Compile and link simple programs

We strongly recommend use of D0 utilities for compiling and linking. This is especially important for programs using D0 libraries, and requiring libtest/nolibtest functionality.

The resulting linked program is by default stored in a file a.out. Directive -o filename will send the resulting program to the requested file.

The following compilers are available on Silicon Graphics systems (on other systems the compiler names may vary, consult the man pages):

• f77 - Fortran 77 compiler. It expects files to be compiled to have a file extension .f (for example myprog.f).

  Its most frequently used switches are:

  • -c
    Suppress the loading phase of the compilation and force an object file to be produced even if only one program is compiled.

  • -static
    Cause all local variables to be statically allocated. Statically allocated local variables are initialized to zero and exist for the life of the program. This option is usually needed for programs ported from older systems (e.g. VMS) where all variables are statically allocated.

  Example:

     f77 -c func1.f
     f77 -o myprog.x myprog.f func1.o mylib.a
  

• cc - C compiler. It expects files to be compiled to have a file extension .c (fro example myprog.c). This compiler can be used as well to compile programs/subroutines written in Fortran.Its most frequently used switches are:
  • -c
    Suppress the loading phase of the compilation and force an object file to be produced even if only one program is compiled.

  • -Idir
    `#include' files whose names do not begin with `/' are always sought first in the directory of the file argument, then in directories specified in -I options, and finally in the standard directory (/usr/include).

  Example:

  cc -c func1.c cc -o myprog.x myprog.cc fync1.o mylib.a

• CC - CC compiler.

  CC (capital CC) translates C++ source code to C source code. Its normal operation is then to invoke the C compiler cc(1) to generate an object file.

  CC takes arguments ending in .c, .C, .c++, or .cxx to be C++ source programs.

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