ltmain.sh

这是一款VC++编写的软件

# ltmain.sh - Provide generalized library-building support services.
# NOTE: Changing this file will not affect anything until you rerun ltconfig.
#
# Copyright (C) 1996-1998 Free Software Foundation, Inc.
# Gordon Matzigkeit <[e-mail]>, 1996
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.

# Check that we have a working $echo.
if test "X$1" = X--no-reexec; then
  # Discard the --no-reexec flag, and continue.
  shift
elif test "X$1" = X--fallback-echo; then
  # used as fallback echo
  shift
  cat <<EOF
$*
EOF
  exit 0
elif test "X`($echo '\t') 2>/dev/null`" = 'X\t'; then
  # Yippee, $echo works!
  :
else
  # Restart under the correct shell, and then maybe $echo will work.
  exec $SHELL "$0" --no-reexec ${1+"$@"}
fi

# The name of this program.
progname=`$echo "$0" | sed 's%^.*/%%'`
modename="$progname"

# Constants.
PROGRAM=ltmain.sh
PACKAGE=libtool
VERSION=1.2d

default_mode=
help="Try \`$progname --help' for more information."
magic="%%%MAGIC variable%%%"
mkdir="mkdir"
mv="mv -f"
rm="rm -f"

# Sed substitution that helps us do robust quoting.  It backslashifies
# metacharacters that are still active within double-quoted strings.
Xsed='sed -e s/^X//'
sed_quote_subst='s/\([\\`\\"$\\\\]\)/\\\1/g'

# NLS nuisances.
# Only set LANG and LC_ALL to C if already set.
# These must not be set unconditionally because not all systems understand
# e.g. LANG=C (notably SCO).
# We save the old values to restore during execute mode.
if test "${LC_ALL+set}" = set; then
  save_LC_ALL="$LC_ALL"; LC_ALL=C; export LC_ALL
fi
if test "${LANG+set}" = set; then
  save_LANG="$LANG"; LANG=C; export LANG
fi

if test "$LTCONFIG_VERSION" != "$VERSION"; then
  echo "$modename: ltconfig version \`$LTCONFIG_VERSION' does not match $PROGRAM version \`$VERSION'" 1>&2
  echo "Fatal configuration error.  See the $PACKAGE docs for more information." 1>&2
  exit 1
fi

if test "$build_libtool_libs" != yes && test "$build_old_libs" != yes; then
  echo "$modename: not configured to build any kind of library" 1>&2
  echo "Fatal configuration error.  See the $PACKAGE docs for more information." 1>&2
  exit 1
fi

# Global variables.
mode=$default_mode
nonopt=
prev=
prevopt=
run=
show="$echo"
show_help=
execute_dlfiles=
lo2o="s/\\.lo\$/.${objext}/"
los2o="s/\\.lo /.${objext} /g"

# Parse our command line options once, thoroughly.
while test $# -gt 0
do
  arg="$1"
  shift

  case "$arg" in
  -*=*) optarg=`$echo "X$arg" | $Xsed -e 's/[-_a-zA-Z0-9]*=//'` ;;
  *) optarg= ;;
  esac

  # If the previous option needs an argument, assign it.
  if test -n "$prev"; then
    case "$prev" in
    execute_dlfiles)
      eval "$prev=\"\$$prev \$arg\""
      ;;
    *)
      eval "$prev=\$arg"
      ;;
    esac

    prev=
    prevopt=
    continue
  fi

  # Have we seen a non-optional argument yet?
  case "$arg" in
  --help)
    show_help=yes
    ;;

  --version)
    echo "$PROGRAM (GNU $PACKAGE) $VERSION"
    exit 0
    ;;

  --config)
    sed -e '1,/^### BEGIN LIBTOOL CONFIG/d' -e '/^### END LIBTOOL CONFIG/,$d' $0
    exit 0
    ;;

  --debug)
    echo "$progname: enabling shell trace mode"
    set -x
    ;;

  --dry-run | -n)
    run=:
    ;;

  --features)
    echo "host: $host"
    if test "$build_libtool_libs" = yes; then
      echo "enable shared libraries"
    else
      echo "disable shared libraries"
    fi
    if test "$build_old_libs" = yes; then
      echo "enable static libraries"
    else
      echo "disable static libraries"
    fi
    exit 0
    ;;

  --finish) mode="finish" ;;

  --mode) prevopt="--mode" prev=mode ;;
  --mode=*) mode="$optarg" ;;

  --quiet | --silent)
    show=:
    ;;

  -dlopen)
    prevopt="-dlopen"
    prev=execute_dlfiles
    ;;

  -*)
    $echo "$modename: unrecognized option \`$arg'" 1>&2
    $echo "$help" 1>&2
    exit 1
    ;;

