# Local macros for help2man

# Copyright (C) 2012, 2014, 2022 Free Software Foundation, Inc.

# Copying and distribution of this file, with or without modification,
# are permitted in any medium without royalty provided the copyright
# notice and this notice are preserved.  This file is offered as-is,
# without any warranty.

# Written by Brendan O'Dea <bod@debian.org>

changequote()
define(RIGHT_BRACKET, ])
changequote([, ])

dnl LOCAL_PROG_PERL([MIN-VERSION])
AC_DEFUN(LOCAL_PROG_PERL,
[# find perl binary
AC_MSG_CHECKING([for perl])
AC_CACHE_VAL(ac_cv_prog_PERL,
[ifelse([$1],,,[echo "configure:__oline__: ...version $1 required" >&AS_MESSAGE_LOG_FD
  ])# allow user to override
  if test -n "$PERL"; then
    ac_try="$PERL"
  else
    ac_try="perl perl5"
  fi

  for ac_prog in $ac_try; do
    echo "configure:__oline__: trying $ac_prog" >&AS_MESSAGE_LOG_FD
    if ($ac_prog -e 'printf "found version %g\n",$RIGHT_BRACKET dnl
ifelse([$1],,,[;exit($RIGHT_BRACKET<$1)])') 1>&AS_MESSAGE_LOG_FD 2>&1; then
      ac_cv_prog_PERL=$ac_prog
      break
    fi
  done])dnl
PERL="$ac_cv_prog_PERL"
if test -n "$PERL"; then
  AC_MSG_RESULT($PERL)
else
  AC_MSG_RESULT(no)
fi
AC_SUBST(PERL)dnl
])dnl

dnl Check for perl module
dnl LOCAL_PERL_MODULE(MODULE, [MIN-VERSION])
AC_DEFUN(LOCAL_PERL_MODULE,
[# check module exists
AC_MSG_CHECKING([for module $1])
define([AC_CV_NAME], translit([ac_cv_module_$1], [:], [_]))dnl
AC_CACHE_VAL(AC_CV_NAME,
[ifelse([$2],,,[echo "configure:__oline__: ...version $2 required" >&AS_MESSAGE_LOG_FD
  ])if ($PERL -m$1[]ifelse([$2],,,[=$2]) -e 1) 1>&AS_MESSAGE_LOG_FD 2>&1; then
    AC_CV_NAME=yes
  else
    AC_CV_NAME=no
  fi
])dnl
AC_MSG_RESULT([$]AC_CV_NAME)
])dnl

dnl Set path to program, or use automake's "missing"
dnl LOCAL_PROG_OR_MISSING(PROG)
AC_DEFUN(LOCAL_PROG_OR_MISSING,
[ # find path or use "missing"
define([PROG_VAR], translit([$1], [a-z-], [A-Z_]))
AC_PATH_PROG(PROG_VAR, [$1], [$ac_aux_dir/missing $1])
])dnl