diff --git a/cmake/compiler/gcc/target.cmake b/cmake/compiler/gcc/target.cmake
index 2e90f00f659..65e37d4bc5e 100644
--- a/cmake/compiler/gcc/target.cmake
+++ b/cmake/compiler/gcc/target.cmake
@@ -78,6 +78,8 @@ elseif("${ARCH}" STREQUAL "mips")
   include(${CMAKE_CURRENT_LIST_DIR}/target_mips.cmake)
 elseif("${ARCH}" STREQUAL "xtensa")
   include(${CMAKE_CURRENT_LIST_DIR}/target_xtensa.cmake)
+elseif("${ARCH}" STREQUAL "rx")
+  include(${CMAKE_CURRENT_LIST_DIR}/target_rx.cmake)
 endif()
 
 if(SYSROOT_DIR)
diff --git a/cmake/compiler/gcc/target_rx.cmake b/cmake/compiler/gcc/target_rx.cmake
new file mode 100644
index 00000000000..6911b0cda72
--- /dev/null
+++ b/cmake/compiler/gcc/target_rx.cmake
@@ -0,0 +1,36 @@
+# SPDX-License-Identifier: Apache-2.0
+
+list(APPEND TOOLCHAIN_C_FLAGS)
+list(APPEND TOOLCHAIN_C_FLAGS  -mlittle-endian-data -ffunction-sections -fdata-sections)
+
+list(APPEND TOOLCHAIN_LD_FLAGS)
+list(APPEND TOOLCHAIN_LD_FLAGS -mlittle-endian-data)
+
+if(NOT CONFIG_PICOLIBC)
+  list(APPEND TOOLCHAIN_LD_FLAGS -lm)
+endif()
+
+if(NOT CONFIG_FPU)
+  list(APPEND TOOLCHAIN_C_FLAGS -nofpu)
+endif()
+
+if("cross-compile" STREQUAL ${ZEPHYR_TOOLCHAIN_VARIANT})
+  if(CONFIG_CPU_RXV1)
+    list(APPEND TOOLCHAIN_C_FLAGS -misa=v1)
+    list(APPEND TOOLCHAIN_LD_FLAGS -misa=v1)
+  elseif(CONFIG_CPU_RXV2)
+    list(APPEND TOOLCHAIN_C_FLAGS -misa=v2)
+    list(APPEND TOOLCHAIN_LD_FLAGS -misa=v2)
+  else()
+    list(APPEND TOOLCHAIN_C_FLAGS -misa=v3)
+    list(APPEND TOOLCHAIN_LD_FLAGS -misa=v3)
+  endif()
+elseif("zephyr" STREQUAL ${ZEPHYR_TOOLCHAIN_VARIANT})
+  if(CONFIG_SOC_SERIES_RX130)
+    list(APPEND TOOLCHAIN_C_FLAGS -mcpu=rx100)
+    list(APPEND TOOLCHAIN_LD_FLAGS -mcpu=rx100)
+  elseif(CONFIG_SOC_SERIES_RX62N)
+    list(APPEND TOOLCHAIN_C_FLAGS -mcpu=rx600)
+    list(APPEND TOOLCHAIN_LD_FLAGS -mcpu=rx600)
+  endif()
+endif()