stdio.cdl

ecos实时嵌入式操作系统

# ====================================================================
#
#      stdio.cdl
#
#      C library stdio related configuration data
#
# ====================================================================
#####ECOSGPLCOPYRIGHTBEGIN####
## -------------------------------------------
## This file is part of eCos, the Embedded Configurable Operating System.
## Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
##
## eCos 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 or (at your option) any later version.
##
## eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,
## 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
##
## As a special exception, if other files instantiate templates or use macros
## or inline functions from this file, or you compile this file and link it
## with other works to produce a work based on this file, this file does not
## by itself cause the resulting work to be covered by the GNU General Public
## License. However the source code for this file must still be made available
## in accordance with section (3) of the GNU General Public License.
##
## This exception does not invalidate any other reasons why a work based on
## this file might be covered by the GNU General Public License.
##
## Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
## at http://sources.redhat.com/ecos/ecos-license/
## -------------------------------------------
#####ECOSGPLCOPYRIGHTEND####
# ====================================================================
######DESCRIPTIONBEGIN####
#
# Author(s):      jlarmour
# Contributors:
# Date:           2000-04-14
#
#####DESCRIPTIONEND####
#
# ====================================================================

cdl_package CYGPKG_LIBC_STDIO {
    display       "ISO C library standard input/output functions"
    description   "
        This package provides standard input/output functions associated
        with the header file <stdio.h> as specified by the
        ISO C standard - ISO/IEC 9899:1990."
    doc           ref/libc.html
    include_dir   cyg/libc/stdio
    parent        CYGPKG_LIBC
    requires      CYGPKG_IO
    requires      CYGPKG_IO_SERIAL_HALDIAG
    requires      CYGPKG_LIBC_I18N
    implements    CYGINT_ISO_STDIO_FILETYPES
    implements    CYGINT_ISO_STDIO_FILEACCESS
    implements    CYGINT_ISO_STDIO_FORMATTED_IO
    implements    CYGINT_ISO_STDIO_CHAR_IO
    implements    CYGINT_ISO_STDIO_DIRECT_IO
    implements    CYGINT_ISO_STDIO_ERROR
    implements    CYGINT_ISO_STDIO_STREAMS
    requires      { CYGBLD_ISO_STDIO_FILETYPES_HEADER == \
                    "<cyg/libc/stdio/stdio.h>" }
    requires      { CYGBLD_ISO_STDIO_FILEACCESS_HEADER == \
                    "<cyg/libc/stdio/stdio.h>" }
    requires      { CYGBLD_ISO_STDIO_FORMATTED_IO_HEADER == \
                    "<cyg/libc/stdio/stdio.h>" }
    requires      { CYGBLD_ISO_STDIO_CHAR_IO_HEADER == \
                    "<cyg/libc/stdio/stdio.h>" }
    requires      { CYGBLD_ISO_STDIO_DIRECT_IO_HEADER == \
                    "<cyg/libc/stdio/stdio.h>" }
    requires      { CYGBLD_ISO_STDIO_ERROR_HEADER == \
                    "<cyg/libc/stdio/stdio.h>" }
    requires      { CYGBLD_ISO_STDIO_STREAMS_HEADER == \
                    "<cyg/libc/stdio/stdio.h>" }
    requires      CYGPKG_ISOINFRA
    requires      CYGINT_ISO_ERRNO_CODES
    requires      CYGINT_ISO_ERRNO
    requires      CYGINT_ISO_STRERROR
    requires      CYGINT_ISO_STRING_STRFUNCS
    requires      CYGINT_ISO_STRING_MEMFUNCS
    # The following is for scanf only. We could express this better,
    # particularly since scanf is also dependent on the optional ungetc.
    requires      CYGINT_ISO_STDLIB_STRCONV

