FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/config/progtest.m4

     # progtest.m4 serial 7 (gettext-0.18.2)
     dnl Copyright (C) 1996-2003, 2005, 2008-2019 Free Software Foundation, Inc.
     dnl This file is free software; the Free Software Foundation
     dnl gives unlimited permission to copy and/or distribute it,
     dnl with or without modifications, as long as this notice is preserved.
     dnl
     dnl This file can be used in projects which are not available under
     dnl the GNU General Public License or the GNU Library General Public
     dnl License but which still want to provide support for the GNU gettext
    dnl functionality.
    dnl Please note that the actual code of the GNU gettext library is covered
    dnl by the GNU Library General Public License, and the rest of the GNU
    dnl gettext package is covered by the GNU General Public License.
    dnl They are *not* in the public domain.
    
    dnl Authors:
    dnl   Ulrich Drepper <drepper@cygnus.com>, 1996.
    
    AC_PREREQ([2.50])
    
    # Search path for a program which passes the given test.
    
    dnl AM_PATH_PROG_WITH_TEST(VARIABLE, PROG-TO-CHECK-FOR,
    dnl   TEST-PERFORMED-ON-FOUND_PROGRAM [, VALUE-IF-NOT-FOUND [, PATH]])
    AC_DEFUN([AM_PATH_PROG_WITH_TEST],
    [
    # Prepare PATH_SEPARATOR.
    # The user is always right.
    if test "${PATH_SEPARATOR+set}" != set; then
      # Determine PATH_SEPARATOR by trying to find /bin/sh in a PATH which
      # contains only /bin. Note that ksh looks also at the FPATH variable,
      # so we have to set that as well for the test.
      PATH_SEPARATOR=:
      (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
        && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
               || PATH_SEPARATOR=';'
           }
    fi
    
    # Find out how to test for executable files. Don't use a zero-byte file,
    # as systems may use methods other than mode bits to determine executability.
    cat >conf$$.file <<_ASEOF
    #! /bin/sh
    exit 0
    _ASEOF
    chmod +x conf$$.file
    if test -x conf$$.file >/dev/null 2>&1; then
      ac_executable_p="test -x"
    else
      ac_executable_p="test -f"
    fi
    rm -f conf$$.file
    
    # Extract the first word of "$2", so it can be a program name with args.
    set dummy $2; ac_word=[$]2
    AC_MSG_CHECKING([for $ac_word])
    AC_CACHE_VAL([ac_cv_path_$1],
    [case "[$]$1" in
      [[\\/]]* | ?:[[\\/]]*)
        ac_cv_path_$1="[$]$1" # Let the user override the test with a path.
        ;;
      *)
        ac_save_IFS="$IFS"; IFS=$PATH_SEPARATOR
        for ac_dir in ifelse([$5], , $PATH, [$5]); do
          IFS="$ac_save_IFS"
          test -z "$ac_dir" && ac_dir=.
          for ac_exec_ext in '' $ac_executable_extensions; do
            if $ac_executable_p "$ac_dir/$ac_word$ac_exec_ext"; then
              echo "$as_me: trying $ac_dir/$ac_word..." >&AS_MESSAGE_LOG_FD
              if [$3]; then
                ac_cv_path_$1="$ac_dir/$ac_word$ac_exec_ext"
                break 2
              fi
            fi
          done
        done
        IFS="$ac_save_IFS"
    dnl If no 4th arg is given, leave the cache variable unset,
    dnl so AC_PATH_PROGS will keep looking.
    ifelse([$4], , , [  test -z "[$]ac_cv_path_$1" && ac_cv_path_$1="$4"
    ])dnl
        ;;
    esac])dnl
    $1="$ac_cv_path_$1"
    if test ifelse([$4], , [-n "[$]$1"], ["[$]$1" != "$4"]); then
      AC_MSG_RESULT([$][$1])
    else
      AC_MSG_RESULT([no])
    fi
    AC_SUBST([$1])dnl
    ])

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