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Presently that only means defining a flag for this option. 693AC_DEFUN([_AM_SET_OPTION], 694[m4_define(_AM_MANGLE_OPTION([$1]), 1)]) 695 696# _AM_SET_OPTIONS(OPTIONS) 697# ---------------------------------- 698# OPTIONS is a space-separated list of Automake options. 699AC_DEFUN([_AM_SET_OPTIONS], 700[AC_FOREACH([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])]) 701 702# _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET]) 703# ------------------------------------------- 704# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise. 705AC_DEFUN([_AM_IF_OPTION], 706[m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])]) 707 708# Check to make sure that the build environment is sane. -*- Autoconf -*- 709 710# Copyright (C) 1996, 1997, 2000, 2001, 2003, 2005 711# Free Software Foundation, Inc. 712# 713# This file is free software; the Free Software Foundation 714# gives unlimited permission to copy and/or distribute it, 715# with or without modifications, as long as this notice is preserved. 716 717# serial 4 718 719# AM_SANITY_CHECK 720# --------------- 721AC_DEFUN([AM_SANITY_CHECK], 722[AC_MSG_CHECKING([whether build environment is sane]) 723# Just in case 724sleep 1 725echo timestamp > conftest.file 726# Do `set' in a subshell so we don't clobber the current shell's 727# arguments. Must try -L first in case configure is actually a 728# symlink; some systems play weird games with the mod time of symlinks 729# (eg FreeBSD returns the mod time of the symlink's containing 730# directory). 731if ( 732 set X `ls -Lt $srcdir/configure conftest.file 2> /dev/null` 733 if test "$[*]" = "X"; then 734 # -L didn't work. 735 set X `ls -t $srcdir/configure conftest.file` 736 fi 737 rm -f conftest.file 738 if test "$[*]" != "X $srcdir/configure conftest.file" \ 739 && test "$[*]" != "X conftest.file $srcdir/configure"; then 740 741 # If neither matched, then we have a broken ls. This can happen 742 # if, for instance, CONFIG_SHELL is bash and it inherits a 743 # broken ls alias from the environment. This has actually 744 # happened. Such a system could not be considered "sane". 745 AC_MSG_ERROR([ls -t appears to fail. 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However `strip' might not be the right 779# tool to use in cross-compilation environments, therefore Automake 780# will honor the `STRIP' environment variable to overrule this program. 781dnl Don't test for $cross_compiling = yes, because it might be `maybe'. 782if test "$cross_compiling" != no; then 783 AC_CHECK_TOOL([STRIP], [strip], :) 784fi 785INSTALL_STRIP_PROGRAM="\${SHELL} \$(install_sh) -c -s" 786AC_SUBST([INSTALL_STRIP_PROGRAM])]) 787 788# Check how to create a tarball. -*- Autoconf -*- 789 790# Copyright (C) 2004, 2005 Free Software Foundation, Inc. 791# 792# This file is free software; the Free Software Foundation 793# gives unlimited permission to copy and/or distribute it, 794# with or without modifications, as long as this notice is preserved. 795 796# serial 2 797 798# _AM_PROG_TAR(FORMAT) 799# -------------------- 800# Check how to create a tarball in format FORMAT. 801# FORMAT should be one of `v7', `ustar', or `pax'. 802# 803# Substitute a variable $(am__tar) that is a command 804# writing to stdout a FORMAT-tarball containing the directory 805# $tardir. 806# tardir=directory && $(am__tar) > result.tar 807# 808# Substitute a variable $(am__untar) that extract such 809# a tarball read from stdin. 810# $(am__untar) < result.tar 811AC_DEFUN([_AM_PROG_TAR], 812[# Always define AMTAR for backward compatibility. 813AM_MISSING_PROG([AMTAR], [tar]) 814m4_if([$1], [v7], 815 [am__tar='${AMTAR} chof - "$$tardir"'; am__untar='${AMTAR} xf -'], 816 [m4_case([$1], [ustar],, [pax],, 817 [m4_fatal([Unknown tar format])]) 818AC_MSG_CHECKING([how to create a $1 tar archive]) 819# Loop over all known methods to create a tar archive until one works. 820_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none' 821_am_tools=${am_cv_prog_tar_$1-$_am_tools} 822# Do not fold the above two line into one, because Tru64 sh and 823# Solaris sh will not grok spaces in the rhs of `-'. 824for _am_tool in $_am_tools 825do 826 case $_am_tool in 827 gnutar) 828 for _am_tar in tar gnutar gtar; 829 do 830 AM_RUN_LOG([$_am_tar --version]) && break 831 done 832 am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"' 833 am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"' 834 am__untar="$_am_tar -xf -" 835 ;; 836 plaintar) 837 # Must skip GNU tar: if it does not support --format= it doesn't create 838 # ustar tarball either. 839 (tar --version) >/dev/null 2>&1 && continue 840 am__tar='tar chf - "$$tardir"' 841 am__tar_='tar chf - "$tardir"' 842 am__untar='tar xf -' 843 ;; 844 pax) 845 am__tar='pax -L -x $1 -w "$$tardir"' 846 am__tar_='pax -L -x $1 -w "$tardir"' 847 am__untar='pax -r' 848 ;; 849 cpio) 850 am__tar='find "$$tardir" -print | cpio -o -H $1 -L' 851 am__tar_='find "$tardir" -print | cpio -o -H $1 -L' 852 am__untar='cpio -i -H $1 -d' 853 ;; 854 none) 855 am__tar=false 856 am__tar_=false 857 am__untar=false 858 ;; 859 esac 860 861 # If the value was cached, stop now. We just wanted to have am__tar 862 # and am__untar set. 863 test -n "${am_cv_prog_tar_$1}" && break 864 865 # tar/untar a dummy directory, and stop if the command works 866 rm -rf conftest.dir 867 mkdir conftest.dir 868 echo GrepMe > conftest.dir/file 869 AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar]) 870 rm -rf conftest.dir 871 if test -s conftest.tar; then 872 AM_RUN_LOG([$am__untar <conftest.tar]) 873 grep GrepMe conftest.dir/file >/dev/null 2>&1 && break 874 fi 875done 876rm -rf conftest.dir 877 878AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool]) 879AC_MSG_RESULT([$am_cv_prog_tar_$1])]) 880AC_SUBST([am__tar]) 881AC_SUBST([am__untar]) 882]) # _AM_PROG_TAR 883 884