ltmain.sh.svn-base

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# True iff FILE is a libtool `.la' library or `.lo' object file.
# This function is only a basic sanity check; it will hardly flush out
# determined imposters.
func_lalib_p ()
{
    $SED -e 4q "$1" 2>/dev/null \
      | $GREP "^# Generated by .*$PACKAGE" > /dev/null 2>&1
}

# func_lalib_unsafe_p file
# True iff FILE is a libtool `.la' library or `.lo' object file.
# This function implements the same check as func_lalib_p without
# resorting to external programs.  To this end, it redirects stdin and
# closes it afterwards, without saving the original file descriptor.
# As a safety measure, use it only where a negative result would be
# fatal anyway.  Works if `file' does not exist.
func_lalib_unsafe_p ()
{
    lalib_p=no
    if test -r "$1" && exec 5<&0 <"$1"; then
	for lalib_p_l in 1 2 3 4
	do
	    read lalib_p_line
	    case "$lalib_p_line" in
		\#\ Generated\ by\ *$PACKAGE* ) lalib_p=yes; break;;
	    esac
	done
	exec 0<&5 5<&-
    fi
    test "$lalib_p" = yes
}

# func_ltwrapper_script_p file
# True iff FILE is a libtool wrapper script
# This function is only a basic sanity check; it will hardly flush out
# determined imposters.
func_ltwrapper_script_p ()
{
    func_lalib_p "$1"
}

# func_ltwrapper_executable_p file
# True iff FILE is a libtool wrapper executable
# This function is only a basic sanity check; it will hardly flush out
# determined imposters.
func_ltwrapper_executable_p ()
{
    func_ltwrapper_exec_suffix=
    case $1 in
    *.exe) ;;
    *) func_ltwrapper_exec_suffix=.exe ;;
    esac
    $GREP "$magic_exe" "$1$func_ltwrapper_exec_suffix" >/dev/null 2>&1
}

# func_ltwrapper_scriptname file
# Assumes file is an ltwrapper_executable
# uses $file to determine the appropriate filename for a
# temporary ltwrapper_script.
func_ltwrapper_scriptname ()
{
    func_ltwrapper_scriptname_result=""
    if func_ltwrapper_executable_p "$1"; then
	func_dirname_and_basename "$1" "" "."
	func_stripname '' '.exe' "$func_basename_result"
	func_ltwrapper_scriptname_result="$func_dirname_result/$objdir/${func_stripname_result}_ltshwrapper"
    fi
}

# func_ltwrapper_p file
# True iff FILE is a libtool wrapper script or wrapper executable
# This function is only a basic sanity check; it will hardly flush out
# determined imposters.
func_ltwrapper_p ()
{
    func_ltwrapper_script_p "$1" || func_ltwrapper_executable_p "$1"
}


# func_execute_cmds commands fail_cmd
# Execute tilde-delimited COMMANDS.
# If FAIL_CMD is given, eval that upon failure.
# FAIL_CMD may read-access the current command in variable CMD!
func_execute_cmds ()
{
    $opt_debug
    save_ifs=$IFS; IFS='~'
    for cmd in $1; do
      IFS=$save_ifs
      eval cmd=\"$cmd\"
      func_show_eval "$cmd" "${2-:}"
    done
    IFS=$save_ifs
}


# func_source file
# Source FILE, adding directory component if necessary.
# Note that it is not necessary on cygwin/mingw to append a dot to
# FILE even if both FILE and FILE.exe exist: automatic-append-.exe
# behavior happens only for exec(3), not for open(2)!  Also, sourcing
# `FILE.' does not work on cygwin managed mounts.
func_source ()
{
    $opt_debug
    case $1 in
    */* | *\\*)	. "$1" ;;
    *)		. "./$1" ;;
    esac
}


