ltmain.sh

网络MPEG4IP流媒体开发源代码

    # Lock this critical section if it is needed
    # We use this script file to make the link, it avoids creating a new file
    if test "$need_locks" = yes; then
      until $run ln "$0" "$lockfile" 2>/dev/null; do
	$show "Waiting for $lockfile to be removed"
	sleep 2
      done
    elif test "$need_locks" = warn; then
      if test -f "$lockfile"; then
	echo "\
*** ERROR, $lockfile exists and contains:
`cat $lockfile 2>/dev/null`

This indicates that another process is trying to use the same
temporary object file, and libtool could not work around it because
your compiler does not support \`-c' and \`-o' together.  If you
repeat this compilation, it may succeed, by chance, but you had better
avoid parallel builds (make -j) in this platform, or get a better
compiler."

	$run $rm $removelist
	exit 1
      fi
      echo $srcfile > "$lockfile"
    fi

    if test -n "$fix_srcfile_path"; then
      eval srcfile=\"$fix_srcfile_path\"
    fi

    # Only build a PIC object if we are building libtool libraries.
    if test "$build_libtool_libs" = yes; then
      # Without this assignment, base_compile gets emptied.
      fbsd_hideous_sh_bug=$base_compile

      if test "$pic_mode" != no; then
	# All platforms use -DPIC, to notify preprocessed assembler code.
	command="$base_compile $srcfile $pic_flag -DPIC"
      else
	# Don't build PIC code
	command="$base_compile $srcfile"
      fi
      if test "$build_old_libs" = yes; then
	lo_libobj="$libobj"
	dir=`$echo "X$libobj" | $Xsed -e 's%/[^/]*$%%'`
	if test "X$dir" = "X$libobj"; then
	  dir="$objdir"
	else
	  dir="$dir/$objdir"
	fi
	libobj="$dir/"`$echo "X$libobj" | $Xsed -e 's%^.*/%%'`

	if test -d "$dir"; then
	  $show "$rm $libobj"
	  $run $rm $libobj
	else
	  $show "$mkdir $dir"
	  $run $mkdir $dir
	  status=$?
	  if test $status -ne 0 && test ! -d $dir; then
	    exit $status
	  fi
	fi
      fi
      if test "$compiler_o_lo" = yes; then
	output_obj="$libobj"
	command="$command -o $output_obj"
      elif test "$compiler_c_o" = yes; then
	output_obj="$obj"
	command="$command -o $output_obj"
      fi

      $run $rm "$output_obj"
      $show "$command"
      if $run eval "$command"; then :
      else
	test -n "$output_obj" && $run $rm $removelist
	exit 1
      fi

      if test "$need_locks" = warn &&
	 test x"`cat $lockfile 2>/dev/null`" != x"$srcfile"; then
	echo "\
*** ERROR, $lockfile contains:
`cat $lockfile 2>/dev/null`

but it should contain:
$srcfile

This indicates that another process is trying to use the same
temporary object file, and libtool could not work around it because
your compiler does not support \`-c' and \`-o' together.  If you
repeat this compilation, it may succeed, by chance, but you had better
avoid parallel builds (make -j) in this platform, or get a better
compiler."

	$run $rm $removelist
	exit 1
      fi

      # Just move the object if needed, then go on to compile the next one
      if test x"$output_obj" != x"$libobj"; then
	$show "$mv $output_obj $libobj"
	if $run $mv $output_obj $libobj; then :
	else
	  error=$?
	  $run $rm $removelist
	  exit $error
	fi
      fi

      # If we have no pic_flag, then copy the object into place and finish.
      if (test -z "$pic_flag" || test "$pic_mode" != default) &&
	 test "$build_old_libs" = yes; then
	# Rename the .lo from within objdir to obj
	if test -f $obj; then
	  $show $rm $obj
	  $run $rm $obj
	fi

	$show "$mv $libobj $obj"
	if $run $mv $libobj $obj; then :
	else
	  error=$?
	  $run $rm $removelist
	  exit $error
	fi

	xdir=`$echo "X$obj" | $Xsed -e 's%/[^/]*$%%'`
	if test "X$xdir" = "X$obj"; then
	  xdir="."
	else
	  xdir="$xdir"
	fi
	baseobj=`$echo "X$obj" | $Xsed -e "s%.*/%%"`
	libobj=`$echo "X$baseobj" | $Xsed -e "$o2lo"`
	# Now arrange that obj and lo_libobj become the same file
	$show "(cd $xdir && $LN_S $baseobj $libobj)"
	if $run eval '(cd $xdir && $LN_S $baseobj $libobj)'; then
	  # Unlock the critical section if it was locked
	  if test "$need_locks" != no; then
	    $run $rm "$lockfile"
	  fi
	  exit 0
	else
	  error=$?
	  $run $rm $removelist
	  exit $error
	fi
      fi

