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

#

#      stdio.cdl

#

#      C library stdio related configuration data

#

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

#####ECOSGPLCOPYRIGHTBEGIN####

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

######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  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 == \

                    "" }

    requires      { CYGBLD_ISO_STDIO_FILEACCESS_HEADER == \

                    "" }

    requires      { CYGBLD_ISO_STDIO_FORMATTED_IO_HEADER == \

                    "" }

    requires      { CYGBLD_ISO_STDIO_CHAR_IO_HEADER == \

                    "" }

    requires      { CYGBLD_ISO_STDIO_DIRECT_IO_HEADER == \

                    "" }

    requires      { CYGBLD_ISO_STDIO_ERROR_HEADER == \

                    "" }

    requires      { CYGBLD_ISO_STDIO_STREAMS_HEADER == \

                    "" }

    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  functions"

        default_value 1

        description   "

            This option chooses whether some of the

            particularly simple functions from

             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  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

                (para 7.9.1), and says it must be at least 256

                (para 7.9.2)."

        }

        cdl_option CYGSEM_LIBC_STDIO_DYNAMIC_SETVBUF {

            display       "setbuf()/setvbuf() allows dynamic setting"

            default_value 1

            description   "

                This option controls whether I/O buffers are

                implemented dynamically within the stdio

                implementation. Otherwise they will be static,

                and cannot be changed by setbuf()/setvbuf(). If

                they are static (i.e. this option is disabled),

                any attempt to use an arbitrary buffer size, or

                to pass a user-supplied buffer to setbuf() or

                setvbuf() will fail - the buffer is implemented

                internally as a static array taking the size

                of the configuration option BUFSIZ. The only

                exception is if a user buffer is not supplied,

                and the buffer size requested is less than

                BUFSIZ. In this case, the buffer will

                be configured to only use that amount of

                buffering. However the unused memory left over

                will NOT be freed. If this option is enabled,

                then setvbuf() can be used to assign a user supplied

                buffer to the stream.

                Either setting can be considered to

                be compliant with the ISO C standard."

        }

        cdl_option CYGSEM_LIBC_STDIO_SETVBUF_MALLOC {

            display       "setbuf()/setvbuf() uses malloc()"

            requires      CYGINT_ISO_MALLOC

            requires      CYGSEM_LIBC_STDIO_DYNAMIC_SETVBUF

            default_value { 0 != CYGINT_ISO_MALLOC }

            description   "

                This option controls whether buffers set by setbuf() and

                setvbuf() may be allocated using malloc()."

        }

    }

    # Define BUFSIZ with same value as ..._BUFSIZE or 0

    cdl_option BUFSIZ {

        display       "Default buffer size (BUFSIZ)"

        flavor        data

        calculated    CYGSEM_LIBC_STDIO_WANT_BUFFERED_IO \

                       ? "CYGNUM_LIBC_STDIO_BUFSIZE" : 0

    }

    cdl_option CYGFUN_LIBC_STDIO_ungetc {

        display       "Support for ungetc()"

        default_value   1

        description   "

            This option controls whether ungetc() is

            supported. If not, then some space can be

            saved, and speed is improved. Note that you

            MUST have this defined if you want to use the

            scanf() family of functions."

    }

    cdl_option CYGPKG_LIBC_STDIO_OPEN {

        display       "Dynamic opening/closing of files"

        requires      CYGINT_ISO_MALLOC

        implements    CYGINT_ISO_STDIO_POSIX_FDFUNCS

        default_value { 0 != CYGINT_ISO_MALLOC }

        description   "

            fopen() and fclose() use dynamic memory

            allocation routines to allocate memory for

            new FILE structure pointers. If a malloc

            implementation is available, this option

            may be enabled to use

            fopen() and fclose(). If disabled, only the

            default console streams - stdin, stdout and

            stderr - will be available."

