llext-edk: (refactor) unify variable names

The variable llext_edk_cflags was used in the main CMakeLists.txt file,
while llext_cflags was used in the llext-edk.cmake file. This commit
unifies the variable names to use llext_edk_cflags in both files.

No logic changes are introduced by this commit.

Signed-off-by: Luca Burelli <[email protected]>

Author: pillo79

CMakeLists.txt

@@ -2162,7 +2162,7 @@ add_custom_command(
         -DAPPLICATION_SOURCE_DIR=${APPLICATION_SOURCE_DIR}
         -DINTERFACE_INCLUDE_DIRECTORIES="$<TARGET_PROPERTY:zephyr_interface,INTERFACE_INCLUDE_DIRECTORIES>"
         -Dllext_edk_file=${llext_edk_file}
-        -Dllext_cflags="${llext_edk_cflags}"
+        -Dllext_edk_cflags="${llext_edk_cflags}"
         -Dllext_edk_name=${CONFIG_LLEXT_EDK_NAME}
         -DWEST_TOPDIR=${WEST_TOPDIR}
         -DZEPHYR_BASE=${ZEPHYR_BASE}

cmake/llext-edk.cmake

@@ -18,7 +18,7 @@
 #   from. It should simply be the INTERFACE_INCLUDE_DIRECTORIES property of the
 #   zephyr_interface target.
 # - llext_edk_file: Output file name for the tarball.
-# - llext_cflags: Additional flags to be added to the generated flags.
+# - llext_edk_cflags: Flags to be used for source compile commands.
 # - ZEPHYR_BASE: Path to the zephyr base directory.
 # - WEST_TOPDIR: Path to the west top directory.
 # - APPLICATION_SOURCE_DIR: Path to the application source directory.
@@ -93,10 +93,10 @@ string(REGEX REPLACE "[^a-zA-Z0-9]" "_" llext_edk_name_sane ${llext_edk_name})
 string(TOUPPER ${llext_edk_name_sane} llext_edk_name_sane)
 set(install_dir_var "${llext_edk_name_sane}_INSTALL_DIR")
 
-separate_arguments(llext_cflags NATIVE_COMMAND ${llext_cflags})
+separate_arguments(llext_edk_cflags NATIVE_COMMAND ${llext_edk_cflags})
 
 set(make_relative FALSE)
-foreach(flag ${llext_cflags})
+foreach(flag ${llext_edk_cflags})
     if (flag STREQUAL "-imacros")
         set(make_relative TRUE)
     elseif (make_relative)
@@ -116,11 +116,10 @@ foreach(flag ${llext_cflags})
         list(APPEND new_cflags ${flag})
     endif()
 endforeach()
-set(llext_cflags ${new_cflags})
+set(llext_edk_cflags ${new_cflags})
 
-
-list(APPEND base_flags_make ${llext_cflags} ${imacros_make} -DLL_EXTENSION_BUILD)
-list(APPEND base_flags_cmake ${llext_cflags} ${imacros_cmake} -DLL_EXTENSION_BUILD)
+list(APPEND base_flags_make ${llext_edk_cflags} ${imacros_make} -DLL_EXTENSION_BUILD)
+list(APPEND base_flags_cmake ${llext_edk_cflags} ${imacros_cmake} -DLL_EXTENSION_BUILD)
 
 separate_arguments(include_dirs NATIVE_COMMAND ${INTERFACE_INCLUDE_DIRECTORIES})
 file(MAKE_DIRECTORY ${llext_edk_inc})