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The change from C++0x to C++11 allows all of C++11 functionality to be used in OpenFOAM, in particular constructor delegation which avoids code duplication or constructor helper functions. However, this also means a change to the minimum gcc version supported which is now 4.7 rather than 4.5. Note that gcc-4.7 does not support the entire C++11 standard but does support all of the functionality currently needed for further OpenFOAM development. The minimum gcc-version which supports the entire C++11 standard is 4.8 which is now the recommended minimum gcc version.
OpenFOAM Configuration
The main OpenFOAM settings are located in the parent etc/ directory. The bash and csh shells are supported and to configure OpenFOAM source etc/bashrc or etc/cshrc respectively which source the following files in the config.sh or config.csh respectively:
settings: core settingsaliases: aliases for interactive shellsunset: sourced to clear as many OpenFOAM environment settings as possiblempi: MPI communications library settingsensight: application settings for EnSightparaview: application settings for ParaViewscotch: application settings for compiling against scotchmetis: application settings for compiling against metis 5
The config.*/example directories contains various example configuration files for the corresponding shell:
compiler: an example of fine tuning ThirdParty compiler settingsopenmpi: an example of fine tuning openmpi settings for OpenFOAMparaview: an example of chaining to the standard config/paraview with a different ParaView_VERSIONprefs: an example of supplying alternative site-defined settings