ax_path_missing

Check whether program prog-to-check-for exists in path. If it is found, set variable to the full path of prog-to-check-for, otherwise warn warning-if-not-found and set variable to the full path of the Automake missing script with prog-to-check-for as the command to run.

AC_DEFUN([AX_PATH_MISSING], [
    AC_PATH_PROG([$1], [$2], [$4])
    if test x${$1} = x; then
        AC_MSG_WARN([$3])
        AC_SUBST([$1], [${am_missing_run}[$2]])
    fi
])

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.