    }

    cdl_option CYGDAT_LIBC_STDIO_DEFAULT_CONSOLE {

        display       "Default console device"

        flavor        data

        default_value CYGDAT_IO_SERIAL_TTY_CONSOLE

        description   "

            This option allows you to choose the

            default console device. In the current

            implementation, all these devices begin

            with the prefix /dev/ and are followed by

            the name of a device. The name of the device

            depends on the device drivers you have

            configured in your system. For example,

            /dev/ttydiag could be the HAL diagnostic output

            pseudo-device, or /dev/tty0 could be your

            first serial driver, depending on your

            configuration."

    }

    cdl_component CYGPKG_LIBC_STDIO_FLOATING_POINT {

        display       "Floating point support"

        flavor        none

        description   "

            This component allows floating point support

            to be enabled in certain standard I/O

            functions."

        cdl_option CYGSEM_LIBC_STDIO_PRINTF_FLOATING_POINT {

            display       "printf() family"

            requires      CYGPKG_LIBM

            default_value { 0 != CYGPKG_LIBM }

            description   "

                This option enables the use of floating point

                number output in the printf() family (i.e.

                printf(), sprintf(), vprintf(), etc.) of

                functions. A substantial amount of code space

                can be saved if this option is disabled. If it

                is disabled then floating point specifiers

                (%e, %f, %g) are ignored, and nothing is

                output."

        }

        cdl_option CYGSEM_LIBC_STDIO_SCANF_FLOATING_POINT {

            display       "scanf() family"

            requires      CYGPKG_LIBM

            requires      CYGINT_ISO_STDLIB_STRCONV_FLOAT

            default_value { 0 != CYGPKG_LIBM &&

            description   "

                This option enables the use of floating point

                number conversion in the scanf() family (i.e.

                scanf(), sscanf(), vscanf(), etc.) of

                functions. A substantial amount of code space

                can be saved if this option is disabled. If it

                is disabled then floating point specifiers

                (%e, %f, %g) are ignored, and nothing is

                converted."

        }

    }

    cdl_option CYGSEM_LIBC_STDIO_THREAD_SAFE_STREAMS {

        display       "Thread safe I/O streams"

        doc           ref/libc-thread-safety.html

        requires      CYGPKG_KERNEL

        default_value { 0 != CYGPKG_KERNEL }

        description   "

            This option controls whether standard I/O streams

            are thread-safe. Having this option set allows

            the streams to be locked when accessed by

            multiple threads simultaneously."

    }

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

    cdl_component CYGPKG_LIBC_STDIO_OPTIONS {

        display "C library stdio functions build options"

        flavor  none

        no_define

        description   "

            Package specific build options including control over

            compiler flags used only in building this package,

            and details of which tests are built."

        cdl_option CYGPKG_LIBC_STDIO_CFLAGS_ADD {

            display "Additional compiler flags"

            flavor  data

            no_define

            default_value { "" }

            description   "

                This option modifies the set of compiler flags for

                building the C library. These flags are used in addition

                to the set of global flags."

        }

        cdl_option CYGPKG_LIBC_STDIO_CFLAGS_REMOVE {

            display "Suppressed compiler flags"

            flavor  data

            no_define

            default_value { "" }

            description   "

                This option modifies the set of compiler flags for

                building the C library. These flags are removed from

                the set of global flags if present."

        }

        cdl_option CYGPKG_LIBC_STDIO_TESTS {

            display "C library stdio function tests"

            flavor  data

            no_define

            calculated { "tests/sprintf1 tests/sprintf2 tests/sscanf tests/stdiooutput" }

            description   "

                This option specifies the set of tests for the C library

                stdio functions."

        }

    }

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

    cdl_option CYGPKG_LIBC_STDIO_FILEIO {

        display "Enable use of FILEIO package for IO operations."

        active_if CYGPKG_IO_FILEIO

        requires CYGSEM_LIBC_STDIO_WANT_BUFFERED_IO

        calculated 1

    }

}

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

# EOF stdio.cdl