      # Allow error messages only from the first compilation.
      suppress_output=' >/dev/null 2>&1'
    fi

    # Only build a position-dependent object if we build old libraries.
    if test "$build_old_libs" = yes; then
      if test "$pic_mode" != yes; then
	# Don't build PIC code
	command="$base_compile $srcfile"
      else
	# All platforms use -DPIC, to notify preprocessed assembler code.
	command="$base_compile $srcfile $pic_flag -DPIC"
      fi
      if test "$compiler_c_o" = yes; then
	command="$command -o $obj"
	output_obj="$obj"
      fi

      # Suppress compiler output if we already did a PIC compilation.
      command="$command$suppress_output"
      $run $rm "$output_obj"
      $show "$command"
      if $run eval "$command"; then :
      else
	$run $rm $removelist
	exit 1
      fi

      if test "$need_locks" = warn &&
	 test x"`cat $lockfile 2>/dev/null`" != x"$srcfile"; then
	echo "\
*** ERROR, $lockfile contains:
`cat $lockfile 2>/dev/null`

but it should contain:
$srcfile

This indicates that another process is trying to use the same
temporary object file, and libtool could not work around it because
your compiler does not support \`-c' and \`-o' together.  If you
repeat this compilation, it may succeed, by chance, but you had better
avoid parallel builds (make -j) in this platform, or get a better
compiler."

	$run $rm $removelist
	exit 1
      fi

      # Just move the object if needed
      if test x"$output_obj" != x"$obj"; then
	$show "$mv $output_obj $obj"
	if $run $mv $output_obj $obj; then :
	else
	  error=$?
	  $run $rm $removelist
	  exit $error
	fi
      fi

      # Create an invalid libtool object if no PIC, so that we do not
      # accidentally link it into a program.
      if test "$build_libtool_libs" != yes; then
	$show "echo timestamp > $libobj"
	$run eval "echo timestamp > \$libobj" || exit $?
      else
	# Move the .lo from within objdir
	$show "$mv $libobj $lo_libobj"
	if $run $mv $libobj $lo_libobj; then :
	else
	  error=$?
	  $run $rm $removelist
	  exit $error
	fi
      fi
    fi

    # Unlock the critical section if it was locked
    if test "$need_locks" != no; then
      $run $rm "$lockfile"
    fi

    exit 0
    ;;

  # libtool link mode
  link | relink)
    modename="$modename: link"
    case $host in
    *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2*)
      # It is impossible to link a dll without this setting, and
      # we shouldn't force the makefile maintainer to figure out
      # which system we are compiling for in order to pass an extra
      # flag for every libtool invokation.
      # allow_undefined=no

      # FIXME: Unfortunately, there are problems with the above when trying
      # to make a dll which has undefined symbols, in which case not
      # even a static library is built.  For now, we need to specify
      # -no-undefined on the libtool link line when we can be certain
      # that all symbols are satisfied, otherwise we get a static library.
      allow_undefined=yes
      ;;
    *)
      allow_undefined=yes
      ;;
    esac
    libtool_args="$nonopt"
    compile_command="$nonopt"
    finalize_command="$nonopt"

    compile_rpath=
    finalize_rpath=
    compile_shlibpath=
    finalize_shlibpath=
    convenience=
    old_convenience=
    deplibs=
    old_deplibs=
    compiler_flags=
    linker_flags=
    dllsearchpath=
    lib_search_path=`pwd`

    avoid_version=no
    dlfiles=
    dlprefiles=
    dlself=no
    export_dynamic=no
    export_symbols=
    export_symbols_regex=
    generated=
    libobjs=
    ltlibs=
    module=no
    no_install=no
    objs=
    prefer_static_libs=no
    preload=no
    prev=
    prevarg=
    release=
    rpath=
    xrpath=
    perm_rpath=
    temp_rpath=
    thread_safe=no
    vinfo=

    # We need to know -static, to get the right output filenames.
    for arg
    do
      case $arg in
      -all-static | -static)
	if test "X$arg" = "X-all-static"; then
	  if test "$build_libtool_libs" = yes && test -z "$link_static_flag"; then
	    $echo "$modename: warning: complete static linking is impossible in this configuration" 1>&2
	  fi
	  if test -n "$link_static_flag"; then
	    dlopen_self=$dlopen_self_static
	  fi
	else
	  if test -z "$pic_flag" && test -n "$link_static_flag"; then
	    dlopen_self=$dlopen_self_static
	  fi
	fi
	build_libtool_libs=no
	build_old_libs=yes
	prefer_static_libs=yes
	break
	;;
      esac
    done

