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skrzyp |
# ====================================================================
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#
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# stdio.cdl
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#
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# C library stdio related configuration data
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#
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# ====================================================================
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## ####ECOSGPLCOPYRIGHTBEGIN####
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## -------------------------------------------
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## This file is part of eCos, the Embedded Configurable Operating System.
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## Copyright (C) 1998, 1999, 2000, 2001, 2002, 2009 Free Software Foundation, Inc.
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##
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## eCos is free software; you can redistribute it and/or modify it under
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## the terms of the GNU General Public License as published by the Free
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## Software Foundation; either version 2 or (at your option) any later
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## version.
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##
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## eCos is distributed in the hope that it will be useful, but WITHOUT
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## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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## for more details.
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##
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## You should have received a copy of the GNU General Public License
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## along with eCos; if not, write to the Free Software Foundation, Inc.,
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## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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##
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## As a special exception, if other files instantiate templates or use
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## macros or inline functions from this file, or you compile this file
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## and link it with other works to produce a work based on this file,
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## this file does not by itself cause the resulting work to be covered by
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## the GNU General Public License. However the source code for this file
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## must still be made available in accordance with section (3) of the GNU
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## General Public License v2.
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##
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## This exception does not invalidate any other reasons why a work based
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## on this file might be covered by the GNU General Public License.
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## -------------------------------------------
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## ####ECOSGPLCOPYRIGHTEND####
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# ====================================================================
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######DESCRIPTIONBEGIN####
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#
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# Author(s): jlarmour
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# Contributors:
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# Date: 2000-04-14
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#
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#####DESCRIPTIONEND####
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#
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# ====================================================================
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cdl_package CYGPKG_LIBC_STDIO {
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display "ISO C library standard input/output functions"
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description "
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This package provides standard input/output functions associated
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with the header file as specified by the
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ISO C standard - ISO/IEC 9899:1990."
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doc ref/libc.html
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include_dir cyg/libc/stdio
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parent CYGPKG_LIBC
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requires CYGPKG_IO
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requires CYGPKG_LIBC_I18N
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implements CYGINT_ISO_STDIO_FILETYPES
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implements CYGINT_ISO_STDIO_FILEACCESS
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implements CYGINT_ISO_STDIO_FILEPOS
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implements CYGINT_ISO_STDIO_FILEOPS
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implements CYGINT_ISO_STDIO_FORMATTED_IO
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implements CYGINT_ISO_STDIO_CHAR_IO
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implements CYGINT_ISO_STDIO_DIRECT_IO
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implements CYGINT_ISO_STDIO_ERROR
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implements CYGINT_ISO_STDIO_STREAMS
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requires { (CYGDAT_LIBC_STDIO_DEFAULT_CONSOLE == "\"/dev/ttydiag\"" ? \
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CYGPKG_IO_SERIAL_HALDIAG : 1) }
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requires { CYGBLD_ISO_STDIO_FILETYPES_HEADER == \
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"" }
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requires { CYGBLD_ISO_STDIO_FILEACCESS_HEADER == \
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"" }
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requires { CYGBLD_ISO_STDIO_FILEPOS_HEADER == \
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"" }
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requires { CYGBLD_ISO_STDIO_FILEOPS_HEADER == \
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"" }
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requires { CYGBLD_ISO_STDIO_FORMATTED_IO_HEADER == \
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"" }
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requires { CYGBLD_ISO_STDIO_CHAR_IO_HEADER == \
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"" }
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requires { CYGBLD_ISO_STDIO_DIRECT_IO_HEADER == \
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"" }
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requires { CYGBLD_ISO_STDIO_ERROR_HEADER == \
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"" }
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requires { CYGBLD_ISO_STDIO_STREAMS_HEADER == \
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"" }
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requires CYGPKG_ISOINFRA
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requires CYGINT_ISO_ERRNO_CODES
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requires CYGINT_ISO_ERRNO
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requires CYGINT_ISO_STRERROR
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requires CYGINT_ISO_STRING_STRFUNCS
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requires CYGINT_ISO_STRING_MEMFUNCS
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# The following is for scanf only. We could express this better,
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# particularly since scanf is also dependent on the optional ungetc.
