Blame m4/progtest.m4

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# progtest.m4 serial 7 (gettext-0.18.2)
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dnl Copyright (C) 1996-2003, 2005, 2008-2018 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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dnl
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dnl This file can be used in projects which are not available under
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dnl the GNU General Public License or the GNU Library General Public
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dnl License but which still want to provide support for the GNU gettext
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dnl functionality.
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dnl Please note that the actual code of the GNU gettext library is covered
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dnl by the GNU Library General Public License, and the rest of the GNU
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dnl gettext package is covered by the GNU General Public License.
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dnl They are *not* in the public domain.
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dnl Authors:
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dnl   Ulrich Drepper <drepper@cygnus.com>, 1996.
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AC_PREREQ([2.50])
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# Search path for a program which passes the given test.
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dnl AM_PATH_PROG_WITH_TEST(VARIABLE, PROG-TO-CHECK-FOR,
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dnl   TEST-PERFORMED-ON-FOUND_PROGRAM [, VALUE-IF-NOT-FOUND [, PATH]])
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AC_DEFUN([AM_PATH_PROG_WITH_TEST],
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[
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# Prepare PATH_SEPARATOR.
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# The user is always right.
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if test "${PATH_SEPARATOR+set}" != set; then
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  # Determine PATH_SEPARATOR by trying to find /bin/sh in a PATH which
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  # contains only /bin. Note that ksh looks also at the FPATH variable,
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  # so we have to set that as well for the test.
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  PATH_SEPARATOR=:
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  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
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    && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
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           || PATH_SEPARATOR=';'
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       }
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fi
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# Find out how to test for executable files. Don't use a zero-byte file,
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# as systems may use methods other than mode bits to determine executability.
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cat >conf$$.file <<_ASEOF
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#! /bin/sh
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exit 0
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_ASEOF
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chmod +x conf$$.file
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if test -x conf$$.file >/dev/null 2>&1; then
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  ac_executable_p="test -x"
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else
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  ac_executable_p="test -f"
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fi
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rm -f conf$$.file
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# Extract the first word of "$2", so it can be a program name with args.
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set dummy $2; ac_word=[$]2
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AC_MSG_CHECKING([for $ac_word])
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AC_CACHE_VAL([ac_cv_path_$1],
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[case "[$]$1" in
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  [[\\/]]* | ?:[[\\/]]*)
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    ac_cv_path_$1="[$]$1" # Let the user override the test with a path.
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    ;;
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  *)
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    ac_save_IFS="$IFS"; IFS=$PATH_SEPARATOR
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    for ac_dir in ifelse([$5], , $PATH, [$5]); do
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      IFS="$ac_save_IFS"
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      test -z "$ac_dir" && ac_dir=.
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      for ac_exec_ext in '' $ac_executable_extensions; do
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        if $ac_executable_p "$ac_dir/$ac_word$ac_exec_ext"; then
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          echo "$as_me: trying $ac_dir/$ac_word..." >&AS_MESSAGE_LOG_FD
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          if [$3]; then
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            ac_cv_path_$1="$ac_dir/$ac_word$ac_exec_ext"
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            break 2
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          fi
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        fi
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      done
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    done
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    IFS="$ac_save_IFS"
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dnl If no 4th arg is given, leave the cache variable unset,
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dnl so AC_PATH_PROGS will keep looking.
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ifelse([$4], , , [  test -z "[$]ac_cv_path_$1" && ac_cv_path_$1="$4"
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])dnl
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    ;;
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esac])dnl
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$1="$ac_cv_path_$1"
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if test ifelse([$4], , [-n "[$]$1"], ["[$]$1" != "$4"]); then
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  AC_MSG_RESULT([$][$1])
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else
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  AC_MSG_RESULT([no])
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fi
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AC_SUBST([$1])dnl
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])