Macros Pertaining To All Build Actions

• HD_CFLAGS: Compiler flags used in every C compilation, regardless of whether the object file is included in a library or a task. Usually this should be defined to be equal to ${HD_STD_CFLAGS}, which is set by hmake to be the correct flags for the current component, architecture and compiler.
• HD_CLIBS: Flags specifying the libraries in the link line for tasks linked with C. This includes path information (-L flags) to find the libraries as well as the library names themselves (-l flags). Usually this should be defined to be equal to ${HD_STD_CLIBS}, which is set by hmake to be the standard C link information for the given software component.
• HD_CXXFLAGS: Compiler flags used in every C++ compilation, regardless of whether the object file is included in a library or a task. Usually this should be defined to be equal to ${HD_STD_CFLAGS}, which is set by hmake to be the correct flags for the current component, architecture and compiler.
• HD_CXXLIBS: Flags specifying the libraries in the link line for tasks linked with C++. This includes path information (-L flags) to find the libraries as well as the library names themselves (-l flags). Usually this should be defined to be equal to ${HD_STD_CXXLIBS}, which is set by hmake to be the standard C++ link information for the given software component.

Linking Fortran code with C or C++ usually requires some additional libraries to be included at link time. The macro ${F77LIBS4C} is defined by hmake to hold this information for the current architecture and compiler. If Fortran code is involved in a task, it may be necessary to add this macro to the definition of HD_CLIBS and/or HD_CXXLIBS. Of course, if this ends up being a component-wide requirement, it is also possible for hmake to include the contents of the F77LIBS4C macro directly in HD_STD_CLIBS and/or HD_STD_CXXLIBS.