[frobtads/f24] (5 commits) ...Fix the build flags

[František Dvořák]

Summary of changes:

  27e6aaa... Initial import (#3429). (*)
  1bd8433... Add build flags needed for ix86 platforms (*)
  bf9b24b... Use the build flags for all platforms (will fix arm platfor (*)
  329d16b... Use the build flags only for ix86 and arm (will fix x86_64) (*)
  2c9466f... Fix the build flags (*)

(*) This commit already existed in another branch; no separate mail sent