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Presently that only means defining a flag for this option. 683AC_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. 689AC_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. 695AC_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# --------------- 711AC_DEFUN([AM_SANITY_CHECK], 712[AC_MSG_CHECKING([whether build environment is sane]) 713# Just in case 714sleep 1 715echo 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). 721if ( 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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However `strip' might not be the right 769# tool to use in cross-compilation environments, therefore Automake 770# will honor the `STRIP' environment variable to overrule this program. 771dnl Don't test for $cross_compiling = yes, because it might be `maybe'. 772if test "$cross_compiling" != no; then 773 AC_CHECK_TOOL([STRIP], [strip], :) 774fi 775INSTALL_STRIP_PROGRAM="\${SHELL} \$(install_sh) -c -s" 776AC_SUBST([INSTALL_STRIP_PROGRAM])]) 777 778# Check how to create a tarball. -*- Autoconf -*- 779 780# Copyright (C) 2004, 2005 Free Software Foundation, Inc. 781# 782# This file is free software; the Free Software Foundation 783# gives unlimited permission to copy and/or distribute it, 784# with or without modifications, as long as this notice is preserved. 785 786# serial 2 787 788# _AM_PROG_TAR(FORMAT) 789# -------------------- 790# Check how to create a tarball in format FORMAT. 791# FORMAT should be one of `v7', `ustar', or `pax'. 792# 793# Substitute a variable $(am__tar) that is a command 794# writing to stdout a FORMAT-tarball containing the directory 795# $tardir. 796# tardir=directory && $(am__tar) > result.tar 797# 798# Substitute a variable $(am__untar) that extract such 799# a tarball read from stdin. 800# $(am__untar) < result.tar 801AC_DEFUN([_AM_PROG_TAR], 802[# Always define AMTAR for backward compatibility. 803AM_MISSING_PROG([AMTAR], [tar]) 804m4_if([$1], [v7], 805 [am__tar='${AMTAR} chof - "$$tardir"'; am__untar='${AMTAR} xf -'], 806 [m4_case([$1], [ustar],, [pax],, 807 [m4_fatal([Unknown tar format])]) 808AC_MSG_CHECKING([how to create a $1 tar archive]) 809# Loop over all known methods to create a tar archive until one works. 810_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none' 811_am_tools=${am_cv_prog_tar_$1-$_am_tools} 812# Do not fold the above two line into one, because Tru64 sh and 813# Solaris sh will not grok spaces in the rhs of `-'. 814for _am_tool in $_am_tools 815do 816 case $_am_tool in 817 gnutar) 818 for _am_tar in tar gnutar gtar; 819 do 820 AM_RUN_LOG([$_am_tar --version]) && break 821 done 822 am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"' 823 am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"' 824 am__untar="$_am_tar -xf -" 825 ;; 826 plaintar) 827 # Must skip GNU tar: if it does not support --format= it doesn't create 828 # ustar tarball either. 829 (tar --version) >/dev/null 2>&1 && continue 830 am__tar='tar chf - "$$tardir"' 831 am__tar_='tar chf - "$tardir"' 832 am__untar='tar xf -' 833 ;; 834 pax) 835 am__tar='pax -L -x $1 -w "$$tardir"' 836 am__tar_='pax -L -x $1 -w "$tardir"' 837 am__untar='pax -r' 838 ;; 839 cpio) 840 am__tar='find "$$tardir" -print | cpio -o -H $1 -L' 841 am__tar_='find "$tardir" -print | cpio -o -H $1 -L' 842 am__untar='cpio -i -H $1 -d' 843 ;; 844 none) 845 am__tar=false 846 am__tar_=false 847 am__untar=false 848 ;; 849 esac 850 851 # If the value was cached, stop now. 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