IAR: Update compiler modules to support AVR systems

Fixes: #18557

4 files changed, 75 insertions, 2 deletions

diff --git a/Modules/Compiler/IAR-C.cmake b/Modules/Compiler/IAR-C.cmake
index 2ed8818..b5e61f0 100644
--- a/Modules/Compiler/IAR-C.cmake
+++ b/Modules/Compiler/IAR-C.cmake
@@ -29,7 +29,19 @@ if("${CMAKE_C_COMPILER_ARCHITECTURE_ID}" STREQUAL "ARM")
   __compiler_check_default_language_standard(C 1.10 90 6.10 99 8.10 11)
 
 elseif("${CMAKE_C_COMPILER_ARCHITECTURE_ID}" STREQUAL "AVR")
+  if(NOT CMAKE_C_COMPILER_VERSION)
+    message(FATAL_ERROR "CMAKE_C_COMPILER_VERSION not detected.  This should be automatic.")
+  endif()
+
+  set(CMAKE_C_EXTENSION_COMPILE_OPTION -e)
+
+  set(CMAKE_C90_STANDARD_COMPILE_OPTION --c89)
+  set(CMAKE_C90_EXTENSION_COMPILE_OPTION -e)
+  set(CMAKE_C99_STANDARD_COMPILE_OPTION "")
+  set(CMAKE_C99_EXTENSION_COMPILE_OPTION -e)
+
   __compiler_iar_AVR(C)
+  __compiler_check_default_language_standard(C 7.10 99)
   set(CMAKE_C_OUTPUT_EXTENSION ".r90")
 
   if(NOT CMAKE_C_LINK_FLAGS)
@@ -43,6 +55,7 @@ elseif("${CMAKE_C_COMPILER_ARCHITECTURE_ID}" STREQUAL "AVR")
   get_filename_component(_compilerDir "${CMAKE_C_COMPILER}" PATH)
   get_filename_component(_compilerDir "${_compilerDir}" PATH)
   include_directories("${_compilerDir}/inc" )
+  include_directories("${_compilerDir}/inc/Atmel" )
 
 else()
   message(FATAL_ERROR "CMAKE_C_COMPILER_ARCHITECTURE_ID not detected as \"AVR\" or \"ARM\".  This should be automatic.")
diff --git a/Modules/Compiler/IAR-CXX.cmake b/Modules/Compiler/IAR-CXX.cmake
index 5b783b2..b7076f5 100644
--- a/Modules/Compiler/IAR-CXX.cmake
+++ b/Modules/Compiler/IAR-CXX.cmake
@@ -38,7 +38,27 @@ if("${CMAKE_CXX_COMPILER_ARCHITECTURE_ID}" STREQUAL "ARM")
   __compiler_check_default_language_standard(CXX 6.10 98 8.10 14)
 
 elseif("${CMAKE_CXX_COMPILER_ARCHITECTURE_ID}" STREQUAL "AVR")
+  # "embedded C++" --EC++ is probably closest to CXX98 but with no support for:
+  #  Templates, multiple inheritance, virtual inheritance, exceptions, RTTI, C++ style casts,
+  #  Namespaces, the mutable attribute, no STL, any library features related to the above features.
+  #
+  # "(extended) embedded C++" --EEC++ Mode but DOES NOT support any normal C++ standard
+  # probably closest to CXX98 but with no RTTI and no exceptions, and the library
+  # provided is not in the standard namespace
+  if(NOT CMAKE_IAR_CXX_FLAG)
+    if(NOT CMAKE_CXX_COMPILER_VERSION)
+      message(FATAL_ERROR "CMAKE_CXX_COMPILER_VERSION not detected.  This should be automatic.")
+    endif()
+    set(CMAKE_IAR_CXX_FLAG --eec++)
+  endif()
+
+  set(CMAKE_CXX_EXTENSION_COMPILE_OPTION -e)
+  set(CMAKE_CXX98_STANDARD_COMPILE_OPTION "")
+  set(CMAKE_CXX98_EXTENSION_COMPILE_OPTION -e)
+
   __compiler_iar_AVR(CXX)
+  __compiler_check_default_language_standard(CXX 7.10 98)
+
   set(CMAKE_CXX_OUTPUT_EXTENSION ".r90")
   if(NOT CMAKE_CXX_LINK_FLAGS)
     set(CMAKE_CXX_LINK_FLAGS "-Fmotorola")
@@ -51,6 +71,7 @@ elseif("${CMAKE_CXX_COMPILER_ARCHITECTURE_ID}" STREQUAL "AVR")
   get_filename_component(_compilerDir "${CMAKE_C_COMPILER}" PATH)
   get_filename_component(_compilerDir "${_compilerDir}" PATH)
   include_directories("${_compilerDir}/inc")
+  include_directories("${_compilerDir}/inc/Atmel")
 
