_pass_define_list ${linker_pass_define})
+  set(cmake_linker_script_settings
+      ${PROJECT_BINARY_DIR}/include/generated/ld_script_settings_${linker_pass_define}.cmake
+  )
 
   if("LINKER_ZEPHYR_FINAL" IN_LIST linker_pass_define_list)
     set(STEERING_FILE ${CMAKE_CURRENT_BINARY_DIR}/armlink_symbol_steering.steer)
@@ -26,17 +29,23 @@ macro(configure_linker_script linker_script_gen linker_pass_define)
     set(STEERING_C_ARG "-DSTEERING_C=${STEERING_C}")
   endif()
 
+  file(GENERATE OUTPUT ${cmake_linker_script_settings} CONTENT
+       "set(FORMAT \"$<TARGET_PROPERTY:linker,FORMAT>\" CACHE INTERNAL \"\")\n
+        set(ENTRY \"$<TARGET_PROPERTY:linker,ENTRY>\" CACHE INTERNAL \"\")\n
+        set(MEMORY_REGIONS \"$<TARGET_PROPERTY:linker,MEMORY_REGIONS>\" CACHE INTERNAL \"\")\n
+        set(GROUPS \"$<TARGET_PROPERTY:linker,GROUPS>\" CACHE INTERNAL \"\")\n
+        set(SECTIONS \"$<TARGET_PROPERTY:linker,SECTIONS>\" CACHE INTERNAL \"\")\n
+        set(SECTION_SETTINGS \"$<TARGET_PROPERTY:linker,SECTION_SETTINGS>\" CACHE INTERNAL \"\")\n
+        set(SYMBOLS \"$<TARGET_PROPERTY:linker,SYMBOLS>\" CACHE INTERNAL \"\")\n
+       "
+    )
   add_custom_command(
     OUTPUT ${linker_script_gen}
            ${STEERING_FILE}
            ${STEERING_C}
     COMMAND ${CMAKE_COMMAND}
+      -C ${cmake_linker_script_settings}
       -DPASS="${linker_pass_define}"
-      -DMEMORY_REGIONS="$<TARGET_PROPERTY:linker,MEMORY_REGIONS>"
-      -DGROUPS="$<TARGET_PROPERTY:linker,GROUPS>"
-      -DSECTIONS="$<TARGET_PROPERTY:linker,SECTIONS>"
-      -DSECTION_SETTINGS="$<TARGET_PROPERTY:linker,SECTION_SETTINGS>"
-      -DSYMBOLS="$<TARGET_PROPERTY:linker,SYMBOLS>"
       ${STEERING_FILE_ARG}
       ${STEERING_C_ARG}
       -DOUT_FILE=${CMAKE_CURRENT_BINARY_DIR}/${linker_script_gen}

cmake/linker/ld/target.cmake

@@ -18,22 +18,29 @@ endif()
 # NOTE: ${linker_script_gen} will be produced at build-time; not at configure-time
 macro(configure_linker_script linker_script_gen linker_pass_define)
   set(extra_dependencies ${ARGN})
+  set(cmake_linker_script_settings
+      ${PROJECT_BINARY_DIR}/include/generated/ld_script_settings_${linker_pass_define}.cmake
+  )
 
   if(CONFIG_CMAKE_LINKER_GENERATOR)
+    file(GENERATE OUTPUT ${cmake_linker_script_settings} CONTENT
+         "set(FORMAT \"$<TARGET_PROPERTY:linker,FORMAT>\" CACHE INTERNAL \"\")\n
+          set(ENTRY \"$<TARGET_PROPERTY:linker,ENTRY>\" CACHE INTERNAL \"\")\n
+          set(MEMORY_REGIONS \"$<TARGET_PROPERTY:linker,MEMORY_REGIONS>\" CACHE INTERNAL \"\")\n
+          set(GROUPS \"$<TARGET_PROPERTY:linker,GROUPS>\" CACHE INTERNAL \"\")\n
+          set(SECTIONS \"$<TARGET_PROPERTY:linker,SECTIONS>\" CACHE INTERNAL \"\")\n
+          set(SECTION_SETTINGS \"$<TARGET_PROPERTY:linker,SECTION_SETTINGS>\" CACHE INTERNAL \"\")\n
+          set(SYMBOLS \"$<TARGET_PROPERTY:linker,SYMBOLS>\" CACHE INTERNAL \"\")\n
+         "
+    )
     add_custom_command(
       OUTPUT ${linker_script_gen}
       COMMAND ${CMAKE_COMMAND}
+        -C ${cmake_linker_script_settings}
         -DPASS="${linker_pass_define}"
-        -DFORMAT="$<TARGET_PROPERTY:linker,FORMAT>"
-        -DENTRY="$<TARGET_PROPERTY:linker,ENTRY>"
-        -DMEMORY_REGIONS="$<TARGET_PROPERTY:linker,MEMORY_REGIONS>"
-        -DGROUPS="$<TARGET_PROPERTY:linker,GROUPS>"
-        -DSECTIONS="$<TARGET_PROPERTY:linker,SECTIONS>"
-        -DSECTION_SETTINGS="$<TARGET_PROPERTY:linker,SECTION_SETTINGS>"
-        -DSYMBOLS="$<TARGET_PROPERTY:linker,SYMBOLS>"
         -DOUT_FILE=${CMAKE_CURRENT_BINARY_DIR}/${linker_script_gen}
         -P ${ZEPHYR_BASE}/cmake/linker/ld/ld_script.cmake
-      )
+    )
   else()
     set(template_script_defines ${linker_pass_define})
     list(TRANSFORM template_script_defines PREPEND "-D")