m4/progtest.m4

   1 # Search path for a program which passes the given test.
   2 # Ulrich Drepper <drepper@cygnus.com>, 1996.
   3 #
   4 # This file can be copied and used freely without restrictions.  It can
   5 # be used in projects which are not available under the GNU General Public
   6 # License or the GNU Library General Public License but which still want
   7 # to provide support for the GNU gettext functionality.
   8 # Please note that the actual code of the GNU gettext library is covered
   9 # by the GNU Library General Public License, and the rest of the GNU
  10 # gettext package package is covered by the GNU General Public License.
  11 # They are *not* in the public domain.
  12
  13 # serial 2
  14
  15 dnl AM_PATH_PROG_WITH_TEST(VARIABLE, PROG-TO-CHECK-FOR,
  16 dnl   TEST-PERFORMED-ON-FOUND_PROGRAM [, VALUE-IF-NOT-FOUND [, PATH]])
  17 AC_DEFUN([AM_PATH_PROG_WITH_TEST],
  18 [# Extract the first word of "$2", so it can be a program name with args.
  19 set dummy $2; ac_word=[$]2
  20 AC_MSG_CHECKING([for $ac_word])
  21 AC_CACHE_VAL(ac_cv_path_$1,
  22 [case "[$]$1" in
  23   /*)
  24   ac_cv_path_$1="[$]$1" # Let the user override the test with a path.
  25   ;;
  26   *)
  27   IFS="${IFS=   }"; ac_save_ifs="$IFS"; IFS="${IFS}:"
  28   for ac_dir in ifelse([$5], , $PATH, [$5]); do
  29     test -z "$ac_dir" && ac_dir=.
  30     if test -f $ac_dir/$ac_word; then
  31       if [$3]; then
  32         ac_cv_path_$1="$ac_dir/$ac_word"
  33         break
  34       fi
  35     fi
  36   done
  37   IFS="$ac_save_ifs"
  38 dnl If no 4th arg is given, leave the cache variable unset,
  39 dnl so AC_PATH_PROGS will keep looking.
  40 ifelse([$4], , , [  test -z "[$]ac_cv_path_$1" && ac_cv_path_$1="$4"
  41 ])dnl
  42   ;;
  43 esac])dnl
  44 $1="$ac_cv_path_$1"
  45 if test ifelse([$4], , [-n "[$]$1"], ["[$]$1" != "$4"]); then
  46   AC_MSG_RESULT([$]$1)
  47 else
  48   AC_MSG_RESULT(no)
  49 fi
  50 AC_SUBST($1)dnl
  51 ])