Ada: Add System.C_Time and GNAT.C_Time units to libgnat

The first unit provides the time_t, timeval and timespec types corresponding
to the C types defined by the OS, as well as various conversion functions.

The second unit is a mere renaming of the first under the GNAT hierarchy.

This removes C time types and conversions under System, and from bodies and
private parts under GNAT, while keeping visible types and conversions under
GNAT as Obsolescent.

[changelog]
	PR ada/114065
	* Makefile.rtl (GNATRTL_NONTASKING_OBJS): Add g-c_time$(objext) and
	s-c_time$(objext).
	(Aarch64/Android): Do not use s-osinte__android.adb.
	(SPARC/Solaris): Do not use s-osprim__solaris.adb.
	(x86/Solaris): Likewise.
	(LynxOS178): Do not use s-parame__posix2008.ads.
	(RTEMS): Likewise.
	(x32/Linux): Likewise, as well as s-linux__x32.ads.  Replace
	s-osprim__x32.adb with s-osprim__posix.adb.
	(LIBGNAT_OBJS): Remove cal.o.
	* cal.c: Delete.
	* doc/gnat_rm/the_gnat_library.rst (GNAT.C_Time): New entry.
	(GNAT.Calendar): Do not mention the obsolete conversion functions.
	* impunit.adb (Non_Imp_File_Names_95): Add g-c_time.
	* libgnarl/a-exetim__posix.adb: Add with clause for System.C_Time
	(Clock): Use type and functions from System.C_Time.
	* libgnarl/s-linux.ads: Remove with clause for System.Parameters.
	Remove declarations of C time types.
	* libgnarl/s-linux__alpha.ads: Likewise.
	* libgnarl/s-linux__android-aarch64.ads: Likewise.
	* libgnarl/s-linux__android-arm.ads: Likewise.
	* libgnarl/s-linux__hppa.ads: Likewise.
	* libgnarl/s-linux__loongarch.ads: Likewise.
	* libgnarl/s-linux__mips.ads: Likewise.
	* libgnarl/s-linux__riscv.ads: Likewise.
	* libgnarl/s-linux__sparc.ads: Likewise.
	* libgnarl/s-osinte__aix.ads: Likewise.
	* libgnarl/s-osinte__android.ads: Likewise.
	* libgnarl/s-osinte__cheribsd.ads: Likewise.
	* libgnarl/s-osinte__darwin.ads: Likewise.
	* libgnarl/s-osinte__dragonfly.ads: Likewise.
	* libgnarl/s-osinte__freebsd.ads: Likewise.
	* libgnarl/s-osinte__gnu.ads: Likewise.
	* libgnarl/s-osinte__hpux.ads: Likewise.
	* libgnarl/s-osinte__kfreebsd-gnu.ads: Likewise.
	* libgnarl/s-osinte__linux.ads: Likewise.
	* libgnarl/s-osinte__lynxos178e.ads: Likewise.
	* libgnarl/s-osinte__qnx.ads: Likewise.
	* libgnarl/s-osinte__rtems.ads: Likewise.
	* libgnarl/s-osinte__solaris.ads: Likewise.
	* libgnarl/s-osinte__vxworks.ads: Likewise.
	* libgnarl/s-qnx.ads: Likewise.
	* libgnarl/s-linux__x32.ads: Delete.
	* libgnarl/s-osinte__darwin.adb (To_Duration): Remove.
	(To_Timespec): Likewise.
	* libgnarl/s-osinte__aix.adb: Likewise.
	* libgnarl/s-osinte__dragonfly.adb: Likewise.
	* libgnarl/s-osinte__freebsd.adb: Likewise.
	* libgnarl/s-osinte__gnu.adb: Likewise.
	* libgnarl/s-osinte__lynxos178.adb: Likewise.
	* libgnarl/s-osinte__posix.adb: Likewise.
	* libgnarl/s-osinte__qnx.adb: Likewise.
	* libgnarl/s-osinte__rtems.adb: Likewise.
	* libgnarl/s-osinte__solaris.adb: Likewise.
	* libgnarl/s-osinte__vxworks.adb: Likewise.
	* libgnarl/s-osinte__x32.adb: Likewise.
	* libgnarl/s-taprop__solaris.adb: Add with clause for System.C_Time.
	(Monotonic_Clock): Use type and functions from System.C_Time.
	(RT_Resolution): Likewise.
	(Timed_Sleep): Likewise.
	(Timed_Delay): Likewise.
	* libgnarl/s-taprop__vxworks.adb: Likewise.
	* libgnarl/s-tpopmo.adb: Likewise.
	* libgnarl/s-osinte__android.adb: Delete.
	* libgnat/g-c_time.ads: New file.
	* libgnat/g-calend.adb: Delegate to System.C_Time.
	* libgnat/g-calend.ads: Likewise.
	* libgnat/g-socket.adb: Likewise.
	* libgnat/g-socthi.adb: Likewise.
	* libgnat/g-socthi__vxworks.adb: Likewise.
	* libgnat/g-sothco.ads: Likewise.
	* libgnat/g-spogwa.adb: Likewise.
	* libgnat/s-c_time.adb: New file.
	* libgnat/s-c_time.ads: Likewise.
	* libgnat/s-optide.adb: Import nanosleep here.
	* libgnat/s-os_lib.ads (time_t): Remove.
	(To_Ada): Adjust.
	(To_C): Likewise.
	* libgnat/s-os_lib.adb: Likewise.
	* libgnat/s-osprim__darwin.adb: Delegate to System.C_Time.
	* libgnat/s-osprim__posix.adb: Likewise.
	* libgnat/s-osprim__posix2008.adb: Likewise.
	* libgnat/s-osprim__rtems.adb: Likewise.
	* libgnat/s-osprim__unix.adb: Likewise.
	* libgnat/s-osprim__solaris.adb: Delete.
	* libgnat/s-osprim__x32.adb: Likewise.
	* libgnat/s-parame.ads (time_t_bits): Remove.
	* libgnat/s-parame__hpux.ads: Likewise.
	* libgnat/s-parame__vxworks.ads: Likewise.
	* libgnat/s-parame__posix2008.ads: Delete.
	* s-oscons-tmplt.c (SIZEOF_tv_nsec): New constant.

0 files changed, 0 insertions, 0 deletions