LF Fortran Express User's Guide - Lahey Computer Systems, Inc.

Chapter 2 Developing with LF Fortran
Example
LF95 MYPROG.F90 -win
Creating a 32-bit Windows DLL
To create a 32-bit Windows DLL, use the -dll option.
Example
LF95 myprog.f90 -dll -win -ml msvc
In this example, the source file MYPROG.F90 contains procedures with DLL_EXPORT statements.
The following takes place:
1. MYPROG.F90 is compiled to create MYPROG.OBJ.
2. MYPROG.OBJ is automatically linked with the LF Fortran runtime library to create
MYPROG.DLL and MYPROG.LIB, the corresponding import library. Calling conventions
in this case are those expected by Microsoft Visual C/C++.
For more information on DLLs, see ”Dynamically linked applications” on page 54.
Creating a static library
To create a static library, specify the library name using the -out option.
Example
LF95 mysub.f90 -out mylib.lib
LF Fortran recognizes that a library is requested because of the .lib extension for the output
file. This causes LF Fortran to invoke the library manager rather than the linker. If the library
specified with -out does not exist, it is created; if it already exists, it is updated.
OpenGL Graphics Programs
OpenGL is a software interface for applications to generate interactive 2D and 3D computer
graphics independent of operating system and hardware operations. It is essentially a 2D/3D
graphics library which was originally developed by Silicon Graphics with the goal of creating
an efficient, platform-independent interface for graphical applications (Note: OpenGL is a
trademark of Silicon Graphics Inc.). It is available on many Win32 and Unix systems, and
is strong on 3D visualization and animation.
f90gl is a public domain implementation of the official Fortran 90 bindings for OpenGL, consisting
of a set of libraries and modules that define the function interfaces. The f90gl
interface was developed by William F. Mitchell of the Mathematical and Computational Sciences
Division, National Institute of Standards and Technology, Gaithersburg, in the USA.
For information on f90gl, see the f90gl web page at:
http://math.nist.gov/f90gl
26 LF Fortran Express User’s Guide