add IAR support for G0 with cmake

4 files changed, 59 insertions, 18 deletions

diff --git a/tools/cmake/cpu/cortex-m0plus.cmake b/tools/cmake/cpu/cortex-m0plus.cmake
index 1e316ccfc..bc2257048 100644
--- a/tools/cmake/cpu/cortex-m0plus.cmake
+++ b/tools/cmake/cpu/cortex-m0plus.cmake
@@ -1,11 +1,17 @@
 if (TOOLCHAIN STREQUAL "gcc")
-  list(APPEND TOOLCHAIN_COMMON_FLAGS
+  set(TOOLCHAIN_COMMON_FLAGS
     -mthumb
     -mcpu=cortex-m0plus
     -mfloat-abi=soft
     )
 
   set(FREERTOS_PORT GCC_ARM_CM0 CACHE INTERNAL "")
-else ()
-  # TODO support IAR
+
+elseif (TOOLCHAIN STREQUAL "iar")
+  set(TOOLCHAIN_COMMON_FLAGS
+    --cpu cortex-m0
+    )
+
+  set(FREERTOS_PORT IAR_ARM_CM0 CACHE INTERNAL "")
+
 endif ()
diff --git a/tools/cmake/toolchain/arm_gcc.cmake b/tools/cmake/toolchain/arm_gcc.cmake
index c7f12f43a..6dd1e7002 100644
--- a/tools/cmake/toolchain/arm_gcc.cmake
+++ b/tools/cmake/toolchain/arm_gcc.cmake
@@ -1,8 +1,8 @@
 set(CMAKE_SYSTEM_NAME Generic)
 
-set(CMAKE_ASM_COMPILER "arm-none-eabi-gcc")
 set(CMAKE_C_COMPILER "arm-none-eabi-gcc")
 set(CMAKE_CXX_COMPILER "arm-none-eabi-g++")
+set(CMAKE_ASM_COMPILER "arm-none-eabi-gcc")
 
 set(CMAKE_SIZE "arm-none-eabi-size" CACHE FILEPATH "")
 set(CMAKE_OBJCOPY "arm-none-eabi-objcopy" CACHE FILEPATH "")
@@ -29,13 +29,13 @@ list(APPEND TOOLCHAIN_COMMON_FLAGS
   -fno-strict-aliasing
   )
 
-list(APPEND TOOLCHAIN_EXE_LINKER_FLAGS
+set(TOOLCHAIN_EXE_LINKER_FLAGS
   -Wl,--print-memory-usage
   -Wl,--gc-sections
   -Wl,--cref
   )
 
-list(APPEND TOOLCHAIN_WARNING_FLAGS
+set(TOOLCHAIN_WARNING_FLAGS
   -Wall
   -Wextra
   -Werror
@@ -62,3 +62,11 @@ list(APPEND TOOLCHAIN_WARNING_FLAGS
   )
 
 include(${CMAKE_CURRENT_LIST_DIR}/set_flags.cmake)
+
+# try_compile is cmake test compiling its own example,
+# pass -nostdlib to skip stdlib linking
+get_property(IS_IN_TRY_COMPILE GLOBAL PROPERTY IN_TRY_COMPILE)
+if (IS_IN_TRY_COMPILE)
+  set(CMAKE_C_LINK_FLAGS "${CMAKE_C_LINK_FLAGS} -nostdlib")
+  set(CMAKE_CXX_LINK_FLAGS "${CMAKE_CXX_LINK_FLAGS} -nostdlib")
+endif ()
diff --git a/tools/cmake/toolchain/arm_iar.cmake b/tools/cmake/toolchain/arm_iar.cmake
new file mode 100644
index 000000000..dfbe55e0d
--- /dev/null
+++ b/tools/cmake/toolchain/arm_iar.cmake
@@ -0,0 +1,34 @@
+set(CMAKE_SYSTEM_NAME Generic)
+
+set(CMAKE_C_COMPILER "iccarm")
+set(CMAKE_CXX_COMPILER "iccarm")
+set(CMAKE_ASM_COMPILER "iasmarm")
+
+set(CMAKE_SIZE "size" CACHE FILEPATH "")
+set(CMAKE_OBJCOPY "ielftool" CACHE FILEPATH "")
+set(CMAKE_OBJDUMP "iefdumparm" CACHE FILEPATH "")
+
+set_property(GLOBAL PROPERTY TARGET_SUPPORTS_SHARED_LIBS FALSE)
+
+# Look for includes and libraries only in the target system prefix.
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+
+# pass TOOLCHAIN_CPU to
+set(CMAKE_TRY_COMPILE_PLATFORM_VARIABLES CMAKE_SYSTEM_PROCESSOR)
+
+include(${CMAKE_CURRENT_LIST_DIR}/../cpu/${CMAKE_SYSTEM_PROCESSOR}.cmake)
+
+# enable all possible warnings for building examples
+list(APPEND TOOLCHAIN_COMMON_FLAGS
+  )
+
+list(APPEND TOOLCHAIN_EXE_LINKER_FLAGS
+  )
+
+list(APPEND TOOLCHAIN_WARNING_FLAGS
+  )
+
+include(${CMAKE_CURRENT_LIST_DIR}/set_flags.cmake)
diff --git a/tools/cmake/toolchain/set_flags.cmake b/tools/cmake/toolchain/set_flags.cmake
index 6f74fe673..44930ef4d 100644
--- a/tools/cmake/toolchain/set_flags.cmake
+++ b/tools/cmake/toolchain/set_flags.cmake
@@ -1,9 +1,10 @@
 include(CMakePrintHelpers)
+
+# join the toolchain flags into a single string
+list(JOIN TOOLCHAIN_COMMON_FLAGS " " TOOLCHAIN_COMMON_FLAGS)
+
 foreach (LANG IN ITEMS C CXX ASM)
-  # join the toolchain flags into a single string
-  list(APPEND TOOLCHAIN_${LANG}_FLAGS ${TOOLCHAIN_COMMON_FLAGS})
-  list(JOIN TOOLCHAIN_${LANG}_FLAGS " " TOOLCHAIN_${LANG}_FLAGS)
-  set(CMAKE_${LANG}_FLAGS_INIT "${TOOLCHAIN_${LANG}_FLAGS}")
+  set(CMAKE_${LANG}_FLAGS_INIT ${TOOLCHAIN_COMMON_FLAGS})
 
   #cmake_print_variables(CMAKE_${LANG}_FLAGS_INIT)
 
@@ -14,11 +15,3 @@ endforeach ()
 
 # Linker
 list(JOIN TOOLCHAIN_EXE_LINKER_FLAGS " " CMAKE_EXE_LINKER_FLAGS_INIT)
-
-# try_compile is cmake test compiling its own example,
-# pass -nostdlib to skip stdlib linking
-get_property(IS_IN_TRY_COMPILE GLOBAL PROPERTY IN_TRY_COMPILE)
-if (IS_IN_TRY_COMPILE)
-  set(CMAKE_C_LINK_FLAGS "${CMAKE_C_LINK_FLAGS} -nostdlib")
-  set(CMAKE_CXX_LINK_FLAGS "${CMAKE_CXX_LINK_FLAGS} -nostdlib")
-endif ()