diff --git a/cmake/bintools/gnu/target_bintools.cmake b/cmake/bintools/gnu/target_bintools.cmake
index e8cb6e181d55af..8aac55b0400cdc 100644
--- a/cmake/bintools/gnu/target_bintools.cmake
+++ b/cmake/bintools/gnu/target_bintools.cmake
@@ -93,6 +93,7 @@ set_property(TARGET bintools PROPERTY strip_flag_final "")
 set_property(TARGET bintools PROPERTY strip_flag_all --strip-all)
 set_property(TARGET bintools PROPERTY strip_flag_debug --strip-debug)
 set_property(TARGET bintools PROPERTY strip_flag_dwo --strip-dwo)
+set_property(TARGET bintools PROPERTY strip_flag_remove_section -R )
 
 set_property(TARGET bintools PROPERTY strip_flag_infile "")
 set_property(TARGET bintools PROPERTY strip_flag_outfile -o )
diff --git a/cmake/compiler/gcc/target.cmake b/cmake/compiler/gcc/target.cmake
index 86807bd8a4f69d..5b1e5db12180a3 100644
--- a/cmake/compiler/gcc/target.cmake
+++ b/cmake/compiler/gcc/target.cmake
@@ -76,6 +76,8 @@ elseif("${ARCH}" STREQUAL "sparc")
   include(${CMAKE_CURRENT_LIST_DIR}/target_sparc.cmake)
 elseif("${ARCH}" STREQUAL "mips")
   include(${CMAKE_CURRENT_LIST_DIR}/target_mips.cmake)
+elseif("${ARCH}" STREQUAL "xtensa")
+  include(${CMAKE_CURRENT_LIST_DIR}/target_xtensa.cmake)
 endif()
 
 if(SYSROOT_DIR)
diff --git a/cmake/compiler/gcc/target_arm.cmake b/cmake/compiler/gcc/target_arm.cmake
index a813c2563a3b0b..6659c7bf417018 100644
--- a/cmake/compiler/gcc/target_arm.cmake
+++ b/cmake/compiler/gcc/target_arm.cmake
@@ -41,3 +41,22 @@ endif()
 
 list(APPEND TOOLCHAIN_C_FLAGS ${ARM_C_FLAGS})
 list(APPEND TOOLCHAIN_LD_FLAGS NO_SPLIT ${ARM_C_FLAGS})
+
+# Flags not supported by llext linker
+# (regexps are supported and match whole word)
+set(LLEXT_REMOVE_FLAGS
+  -fno-pic
+  -fno-pie
+  -ffunction-sections
+  -fdata-sections
+  -g.*
+  -Os
+  -mcpu=.*
+)
+
+# Flags to be added to llext code compilation
+set(LLEXT_APPEND_FLAGS
+  -mlong-calls
+  -mthumb
+  -mcpu=cortex-m33+nodsp
+)
diff --git a/cmake/compiler/gcc/target_xtensa.cmake b/cmake/compiler/gcc/target_xtensa.cmake
new file mode 100644
index 00000000000000..177830427dbdda
--- /dev/null
+++ b/cmake/compiler/gcc/target_xtensa.cmake
@@ -0,0 +1,21 @@
+# SPDX-License-Identifier: Apache-2.0
+
+# Flags not supported by llext linker
+# (regexps are supported and match whole word)
+set(LLEXT_REMOVE_FLAGS
+  -fno-pic
+  -fno-pie
+  -ffunction-sections
+  -fdata-sections
+  -g.*
+  -Os
+  -mcpu=.*
+)
+
+# Flags to be added to llext code compilation
+set(LLEXT_APPEND_FLAGS
+  -fPIC
+  -nostdlib
+  -nodefaultlibs
+  -shared
+)
diff --git a/cmake/modules/extensions.cmake b/cmake/modules/extensions.cmake
index 0d50385d8ce095..b51ff49d2fd227 100644
--- a/cmake/modules/extensions.cmake
+++ b/cmake/modules/extensions.cmake
@@ -4801,9 +4801,13 @@ endmacro()
 # Output and source files must be specified using the OUTPUT and SOURCES
 # arguments. Only one source file is currently supported.
 #
-# Arch-specific flags will be added automatically. The C_FLAGS argument
-# can be used to pass additional compiler flags to the compilation of
-# the source file.
+# The llext code will be compiled with mostly the same C compiler flags used
+# in the Zephyr build, but with some important modifications. The list of
+# flags to remove and flags to append is controlled respectively by the
+# LLEXT_REMOVE_FLAGS and LLEXT_APPEND_FLAGS global variables.
+
+# The C_FLAGS argument can be used to pass additional compiler flags to the
+# compilation of this particular llext.
 #
 # Example usage:
 #   add_llext_target(hello_world
@@ -4845,14 +4849,19 @@ function(add_llext_target target_name)
     DEPENDS ${output_file}
   )
 
