src/third-party/libpng/aclocal.m4 (view raw)
1# generated automatically by aclocal 1.15 -*- Autoconf -*-
2
3# Copyright (C) 1996-2014 Free Software Foundation, Inc.
4
5# This file is free software; the Free Software Foundation
6# gives unlimited permission to copy and/or distribute it,
7# with or without modifications, as long as this notice is preserved.
8
9# This program is distributed in the hope that it will be useful,
10# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
11# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
12# PARTICULAR PURPOSE.
13
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23# Copyright (C) 2002-2014 Free Software Foundation, Inc.
24#
25# This file is free software; the Free Software Foundation
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27# with or without modifications, as long as this notice is preserved.
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59# Figure out how to run the assembler. -*- Autoconf -*-
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61# Copyright (C) 2001-2014 Free Software Foundation, Inc.
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81# Copyright (C) 2001-2014 Free Software Foundation, Inc.
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133# Copyright (C) 1997-2014 Free Software Foundation, Inc.
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164# Copyright (C) 1999-2014 Free Software Foundation, Inc.
165#
166# This file is free software; the Free Software Foundation
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353# Generate code to set up dependency tracking. -*- Autoconf -*-
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355# Copyright (C) 1999-2014 Free Software Foundation, Inc.
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429# Do all the work for Automake. -*- Autoconf -*-
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431# Copyright (C) 1996-2014 Free Software Foundation, Inc.
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433# This file is free software; the Free Software Foundation
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539 [_AM_DEPENDENCIES([OBJC])],
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541 m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
542AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
543 [_AM_DEPENDENCIES([OBJCXX])],
544 [m4_define([AC_PROG_OBJCXX],
545 m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
546])
547AC_REQUIRE([AM_SILENT_RULES])dnl
548dnl The testsuite driver may need to know about EXEEXT, so add the
549dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen. This
550dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
551AC_CONFIG_COMMANDS_PRE(dnl
552[m4_provide_if([_AM_COMPILER_EXEEXT],
553 [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
554
555# POSIX will say in a future version that running "rm -f" with no argument
556# is OK; and we want to be able to make that assumption in our Makefile
557# recipes. So use an aggressive probe to check that the usage we want is
558# actually supported "in the wild" to an acceptable degree.
559# See automake bug#10828.
560# To make any issue more visible, cause the running configure to be aborted
561# by default if the 'rm' program in use doesn't match our expectations; the
562# user can still override this though.
563if rm -f && rm -fr && rm -rf; then : OK; else
564 cat >&2 <<'END'
565Oops!
566
567Your 'rm' program seems unable to run without file operands specified
568on the command line, even when the '-f' option is present. This is contrary
569to the behaviour of most rm programs out there, and not conforming with
570the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
571
572Please tell bug-automake@gnu.org about your system, including the value
573of your $PATH and any error possibly output before this message. This
574can help us improve future automake versions.
575
576END
577 if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
578 echo 'Configuration will proceed anyway, since you have set the' >&2
579 echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
580 echo >&2
581 else
582 cat >&2 <<'END'
583Aborting the configuration process, to ensure you take notice of the issue.
584
585You can download and install GNU coreutils to get an 'rm' implementation
586that behaves properly: <http://www.gnu.org/software/coreutils/>.
587
588If you want to complete the configuration process using your problematic
589'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
590to "yes", and re-run configure.
591
592END
593 AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
594 fi
595fi
596dnl The trailing newline in this macro's definition is deliberate, for
597dnl backward compatibility and to allow trailing 'dnl'-style comments
598dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
599])
600
601dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion. Do not
602dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
603dnl mangled by Autoconf and run in a shell conditional statement.
604m4_define([_AC_COMPILER_EXEEXT],
605m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
606
607# When config.status generates a header, we must update the stamp-h file.
608# This file resides in the same directory as the config header
609# that is generated. The stamp files are numbered to have different names.
610
611# Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
612# loop where config.status creates the headers, so we can generate
613# our stamp files there.
614AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
615[# Compute $1's index in $config_headers.
616_am_arg=$1
617_am_stamp_count=1
618for _am_header in $config_headers :; do
619 case $_am_header in
620 $_am_arg | $_am_arg:* )
621 break ;;
622 * )
623 _am_stamp_count=`expr $_am_stamp_count + 1` ;;
624 esac
625done
626echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
627
628# Copyright (C) 2001-2014 Free Software Foundation, Inc.
