update cmake build

examples/build_system/cmake/toolchain/arm_gcc.cmake

@@ -1,5 +1,3 @@
-set(CMAKE_SYSTEM_NAME Generic)
-
 if (NOT DEFINED CMAKE_C_COMPILER)
   set(CMAKE_C_COMPILER "arm-none-eabi-gcc")
 endif ()
@@ -9,44 +7,15 @@ if (NOT DEFINED CMAKE_CXX_COMPILER)
 endif ()
 
 set(CMAKE_ASM_COMPILER ${CMAKE_C_COMPILER})
-
 set(CMAKE_SIZE "arm-none-eabi-size" CACHE FILEPATH "")
 set(CMAKE_OBJCOPY "arm-none-eabi-objcopy" CACHE FILEPATH "")
 set(CMAKE_OBJDUMP "arm-none-eabi-objdump" CACHE FILEPATH "")
 
-set_property(GLOBAL PROPERTY TARGET_SUPPORTS_SHARED_LIBS FALSE)
+include(${CMAKE_CURRENT_LIST_DIR}/common.cmake)
 
-# 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
-  -fdata-sections
-  -ffunction-sections
-  -fsingle-precision-constant
-  -fno-strict-aliasing
-  )
-
-list(APPEND TOOLCHAIN_EXE_LINKER_FLAGS
-  -Wl,--print-memory-usage
-  -Wl,--gc-sections
-  -Wl,--cref
-  )
-
-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")
+  cmake_print_variables(CMAKE_C_LINK_FLAGS)
 endif ()

examples/build_system/cmake/toolchain/arm_iar.cmake

@@ -1,5 +1,3 @@
-set(CMAKE_SYSTEM_NAME Generic)
-
 if (NOT DEFINED CMAKE_C_COMPILER)
   set(CMAKE_C_COMPILER "iccarm")
 endif()
@@ -16,25 +14,4 @@ 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)
+include(${CMAKE_CURRENT_LIST_DIR}/common.cmake)
-
-# Look for includes and libraries only in the target system prefix.
-set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
-
-# pass TOOLCHAIN_CPU to
-set(CMAKE_TRY_COMPILE_PLATFORM_VARIABLES CMAKE_SYSTEM_PROCESSOR)
-
-include(${CMAKE_CURRENT_LIST_DIR}/../cpu/${CMAKE_SYSTEM_PROCESSOR}.cmake)
-
-# enable all possible warnings for building examples
-list(APPEND TOOLCHAIN_COMMON_FLAGS
-  )
-
-list(APPEND TOOLCHAIN_EXE_LINKER_FLAGS
-  --diag_suppress=Li065
-  )
-
-include(${CMAKE_CURRENT_LIST_DIR}/set_flags.cmake)

examples/build_system/cmake/toolchain/common.cmake

@@ -0,0 +1,53 @@
+include(CMakePrintHelpers)
+
+# ----------------------------------------------------------------------------
+# Common
+# ----------------------------------------------------------------------------
+set(CMAKE_SYSTEM_NAME Generic)
+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)
+
+# ----------------------------------------------------------------------------
+# Compile flags
+# ----------------------------------------------------------------------------
+if (TOOLCHAIN STREQUAL "gcc")
+  list(APPEND TOOLCHAIN_COMMON_FLAGS
+    -fdata-sections
+    -ffunction-sections
+    -fsingle-precision-constant
+    -fno-strict-aliasing
+    )
+  list(APPEND TOOLCHAIN_EXE_LINKER_FLAGS
+    -Wl,--print-memory-usage
+    -Wl,--gc-sections
+    -Wl,--cref
+    )
+elseif (TOOLCHAIN STREQUAL "iar")
+  #list(APPEND TOOLCHAIN_COMMON_FLAGS)
+  list(APPEND TOOLCHAIN_EXE_LINKER_FLAGS
+    --diag_suppress=Li065
+    )
+elseif (TOOLCHAIN STREQUAL "clang")
+  message(FATAL_ERROR "Clang not supported")
+endif ()
+
+# join the toolchain flags into a single string
+list(JOIN TOOLCHAIN_COMMON_FLAGS " " TOOLCHAIN_COMMON_FLAGS)
+foreach (LANG IN ITEMS C CXX ASM)
+  set(CMAKE_${LANG}_FLAGS_INIT ${TOOLCHAIN_COMMON_FLAGS})
+  # optimization flags for LOG, LOGGER ?
+  #set(CMAKE_${LANG}_FLAGS_RELEASE_INIT "-Os")
+  #set(CMAKE_${LANG}_FLAGS_DEBUG_INIT "-O0")
+endforeach ()
+
+# Linker
+list(JOIN TOOLCHAIN_EXE_LINKER_FLAGS " " CMAKE_EXE_LINKER_FLAGS_INIT)

examples/build_system/cmake/toolchain/msp430_gcc.cmake

@@ -1,5 +1,3 @@
-set(CMAKE_SYSTEM_NAME Generic)
-
 if (NOT DEFINED CMAKE_C_COMPILER)
   set(CMAKE_C_COMPILER "msp430-elf-gcc")
 endif ()
@@ -14,39 +12,4 @@ set(CMAKE_SIZE "msp430-elf-size" CACHE FILEPATH "")
 set(CMAKE_OBJCOPY "msp430-elf-objcopy" CACHE FILEPATH "")
 set(CMAKE_OBJDUMP "msp430-elf-objdump" CACHE FILEPATH "")
 
-set_property(GLOBAL PROPERTY TARGET_SUPPORTS_SHARED_LIBS FALSE)
+include(${CMAKE_CURRENT_LIST_DIR}/common.cmake)
-
-# Look for includes and libraries only in the target system prefix.
-set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
-
-# pass TOOLCHAIN_CPU to
-set(CMAKE_TRY_COMPILE_PLATFORM_VARIABLES CMAKE_SYSTEM_PROCESSOR)
-
-include(${CMAKE_CURRENT_LIST_DIR}/../cpu/${CMAKE_SYSTEM_PROCESSOR}.cmake)
-
-# enable all possible warnings for building examples
-list(APPEND TOOLCHAIN_COMMON_FLAGS
-  -fdata-sections
-  -ffunction-sections
-  -fsingle-precision-constant
-  -fno-strict-aliasing
-  )
-
-list(APPEND TOOLCHAIN_EXE_LINKER_FLAGS
-  -Wl,--print-memory-usage
-  -Wl,--gc-sections
-  -Wl,--cref
-  )
-
-include(${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 ()

examples/build_system/cmake/toolchain/set_flags.cmake

@@ -1,17 +0,0 @@
-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)
-  set(CMAKE_${LANG}_FLAGS_INIT ${TOOLCHAIN_COMMON_FLAGS})
-
-  #cmake_print_variables(CMAKE_${LANG}_FLAGS_INIT)
-
-  # optimization flags for LOG, LOGGER ?
-  #set(CMAKE_${LANG}_FLAGS_RELEASE_INIT "-Os")
-  #set(CMAKE_${LANG}_FLAGS_DEBUG_INIT "-O0")
-endforeach ()
-
-# Linker
-list(JOIN TOOLCHAIN_EXE_LINKER_FLAGS " " CMAKE_EXE_LINKER_FLAGS_INIT)