The source project of this merge request has been removed.
IAR: update language specification detection
The IAR support in CMake currently uses the value of the predefined symbol IAR_SYSTEMS_ICC to determine which C and C++ language version the compiler supports. This is not future proof as this symbol denotes the internal platform generation which will not necessarily always be connected to the supported language version.
Therefore, this change involves that the IAR compiler internal symbols __cplusplus and __STDC_VERSION__ are used to determine the C++ and C language specifications, respectively.
Edited by Felipe Torrezan