Set CMAKE_CXX_STANDARD instead of CMAKE_CXX_FLAGS #1330
Merged
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As in #1329 and https://travis-ci.org/QuantStack/xtensor/jobs/477792952#L843.
make
run command/usr/bin/g++-7 -DXTENSOR_USE_XSIMD -I/home/travis/build/QuantStack/xtensor/include -isystem /home/travis/miniconda/include -march=native -Wunused-parameter -Wextra -Wreorder -Wconversion -Wsign-conversion -Wold-style-cast -Wunused-variable -std=c++17 -O3 -DNDEBUG -std=gnu++14 -o CMakeFiles/test_xtensor_lib.dir/main.cpp.o -c /home/travis/build/QuantStack/xtensor/test/main.cpp
There are both
-std=c++17
and-std=gnu++14
. The latter override the former.