# func_infer_tag arg
# Infer tagged configuration to use if any are available and
# if one wasn't chosen via the "--tag" command line option.
# Only attempt this if the compiler in the base compile
# command doesn't match the default compiler.
# arg is usually of the form 'gcc ...'
func_infer_tag ()
{
    $opt_debug
    if test -n "$available_tags" && test -z "$tagname"; then
      CC_quoted=
      for arg in $CC; do
        func_quote_for_eval "$arg"
	CC_quoted="$CC_quoted $func_quote_for_eval_result"
      done
      case $@ in
      # Blanks in the command may have been stripped by the calling shell,
      # but not from the CC environment variable when configure was run.
      " $CC "* | "$CC "* | " `$ECHO $CC` "* | "`$ECHO $CC` "* | " $CC_quoted"* | "$CC_quoted "* | " `$ECHO $CC_quoted` "* | "`$ECHO $CC_quoted` "*) ;;
      # Blanks at the start of $base_compile will cause this to fail
      # if we don't check for them as well.
      *)
	for z in $available_tags; do
	  if $GREP "^# ### BEGIN LIBTOOL TAG CONFIG: $z$" < "$progpath" > /dev/null; then
	    # Evaluate the configuration.
	    eval "`${SED} -n -e '/^# ### BEGIN LIBTOOL TAG CONFIG: '$z'$/,/^# ### END LIBTOOL TAG CONFIG: '$z'$/p' < $progpath`"
	    CC_quoted=
	    for arg in $CC; do
	      # Double-quote args containing other shell metacharacters.
	      func_quote_for_eval "$arg"
	      CC_quoted="$CC_quoted $func_quote_for_eval_result"
	    done
	    case "$@ " in
	      " $CC "* | "$CC "* | " `$ECHO $CC` "* | "`$ECHO $CC` "* | " $CC_quoted"* | "$CC_quoted "* | " `$ECHO $CC_quoted` "* | "`$ECHO $CC_quoted` "*)
	      # The compiler in the base compile command matches
	      # the one in the tagged configuration.
	      # Assume this is the tagged configuration we want.
	      tagname=$z
	      break
	      ;;
	    esac
	  fi
	done
	# If $tagname still isn't set, then no tagged configuration
	# was found and let the user know that the "--tag" command
	# line option must be used.
	if test -z "$tagname"; then
	  func_echo "unable to infer tagged configuration"
	  func_fatal_error "specify a tag with \`--tag'"
#	else
#	  func_verbose "using $tagname tagged configuration"
	fi
	;;
      esac
    fi
}



# func_write_libtool_object output_name pic_name nonpic_name
# Create a libtool object file (analogous to a ".la" file),
# but don't create it if we're doing a dry run.
func_write_libtool_object ()
{
    write_libobj=${1}
    if test "$build_libtool_libs" = yes; then
      write_lobj=\'${2}\'
    else
      write_lobj=none
    fi

    if test "$build_old_libs" = yes; then
      write_oldobj=\'${3}\'
    else
      write_oldobj=none
    fi

    $opt_dry_run || {
      cat >${write_libobj}T <<EOF
# $write_libobj - a libtool object file
# Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION
#
# Please DO NOT delete this file!
# It is necessary for linking the library.

# Name of the PIC object.
pic_object=$write_lobj

# Name of the non-PIC object
non_pic_object=$write_oldobj

EOF
      $MV "${write_libobj}T" "${write_libobj}"
    }
}

# func_mode_compile arg...
func_mode_compile ()
{
    $opt_debug
    # Get the compilation command and the source file.
    base_compile=
    srcfile="$nonopt"  #  always keep a non-empty value in "srcfile"
    suppress_opt=yes
    suppress_output=
    arg_mode=normal
    libobj=
    later=
    pie_flag=

    for arg
    do
      case $arg_mode in
      arg  )
	# do not "continue".  Instead, add this to base_compile
	lastarg="$arg"
	arg_mode=normal
	;;

      target )
	libobj="$arg"
	arg_mode=normal
	continue
	;;

      normal )
	# Accept any command-line options.
	case $arg in
	-o)
	  test -n "$libobj" && \
	    func_fatal_error "you cannot specify \`-o' more than once"
	  arg_mode=target
	  continue
	  ;;

	-pie | -fpie | -fPIE)
          pie_flag="$pie_flag $arg"
	  continue
	  ;;

	-shared | -static | -prefer-pic | -prefer-non-pic)
	  later="$later $arg"
	  continue
	  ;;

	-no-suppress)
	  suppress_opt=no
	  continue
	  ;;

	-Xcompiler)
	  arg_mode=arg  #  the next one goes into the "base_compile" arg list
	  continue      #  The current "srcfile" will either be retained or
	  ;;            #  replaced later.  I would guess that would be a bug.

