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Presently that only means defining a flag for this option. 683 AC_DEFUN([_AM_SET_OPTION], 684 [m4_define(_AM_MANGLE_OPTION([$1]), 1)]) 685 686 # _AM_SET_OPTIONS(OPTIONS) 687 # ---------------------------------- 688 # OPTIONS is a space-separated list of Automake options. 689 AC_DEFUN([_AM_SET_OPTIONS], 690 [AC_FOREACH([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])]) 691 692 # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET]) 693 # ------------------------------------------- 694 # Execute IF-SET if OPTION is set, IF-NOT-SET otherwise. 695 AC_DEFUN([_AM_IF_OPTION], 696 [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])]) 697 698 # Check to make sure that the build environment is sane. -*- Autoconf -*- 699 700 # Copyright (C) 1996, 1997, 2000, 2001, 2003, 2005 701 # Free Software Foundation, Inc. 702 # 703 # This file is free software; the Free Software Foundation 704 # gives unlimited permission to copy and/or distribute it, 705 # with or without modifications, as long as this notice is preserved. 706 707 # serial 4 708 709 # AM_SANITY_CHECK 710 # --------------- 711 AC_DEFUN([AM_SANITY_CHECK], 712 [AC_MSG_CHECKING([whether build environment is sane]) 713 # Just in case 714 sleep 1 715 echo timestamp > conftest.file 716 # Do `set' in a subshell so we don't clobber the current shell's 717 # arguments. Must try -L first in case configure is actually a 718 # symlink; some systems play weird games with the mod time of symlinks 719 # (eg FreeBSD returns the mod time of the symlink's containing 720 # directory). 721 if ( 722 set X `ls -Lt $srcdir/configure conftest.file 2> /dev/null` 723 if test "$[*]" = "X"; then 724 # -L didn't work. 725 set X `ls -t $srcdir/configure conftest.file` 726 fi 727 rm -f conftest.file 728 if test "$[*]" != "X $srcdir/configure conftest.file" \ 729 && test "$[*]" != "X conftest.file $srcdir/configure"; then 730 731 # If neither matched, then we have a broken ls. This can happen 732 # if, for instance, CONFIG_SHELL is bash and it inherits a 733 # broken ls alias from the environment. This has actually 734 # happened. Such a system could not be considered "sane". 735 AC_MSG_ERROR([ls -t appears to fail. 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