 else()
   message(FATAL_ERROR "CMAKE_CXX_COMPILER_ARCHITECTURE_ID not detected as \"AVR\" or \"ARM\".  This should be automatic." )
diff --git a/Modules/Compiler/IAR-DetermineCompiler.cmake b/Modules/Compiler/IAR-DetermineCompiler.cmake
index a1bffeb..43477ac 100644
--- a/Modules/Compiler/IAR-DetermineCompiler.cmake
+++ b/Modules/Compiler/IAR-DetermineCompiler.cmake
@@ -1,4 +1,4 @@
-# IAR Systems compiler for embedded systems.
+# IAR Systems compiler for ARM embedded systems.
 #   http://www.iar.com
 #   http://supp.iar.com/FilesPublic/UPDINFO/004916/arm/doc/EWARM_DevelopmentGuide.ENU.pdf
 #
@@ -9,13 +9,31 @@
 # __ICCARM__          An integer that is set to 1 when the code is compiled with the IAR C/C++ Compiler for ARM
 # __VER__             An integer that identifies the version number of the IAR compiler in use. For example,
 #                     version 5.11.3 is returned as 5011003.
+#
+# IAR Systems Compiler for AVR embedded systems
+#  http://supp.iar.com/FilesPublic/UPDINFO/007051/ew/doc/EWAVR_CompilerReference.pdf
+#
+# __IAR_SYSTEMS_ICC__ An integer that identifies the IAR compiler platform.
+# __ICCAVR__          An integer that is set to 1 when the code is compiled with the IAR C/C++ Compiler for AVR
+# __VER__             An integer that identifies the version number of the IAR compiler in use.
+#                     The value is calculated by (100 * VERSION_MAJOR + VERSION_MINOR). For example the version
+#                     3.34 is given as 334
+# __SUBVERSION__      An integer that identifies the subversion number of the compiler version number
+#                     for example 3 in 1.2.3.4.  THis is used as the patch version, as seen when running iccavr
+#                     from the command line
+#
 
 set(_compiler_id_pp_test "defined(__IAR_SYSTEMS_ICC__) || defined(__IAR_SYSTEMS_ICC)")
 
 set(_compiler_id_version_compute "
-# if defined(__VER__)
+# if defined(__VER__) && defined(__ICCARM__)
 #  define @PREFIX@COMPILER_VERSION_MAJOR @MACRO_DEC@((__VER__) / 1000000)
 #  define @PREFIX@COMPILER_VERSION_MINOR @MACRO_DEC@(((__VER__) / 1000) % 1000)
 #  define @PREFIX@COMPILER_VERSION_PATCH @MACRO_DEC@((__VER__) % 1000)
 #  define @PREFIX@COMPILER_VERSION_INTERNAL @MACRO_DEC@(__IAR_SYSTEMS_ICC__)
+# elif defined(__VER__) && defined(__ICCAVR__)
+#  define @PREFIX@COMPILER_VERSION_MAJOR @MACRO_DEC@((__VER__) / 100)
+#  define @PREFIX@COMPILER_VERSION_MINOR @MACRO_DEC@((__VER__) - (((__VER__) / 100)*100))
+#  define @PREFIX@COMPILER_VERSION_PATCH @MACRO_DEC@(__SUBVERSION__)
+#  define @PREFIX@COMPILER_VERSION_INTERNAL @MACRO_DEC@(__IAR_SYSTEMS_ICC__)
 # endif")
diff --git a/Modules/Compiler/IAR.cmake b/Modules/Compiler/IAR.cmake
index 43243b9..bbcdea2 100644
--- a/Modules/Compiler/IAR.cmake
+++ b/Modules/Compiler/IAR.cmake
@@ -68,6 +68,27 @@ endmacro()
 
 macro(__compiler_iar_AVR lang)
   set(CMAKE_EXECUTABLE_SUFFIX ".bin")
+  if (${lang} STREQUAL "C" OR ${lang} STREQUAL "CXX")
+
+    set(CMAKE_${lang}_COMPILE_OBJECT             "<CMAKE_${lang}_COMPILER> ${CMAKE_IAR_${lang}_FLAG} --silent <SOURCE> <DEFINES> <INCLUDES> <FLAGS> -o <OBJECT>")
+    set(CMAKE_${lang}_CREATE_PREPROCESSED_SOURCE "<CMAKE_${lang}_COMPILER> ${CMAKE_IAR_${lang}_FLAG} --silent <SOURCE> <DEFINES> <INCLUDES> <FLAGS> --preprocess=cnl <PREPROCESSED_SOURCE>")
+    set(CMAKE_${lang}_CREATE_ASSEMBLY_SOURCE     "<CMAKE_${lang}_COMPILER> ${CMAKE_IAR_${lang}_FLAG} --silent <SOURCE> <DEFINES> <INCLUDES> <FLAGS> -lAH <ASSEMBLY_SOURCE> -o <OBJECT>.dummy")
+
+    set(CMAKE_${lang}_RESPONSE_FILE_LINK_FLAG "-f ")
+    set(CMAKE_DEPFILE_FLAGS_${lang} "--dependencies=ns <DEPFILE>")
+
+    string(APPEND CMAKE_${lang}_FLAGS_INIT " ")
+    string(APPEND CMAKE_${lang}_FLAGS_DEBUG_INIT " -r")
+    string(APPEND CMAKE_${lang}_FLAGS_MINSIZEREL_INIT " -Ohz -DNDEBUG")
+    string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -Oh -DNDEBUG")
+    string(APPEND CMAKE_${lang}_FLAGS_RELWITHDEBINFO_INIT " -Oh -r -DNDEBUG")
+  endif()
+
+  set(CMAKE_${lang}_LINK_EXECUTABLE "\"${CMAKE_IAR_LINKER}\" -S <OBJECTS> <CMAKE_${lang}_LINK_FLAGS> <LINK_FLAGS> <LINK_LIBRARIES> -o <TARGET>")
+  set(CMAKE_${lang}_CREATE_STATIC_LIBRARY "\"${CMAKE_IAR_AR}\" <TARGET> <LINK_FLAGS> <OBJECTS>")
+  set(CMAKE_${lang}_ARCHIVE_CREATE "\"${CMAKE_IAR_AR}\" <TARGET> <LINK_FLAGS> <OBJECTS>")
+  set(CMAKE_${lang}_ARCHIVE_APPEND "")
+  set(CMAKE_${lang}_ARCHIVE_FINISH "")
 
   set(CMAKE_LIBRARY_PATH_FLAG "-I")