| # |
| # Copyright 2014-2016 Nest Labs Inc. All Rights Reserved. |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| # |
| |
| # |
| # Description: |
| # This file implements a GNU M4 autoconf macro for checking for |
| # the existence of files. |
| # |
| # The autoconf version of AC_CHECK_FILE is absolutely broken in |
| # that it cannot check for files when cross-compiling even though |
| # the only thing it relies upon is a shell file readability |
| # check. |
| # |
| |
| # AX_CHECK_FILE(FILE, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) |
| # ------------------------------------------------------------- |
| # |
| # Check for the existence of FILE. |
| AC_DEFUN([AX_CHECK_FILE], |
| [AS_VAR_PUSHDEF([ac_File], [ac_cv_file_$1])dnl |
| AC_CACHE_CHECK([for $1], [ac_File], |
| [if test -r "$1"; then |
| AS_VAR_SET([ac_File], [yes]) |
| else |
| AS_VAR_SET([ac_File], [no]) |
| fi]) |
| AS_VAR_IF([ac_File], [yes], [$2], [$3]) |
| AS_VAR_POPDEF([ac_File])dnl |
| ])# AX_CHECK_FILE |