Fix GSL for C++ standalone mode #1687
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The GSL implementation did not catch up with recent changes in C++ standalone mode, leading it to raise
NotImplementedError
. Unfortunately, the GSL test suite skips tests that raiseNotImplementedError
, since this is supposed to be a signal for use of thenumpy
backend, which doesn't have GSL support (this is probably not a good approach…). The failure therefore went unnoticed. A few small additional fixes were necessary, probably related to changes in our compiler flags.