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requires CYGINT_ISO_STDLIB_STRCONV
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compile common/fflush.cxx common/feof.cxx \
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common/freopen.cxx common/setvbuf.cxx \
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common/snprintf.cxx common/sprintf.cxx \
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common/sscanf.cxx common/stderr.cxx \
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common/stdin.cxx common/stdiofiles.cxx \
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common/fseek.cxx common/stdioinlines.cxx\
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common/stdiosupp.cxx common/stdout.cxx \
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common/stream.cxx common/streambuf.cxx \
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common/ungetc.cxx common/vsnprintf.cxx \
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common/vsscanf.cxx common/fileops.cxx \
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\
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input/fgetc.cxx input/fgets.cxx \
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input/fread.cxx input/fscanf.cxx \
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input/gets.cxx input/scanf.cxx \
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input/vfscanf.cxx \
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\
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output/fnprintf.cxx output/fprintf.cxx \
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output/fputc.cxx output/fputs.cxx \
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output/fwrite.cxx output/printf.cxx \
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output/vfnprintf.cxx
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# ====================================================================
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cdl_option CYGIMP_LIBC_STDIO_INLINES {
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display "Inline versions of functions"
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default_value 1
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description "
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This option chooses whether some of the
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particularly simple functions from
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are available as inline
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functions. This may improve performance, and as
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the functions are small, may even improve code
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size."
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}
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cdl_option FOPEN_MAX {
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display "Permitted number of open files"
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flavor data
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legal_values 3 to 0x7fffffff
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default_value 8
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description "
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This option controls the guaranteed minimum
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number of simultaneously open files. The ISO
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C standard requires it to be defined (para
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7.9.1), and if strictly compliant, it must be
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at least 8 (para 7.9.3). In practice it can be
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as low as 3 - for stdin, stdout and stderr."
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}
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cdl_option FILENAME_MAX {
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display "Maximum length of filename"
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flavor data
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legal_values 1 to 0x7fffffff
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default_value 16
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description "
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This option defines the maximum allowed size of
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a filename in characters. The ISO C standard
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requires it to be defined (para 7.9.1)."
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}
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cdl_option L_tmpnam {
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display "Maximum length of filenames for temporary files"
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flavor data
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legal_values 4 to 0x7fffffff
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default_value 16
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description "
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This option defines the maximum allowed size of
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filenames for temporary files as generated by
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tmpnam(). It is measured in characters, and the
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ISO C standard requires it to be defined (para
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7.9.1)."
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}
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cdl_option TMP_MAX {
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display "Unique file names generated by tmpnam()"
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flavor data
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legal_values 1 to 0x7fffffff
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default_value 25
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description "
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This option defines the minimum number of
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unique file names generated by tmpnam(). The
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ISO C standard requires it to be defined (para
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7.9.1) and for ISO compliance it should be at least
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25. Note that TMP_MAX names may not be generated
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if L_tmpnam is too small."
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}
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cdl_component CYGSEM_LIBC_STDIO_WANT_BUFFERED_IO {
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display "Buffered I/O"
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flavor bool
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default_value 1
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description "
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This option controls whether input/output
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through the functions is buffered.
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This may save some memory per file. It
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is equivalent to putting every file into
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non-buffered mode (_IONBF) through setvbuf(),
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except now it can never be altered back to
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buffered mode. Disabling buffering is strictly
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non-compliant with the ISO C standard."
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cdl_option CYGNUM_LIBC_STDIO_BUFSIZE {
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display "Default buffer size"
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flavor data
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legal_values 1 to 0x7fffffff
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default_value 256
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description "
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This option defines the default size of buffer
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used with calls to setbuf(), and is the default
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size for buffered streams that have not had
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either setbuf() or setvbuf() invoked on them.
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It is exactly equivalent to the standard
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constant BUFSIZ, except that it is 0 if
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CYGSEM_LIBC_STDIO_WANT_BUFFERED_IO is disabled.
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The ISO C standard requires this to be defined
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(para 7.9.1), and says it must be at least 256
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(para 7.9.2)."
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}
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cdl_option CYGSEM_LIBC_STDIO_DYNAMIC_SETVBUF {
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display "setbuf()/setvbuf() allows dynamic setting"
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default_value 1
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description "
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This option controls whether I/O buffers are
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implemented dynamically within the stdio
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implementation. Otherwise they will be static,
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and cannot be changed by setbuf()/setvbuf(). If
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they are static (i.e. this option is disabled),
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any attempt to use an arbitrary buffer size, or
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to pass a user-supplied buffer to setbuf() or
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setvbuf() will fail - the buffer is implemented
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internally as a static array taking the size
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of the configuration option BUFSIZ. The only
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exception is if a user buffer is not supplied,
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and the buffer size requested is less than
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BUFSIZ. In this case, the buffer will
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be configured to only use that amount of
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buffering. However the unused memory left over
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will NOT be freed. If this option is enabled,
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then setvbuf() can be used to assign a user supplied
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buffer to the stream.