    # See if our shared archives depend on static archives.
    test -n "$old_archive_from_new_cmds" && build_old_libs=yes

    # Go through the arguments, transforming them on the way.
    while test $# -gt 0; do
      arg="$1"
      shift
      case $arg in
      *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \	]*|*]*|"")
	qarg=\"`$echo "X$arg" | $Xsed -e "$sed_quote_subst"`\" ### testsuite: skip nested quoting test
	;;
      *) qarg=$arg ;;
      esac
      libtool_args="$libtool_args $qarg"

      # If the previous option needs an argument, assign it.
      if test -n "$prev"; then
	case $prev in
	output)
	  compile_command="$compile_command @OUTPUT@"
	  finalize_command="$finalize_command @OUTPUT@"
	  ;;
	esac

	case $prev in
	dlfiles|dlprefiles)
	  if test "$preload" = no; then
	    # Add the symbol object into the linking commands.
	    compile_command="$compile_command @SYMFILE@"
	    finalize_command="$finalize_command @SYMFILE@"
	    preload=yes
	  fi
	  case $arg in
	  *.la | *.lo) ;;  # We handle these cases below.
	  force)
	    if test "$dlself" = no; then
	      dlself=needless
	      export_dynamic=yes
	    fi
	    prev=
	    continue
	    ;;
	  self)
	    if test "$prev" = dlprefiles; then
	      dlself=yes
	    elif test "$prev" = dlfiles && test "$dlopen_self" != yes; then
	      dlself=yes
	    else
	      dlself=needless
	      export_dynamic=yes
	    fi
	    prev=
	    continue
	    ;;
	  *)
	    if test "$prev" = dlfiles; then
	      dlfiles="$dlfiles $arg"
	    else
	      dlprefiles="$dlprefiles $arg"
	    fi
	    prev=
	    continue
	    ;;
	  esac
	  ;;
	expsyms)
	  export_symbols="$arg"
	  if test ! -f "$arg"; then
	    $echo "$modename: symbol file \`$arg' does not exist"
	    exit 1
	  fi
	  prev=
	  continue
	  ;;
	expsyms_regex)
	  export_symbols_regex="$arg"
	  prev=
	  continue
	  ;;
	release)
	  release="-$arg"
	  prev=
	  continue
	  ;;
	rpath | xrpath)
	  # We need an absolute path.
	  case $arg in
	  [\\/]* | [A-Za-z]:[\\/]*) ;;
	  *)
	    $echo "$modename: only absolute run-paths are allowed" 1>&2
	    exit 1
	    ;;
	  esac
	  if test "$prev" = rpath; then
	    case "$rpath " in
	    *" $arg "*) ;;
	    *) rpath="$rpath $arg" ;;
	    esac
	  else
	    case "$xrpath " in
	    *" $arg "*) ;;
	    *) xrpath="$xrpath $arg" ;;
	    esac
	  fi
	  prev=
	  continue
	  ;;
	xcompiler)
	  compiler_flags="$compiler_flags $qarg"
	  prev=
	  compile_command="$compile_command $qarg"
	  finalize_command="$finalize_command $qarg"
	  continue
	  ;;
	xlinker)
	  linker_flags="$linker_flags $qarg"
	  compiler_flags="$compiler_flags $wl$qarg"
	  prev=
	  compile_command="$compile_command $wl$qarg"
	  finalize_command="$finalize_command $wl$qarg"
	  continue
	  ;;
	*)
	  eval "$prev=\"\$arg\""
	  prev=
	  continue
	  ;;
	esac
      fi # test -n $prev

      prevarg="$arg"

      case $arg in
      -all-static)
	if test -n "$link_static_flag"; then
	  compile_command="$compile_command $link_static_flag"
	  finalize_command="$finalize_command $link_static_flag"
	fi
	continue
	;;

      -allow-undefined)
	# FIXME: remove this flag sometime in the future.
	$echo "$modename: \`-allow-undefined' is deprecated because it is the default" 1>&2
	continue
	;;

      -avoid-version)
	avoid_version=yes
	continue
	;;

      -dlopen)
	prev=dlfiles
	continue
	;;

      -dlpreopen)
	prev=dlprefiles
	continue
	;;

      -export-dynamic)
	export_dynamic=yes
	continue
	;;

      -export-symbols | -export-symbols-regex)
	if test -n "$export_symbols" || test -n "$export_symbols_regex"; then
	  $echo "$modename: more than one -exported-symbols argument is not allowed"
	  exit 1