629#
630# This file is free software; the Free Software Foundation
631# gives unlimited permission to copy and/or distribute it,
632# with or without modifications, as long as this notice is preserved.
633
634# AM_PROG_INSTALL_SH
635# ------------------
636# Define $install_sh.
637AC_DEFUN([AM_PROG_INSTALL_SH],
638[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
639if test x"${install_sh+set}" != xset; then
640 case $am_aux_dir in
641 *\ * | *\ *)
642 install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
643 *)
644 install_sh="\${SHELL} $am_aux_dir/install-sh"
645 esac
646fi
647AC_SUBST([install_sh])])
648
649# Copyright (C) 2003-2014 Free Software Foundation, Inc.
650#
651# This file is free software; the Free Software Foundation
652# gives unlimited permission to copy and/or distribute it,
653# with or without modifications, as long as this notice is preserved.
654
655# Check whether the underlying file-system supports filenames
656# with a leading dot. For instance MS-DOS doesn't.
657AC_DEFUN([AM_SET_LEADING_DOT],
658[rm -rf .tst 2>/dev/null
659mkdir .tst 2>/dev/null
660if test -d .tst; then
661 am__leading_dot=.
662else
663 am__leading_dot=_
664fi
665rmdir .tst 2>/dev/null
666AC_SUBST([am__leading_dot])])
667
668# Add --enable-maintainer-mode option to configure. -*- Autoconf -*-
669# From Jim Meyering
670
671# Copyright (C) 1996-2014 Free Software Foundation, Inc.
672#
673# This file is free software; the Free Software Foundation
674# gives unlimited permission to copy and/or distribute it,
675# with or without modifications, as long as this notice is preserved.
676
677# AM_MAINTAINER_MODE([DEFAULT-MODE])
678# ----------------------------------
679# Control maintainer-specific portions of Makefiles.
680# Default is to disable them, unless 'enable' is passed literally.
681# For symmetry, 'disable' may be passed as well. Anyway, the user
682# can override the default with the --enable/--disable switch.
683AC_DEFUN([AM_MAINTAINER_MODE],
684[m4_case(m4_default([$1], [disable]),
685 [enable], [m4_define([am_maintainer_other], [disable])],
686 [disable], [m4_define([am_maintainer_other], [enable])],
687 [m4_define([am_maintainer_other], [enable])
688 m4_warn([syntax], [unexpected argument to AM@&t@_MAINTAINER_MODE: $1])])
689AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
690 dnl maintainer-mode's default is 'disable' unless 'enable' is passed
691 AC_ARG_ENABLE([maintainer-mode],
692 [AS_HELP_STRING([--]am_maintainer_other[-maintainer-mode],
693 am_maintainer_other[ make rules and dependencies not useful
694 (and sometimes confusing) to the casual installer])],
695 [USE_MAINTAINER_MODE=$enableval],
696 [USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes]))
697 AC_MSG_RESULT([$USE_MAINTAINER_MODE])
698 AM_CONDITIONAL([MAINTAINER_MODE], [test $USE_MAINTAINER_MODE = yes])
699 MAINT=$MAINTAINER_MODE_TRUE
700 AC_SUBST([MAINT])dnl
701]
702)
703
704# Check to see how 'make' treats includes. -*- Autoconf -*-
705
706# Copyright (C) 2001-2014 Free Software Foundation, Inc.
707#
708# This file is free software; the Free Software Foundation
709# gives unlimited permission to copy and/or distribute it,
710# with or without modifications, as long as this notice is preserved.
711
712# AM_MAKE_INCLUDE()
713# -----------------
714# Check to see how make treats includes.
715AC_DEFUN([AM_MAKE_INCLUDE],
716[am_make=${MAKE-make}
717cat > confinc << 'END'
718am__doit:
719 @echo this is the am__doit target
720.PHONY: am__doit
721END
722# If we don't find an include directive, just comment out the code.
723AC_MSG_CHECKING([for style of include used by $am_make])
724am__include="#"
725am__quote=
726_am_result=none
727# First try GNU make style include.
728echo "include confinc" > confmf
729# Ignore all kinds of additional output from 'make'.
730case `$am_make -s -f confmf 2> /dev/null` in #(
731*the\ am__doit\ target*)
732 am__include=include
733 am__quote=
734 _am_result=GNU
735 ;;
736esac
737# Now try BSD make style include.
