1dnl This Source Code Form is subject to the terms of the Mozilla Public 2dnl License, v. 2.0. If a copy of the MPL was not distributed with this 3dnl file, You can obtain one at http://mozilla.org/MPL/2.0/. 4 5dnl Wrap AC_INIT_PREPARE to add the above trap. 6define([_MOZ_AC_INIT_PREPARE], defn([AC_INIT_PREPARE])) 7define([AC_INIT_PREPARE], 8[_MOZ_AC_INIT_PREPARE($1) 9 10test "x$prefix" = xNONE && prefix=$ac_default_prefix 11# Let make expand exec_prefix. 12test "x$exec_prefix" = xNONE && exec_prefix='${prefix}' 13]) 14 15dnl Print error messages in config.log as well as stderr 16define([AC_MSG_ERROR], 17[{ echo "configure: error: $1" 1>&2; echo "configure: error: $1" 1>&5; exit 1; }]) 18 19dnl Divert AC_TRY_COMPILER to make ac_cv_prog_*_works actually cached. 20dnl This will allow to just skip the test when python configure has set 21dnl the value for us. But since ac_cv_prog_*_cross is calculated at the same 22dnl time, and has a different meaning as in python configure, we only want to 23dnl use its value to display whether a cross-compile is happening. We forbid 24dnl configure tests that would rely on ac_cv_prog_*_cross autoconf meaning 25dnl (being able to execute the product of compilation), which are already bad 26dnl for cross compiles anyways, so it's a win to get rid of them. 27define([_MOZ_AC_TRY_COMPILER], defn([AC_TRY_COMPILER])) 28define([AC_TRY_COMPILER], [AC_CACHE_VAL($2, _MOZ_AC_TRY_COMPILER($1, $2, $3))]) 29 30define([AC_TRY_RUN], [m4_fatal([AC_TRY_RUN is forbidden])]) 31define([AC_CHECK_FILE], [m4_fatal([AC_CHECK_FILE is forbidden])]) 32