ltmain.sh

PPP协议的实现演示

      -l*)
	if test "$arg" = "-lc"; then
	  case "$host" in
	  *-*-cygwin* | *-*-mingw* | *-*-os2* | *-*-beos*)
	    # These systems don't actually have c library (as such)
	    continue
	    ;;
	  esac
	elif test "$arg" = "-lm"; then
	  case "$host" in
	  *-*-cygwin* | *-*-beos*)
	    # These systems don't actually have math library (as such)
	    continue
	    ;;
	  esac
	fi
	deplibs="$deplibs $arg"
	continue
	;;

      -module)
	module=yes
	continue
	;;

      -no-fast-install)
	fast_install=no
	continue
	;;

      -no-install)
	case "$host" in
	*-*-cygwin* | *-*-mingw* | *-*-os2*)
	  # The PATH hackery in wrapper scripts is required on Windows
	  # in order for the loader to find any dlls it needs.
	  $echo "$modename: warning: \`-no-install' is ignored for $host" 1>&2
	  $echo "$modename: warning: assuming \`-no-fast-install' instead" 1>&2
	  fast_install=no
	  ;;
	*)
	  no_install=yes
	  ;;
	esac
	continue
	;;

      -no-undefined)
	allow_undefined=no
	continue
	;;

      -o) prev=output ;;

      -release)
	prev=release
	continue
	;;

      -rpath)
	prev=rpath
	continue
	;;

      -R)
	prev=xrpath
	continue
	;;

      -R*)
	dir=`$echo "X$arg" | $Xsed -e 's/^-R//'`
	# We need an absolute path.
	case "$dir" in
	[\\/]* | [A-Za-z]:[\\/]*) ;;
	*)
	  $echo "$modename: only absolute run-paths are allowed" 1>&2
	  exit 1
	  ;;
	esac
	case "$xrpath " in
	*" $dir "*) ;;
	*) xrpath="$xrpath $dir" ;;
	esac
	continue
	;;

      -static)
	# If we have no pic_flag, then this is the same as -all-static.
	if test -z "$pic_flag" && test -n "$link_static_flag"; then
	  compile_command="$compile_command $link_static_flag"
	  finalize_command="$finalize_command $link_static_flag"
	fi
	continue
	;;

      -thread-safe)
	thread_safe=yes
	continue
	;;

      -version-info)
	prev=vinfo
	continue
	;;

      -Wc,*)
	args=`$echo "X$arg" | $Xsed -e "$sed_quote_subst" -e 's/^-Wc,//'`
	arg=
	IFS="${IFS= 	}"; save_ifs="$IFS"; IFS=','
	for flag in $args; do
	  IFS="$save_ifs"
	  case "$flag" in
	    *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \	]*|*]*|"")
	    flag="\"$flag\""
	    ;;
	  esac
	  arg="$arg $wl$flag"
	  compiler_flags="$compiler_flags $flag"
	done
	IFS="$save_ifs"
	arg=`$echo "X$arg" | $Xsed -e "s/^ //"`
	;;

      -Wl,*)
	args=`$echo "X$arg" | $Xsed -e "$sed_quote_subst" -e 's/^-Wl,//'`
	arg=
	IFS="${IFS= 	}"; save_ifs="$IFS"; IFS=','
	for flag in $args; do
	  IFS="$save_ifs"
	  case "$flag" in
	    *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \	]*|*]*|"")
	    flag="\"$flag\""
	    ;;
	  esac
	  arg="$arg $wl$flag"
	  compiler_flags="$compiler_flags $wl$flag"
	  linker_flags="$linker_flags $flag"
	done
	IFS="$save_ifs"
	arg=`$echo "X$arg" | $Xsed -e "s/^ //"`
	;;

      -Xcompiler)
	prev=xcompiler
	continue
	;;

      -Xlinker)
	prev=xlinker
	continue
	;;

      # Some other compiler flag.
      -* | +*)
	# Unknown arguments in both finalize_command and compile_command need
	# to be aesthetically quoted because they are evaled later.
	arg=`$echo "X$arg" | $Xsed -e "$sed_quote_subst"`
	case "$arg" in
	*[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \	]*|*]*|"")
	  arg="\"$arg\""
	  ;;
	esac
	;;

      *.$objext)
	# A standard object.
	objs="$objs $arg"
	;;

      *.lo)
	# A library object.
	if test "$prev" = dlfiles; then
	  # This file was specified with -dlopen.
	  if test "$build_libtool_libs" = yes && test "$dlopen_support" = yes; then
	    dlfiles="$dlfiles $arg"
	    prev=
	    continue
	  else
	    # If libtool objects are unsupported, then we need to preload.
	    prev=dlprefiles
	  fi
	fi

	if test "$prev" = dlprefiles; then
	  # Preload the old-style object.
	  dlprefiles="$dlprefiles "`$echo "X$arg" | $Xsed -e "$lo2o"`
	  prev=
	else
	  libobjs="$libobjs $arg"
	fi
	;;