738if test "$am__include" = "#"; then
739 echo '.include "confinc"' > confmf
740 case `$am_make -s -f confmf 2> /dev/null` in #(
741 *the\ am__doit\ target*)
742 am__include=.include
743 am__quote="\""
744 _am_result=BSD
745 ;;
746 esac
747fi
748AC_SUBST([am__include])
749AC_SUBST([am__quote])
750AC_MSG_RESULT([$_am_result])
751rm -f confinc confmf
752])
753
754# Fake the existence of programs that GNU maintainers use. -*- Autoconf -*-
755
756# Copyright (C) 1997-2014 Free Software Foundation, Inc.
757#
758# This file is free software; the Free Software Foundation
759# gives unlimited permission to copy and/or distribute it,
760# with or without modifications, as long as this notice is preserved.
761
762# AM_MISSING_PROG(NAME, PROGRAM)
763# ------------------------------
764AC_DEFUN([AM_MISSING_PROG],
765[AC_REQUIRE([AM_MISSING_HAS_RUN])
766$1=${$1-"${am_missing_run}$2"}
767AC_SUBST($1)])
768
769# AM_MISSING_HAS_RUN
770# ------------------
771# Define MISSING if not defined so far and test if it is modern enough.
772# If it is, set am_missing_run to use it, otherwise, to nothing.
773AC_DEFUN([AM_MISSING_HAS_RUN],
774[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
775AC_REQUIRE_AUX_FILE([missing])dnl
776if test x"${MISSING+set}" != xset; then
777 case $am_aux_dir in
778 *\ * | *\ *)
779 MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
780 *)
781 MISSING="\${SHELL} $am_aux_dir/missing" ;;
782 esac
783fi
784# Use eval to expand $SHELL
785if eval "$MISSING --is-lightweight"; then
786 am_missing_run="$MISSING "
787else
788 am_missing_run=
789 AC_MSG_WARN(['missing' script is too old or missing])
790fi
791])
792
793# Helper functions for option handling. -*- Autoconf -*-
794
795# Copyright (C) 2001-2014 Free Software Foundation, Inc.
796#
797# This file is free software; the Free Software Foundation
798# gives unlimited permission to copy and/or distribute it,
799# with or without modifications, as long as this notice is preserved.
800
801# _AM_MANGLE_OPTION(NAME)
802# -----------------------
803AC_DEFUN([_AM_MANGLE_OPTION],
804[[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
805
806# _AM_SET_OPTION(NAME)
807# --------------------
808# Set option NAME. Presently that only means defining a flag for this option.
809AC_DEFUN([_AM_SET_OPTION],
810[m4_define(_AM_MANGLE_OPTION([$1]), [1])])
811
812# _AM_SET_OPTIONS(OPTIONS)
813# ------------------------
814# OPTIONS is a space-separated list of Automake options.
815AC_DEFUN([_AM_SET_OPTIONS],
816[m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
817
818# _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
819# -------------------------------------------
820# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
821AC_DEFUN([_AM_IF_OPTION],
822[m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
823
824# Copyright (C) 1999-2014 Free Software Foundation, Inc.
825#
826# This file is free software; the Free Software Foundation
827# gives unlimited permission to copy and/or distribute it,
828# with or without modifications, as long as this notice is preserved.
829
830# _AM_PROG_CC_C_O
831# ---------------
832# Like AC_PROG_CC_C_O, but changed for automake. We rewrite AC_PROG_CC
833# to automatically call this.
834AC_DEFUN([_AM_PROG_CC_C_O],
835[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
836AC_REQUIRE_AUX_FILE([compile])dnl
837AC_LANG_PUSH([C])dnl
838AC_CACHE_CHECK(
839 [whether $CC understands -c and -o together],
840 [am_cv_prog_cc_c_o],
841 [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
842 # Make sure it works both with $CC and with simple cc.
843 # Following AC_PROG_CC_C_O, we do the test twice because some
844 # compilers refuse to overwrite an existing .o file with -o,
845 # though they will create one.
846 am_cv_prog_cc_c_o=yes
847 for am_i in 1 2; do
848 if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
849 && test -f conftest2.$ac_objext; then
850 : OK
851 else
852 am_cv_prog_cc_c_o=no
853 break
854 fi
855 done
856 rm -f core conftest*
857 unset am_i])
858if test "$am_cv_prog_cc_c_o" != yes; then
859 # Losing compiler, so override with the script.
860 # FIXME: It is wrong to rewrite CC.
