Compiler/TI: Add std options for C++98

The TI compiler does not support C++98, only C++03
(based on manual of current version).

This change sets the C++98 option to C++03 based on the fact that it
is done this way for the SunPro compiler already.

Help/manual/cmake-compile-features.7.rst

@@ -358,6 +358,7 @@ versions specified for each:
 
 * ``Cray``: Cray Compiler Environment version 8.1+.
 * ``PGI``: PGI version 12.10+.
+* ``TI``: Texas Instruments compiler.
 * ``XL``: IBM XL version 10.1+.
 
 CMake is currently aware of the :prop_tgt:`C standards <C_STANDARD>` and
@@ -366,7 +367,6 @@ following :variable:`compiler ids <CMAKE_<LANG>_COMPILER_ID>` as of the
 versions specified for each:
 
 * all compilers and versions listed above with only meta-features for C++.
-* ``TI``: Texas Instruments compiler.
 
 CMake is currently aware of the :prop_tgt:`CUDA standards <CUDA_STANDARD>` and
 their associated meta-features (e.g. ``cuda_std_11``) available from the

Modules/Compiler/TI-CXX.cmake

@@ -1,2 +1,53 @@
 include(Compiler/TI)
 __compiler_ti(CXX)
+
+# Architecture specific
+
+if("${CMAKE_CXX_COMPILER_ARCHITECTURE_ID}" STREQUAL "ARM")
+  set(__COMPILER_TI_CXX03_VERSION 5.2)
+
+elseif("${CMAKE_CXX_COMPILER_ARCHITECTURE_ID}" STREQUAL "MSP430")
+  set(__COMPILER_TI_CXX03_VERSION 4.4)
+
+elseif("${CMAKE_CXX_COMPILER_ARCHITECTURE_ID}" STREQUAL "TMS320C28x")
+  set(__COMPILER_TI_CXX03_VERSION 16.9)
+
+elseif("${CMAKE_CXX_COMPILER_ARCHITECTURE_ID}" STREQUAL "TMS320C6x")
+  set(__COMPILER_TI_CXX03_VERSION 8.1)
+
+else()
+  # architecture not handled
+  return()
+
+endif()
+
+
+if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "${__COMPILER_TI_CXX03_VERSION}")
+
+  set(CMAKE_CXX98_STANDARD_COMPILE_OPTION "--c++03" "--strict_ansi")
+  set(CMAKE_CXX98_EXTENSION_COMPILE_OPTION "--c++03" "--relaxed_ansi")
+
+else()
+
+  set(CMAKE_CXX98_STANDARD_COMPILE_OPTION  "--strict_ansi")
+  set(CMAKE_CXX98_EXTENSION_COMPILE_OPTION "--relaxed_ansi")
+
+endif()
+
+
+# Architecture specific
+# CXX98 versions: https://processors.wiki.ti.com/index.php/C%2B%2B_Support_in_TI_Compilers
+
+if("${CMAKE_CXX_COMPILER_ARCHITECTURE_ID}" STREQUAL "ARM")
+  __compiler_check_default_language_standard(CXX 4.5 98)
+
+elseif("${CMAKE_CXX_COMPILER_ARCHITECTURE_ID}" STREQUAL "MSP430")
+  __compiler_check_default_language_standard(CXX 3.0 98)
+
+elseif("${CMAKE_CXX_COMPILER_ARCHITECTURE_ID}" STREQUAL "TMS320C28x")
+  __compiler_check_default_language_standard(CXX 5.1 98)
+
+elseif("${CMAKE_CXX_COMPILER_ARCHITECTURE_ID}" STREQUAL "TMS320C6x")
+  __compiler_check_default_language_standard(CXX 6.1 98)
+
+endif()