      *.$libext)
	# An archive.
	deplibs="$deplibs $arg"
	old_deplibs="$old_deplibs $arg"
	continue
	;;

      *.la)
	# A libtool-controlled library.

	if test "$prev" = dlfiles; then
	  # This library was specified with -dlopen.
	  dlfiles="$dlfiles $arg"
	  prev=
	elif test "$prev" = dlprefiles; then
	  # The library was specified with -dlpreopen.
	  dlprefiles="$dlprefiles $arg"
	  prev=
	else
	  deplibs="$deplibs $arg"
	fi
	continue
	;;

      # Some other compiler argument.
      *)
	# Unknown arguments in both finalize_command and compile_command need
	# to be aesthetically quoted because they are evaled later.
	arg=`$echo "X$arg" | $Xsed -e "$sed_quote_subst"`
	case "$arg" in
	*[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \	]*|*]*|"")
	  arg="\"$arg\""
	  ;;
	esac
	;;
      esac

      # Now actually substitute the argument into the commands.
      if test -n "$arg"; then
	compile_command="$compile_command $arg"
	finalize_command="$finalize_command $arg"
      fi
    done

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

    if test "$export_dynamic" = yes && test -n "$export_dynamic_flag_spec"; then
      eval arg=\"$export_dynamic_flag_spec\"
      compile_command="$compile_command $arg"
      finalize_command="$finalize_command $arg"
    fi

    oldlibs=
    # calculate the name of the file, without its directory
    outputname=`$echo "X$output" | $Xsed -e 's%^.*/%%'`
    libobjs_save="$libobjs"

    if test -n "$shlibpath_var"; then
      # get the directories listed in $shlibpath_var
      eval shlib_search_path=\`\$echo \"X \${$shlibpath_var}\" \| \$Xsed -e \'s/:/ /g\'\`
    else
      shlib_search_path=
    fi
    eval sys_lib_search_path=\"$sys_lib_search_path_spec\"
    eval sys_lib_dlsearch_path=\"$sys_lib_dlsearch_path_spec\"
    lib_search_path="$lib_search_path $sys_lib_search_path $shlib_search_path"

    output_objdir=`$echo "X$output" | $Xsed -e 's%/[^/]*$%%'`
    if test "X$output_objdir" = "X$output"; then
      output_objdir="$objdir"
    else
      output_objdir="$output_objdir/$objdir"
    fi
    # Create the object directory.
    if test ! -d $output_objdir; then
      $show "$mkdir $output_objdir"
      $run $mkdir $output_objdir
      status=$?
      if test $status -ne 0 && test ! -d $output_objdir; then
	exit $status
      fi
    fi

    case "$output" in
    "")
      $echo "$modename: you must specify an output file" 1>&2
      $echo "$help" 1>&2
      exit 1
      ;;
    *.$libext)
      linkmode=oldlib ;;
    *.lo | *.$objext)
      linkmode=obj ;;
    *.la)
      linkmode=lib ;;
    *) # Anything else should be a program.
      linkmode=prog ;;
    esac