861 # But if we don't then we get into trouble of one sort or another.
862 # A longer-term fix would be to have automake use am__CC in this case,
863 # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
864 CC="$am_aux_dir/compile $CC"
865fi
866AC_LANG_POP([C])])
867
868# For backward compatibility.
869AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
870
871# Copyright (C) 2001-2014 Free Software Foundation, Inc.
872#
873# This file is free software; the Free Software Foundation
874# gives unlimited permission to copy and/or distribute it,
875# with or without modifications, as long as this notice is preserved.
876
877# AM_RUN_LOG(COMMAND)
878# -------------------
879# Run COMMAND, save the exit status in ac_status, and log it.
880# (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
881AC_DEFUN([AM_RUN_LOG],
882[{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
883 ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
884 ac_status=$?
885 echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
886 (exit $ac_status); }])
887
888# Check to make sure that the build environment is sane. -*- Autoconf -*-
889
890# Copyright (C) 1996-2014 Free Software Foundation, Inc.
891#
892# This file is free software; the Free Software Foundation
893# gives unlimited permission to copy and/or distribute it,
894# with or without modifications, as long as this notice is preserved.
895
896# AM_SANITY_CHECK
897# ---------------
898AC_DEFUN([AM_SANITY_CHECK],
899[AC_MSG_CHECKING([whether build environment is sane])
900# Reject unsafe characters in $srcdir or the absolute working directory
901# name. Accept space and tab only in the latter.
902am_lf='
903'
904case `pwd` in
905 *[[\\\"\#\$\&\'\`$am_lf]]*)
906 AC_MSG_ERROR([unsafe absolute working directory name]);;
907esac
908case $srcdir in
909 *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
910 AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
911esac
912
913# Do 'set' in a subshell so we don't clobber the current shell's
914# arguments. Must try -L first in case configure is actually a
915# symlink; some systems play weird games with the mod time of symlinks
916# (eg FreeBSD returns the mod time of the symlink's containing
917# directory).
918if (
919 am_has_slept=no
920 for am_try in 1 2; do
921 echo "timestamp, slept: $am_has_slept" > conftest.file
922 set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
923 if test "$[*]" = "X"; then
924 # -L didn't work.
925 set X `ls -t "$srcdir/configure" conftest.file`
926 fi
927 if test "$[*]" != "X $srcdir/configure conftest.file" \
928 && test "$[*]" != "X conftest.file $srcdir/configure"; then
929
930 # If neither matched, then we have a broken ls. This can happen
931 # if, for instance, CONFIG_SHELL is bash and it inherits a
932 # broken ls alias from the environment. This has actually
933 # happened. Such a system could not be considered "sane".
934 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
935 alias in your environment])
936 fi
937 if test "$[2]" = conftest.file || test $am_try -eq 2; then
938 break
939 fi
940 # Just in case.
941 sleep 1
942 am_has_slept=yes
943 done
944 test "$[2]" = conftest.file
945 )
946then
947 # Ok.
948 :
949else
950 AC_MSG_ERROR([newly created file is older than distributed files!
951Check your system clock])
952fi
953AC_MSG_RESULT([yes])
954# If we didn't sleep, we still need to ensure time stamps of config.status and
955# generated files are strictly newer.
956am_sleep_pid=
957if grep 'slept: no' conftest.file >/dev/null 2>&1; then
958 ( sleep 1 ) &
959 am_sleep_pid=$!
960fi
961AC_CONFIG_COMMANDS_PRE(
962 [AC_MSG_CHECKING([that generated files are newer than configure])
963 if test -n "$am_sleep_pid"; then
964 # Hide warnings about reused PIDs.
965 wait $am_sleep_pid 2>/dev/null
966 fi
967 AC_MSG_RESULT([done])])
968rm -f conftest.file
969])
970
971# Copyright (C) 2009-2014 Free Software Foundation, Inc.
972#
973# This file is free software; the Free Software Foundation
974# gives unlimited permission to copy and/or distribute it,
975# with or without modifications, as long as this notice is preserved.
976
977# AM_SILENT_RULES([DEFAULT])
978# --------------------------
979# Enable less verbose build rules; with the default set to DEFAULT
980# ("yes" being less verbose, "no" or empty being verbose).
