3.2 General Guidelines

Some general guidelines for the C++ compiler options are:

• The– llib option links with library liblib.a (or liblib.so). It is always safer to put– llib after the source and object files to ensure the order in which libraries are searched.

• In general, processing of the compiler options is from left to right (with the exception that– U options are processed after all– D options), allowing selective overriding of macro options (options that include other options). This rule does not apply to linker options.

• The -features,–I -l, –L, -library, –pti, –R, -staticlib, -U, -verbose, and -xprefetch options accumulate, they do not override.

• The -D option accumulates, However, multiple -D options for the same name override each other.

Source files, object files, and libraries are compiled and linked in the order in which they appear on the command line.