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Either setting can be considered to
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be compliant with the ISO C standard."
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}
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cdl_option CYGSEM_LIBC_STDIO_SETVBUF_MALLOC {
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display "setbuf()/setvbuf() uses malloc()"
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requires CYGINT_ISO_MALLOC
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requires CYGSEM_LIBC_STDIO_DYNAMIC_SETVBUF
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default_value { 0 != CYGINT_ISO_MALLOC }
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description "
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| 251 |
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This option controls whether buffers set by setbuf() and
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setvbuf() may be allocated using malloc()."
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| 253 |
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}
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| 254 |
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| 255 |
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}
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| 256 |
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# Define BUFSIZ with same value as ..._BUFSIZE or 0
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| 257 |
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cdl_option BUFSIZ {
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| 258 |
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display "Default buffer size (BUFSIZ)"
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| 259 |
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flavor data
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| 260 |
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calculated CYGSEM_LIBC_STDIO_WANT_BUFFERED_IO \
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| 261 |
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? "CYGNUM_LIBC_STDIO_BUFSIZE" : 0
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| 262 |
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}
|
| 263 |
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| 264 |
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cdl_option CYGFUN_LIBC_STDIO_ungetc {
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| 265 |
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display "Support for ungetc()"
|
| 266 |
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default_value 1
|
| 267 |
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description "
|
| 268 |
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This option controls whether ungetc() is
|
| 269 |
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supported. If not, then some space can be
|
| 270 |
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saved, and speed is improved. Note that you
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| 271 |
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MUST have this defined if you want to use the
|
| 272 |
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scanf() family of functions."
|
| 273 |
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}
|
| 274 |
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| 275 |
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cdl_component CYGPKG_LIBC_STDIO_OPEN {
|
| 276 |
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display "Dynamic opening/closing of files"
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| 277 |
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requires CYGINT_ISO_MALLOC
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| 278 |
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default_value { 0 != CYGINT_ISO_MALLOC }
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| 279 |
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compile common/fopen.cxx common/fclose.cxx
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| 280 |
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description "
|
| 281 |
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fopen() and fclose() use dynamic memory
|
| 282 |
|
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allocation routines to allocate memory for
|
| 283 |
|
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new FILE structure pointers. If a malloc
|
| 284 |
|
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implementation is available, this option
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| 285 |
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may be enabled to use
|
| 286 |
|
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fopen() and fclose(). If disabled, only the
|
| 287 |
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default console streams - stdin, stdout and
|
| 288 |
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stderr - will be available."
|
| 289 |
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| 290 |
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cdl_option CYGFUN_LIBC_STDIO_OPEN_POSIX_FDFUNCS {
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| 291 |
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display "POSIX fdopen/fileno functions"
|
| 292 |
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active_if CYGPKG_LIBC_STDIO_FILEIO
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| 293 |
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implements CYGINT_ISO_STDIO_POSIX_FDFUNCS
|
| 294 |
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calculated 1
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| 295 |
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description "This identifies to the rest of the system
|
| 296 |
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whether the POSIX fdopen() and
|
| 297 |
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fileno() functions are implemented."
|
| 298 |
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}
|
| 299 |
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}
|
| 300 |
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|
| 301 |
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cdl_option CYGDAT_LIBC_STDIO_DEFAULT_CONSOLE {
|
| 302 |
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display "Default console device"
|
| 303 |
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flavor data
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| 304 |
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default_value { CYGDAT_IO_SERIAL_TTY_CONSOLE ? CYGDAT_IO_SERIAL_TTY_CONSOLE : "\"/dev/null\"" }
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description "
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| 306 |
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This option allows you to choose the
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| 307 |
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default console device. In the current
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| 308 |
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implementation, all these devices begin
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| 309 |
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with the prefix /dev/ and are followed by
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| 310 |
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the name of a device. The name of the device
|
| 311 |
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depends on the device drivers you have
|
| 312 |
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configured in your system. For example,
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| 313 |
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/dev/ttydiag could be the HAL diagnostic output
|
| 314 |
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pseudo-device, or /dev/tty0 could be your
|
| 315 |
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first serial driver, depending on your
|
| 316 |
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configuration."