	-Wc,*)
	  func_stripname '-Wc,' '' "$arg"
	  args=$func_stripname_result
	  lastarg=
	  save_ifs="$IFS"; IFS=','
	  for arg in $args; do
	    IFS="$save_ifs"
	    func_quote_for_eval "$arg"
	    lastarg="$lastarg $func_quote_for_eval_result"
	  done
	  IFS="$save_ifs"
	  func_stripname ' ' '' "$lastarg"
	  lastarg=$func_stripname_result

	  # Add the arguments to base_compile.
	  base_compile="$base_compile $lastarg"
	  continue
	  ;;

	*)
	  # Accept the current argument as the source file.
	  # The previous "srcfile" becomes the current argument.
	  #
	  lastarg="$srcfile"
	  srcfile="$arg"
	  ;;
	esac  #  case $arg
	;;
      esac    #  case $arg_mode

      # Aesthetically quote the previous argument.
      func_quote_for_eval "$lastarg"
      base_compile="$base_compile $func_quote_for_eval_result"
    done # for arg

    case $arg_mode in
    arg)
      func_fatal_error "you must specify an argument for -Xcompile"
      ;;
    target)
      func_fatal_error "you must specify a target with \`-o'"
      ;;
    *)
      # Get the name of the library object.
      test -z "$libobj" && {
	func_basename "$srcfile"
	libobj="$func_basename_result"
      }
      ;;
    esac

    # Recognize several different file suffixes.
    # If the user specifies -o file.o, it is replaced with file.lo
    case $libobj in
    *.[cCFSifmso] | \
    *.ada | *.adb | *.ads | *.asm | \
    *.c++ | *.cc | *.ii | *.class | *.cpp | *.cxx | \
    *.[fF][09]? | *.for | *.java | *.obj | *.sx)
      func_xform "$libobj"
      libobj=$func_xform_result
      ;;
    esac

    case $libobj in
    *.lo) func_lo2o "$libobj"; obj=$func_lo2o_result ;;
    *)
      func_fatal_error "cannot determine name of library object from \`$libobj'"
      ;;
    esac

    func_infer_tag $base_compile

    for arg in $later; do
      case $arg in
      -shared)
	test "$build_libtool_libs" != yes && \
	  func_fatal_configuration "can not build a shared library"
	build_old_libs=no
	continue
	;;

      -static)
	build_libtool_libs=no
	build_old_libs=yes
	continue
	;;

      -prefer-pic)
	pic_mode=yes
	continue
	;;

      -prefer-non-pic)
	pic_mode=no
	continue
	;;
      esac
    done

    func_quote_for_eval "$libobj"
    test "X$libobj" != "X$func_quote_for_eval_result" \
      && $ECHO "X$libobj" | $GREP '[]~#^*{};<>?"'"'"'	 &()|`$[]' \
      && func_warning "libobj name \`$libobj' may not contain shell special characters."
    func_dirname_and_basename "$obj" "/" ""
    objname="$func_basename_result"
    xdir="$func_dirname_result"
    lobj=${xdir}$objdir/$objname

    test -z "$base_compile" && \
      func_fatal_help "you must specify a compilation command"

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

    # On Cygwin there's no "real" PIC flag so we must build both object types
    case $host_os in
    cygwin* | mingw* | pw32* | os2*)
      pic_mode=default
      ;;
    esac
    if test "$pic_mode" = no && test "$deplibs_check_method" != pass_all; then
      # non-PIC code in shared libraries is not supported
      pic_mode=default
    fi

    # 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"
    else
      output_obj=
      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 $opt_dry_run || ln "$progpath" "$lockfile" 2>/dev/null; do
	func_echo "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."

	$opt_dry_run || $RM $removelist
	exit $EXIT_FAILURE
      fi
      removelist="$removelist $output_obj"
      $ECHO "$srcfile" > "$lockfile"
    fi

    $opt_dry_run || $RM $removelist
    removelist="$removelist $lockfile"
    trap '$opt_dry_run || $RM $removelist; exit $EXIT_FAILURE' 1 2 15

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

    # Only build a PIC object if we are building libtool libraries.