    specialdeplibs=
    libs=
    # Find all interdependent deplibs that
    # are linked more than once (e.g. -la -lb -la)
    for deplib in $deplibs; do
      case "$libs " in
      *" $deplib "*) specialdeplibs="$specialdeplibs $deplib" ;;
      esac
      libs="$libs $deplib"
    done
    deplibs=
    newdependency_libs=
    uninst_path= # paths that contain uninstalled libtool libraries
    new_lib_search_path=
    need_relink=no # whether we're linking any uninstalled libtool libraries
    case $linkmode in
    lib)
	passes="link"
	for file in $dlfiles $dlprefiles; do
	  case "$file" in
	  *.la) ;;
	  *)
	    $echo "$modename: libraries can \`-dlopen' only libtool libraries" 1>&2
	    exit 1
	    ;;
	  esac
	done
	;;
    prog)
	compile_deplibs=
	finalize_deplibs=
	alldeplibs=no
	newdlfiles=
	newdlprefiles=
	link_against_libtool_libs=
	passes="scan dlopen dlpreopen link"
	;;
    *)	passes="link"
	;;
    esac
    for pass in $passes; do
      if test $linkmode = prog; then
	case $pass in
	dlopen) libs="$dlfiles" ;;
	dlpreopen) libs="$dlprefiles" ;;
	link) libs="$deplibs %DEPLIBS% $dependency_libs" ;;
	esac
      fi
      if test $pass = dlopen; then
	# Collect dlpreopened libraries
	save_deplibs="$deplibs"
	deplibs=
      fi
      for deplib in $libs; do
	lib=
	found=no
	case "$deplib" in
	-l*)
	  if test $linkmode != lib && test $linkmode != prog; then
	    $echo "$modename: warning: \`-l' is ignored for archives/objects" 1>&2
	    continue
	  fi
	  name=`$echo "X$deplib" | $Xsed -e 's/^-l//'`
	  for searchdir in $lib_search_path; do
	    # Search the libtool library
	    lib="$searchdir/lib${name}.la"
	    if test -f "$lib"; then
	      found=yes
	      break
	    fi
	  done
	  if test "$found" != yes; then
	    if test "$linkmode,$pass" = "prog,link"; then
	      compile_deplibs="$deplib $compile_deplibs"
	      finalize_deplibs="$deplib $finalize_deplibs"
	    else
	      deplibs="$deplib $deplibs"
	      test $linkmode = lib && newdependency_libs="$deplib $newdependency_libs"
	    fi
	    continue
	  fi
	  ;;
	-L*)
	  case $linkmode in
	  lib)
	    deplibs="$deplib $deplibs"
	    newdependency_libs="$deplib $newdependency_libs"
	    new_lib_search_path="$new_lib_search_path "`$echo "X$deplib" | $Xsed -e 's/^-L//'`
	    ;;
	  prog)
	    if test $pass = scan; then
	      deplibs="$deplib $deplibs"
	      new_lib_search_path="$new_lib_search_path "`$echo "X$deplib" | $Xsed -e 's/^-L//'`
	    else
	      compile_deplibs="$deplib $compile_deplibs"
	      finalize_deplibs="$deplib $finalize_deplibs"
	    fi
	    ;;
	  *)
	    $echo "$modename: warning: \`-L' is ignored for archives/objects" 1>&2
	    ;;
	  esac
	  continue
	  ;;
	-R*)
	  if test "$linkmode,$pass" = "prog,link"; then
	    dir=`$echo "X$deplib" | $Xsed -e 's/^-R//'`
	    # Make sure the xrpath contains only unique directories.
	    case "$xrpath " in
	    *" $dir "*) ;;
	    *) xrpath="$xrpath $dir" ;;
	    esac
	  fi
	  continue
	  ;;
	*.la) lib="$deplib" ;;
	*.$libext)
	  case $linkmode in
	  lib)
	    if test "$deplibs_check_method" != pass_all; then
	      echo
	      echo "*** Warning: This library needs some functionality provided by $deplib."
	      echo "*** I have the capability to make that library automatically link in when"
	      echo "*** you link to this library.  But I can only do this if you have a"
	      echo "*** shared version of the library, which you do not appear to have."
	    else
	      echo
	      echo "*** Warning: Linking the shared library $output against the"
	      echo "*** static library $deplib is not portable!"
	      deplibs="$deplib $deplibs"
	    fi
	    continue
	    ;;
	  prog)
	    if test $pass != link; then
	      deplibs="$deplib $deplibs"
	    else
	      compile_deplibs="$deplib $compile_deplibs"
	      finalize_deplibs="$deplib $finalize_deplibs"
	    fi
	    continue
	    ;;
	  esac
	  ;;
	*.lo | *.$objext)
	  if test $linkmode = prog; then
	    if test $pass = dlpreopen || test "$dlopen_support" != yes || test "$build_libtool_libs" = no; then
	      # If there is no dlopen support or we're linking statically,
	      # we need to preload.
	      newdlprefiles="$newdlprefiles $deplib"
	      compile_deplibs="$deplib $compile_deplibs"
	      finalize_deplibs="$deplib $finalize_deplibs"
	    else
	      newdlfiles="$newdlfiles $deplib"
	    fi
	  fi
	  continue
	  ;;
	%DEPLIBS%)
	  alldeplibs=yes
	  continue
	  ;;
	esac
	if test $found = yes || test -f "$lib"; then :
	else
	  $echo "$modename: cannot find the library \`$lib'" 1>&2
	  exit 1
	fi

	# Check to see that this really is a libtool archive.
	if (sed -e '2q' $lib | egrep "^# Generated by .*$PACKAGE") >/dev/null 2>&1; then :
	else
	  $echo "$modename: \`$lib' is not a valid libtool archive" 1>&2
	  exit 1
	fi

	ladir=`$echo "X$lib" | $Xsed -e 's%/[^/]*$%%'`
	test "X$ladir" = "X$lib" && ladir="."

	dlname=
	dlopen=
	dlpreopen=
	libdir=
	library_names=
	old_library=
	# If the library was installed with an old release of libtool,
	# it will not redefine variable installed.
	installed=yes

	# Read the .la file
	case "$lib" in
	*/* | *\\*) . $lib ;;
	*) . ./$lib ;;
	esac

	if test $linkmode = lib || test "$linkmode,$pass" = "prog,scan"; then
	  test -n "$dlopen" && dlfiles="$dlfiles $dlopen"
	  test -n "$dlpreopen" && dlprefiles="$dlprefiles $dlpreopen"
	fi

	if test $linkmode != lib && test $linkmode != prog; then
	  # only check for convenience libraries
	  if test -z "$old_library"; then