981AC_DEFUN([AM_SILENT_RULES],
982[AC_ARG_ENABLE([silent-rules], [dnl
983AS_HELP_STRING(
984 [--enable-silent-rules],
985 [less verbose build output (undo: "make V=1")])
986AS_HELP_STRING(
987 [--disable-silent-rules],
988 [verbose build output (undo: "make V=0")])dnl
989])
990case $enable_silent_rules in @%:@ (((
991 yes) AM_DEFAULT_VERBOSITY=0;;
992 no) AM_DEFAULT_VERBOSITY=1;;
993 *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
994esac
995dnl
996dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
997dnl do not support nested variable expansions.
998dnl See automake bug#9928 and bug#10237.
999am_make=${MAKE-make}
1000AC_CACHE_CHECK([whether $am_make supports nested variables],
1001 [am_cv_make_support_nested_variables],
1002 [if AS_ECHO([['TRUE=$(BAR$(V))
1003BAR0=false
1004BAR1=true
1005V=1
1006am__doit:
1007 @$(TRUE)
1008.PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
1009 am_cv_make_support_nested_variables=yes
1010else
1011 am_cv_make_support_nested_variables=no
1012fi])
1013if test $am_cv_make_support_nested_variables = yes; then
1014 dnl Using '$V' instead of '$(V)' breaks IRIX make.
1015 AM_V='$(V)'
1016 AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
1017else
1018 AM_V=$AM_DEFAULT_VERBOSITY
1019 AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
1020fi
1021AC_SUBST([AM_V])dnl
1022AM_SUBST_NOTMAKE([AM_V])dnl
1023AC_SUBST([AM_DEFAULT_V])dnl
1024AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
1025AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
1026AM_BACKSLASH='\'
1027AC_SUBST([AM_BACKSLASH])dnl
1028_AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
1029])
1030
1031# Copyright (C) 2001-2014 Free Software Foundation, Inc.
1032#
1033# This file is free software; the Free Software Foundation
1034# gives unlimited permission to copy and/or distribute it,
1035# with or without modifications, as long as this notice is preserved.
1036
1037# AM_PROG_INSTALL_STRIP
1038# ---------------------
1039# One issue with vendor 'install' (even GNU) is that you can't
1040# specify the program used to strip binaries. This is especially
1041# annoying in cross-compiling environments, where the build's strip
1042# is unlikely to handle the host's binaries.
1043# Fortunately install-sh will honor a STRIPPROG variable, so we
1044# always use install-sh in "make install-strip", and initialize
1045# STRIPPROG with the value of the STRIP variable (set by the user).
1046AC_DEFUN([AM_PROG_INSTALL_STRIP],
1047[AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
1048# Installed binaries are usually stripped using 'strip' when the user
1049# run "make install-strip". However 'strip' might not be the right
1050# tool to use in cross-compilation environments, therefore Automake
1051# will honor the 'STRIP' environment variable to overrule this program.
1052dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
1053if test "$cross_compiling" != no; then
1054 AC_CHECK_TOOL([STRIP], [strip], :)
1055fi
1056INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
1057AC_SUBST([INSTALL_STRIP_PROGRAM])])
1058
1059# Copyright (C) 2006-2014 Free Software Foundation, Inc.
1060#
1061# This file is free software; the Free Software Foundation
1062# gives unlimited permission to copy and/or distribute it,
1063# with or without modifications, as long as this notice is preserved.
1064
1065# _AM_SUBST_NOTMAKE(VARIABLE)
1066# ---------------------------
1067# Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
1068# This macro is traced by Automake.
1069AC_DEFUN([_AM_SUBST_NOTMAKE])
1070
1071# AM_SUBST_NOTMAKE(VARIABLE)
1072# --------------------------
1073# Public sister of _AM_SUBST_NOTMAKE.
1074AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
1075
1076# Check how to create a tarball. -*- Autoconf -*-
1077
1078# Copyright (C) 2004-2014 Free Software Foundation, Inc.
1079#
1080# This file is free software; the Free Software Foundation
1081# gives unlimited permission to copy and/or distribute it,
1082# with or without modifications, as long as this notice is preserved.
1083
1084# _AM_PROG_TAR(FORMAT)
1085# --------------------
1086# Check how to create a tarball in format FORMAT.
1087# FORMAT should be one of 'v7', 'ustar', or 'pax'.
1088#
1089# Substitute a variable $(am__tar) that is a command
1090# writing to stdout a FORMAT-tarball containing the directory
1091# $tardir.
