Makefile: fix warnings when compiling with clang++
authorAntonio Ospite <ao2@ao2.it>
Thu, 22 Oct 2015 09:06:31 +0000 (11:06 +0200)
committerAntonio Ospite <ao2@ao2.it>
Thu, 22 Oct 2015 09:06:31 +0000 (11:06 +0200)
Clang does not support some options and gives warnings:

  warning: unknown warning option '-Wunsafe-loop-optimizations';
  warning: unknown warning option '-Wunused-but-set-variable';

So add them only when the compiler is not clang.


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