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| 317 |
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}
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| 318 |
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| 319 |
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cdl_component CYGPKG_LIBC_STDIO_FLOATING_POINT {
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| 320 |
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display "Floating point support"
|
| 321 |
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flavor none
|
| 322 |
|
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description "
|
| 323 |
|
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This component allows floating point support
|
| 324 |
|
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to be enabled in certain standard I/O
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| 325 |
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functions."
|
| 326 |
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| 327 |
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cdl_option CYGSEM_LIBC_STDIO_PRINTF_FLOATING_POINT {
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| 328 |
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display "printf() family"
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| 329 |
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requires CYGPKG_LIBM
|
| 330 |
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default_value { 0 != CYGPKG_LIBM }
|
| 331 |
|
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description "
|
| 332 |
|
|
This option enables the use of floating point
|
| 333 |
|
|
number output in the printf() family (i.e.
|
| 334 |
|
|
printf(), sprintf(), vprintf(), etc.) of
|
| 335 |
|
|
functions. A substantial amount of code space
|
| 336 |
|
|
can be saved if this option is disabled. If it
|
| 337 |
|
|
is disabled then floating point specifiers
|
| 338 |
|
|
(%e, %f, %g) are ignored, and nothing is
|
| 339 |
|
|
output."
|
| 340 |
|
|
}
|
| 341 |
|
|
|
| 342 |
|
|
cdl_option CYGSEM_LIBC_STDIO_SCANF_FLOATING_POINT {
|
| 343 |
|
|
display "scanf() family"
|
| 344 |
|
|
requires CYGPKG_LIBM
|
| 345 |
|
|
requires CYGINT_ISO_STDLIB_STRCONV_FLOAT
|
| 346 |
|
|
default_value { 0 != CYGPKG_LIBM &&
|
| 347 |
|
|
|
| 348 |
|
|
description "
|
| 349 |
|
|
This option enables the use of floating point
|
| 350 |
|
|
number conversion in the scanf() family (i.e.
|
| 351 |
|
|
scanf(), sscanf(), vscanf(), etc.) of
|
| 352 |
|
|
functions. A substantial amount of code space
|
| 353 |
|
|
can be saved if this option is disabled. If it
|
| 354 |
|
|
is disabled then floating point specifiers
|
| 355 |
|
|
(%e, %f, %g) are ignored, and nothing is
|
| 356 |
|
|
converted."
|
| 357 |
|
|
}
|
| 358 |
|
|
}
|
| 359 |
|
|
|
| 360 |
|
|
cdl_option CYGFUN_LIBC_STDIO_LONGLONG {
|
| 361 |
|
|
display "Long long support"
|
| 362 |
|
|
requires CYGFUN_LIBC_STDLIB_CONV_LONGLONG
|
| 363 |
|
|
default_value 1
|
| 364 |
|
|
description "
|
| 365 |
|
|
This option allows various functions in the C Standard I/O
|
| 366 |
|
|
library to support the 'long long' datatype. Doing so
|
| 367 |
|
|
will come with a noticeable code size penalty however."
|
| 368 |
|
|
}
|
| 369 |
|
|
|
| 370 |
|
|
cdl_option CYGSEM_LIBC_STDIO_THREAD_SAFE_STREAMS {
|
| 371 |
|
|
display "Thread safe I/O streams"
|
| 372 |
|
|
doc ref/libc-thread-safety.html
|
| 373 |
|
|
active_if CYGPKG_KERNEL
|
| 374 |
|
|
default_value 1
|
| 375 |
|
|
description "
|
| 376 |
|
|
This option controls whether standard I/O streams
|
| 377 |
|
|
are thread-safe. Having this option set allows
|
| 378 |
|
|
the streams to be locked when accessed by
|
| 379 |
|
|
multiple threads simultaneously."
|
| 380 |
|
|
}
|
| 381 |
|
|
|
| 382 |
|
|
cdl_option CYGIMP_LIBC_STDIO_C99_SNPRINTF {
|
| 383 |
|
|
display "C99 compliant snprintf() family"
|
| 384 |
|
|
default_value 0
|
| 385 |
|
|
description "
|
| 386 |
|
|
This option allows C99 compliant implementation of
|
| 387 |
|
|
snprintf() family (i.e. snprintf(), vsnprintf())
|
| 388 |
|
|
of functions. C99 compliant snprintf() functions
|
| 389 |
|
|
return the number of characters that would have been written
|
| 390 |
|
|
to a sufficiently sized buffer (excluding the '\\0').
