Set CMAKE_CXX_FLAGS only when not set

mfontanini / cppkafka

Modern C++ Apache Kafka client library (wrapper for librdkafka)

BSD 2-Clause "Simplified" License

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Set CMAKE_CXX_FLAGS only when not set #174

Closed accelerated closed 5 years ago

accelerated commented 5 years ago

Allow user overrides (such as CXXFLAGS environtment variable in linux) to completely determine the value of CMAKE_CXX_FLAGS. Currently it's impossible to build with -std-c++14 for example.

mfontanini commented 5 years ago

Thanks!