    compile       common/fclose.cxx       common/feof.cxx        \
                  common/fflush.cxx       common/fopen.cxx       \
                  common/freopen.cxx      common/setvbuf.cxx     \
                  common/snprintf.cxx     common/sprintf.cxx     \
                  common/sscanf.cxx       common/stderr.cxx      \
                  common/stdin.cxx        common/stdiofiles.cxx  \
                  common/fseek.cxx        common/stdioinlines.cxx\
                  common/stdiosupp.cxx    common/stdout.cxx      \
                  common/stream.cxx       common/streambuf.cxx   \
                  common/ungetc.cxx       common/vsnprintf.cxx   \
                  common/vsscanf.cxx                             \
                                                                 \
                  input/fgetc.cxx         input/fgets.cxx        \
                  input/fread.cxx         input/fscanf.cxx       \
                  input/gets.cxx          input/scanf.cxx        \
                  input/vfscanf.cxx                              \
                                                                 \
                  output/fnprintf.cxx     output/fprintf.cxx     \
                  output/fputc.cxx        output/fputs.cxx       \
                  output/fwrite.cxx       output/printf.cxx      \
                  output/vfnprintf.cxx

# ====================================================================

    cdl_option CYGIMP_LIBC_STDIO_INLINES {
        display       "Inline versions of <stdio.h> functions"
        default_value 1
        description   "
            This option chooses whether some of the
            particularly simple functions from
            <stdio.h> are available as inline
            functions. This may improve performance, and as
            the functions are small, may even improve code
            size."
    }
    
    cdl_option FOPEN_MAX {
        display       "Permitted number of open files"
        flavor        data
        legal_values  3 to 0x7fffffff
        default_value 8
        description   "
            This option controls the guaranteed minimum
            number of simultaneously open files. The ISO
            C standard requires it to be defined (para
            7.9.1), and if strictly compliant, it must be
            at least 8 (para 7.9.3). In practice it can be
            as low as 3 - for stdin, stdout and stderr."
    }
    
    cdl_option FILENAME_MAX {
        display       "Maximum length of filename"
        flavor        data
        legal_values  1 to 0x7fffffff
        default_value 16
        description   "
            This option defines the maximum allowed size of
            a filename in characters. The ISO C standard
            requires it to be defined (para 7.9.1)."
    }
    
    cdl_option L_tmpnam {
        display       "Maximum length of filenames for temporary files"
        flavor        data
        legal_values  1 to 0x7fffffff
        default_value 16
        description   "
            This option defines the maximum allowed size of
            filenames for temporary files as generated by
            tmpnam(). It is measured in characters, and the
            ISO C standard requires it to be defined (para 
            7.9.1)."
    }
    
    cdl_option TMP_MAX {
        display       "Unique file names generated by tmpnam()"
        flavor        data
        legal_values  0 to 0x7fffffff
        default_value 0
        description   "
            This option defines the minimum number of
            unique file names generated by tmpnam(). The
            ISO C standard requires it to be defined (para
            7.9.1)."
    }
    
    cdl_component CYGSEM_LIBC_STDIO_WANT_BUFFERED_IO {
        display       "Buffered I/O"
        flavor        bool
        default_value 1 
        description   "
            This option controls whether input/output
            through the <stdio.h> functions is buffered.
            This may save some memory per file. It
            is equivalent to putting every file into
            non-buffered mode (_IONBF) through setvbuf(),
            except now it can never be altered back to
            buffered mode. Disabling buffering is strictly 
            non-compliant with the ISO C standard."
    
        cdl_option CYGNUM_LIBC_STDIO_BUFSIZE {
            display        "Default buffer size"
            flavor         data
            legal_values   1 to 0x7fffffff
            default_value  256
            description    "
                This option defines the default size of buffer
                used with calls to setbuf(), and is the default
                size for buffered streams that have not had
                either setbuf() or setvbuf() invoked on them.
                It is exactly equivalent to the standard
                constant BUFSIZ, except that it is 0 if
                CYGSEM_LIBC_STDIO_WANT_BUFFERED_IO is disabled.
                The ISO C standard requires this to be defined