-  # Define arch-specific flags for the supported architectures
-  if(CONFIG_ARM)
-    list(PREPEND LLEXT_C_FLAGS "-mlong-calls" "-mthumb")
-  elseif(CONFIG_XTENSA)
-    list(PREPEND LLEXT_C_FLAGS "-shared" "-fPIC" "-nostdlib" "-nodefaultlibs")
-  else()
-    message(FATAL_ERROR "add_llext_target: unsupported architecture")
-  endif()
+  # Convert the LLEXT_REMOVE_FLAGS list to a regular expression, and use it to
+  # filter out these flags from the Zephyr target settings
+  list(TRANSFORM LLEXT_REMOVE_FLAGS
+       REPLACE "(.+)" "^\\1$"
+       OUTPUT_VARIABLE llext_remove_flags_regexp
+  )
+  string(REPLACE ";" "|" llext_remove_flags_regexp "${llext_remove_flags_regexp}")
+  set(zephyr_flags
+      "$<TARGET_PROPERTY:zephyr_interface,INTERFACE_COMPILE_OPTIONS>"
+  )
+  set(zephyr_filtered_flags
+      "$<FILTER:${zephyr_flags},EXCLUDE,${llext_remove_flags_regexp}>"
+  )
 
   # Compile the source file to an object file using current Zephyr settings
   # but a different set of flags
@@ -4861,12 +4870,12 @@ function(add_llext_target target_name)
     $<TARGET_PROPERTY:zephyr_interface,INTERFACE_COMPILE_DEFINITIONS>
   )
   target_compile_options(${target_name}_lib PRIVATE
+    ${zephyr_filtered_flags}
+    ${LLEXT_APPEND_FLAGS}
     ${LLEXT_C_FLAGS}
-    -imacros "${AUTOCONF_H}"
   )
   target_include_directories(${target_name}_lib PRIVATE
     $<TARGET_PROPERTY:zephyr_interface,INTERFACE_INCLUDE_DIRECTORIES>
-    -I${PROJECT_BINARY_DIR}/include/generated
   )
   target_include_directories(${target_name}_lib SYSTEM PUBLIC
     $<TARGET_PROPERTY:zephyr_interface,INTERFACE_SYSTEM_INCLUDE_DIRECTORIES>
@@ -4897,14 +4906,19 @@ function(add_llext_target target_name)
     add_custom_command(
       OUTPUT ${output_file}
       BYPRODUCTS ${pre_output_file}
-      COMMAND ${CMAKE_C_COMPILER} ${LLEXT_C_FLAGS}
+      COMMAND ${CMAKE_C_COMPILER} ${LLEXT_APPEND_FLAGS}
               -o ${pre_output_file}
               $<TARGET_OBJECTS:${target_name}_lib>
-      COMMAND ${CROSS_COMPILE}strip -R .xt.*
-              -o ${output_file}
-              ${pre_output_file}
+      COMMAND $<TARGET_PROPERTY:bintools,strip_command>
+              $<TARGET_PROPERTY:bintools,strip_flag>
+              $<TARGET_PROPERTY:bintools,strip_flag_remove_section>.xt.*
+              $<TARGET_PROPERTY:bintools,strip_flag_infile>${pre_output_file}
+              $<TARGET_PROPERTY:bintools,strip_flag_outfile>${output_file}
+              $<TARGET_PROPERTY:bintools,strip_flag_final>
       DEPENDS ${target_name}_lib $<TARGET_OBJECTS:${target_name}_lib>
     )
 
+  else()
+    message(FATAL_ERROR "add_llext_target: unsupported architecture")
   endif()
 endfunction()