time.cdl

ecos实时嵌入式操作系统

# ====================================================================
#
#      time.cdl
#
#      C library time 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_TIME {
    display       "ISO C library date and time functions"
    description   "
        This package provides time functions specified by the
        ISO C standard - ISO/IEC 9899:1990."
    doc           ref/libc.html
    include_dir   cyg/libc/time  
    parent        CYGPKG_LIBC
    implements    CYGINT_ISO_C_TIME_TYPES
    implements    CYGINT_ISO_C_CLOCK_FUNCS
    requires      { CYGBLD_ISO_C_TIME_TYPES_HEADER == "<cyg/libc/time/time.h>" }
    requires      { CYGBLD_ISO_C_CLOCK_FUNCS_HEADER == \
                       "<cyg/libc/time/time.h>" }
    requires      CYGPKG_ISOINFRA
    requires      CYGINT_ISO_DIV
    requires      CYGINT_ISO_ABS

    compile       asctime.cxx       clock.cxx      \
                  ctime.cxx         difftime.cxx   \
                  gmtime.cxx        localtime.cxx  \
                  mktime.cxx        settime.cxx    \
                  strftime.cxx      time.cxx       \
                  timeutil.cxx


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

    cdl_option CYGSEM_LIBC_TIME_CLOCK_WORKING {
        display       "Working clock() function"
        requires      CYGFUN_KERNEL_THREADS_TIMER
        requires      CYGVAR_KERNEL_COUNTERS_CLOCK
        default_value 1
        description   "
            This option controls whether clock() will
            actually try and determine the process time
            usage. With this option disabled, clock() does
            not disappear, but will permanently return
            (clock_t)-1 as mandated by the ISO C standard."
    }
    
    cdl_option CYGSEM_LIBC_TIME_TIME_WORKING {
        display       "Working time() function"
        requires      CYGPKG_IO_WALLCLOCK
        default_value 1
        description   "
            This option controls whether time() will
            actually try and determine the current calendar
            time. With this option disabled, time() does
            not disappear, but will permanently return
            (time_t)-1 as mandated by the ISO C standard."
    }
    
    cdl_option CYGSEM_LIBC_TIME_SETTIME_WORKING {
        display       "Working cyg_libc_time_settime() function"
        requires      CYGPKG_IO_WALLCLOCK
        default_value 1
        description   "
            This option controls whether cyg_libc_time_settime()
            will actually try and set the current calendar
            time. With this option disabled,
            cyg_libc_time_settime() does not disappear, but
            will permanently return an error."
    }
    
    cdl_option CYGFUN_LIBC_TIME_POSIX {
        display       "POSIX time functions"
        default_value 1
        requires      CYGFUN_LIBC_STRING_BSD_FUNCS
        compile       asctime_r.cxx ctime_r.cxx gmtime_r.cxx \
                      localtime_r.cxx strptime.cxx
        description   "
            Enabling this option allows the use of the
            following functions defined in POSIX 1003.1:
            asctime_r(), ctime_r(), gmtime_r(), strptime(), and
            localtime_r()."
    }

    cdl_option CYGFUN_LIBC_TIME_SUS_EXTNS {
	display       "Single UNIX extensions"
	default_value 0
	description   "
            Enabling this option allows the use of
            certain additional conversion specifiers
            in the strftime function."
    }

    cdl_component CYGPKG_LIBC_TIME_ZONES {
        display       "Time zone offsets"
        flavor        none
        description   "
            These options control the default STandarD (STD)
            and Daylight Savings Time (DST)
            time offsets so that dates can be set correctly
            for the local environment."
        
        cdl_option CYGNUM_LIBC_TIME_DST_DEFAULT_STATE {
            display       "Default Daylight Savings Time state"
            flavor        data
            legal_values  -- -1 to 1
            default_value -- -1
            description   "
                This option controls whether the initial
                time environment is set up as STD, DST or
                unknown. Use the value 1 for DST, 0 for STD, 
                and (-1) for unknown. This can also be set at
                runtime using the cyg_libc_time_setdst()
                function."
        }
    
        cdl_option CYGNUM_LIBC_TIME_STD_DEFAULT_OFFSET {
            display       "Default Standard Time offset"
            flavor        data
            legal_values  -- -90000 to 90000
            default_value -- 0
            description   "
                This option controls the offset from UTC in
                seconds when in local Standard Time. This
                value can be positive or negative. It
                can also be set at run time using the
                cyg_libc_time_setzoneoffsets() function."
        }
    