1092# tardir=directory && $(am__tar) > result.tar
1093#
1094# Substitute a variable $(am__untar) that extract such
1095# a tarball read from stdin.
1096# $(am__untar) < result.tar
1097#
1098AC_DEFUN([_AM_PROG_TAR],
1099[# Always define AMTAR for backward compatibility. Yes, it's still used
1100# in the wild :-( We should find a proper way to deprecate it ...
1101AC_SUBST([AMTAR], ['$${TAR-tar}'])
1102
1103# We'll loop over all known methods to create a tar archive until one works.
1104_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
1105
1106m4_if([$1], [v7],
1107 [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
1108
1109 [m4_case([$1],
1110 [ustar],
1111 [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
1112 # There is notably a 21 bits limit for the UID and the GID. In fact,
1113 # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
1114 # and bug#13588).
1115 am_max_uid=2097151 # 2^21 - 1
1116 am_max_gid=$am_max_uid
1117 # The $UID and $GID variables are not portable, so we need to resort
1118 # to the POSIX-mandated id(1) utility. Errors in the 'id' calls
1119 # below are definitely unexpected, so allow the users to see them
1120 # (that is, avoid stderr redirection).
1121 am_uid=`id -u || echo unknown`
1122 am_gid=`id -g || echo unknown`
1123 AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
1124 if test $am_uid -le $am_max_uid; then
1125 AC_MSG_RESULT([yes])
1126 else
1127 AC_MSG_RESULT([no])
1128 _am_tools=none
1129 fi
1130 AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
1131 if test $am_gid -le $am_max_gid; then
1132 AC_MSG_RESULT([yes])
1133 else
1134 AC_MSG_RESULT([no])
1135 _am_tools=none
1136 fi],
1137
1138 [pax],
1139 [],
1140
1141 [m4_fatal([Unknown tar format])])
1142
1143 AC_MSG_CHECKING([how to create a $1 tar archive])
1144
1145 # Go ahead even if we have the value already cached. We do so because we
1146 # need to set the values for the 'am__tar' and 'am__untar' variables.
1147 _am_tools=${am_cv_prog_tar_$1-$_am_tools}
1148
1149 for _am_tool in $_am_tools; do
1150 case $_am_tool in
1151 gnutar)
1152 for _am_tar in tar gnutar gtar; do
1153 AM_RUN_LOG([$_am_tar --version]) && break
1154 done
1155 am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
1156 am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
1157 am__untar="$_am_tar -xf -"
1158 ;;
1159 plaintar)
1160 # Must skip GNU tar: if it does not support --format= it doesn't create
1161 # ustar tarball either.
1162 (tar --version) >/dev/null 2>&1 && continue
1163 am__tar='tar chf - "$$tardir"'
1164 am__tar_='tar chf - "$tardir"'
1165 am__untar='tar xf -'
1166 ;;
1167 pax)
1168 am__tar='pax -L -x $1 -w "$$tardir"'
1169 am__tar_='pax -L -x $1 -w "$tardir"'
1170 am__untar='pax -r'
1171 ;;
1172 cpio)
1173 am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
1174 am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
1175 am__untar='cpio -i -H $1 -d'
1176 ;;
1177 none)
1178 am__tar=false
1179 am__tar_=false
1180 am__untar=false
1181 ;;
1182 esac
1183
1184 # If the value was cached, stop now. We just wanted to have am__tar
1185 # and am__untar set.
1186 test -n "${am_cv_prog_tar_$1}" && break
1187
1188 # tar/untar a dummy directory, and stop if the command works.
1189 rm -rf conftest.dir
1190 mkdir conftest.dir
1191 echo GrepMe > conftest.dir/file
1192 AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
1193 rm -rf conftest.dir
1194 if test -s conftest.tar; then
1195 AM_RUN_LOG([$am__untar <conftest.tar])
1196 AM_RUN_LOG([cat conftest.dir/file])
1197 grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
1198 fi
1199 done
1200 rm -rf conftest.dir
1201
1202 AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
1203 AC_MSG_RESULT([$am_cv_prog_tar_$1])])
1204
1205AC_SUBST([am__tar])
1206AC_SUBST([am__untar])
1207]) # _AM_PROG_TAR
1208
1209m4_include([scripts/libtool.m4])
1210m4_include([scripts/ltoptions.m4])
1211m4_include([scripts/ltsugar.m4])
1212m4_include([scripts/ltversion.m4])
1213m4_include([scripts/lt~obsolete.m4])