|
| 391 |
|
|
If this option is disabled, the functions simply return
|
| 392 |
|
|
the number of bytes that have been written to the buffer."
|
| 393 |
|
|
}
|
| 394 |
|
|
|
| 395 |
|
|
|
| 396 |
|
|
# ====================================================================
|
| 397 |
|
|
|
| 398 |
|
|
cdl_option CYGPKG_LIBC_STDIO_FILEIO {
|
| 399 |
|
|
display "Enable use of FILEIO package for IO operations."
|
| 400 |
|
|
active_if CYGPKG_IO_FILEIO
|
| 401 |
|
|
requires CYGSEM_LIBC_STDIO_WANT_BUFFERED_IO
|
| 402 |
|
|
requires CYGSEM_LIBC_STDIO_DYNAMIC_SETVBUF
|
| 403 |
|
|
calculated 1
|
| 404 |
|
|
description "
|
| 405 |
|
|
This CDL exists to control how the standard I/O functions
|
| 406 |
|
|
interface to the underlying I/O system. Either using the
|
| 407 |
|
|
File I/O package, or the generic I/O package which is used
|
| 408 |
|
|
by fewer devices."
|
| 409 |
|
|
}
|
| 410 |
|
|
}
|
| 411 |
|
|
|
| 412 |
|
|
# ====================================================================
|
| 413 |
|
|
|
| 414 |
|
|
cdl_component CYGPKG_LIBC_STDIO_OPTIONS {
|
| 415 |
|
|
display "C library stdio functions build options"
|
| 416 |
|
|
flavor none
|
| 417 |
|
|
no_define
|
| 418 |
|
|
description "
|
| 419 |
|
|
Package specific build options including control over
|
| 420 |
|
|
compiler flags used only in building this package,
|
| 421 |
|
|
and details of which tests are built."
|
| 422 |
|
|
|
| 423 |
|
|
|
| 424 |
|
|
cdl_option CYGPKG_LIBC_STDIO_CFLAGS_ADD {
|
| 425 |
|
|
display "Additional compiler flags"
|
| 426 |
|
|
flavor data
|
| 427 |
|
|
no_define
|
| 428 |
|
|
default_value { "" }
|
| 429 |
|
|
description "
|
| 430 |
|
|
This option modifies the set of compiler flags for
|
| 431 |
|
|
building the C library. These flags are used in addition
|
| 432 |
|
|
to the set of global flags."
|
| 433 |
|
|
}
|
| 434 |
|
|
|
| 435 |
|
|
cdl_option CYGPKG_LIBC_STDIO_CFLAGS_REMOVE {
|
| 436 |
|
|
display "Suppressed compiler flags"
|
| 437 |
|
|
flavor data
|
| 438 |
|
|
no_define
|
| 439 |
|
|
default_value { "" }
|
| 440 |
|
|
description "
|
| 441 |
|
|
This option modifies the set of compiler flags for
|
| 442 |
|
|
building the C library. These flags are removed from
|
| 443 |
|
|
the set of global flags if present."
|
| 444 |
|
|
}
|
| 445 |
|
|
|
| 446 |
|
|
cdl_option CYGPKG_LIBC_STDIO_TESTS {
|
| 447 |
|
|
display "C library stdio function tests"
|
| 448 |
|
|
flavor data
|
| 449 |
|
|
no_define
|
| 450 |
|
|
calculated {
|
| 451 |
|
|
"tests/sprintf1 tests/sprintf2 tests/snprintf tests/sscanf tests/stdiooutput "
|
| 452 |
|
|
. ((CYGPKG_IO_FILEIO && CYGPKG_FS_RAM) ? "tests/fileio " : "")
|
| 453 |
|
|
}
|
| 454 |
|
|
description "
|
| 455 |
|
|
This option specifies the set of tests for the C library
|
| 456 |
|
|
stdio functions."
|
| 457 |
|
|
}
|
| 458 |
|
|
}
|
| 459 |
|
|
|
| 460 |
|
|
# ====================================================================
|
| 461 |
|
|
# EOF stdio.cdl
|