        cdl_option CYGNUM_LIBC_TIME_DST_DEFAULT_OFFSET {
            display       "Default Daylight Savings Time offset"
            flavor        data
            legal_values  -- -90000 to 90000
            default_value -- 3600
            description   "
                This option controls the offset from UTC in
                seconds when in local Daylight Savings Time. This
                value can be positive or negative. It
                can also be set at run time using the
                cyg_libc_time_setzoneoffsets() function."
        }
    }        
    
    cdl_component CYGPKG_LIBC_TIME_INLINES {
        display       "Inline functions"
        flavor        none
        description   "
            These options control whether certain functions
            are available in inline form. This may lead to
            faster code at the expense of code space. But for
            some functions, or some functions with constant
            arguments, it may in fact lead to smaller code."
    
        cdl_option CYGIMP_LIBC_TIME_ASCTIME_INLINE {
            display       "asctime()"
            default_value 1
            description   "
                Allow the asctime() function to be inlined"
        }
    
        cdl_option CYGIMP_LIBC_TIME_CTIME_INLINE {
            display       "ctime()"
            default_value 1
            description   "
                Allow the ctime() function to be inlined"
        }
    
        cdl_option CYGIMP_LIBC_TIME_DIFFTIME_INLINE {
            display       "difftime()"
            default_value 1
            description   "
                Allow the difftime() function to be inlined"
        }
    
        cdl_option CYGIMP_LIBC_TIME_GMTIME_INLINE {
            display       "gmtime()"
            default_value 1
            description   "
                Allow the gmtime() function to be inlined"
        }
    
        cdl_option CYGIMP_LIBC_TIME_LOCALTIME_INLINE {
            display       "localtime()"
            default_value 1
            description   "
                Allow the localtime() function to be inlined"
        }
    
        cdl_option CYGIMP_LIBC_TIME_MKTIME_INLINE {
            display       "mktime()"
            default_value 1
            description   "
                Allow the mktime() function to be inlined"
        }
    
        cdl_option CYGIMP_LIBC_TIME_ASCTIME_R_INLINE {
            display       "asctime_r()"
            requires      CYGFUN_LIBC_TIME_POSIX
            default_value 1
            description   "
                Allow the asctime_r() function to be inlined"
        }
    
        cdl_option CYGIMP_LIBC_TIME_CTIME_R_INLINE {
            display       "ctime_r()"
            requires      CYGFUN_LIBC_TIME_POSIX
            default_value 1
            description   "
                Allow the ctime_r() function to be inlined"
        }
    
        cdl_option CYGIMP_LIBC_TIME_GMTIME_R_INLINE {
            display       "gmtime_r()"
            requires      CYGFUN_LIBC_TIME_POSIX
            default_value 1
            description   "
                Allow the gmtime_r() function to be inlined"
        }
    
        cdl_option CYGIMP_LIBC_TIME_LOCALTIME_R_INLINE {
            display       "localtime_r()"
            requires      CYGFUN_LIBC_TIME_POSIX
            default_value 1
            description   "
                Allow the localtime_r() function to be inlined"
        }
    }
# FIXME: Also want "inline all" and "don't inline any" options which requires
# (or not) all the above, but
# if we do that then we will require the ones that also depend on
# CYGFUN_LIBC_TIME_POSIX :-( Wait for full CDL to fix this
    
    cdl_option CYGNUM_LIBC_TIME_CLOCK_TRACE_LEVEL {
        display       "clock() tracing level"
        flavor        data
        legal_values  0 to 1
        default_value 0
        description   "
            Trace verbosity level for debugging the clock()
            function. Increase this value to get
            additional trace output when tracing is enabled."
    }

    cdl_component CYGPKG_LIBC_TIME_OPTIONS {
        display "C library time 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_TIME_CFLAGS_ADD {
            display "Additional compiler flags"
            flavor  data
            no_define
            default_value { "-Wno-format" }
            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_TIME_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_TIME_TESTS {
            display "C library time and date function tests"
            flavor  data
            no_define
            calculated { 
                "tests/asctime tests/clock tests/ctime tests/gmtime tests/localtime tests/mktime tests/strftime tests/time " 
                . (CYGFUN_LIBC_TIME_POSIX ? "tests/strptime" : "")
            }
            description   "
                This option specifies the set of tests for the C library
                time and date functions."
        }
    }
}

# ====================================================================
# EOF time.cdl