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Instructions on using CFITSIO on Windows platforms for C programmers

These instructions use a simple DOS-style command window. It is also possible
to build and use CFITSIO within a GUI programming environment such as Visual
Studio, but this is not supported here.

===============================================================================
1. Build the CFITSIO dll library

This step will create the cfitsio.def, cfitsio.dll, and cfitsio.lib files.
(If you downloaded the CFITSIO .zip file that contains the pre-built binary
.dll file, then SKIP THIS STEP).

A. With Microsoft Visual C++:

1. Open a DOS command window and execute the vcvars32.bat file that
is distributed with older versions of Visual C++, or simply open
the Visual C++ command window (e.g., when using Visual Studio 2010).

2. Unpack the CFITSIO source files (cfitxxxx.zip) into a new empty directory

3. In the DOS command window, cd to that directory and enter the
following commands:

nmake winDumpExts.mak
nmake makefile.vcc
(ignore the compiler warning messages)

B: With Borland C++:

First, follow the instructions provided by Borland to set up
the proper environment variables and configure files for the compiler.

Unpack the cfitsio.zip source file distribution into a suitable directory.

In a DOS command window, cd to that directory and then execute the
makepc.bat batch file on the command line to build the CFITSIO library,
and the testprog and cookbook sample programs.

===============================================================================
2. Test the CFITSIO library with Visual C++

Compile and link the testprog.c test program. When using Visual Studio,
the command is:

cl /MD testprog.c cfitsio.lib


This will create the testprog.exe executable program. Running this
program should print out a long series of diagnostic messages
that should end with "Status = 0; OK - no error"

===============================================================================
3. Compile and link an application program that calls CFITSIO routines
with Visual C++

Include the fitsio.h and longnam.h header files in the C source code.

Link the program with the cfitsio.lib file:

cl /MD your_program.c cfitsio.lib


NOTE: The /MD command line switch must be specified on the cl
command line to force the compiler/linker to use the
appropriete runtime library. If this switch is omitted, then
the fits_report_error function in CFITSIO will likely crash.

When building programs in the Visual Studio environment, one
can force the equivalent of the /MD switch by selecting
'Settings...' under the 'Project' menu, then click on the C/C++
tab and select the 'Code Generator' category. Then under 'User
Run-time Library' select 'Multithreaded DLL'.