Sun Studio 12: Fortran User's Guide

2.2.6 Consistent Compiling and Linking

Ensuring a consistent choice of compiling and linking options is critical whenever compilation and linking are done in separate steps. Compiling any part of a program with some options requires linking with the same options. Also, a number of options require that all source files be compiled with that option, including the link step.

The option descriptions in Chapter 3 identify such options.

Example: Compiling sbr.f with -fast, compiling a C routine, and then linking in a separate step:

demo% f95 -c -fast sbr.f
demo% cc -c -fast simm.c
demo% f95 -fast sbr.o simm.o        link step; passes  -fast  to the linker