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- # ===========================================================================
- # https://www.gnu.org/software/autoconf-archive/ax_cf_ebcdic.html
- # ===========================================================================
- #
- # SYNOPSIS
- #
- # AX_CF_EBCDIC
- #
- # DESCRIPTION
- #
- # If the target character set is EBCDIC, defines variables cf_cv_ebcdic,
- # EBCDIC, and NOT_ASCII.
- #
- # I originally wrote this and submitted it to the Lynx distribution.
- # Editorial revisions by Tom Dickey, et. al.
- #
- # LICENSE
- #
- # Copyright (c) 2008 Paul Gilmartin <pg@sweng.stortek.com>
- #
- # This program is free software: you can redistribute it and/or modify it
- # under the terms of the GNU General Public License as published by the
- # Free Software Foundation, either version 3 of the License, or (at your
- # option) any later version.
- #
- # This program is distributed in the hope that it will be useful, but
- # WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
- # Public License for more details.
- #
- # You should have received a copy of the GNU General Public License along
- # with this program. If not, see <https://www.gnu.org/licenses/>.
- #
- # As a special exception, the respective Autoconf Macro's copyright owner
- # gives unlimited permission to copy, distribute and modify the configure
- # scripts that are the output of Autoconf when processing the Macro. You
- # need not follow the terms of the GNU General Public License when using
- # or distributing such scripts, even though portions of the text of the
- # Macro appear in them. The GNU General Public License (GPL) does govern
- # all other use of the material that constitutes the Autoconf Macro.
- #
- # This special exception to the GPL applies to versions of the Autoconf
- # Macro released by the Autoconf Archive. When you make and distribute a
- # modified version of the Autoconf Macro, you may extend this special
- # exception to the GPL to apply to your modified version as well.
-
- #serial 6
-
- dnl Check whether character set is EBCDIC.
- AU_ALIAS([CF_EBCDIC], [AX_CF_EBCDIC])
- AC_DEFUN([AX_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
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