Feature/sanitizer option

[VincentRouvreau]

A new cmake gudhi option to activate gcc/clang sanitizers. Default value is WITH_GUDHI_SANITIZER=''. In a command line one can easily activate sanitizer with i.e.: cmake -DWITH_GUDHI_SANITIZER=address . This will activate debug mode (-g) and add the compilation flag -fsanitize=addess. With MSVC, a warning message to explain the feature is not available is displayed. It does not activate sanitizer for the python module. To be discussed.

Some material about gcc and clang.

[mglisse]

With MSVC, a warning message to explain the feature is not available is displayed.

https://docs.microsoft.com/en-us/cpp/sanitizers/asan ?

[VincentRouvreau]

With MSVC, a warning message to explain the feature is not available is displayed.

https://docs.microsoft.com/en-us/cpp/sanitizers/asan ?

Sorry, I didn't know it was available under MSVC. I made the change on 6b373b8 and tested it under Windows.

[VincentRouvreau]

cmake -DCMAKE_CXX_FLAGS=-fsanitize=address .

Not that much, you are right. Maybe a better way would be to add a how_to_compile_gudhi_with_sanitizers.md (or a better name) in order to explain to contributors how to deal with it.