  *)
    nonopt="$arg"
    break
    ;;
  esac
done

if test -n "$prevopt"; then
  $echo "$modename: option \`$prevopt' requires an argument" 1>&2
  $echo "$help" 1>&2
  exit 1
fi

if test -z "$show_help"; then

  # Infer the operation mode.
  if test -z "$mode"; then
    case "$nonopt" in
    *cc | *++ | gcc* | *-gcc*)
      mode=link
      for arg
      do
        case "$arg" in
        -c)
           mode=compile
           break
           ;;
        esac
      done
      ;;
    *db | *dbx | *strace | *truss)
      mode=execute
      ;;
    *install*|cp|mv)
      mode=install
      ;;
    *rm)
      mode=uninstall
      ;;
    *)
      # If we have no mode, but dlfiles were specified, then do execute mode.
      test -n "$execute_dlfiles" && mode=execute

      # Just use the default operation mode.
      if test -z "$mode"; then
        if test -n "$nonopt"; then
          $echo "$modename: warning: cannot infer operation mode from \`$nonopt'" 1>&2
        else
          $echo "$modename: warning: cannot infer operation mode without MODE-ARGS" 1>&2
        fi
      fi
      ;;
    esac
  fi

  # Only execute mode is allowed to have -dlopen flags.
  if test -n "$execute_dlfiles" && test "$mode" != execute; then
    $echo "$modename: unrecognized option \`-dlopen'" 1>&2
    $echo "$help" 1>&2
    exit 1
  fi

  # Change the help message to a mode-specific one.
  generic_help="$help"
  help="Try \`$modename --help --mode=$mode' for more information."

  # These modes are in order of execution frequency so that they run quickly.
  case "$mode" in
  # libtool compile mode
  compile)
    modename="$modename: compile"
    # Get the compilation command and the source file.
    base_compile=
    lastarg=
    srcfile="$nonopt"
    suppress_output=
    force_static=no

    user_target=no
    for arg
    do
      # Accept any command-line options.
      case "$arg" in
      -o)
        if test "$user_target" != "no"; then
          $echo "$modename: you cannot specify \`-o' more than once" 1>&2
	  exit 1
        fi
        user_target=next
	;;

      -force-static)
        force_static=yes
        continue
        ;;
	
      -static)
        build_old_libs=yes
        continue
        ;;
      esac

      case "$user_target" in
      next)
        # The next one is the -o target name
        user_target=yes
        continue
        ;;
      yes)
        # We got the output file
        user_target=set
        libobj="$arg"
        continue
        ;;
      esac

      # Accept the current argument as the source file.
      lastarg="$srcfile"
      srcfile="$arg"

      # Aesthetically quote the previous argument.

      # Backslashify any backslashes, double quotes, and dollar signs.
      # These are the only characters that are still specially
      # interpreted inside of double-quoted scrings.
      lastarg=`$echo "X$lastarg" | $Xsed -e "$sed_quote_subst"`

      # Double-quote args containing other shell metacharacters.
      # Many Bourne shells cannot handle close brackets correctly in scan
      # sets, so we specify it separately.
      case "$lastarg" in
      *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \	]*|*]*)
        lastarg="\"$lastarg\""
        ;;
      esac

      # Add the previous argument to base_compile.
      if test -z "$base_compile"; then
        base_compile="$lastarg"
      else
        base_compile="$base_compile $lastarg"
      fi
    done

    case "$user_target" in
    set)
      ;;
    no)
      # Get the name of the library object.
      libobj=`$echo "X$srcfile" | $Xsed -e 's%^.*/%%'`
      ;;
    *)
      $echo "$modename: you must specify a target with \`-o'" 1>&2
      exit 1
      ;;
    esac

    # Recognize several different file suffixes.
    # If the user specifies -o file.o, it is replaced with file.lo
    xform='[cCFSfmso]'
    case "$libobj" in
    *.ada) xform=ada ;;
    *.adb) xform=adb ;;
    *.ads) xform=ads ;;
    *.asm) xform=asm ;;
    *.c++) xform=c++ ;;
    *.cc) xform=cc ;;
    *.cpp) xform=cpp ;;
    *.cxx) xform=cxx ;;
    *.f90) xform=f90 ;;
    *.for) xform=for ;;
    esac

    libobj=`$echo "X$libobj" | $Xsed -e "s/\.$xform$/.lo/"`

    case "$libobj" in
    *.lo) obj=`$echo "X$libobj" | $Xsed -e "$lo2o"` ;;
    *)
      $echo "$modename: cannot determine name of library object from \`$libobj'" 1>&2
      exit 1
      ;;
    esac

    if test -z "$base_compile"; then
      $echo "$modename: you must specify a compilation command" 1>&2
      $echo "$help" 1>&2
      exit 1
    fi

    # Delete any leftover library objects.
    if test "$build_old_libs" = yes; then
      removelist="$obj $libobj $lockfile"
    else
      removelist="$libobj $lockfile"
    fi

    $run $rm $removelist
    trap "$run $rm $removelist; exit 1" 1 2 15

    # Calculate the filename of the output object if compiler does
    # not support -o with -c
    if test "$compiler_c_o" = no; then
      output_obj=`$echo "X$srcfile" | $Xsed -e 's%^.*/%%' -e 's%\..*$%%'`.${objext}
      lockfile="$output_obj.lock"
      removelist="$removelist $output_obj $lockfile"
      trap "$run $rm $removelist; exit 1" 1 2 15
    else
      need_locks=no
      lockfile=
    fi

    # 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 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