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Autoconf Macro: cf_ebcdic
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<h1>
cf_ebcdic
</h1>
<h2>
Synopsis
</h2>
<p class="indent" style="white-space:nowrap;">
<code>CF_EBCDIC</code>
</p>
<h2>
Description
</h2>
<div class="indent">
<p>
If the target character set is EBCDIC, defines variables cf_cv_ebcdic,
EBCDIC, and NOT_ASCII.
</p>
<p>
I originally wrote this and submitted it to the Lynx distribution.
Editorial revisions by Tom Dickey, et. al.
</p>
</div>
<h2>
Author
</h2>
<p class="indent">
Paul Gilmartin <pg@sweng.stortek.com>
</p>
<h2>
Last Modified
</h2>
<p class="indent">
2000-07-19
</p>
<h2>
M4 Source Code
</h2>
<div class="indent">
<pre class="m4source">
dnl Check whether character set is EBCDIC.
AC_DEFUN([CF_EBCDIC],[
AC_MSG_CHECKING(if character set is EBCDIC)
AC_CACHE_VAL(cf_cv_ebcdic,[
AC_TRY_COMPILE([ ],
[ /* TryCompile function for CharSet.
Treat any failure as ASCII for compatibility with existing art.
Use compile-time rather than run-time tests for cross-compiler
tolerance. */
#if '0'!=240
make an error "Character set is not EBCDIC"
#endif ],
[ # TryCompile action if true
cf_cv_ebcdic=yes ],
[ # TryCompile action if false
cf_cv_ebcdic=no])
# end of TryCompile ])
# end of CacheVal CvEbcdic
AC_MSG_RESULT($cf_cv_ebcdic)
case "$cf_cv_ebcdic" in #(vi
yes) AC_DEFINE(EBCDIC)
AC_DEFINE(NOT_ASCII);; #(vi
*) ;;
esac
])dnl
</pre>
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