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Usage:  (make-header-guard name)
This function will create a #ifndef/#define
sequence for protecting a header from multiple evaluation.
It will also set the Scheme variable header-file
to the name of the file being protected and it will set
header-guard to the name of the #define being
used to protect it.  It is expected that this will be used
as follows:
| [+ (make-header-guard "group_name") +] ... #endif /* [+ (. header-guard) +] #include "[+ (. header-file) +]" | 
The #define name is composed as follows:
_GUARD".
The final #define name is stored in an SCM symbol named
header-guard.  Consequently, the concluding #endif for the
file should read something like:
| #endif /* [+ (. header-guard) +] */ | 
The name of the header file (the current output file) is also stored
in an SCM symbol, header-file.  Therefore, if you are also
generating a C file that uses the previously generated header file,
you can put this into that generated file:
| #include "[+ (. header-file) +]" | 
Obviously, if you are going to produce more than one header file from a particular template, you will need to be careful how these SCM symbols get handled.
Arguments:
name - header group name
 
  This document was generated by Bruce Korb on January, 27 2007 using texi2html 1.76.