I could not find any documentation regarding targeted (supported) compilers/architectures/languages/etc. Did I miss something?

If not, my needs/proposal would be:

• Compilers:
  • Latest version of GCC
  • Latest version of Clang
• Architectures:
  • x86_64 on Linux
  • MIPSel 32 bit on Linux
  • ARMv5/armel 32 bit on Linux
• Language versions:
  • C99/C11: Fully supported
  • C90: Only for what might become a 1.x maintenance branch (❓ Future of 1.0 version ❓ #487). No longer supported in master, relieving the project from its restrictions.
  • C++: While Wakaama contains no C++ code, it must be usable from a C++ project.