In bug 1260996, we straightened things up for the host flags on cross compile builds, where the situation was that they were effectively empty by default, and that hasn't changed. While working on bug 1260996, it has become clear that there is no much point in setting the host flags from the target flags on non cross compile builds, especially when the target flags come from the environment. That creates a discrepancy with cross compilation builds for no real reason, and there are effectively too few host things to build that it would matter anyways. The flags that do matter are the ones for C++11, C99, and optimisations, and they all are set independently of what is being removed here. Review commit: https://reviewboard.mozilla.org/r/43803/diff/#index_header See other reviews: https://reviewboard.mozilla.org/r/43803/

Comment on attachment 8737204 [details] MozReview Request: Bug 1261359 - Don't set HOST_{C,CXX,LD}FLAGS from {C,CXX,LD}FLAGS at all. r?nalexander https://reviewboard.mozilla.org/r/43803/#review40387