_GLIBCXX_USE_C99_MATH_TR1 is undefined for some architectures

[stephanosio]

_GLIBCXX_USE_C99_MATH_TR1 is undefined for some architectures (e.g. in aarch64-zephyr-elf toolchain), leading to build issues with cmath such as:

/Users/cfriedt/workspace/gsoc-2022-thrift/.upstream/lib/cpp/src/thrift/transport/TBufferTransports.cpp: In member function 'void apache::thrift::transport::TMemoryBuffer::ensureCanWrite(uint32_t)':
/Users/cfriedt/workspace/gsoc-2022-thrift/.upstream/lib/cpp/src/thrift/transport/TBufferTransports.cpp:374:45: error: 'exp2' is not a member of 'std'
  374 |   const double suggested_buffer_size = std::exp2(std::ceil(std::log2(required_buffer_size)));
      |                                             ^~~~
/Users/cfriedt/workspace/gsoc-2022-thrift/.upstream/lib/cpp/src/thrift/transport/TBufferTransports.cpp:374:55: error: 'ceil' is not a member of 'std'
  374 |   const double suggested_buffer_size = std::exp2(std::ceil(std::log2(required_buffer_size)));
      |                                                       ^~~~
/Users/cfriedt/workspace/gsoc-2022-thrift/.upstream/lib/cpp/src/thrift/transport/TBufferTransports.cpp:374:65: error: 'log2' is not a member of 'std'
  374 |   const double suggested_buffer_size = std::exp2(std::ceil(std::log2(required_buffer_size)));

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