diff --git a/boards/st/b_u585i_iot02a/CMakeLists.txt b/boards/st/b_u585i_iot02a/CMakeLists.txt
deleted file mode 100644
index f6ca91f1a73b..000000000000
--- a/boards/st/b_u585i_iot02a/CMakeLists.txt
+++ /dev/null
@@ -1,15 +0,0 @@
-# SPDX-License-Identifier: Apache-2.0
-
-# Define the toolchain to be used (by eg CI)
-if(${ZEPHYR_TOOLCHAIN_VARIANT} STREQUAL "zephyr")
-  set(COMPILER_FULL_PATH ${ZEPHYR_SDK_INSTALL_DIR}/arm-zephyr-eabi/bin/arm-zephyr-eabi-gcc)
-elseif(${ZEPHYR_TOOLCHAIN_VARIANT} STREQUAL "gnuarmemb")
-  set(COMPILER_FULL_PATH ${GNUARMEMB_TOOLCHAIN_PATH}/bin/arm-none-eabi-gcc)
-endif()
-
-if(CONFIG_BUILD_WITH_TFM)
-  set_property(GLOBAL APPEND PROPERTY extra_post_build_commands
-    #Execute post build script postbuild.sh
-    COMMAND $<TARGET_PROPERTY:tfm,TFM_BINARY_DIR>/api_ns/postbuild.sh ${COMPILER_FULL_PATH}
-  )
-endif()
diff --git a/boards/st/nucleo_l552ze_q/CMakeLists.txt b/boards/st/nucleo_l552ze_q/CMakeLists.txt
deleted file mode 100644
index 260ecca27072..000000000000
--- a/boards/st/nucleo_l552ze_q/CMakeLists.txt
+++ /dev/null
@@ -1,15 +0,0 @@
-# SPDX-License-Identifier: Apache-2.0
-
-# Define the toolchain to be used (by eg CI)
-if(${ZEPHYR_TOOLCHAIN_VARIANT} STREQUAL "zephyr")
-	set(COMPILER_FULL_PATH ${ZEPHYR_SDK_INSTALL_DIR}/arm-zephyr-eabi/bin/arm-zephyr-eabi-gcc)
-elseif(${ZEPHYR_TOOLCHAIN_VARIANT} STREQUAL "gnuarmemb")
-	set(COMPILER_FULL_PATH ${GNUARMEMB_TOOLCHAIN_PATH}/bin/arm-none-eabi-gcc)
-endif()
-
-if (CONFIG_BUILD_WITH_TFM)
-	set_property(GLOBAL APPEND PROPERTY extra_post_build_commands
-		#Execute post build script postbuild.sh
-		COMMAND $<TARGET_PROPERTY:tfm,TFM_BINARY_DIR>/api_ns/postbuild.sh ${COMPILER_FULL_PATH}
-	)
-endif()
diff --git a/boards/st/nucleo_u575zi_q/CMakeLists.txt b/boards/st/nucleo_u575zi_q/CMakeLists.txt
deleted file mode 100644
index 5522a882264e..000000000000
--- a/boards/st/nucleo_u575zi_q/CMakeLists.txt
+++ /dev/null
@@ -1,7 +0,0 @@
-# SPDX-License-Identifier: Apache-2.0
-
-if(${ZEPHYR_TOOLCHAIN_VARIANT} STREQUAL "zephyr")
-	set(COMPILER_FULL_PATH ${ZEPHYR_SDK_INSTALL_DIR}/arm-zephyr-eabi/bin/arm-zephyr-eabi-gcc)
-elseif(${ZEPHYR_TOOLCHAIN_VARIANT} STREQUAL "gnuarmemb")
-	set(COMPILER_FULL_PATH ${GNUARMEMB_TOOLCHAIN_PATH}/bin/arm-none-eabi-gcc)
-endif()
diff --git a/boards/st/sensortile_box_pro/CMakeLists.txt b/boards/st/sensortile_box_pro/CMakeLists.txt
index 4489ff54489c..f2a184ea87fe 100644
--- a/boards/st/sensortile_box_pro/CMakeLists.txt
+++ b/boards/st/sensortile_box_pro/CMakeLists.txt
@@ -1,10 +1,3 @@
 # SPDX-License-Identifier: Apache-2.0
 
-# Define the toolchain to be used (by eg CI)
-if(${ZEPHYR_TOOLCHAIN_VARIANT} STREQUAL "zephyr")
-  set(COMPILER_FULL_PATH ${ZEPHYR_SDK_INSTALL_DIR}/arm-zephyr-eabi/bin/arm-zephyr-eabi-gcc)
-elseif(${ZEPHYR_TOOLCHAIN_VARIANT} STREQUAL "gnuarmemb")
-  set(COMPILER_FULL_PATH ${GNUARMEMB_TOOLCHAIN_PATH}/bin/arm-none-eabi-gcc)
-endif()
-
 zephyr_library_sources(board.c)
diff --git a/boards/st/stm32l562e_dk/CMakeLists.txt b/boards/st/stm32l562e_dk/CMakeLists.txt
deleted file mode 100644
index f6ca91f1a73b..000000000000
--- a/boards/st/stm32l562e_dk/CMakeLists.txt
+++ /dev/null
@@ -1,15 +0,0 @@
-# SPDX-License-Identifier: Apache-2.0
-
-# Define the toolchain to be used (by eg CI)
-if(${ZEPHYR_TOOLCHAIN_VARIANT} STREQUAL "zephyr")
-  set(COMPILER_FULL_PATH ${ZEPHYR_SDK_INSTALL_DIR}/arm-zephyr-eabi/bin/arm-zephyr-eabi-gcc)
-elseif(${ZEPHYR_TOOLCHAIN_VARIANT} STREQUAL "gnuarmemb")
-  set(COMPILER_FULL_PATH ${GNUARMEMB_TOOLCHAIN_PATH}/bin/arm-none-eabi-gcc)
-endif()
-
-if(CONFIG_BUILD_WITH_TFM)
-  set_property(GLOBAL APPEND PROPERTY extra_post_build_commands
-    #Execute post build script postbuild.sh
-    COMMAND $<TARGET_PROPERTY:tfm,TFM_BINARY_DIR>/api_ns/postbuild.sh ${COMPILER_FULL_PATH}
-  )
-endif()
diff --git a/soc/st/stm32/CMakeLists.txt b/soc/st/stm32/CMakeLists.txt
index cda6e4283748..bc51b0edb65d 100644
--- a/soc/st/stm32/CMakeLists.txt
+++ b/soc/st/stm32/CMakeLists.txt
@@ -1,5 +1,12 @@
 # Copyright (c) 2024 STMicroelectronics
 # SPDX-License-Identifier: Apache-2.0
 
+if (CONFIG_BUILD_WITH_TFM)
+	set_property(GLOBAL APPEND PROPERTY extra_post_build_commands
+		#Execute post build script postbuild.sh
+		COMMAND $<TARGET_PROPERTY:tfm,TFM_BINARY_DIR>/api_ns/postbuild.sh ${CROSS_COMPILE}${CC}
+	)
+endif()
+
 add_subdirectory(common)
 add_subdirectory(${SOC_SERIES})