Change time_t from a 32-bit value to a 64-bit value, on FreeBSD/sparc64
only. This is a MAJOR incompatible change for the sparc64 platform, but will not effect FreeBSD on other architectures. Reviewed by: imp for UPDATING, freebsd-sparc for the change itself.
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2020-12-20 02:59:44 +00:00
svn path=/head/; revision=126817
7
UPDATING
7
UPDATING
@ -17,6 +17,13 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 5.x IS SLOW:
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developers choose to disable these features on build machines
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to maximize performance.
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20040310:
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The FreeBSD/sparc64 platform is changing time_t from 32-bits to
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64-bits. This is a very major incompatible change, so people
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using FreeBSD/sparc64 *must* read the UPDATING.64BTT file for
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detailed instructions on how to make this upgrade. People
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upgrading FreeBSD on other platforms can ignore this event.
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20040308:
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The packet filter (pf) is now installed with the base system. Make
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sure to run mergemaster -p before installworld to create required
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@ -1,6 +1,6 @@
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# -------+---------+---------+---------+---------+---------+---------+---------+
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The FreeBSD/sparc64 port is going to change time_t from 32-bits to 64-bits.
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The FreeBSD/sparc64 port has now changed time_t from 32-bits to 64-bits.
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This file explains the exact steps that users should follow to update their
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sparc64 systems for this change. People running FreeBSD on other types of
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hardware, such as CPU's from Intel or AMD, can ignore this file. For now,
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@ -43,7 +43,16 @@ upgrading the base system.
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Do not start this update unless you have the extra time.
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* READ THIS ENTIRE DOCUMENT at least once before starting the upgrade. *
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As of March 10th, the official value for time_t on sparc64 has changed to
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be 64-bits. If you really must build system with 32-bit time_t's, then it
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would be best to stick with a snapshot of current from before March 10th.
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With src snapshots after that point, there will soon be ports which assume
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you have a 64-bit time_t based on the value of __FreeBSD_version.
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If you are ready to upgrade, then *READ THIS ENTIRE DOCUMENT* at least
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once before starting the upgrade.
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# -------+---------+---------+---------+---------+---------+---------+---------+
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This is a major change. This change will *not* be backwards-compatible.
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Any programs which call system-routines for handling time-values will
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@ -60,8 +69,12 @@ trouble. We can not guarantee that these steps will avoid all possible
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problems, but if you ignore these steps you are very likely to run into
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some very painful and time-consuming headaches when upgrading.
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Step Pre-1: Update to a recent snapshot of -current, keeping it as
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a system with 32-bit time_t.
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Step Pre-1: Update to a recent snapshot of -current, and first build
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that as a system with 32-bit time_t. To do this, edit
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the file /usr/src/sys/sparc64/include/_types.h
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find the line:
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typedef __int64_t __time_t; /* time()... */
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and change '__int64_t' to '__int32_t'
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Step Pre-2: Install that system, using whatever steps you normally
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use, and make sure that installation seems to work okay.
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Step Pre-3: While still running that 32-bit time_t system, it would
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@ -78,17 +91,17 @@ Step Pre-4: For sparc64 machines which need DHCP:
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The 'dhclient' in the base system is known to be unreliable
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on a system which is upgraded to 64-bit time_t's. It may
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work for you, but it probably will not.
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As of March 3rd 2004, we have no fix for that.
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As of March 10th 2004, we have no fix for that.
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However, the net/isc-dhcp3-client port does seem to work.
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IF your machine needs DHCP, then you should probably install
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that port and make sure you can get it working *before* you
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make the change to use 64-bit time_t's.
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<instructions for early-adopters>
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After you have built and installed that src-snapshot with 32-bit time_t's,
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edit the file /usr/src/sys/sparc64/include/_types.h
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find the line:
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typedef __int32_t __time_t; /* time()... */
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and change '__int32_t' to '__int64_t'
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and change '__int32_t' back to '__int64_t'
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For best results, do NOT make any other changes. Do NOT cvsup the
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source tree trying to pick up any other changes. At this point you
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@ -104,8 +117,9 @@ Step Pre-4: For sparc64 machines which need DHCP:
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I am not suggesting that you have to do two whole buildworld/
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installworld cycles in a single day. You could easily wait a few
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days, or even a week between them. What I am suggesting is that
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you should not 'cvsup' your sources inbetween the two buildworlds.
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</instructions for early-adopters>
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you should not 'cvsup' your sources inbetween the two buildworlds.
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And then follow these steps to build and install the 64-bit time_t system:
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cd /usr/src #- 1.
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make cleanworld #- 2. or 'rm -Rf /usr/obj/usr/src/*'
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@ -299,9 +313,9 @@ to upgrade your ports, then I suggest the first thing you should do is:
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and log back in after recompiling that shell.
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portupgrade -Rr -f ezm3 cvsup-without-gui #- Ports 3 (maybe).
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If you want to rebuild a 64-bit time_t version of cvsup.
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Note: ezm3 (modula-3) needs a patch to work correctly after
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the change to 64-BTT. That fix has not been commited to the
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port yet [as of Mar 3rd], but it should be commited soon.
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Note: ezm3 (modula-3) needs a patch to work correctly after the
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change to 64-BTT. That fix has not been commited to the port
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yet [as of Mar 10th], but hopefully it will be commited soon.
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There are pre-built packages available for ezm3 and cvsup-without-gui on
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the new 64-bTT systems. This ezm3 package *does* include the necessarily
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@ -325,10 +339,11 @@ You can install the new packages with:
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"Now look over all the other ports you have installed, and
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re-compile everything that probably needs to be recompiled".
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If you are going to do it piecemeal, the next ports to force-recompile
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would probably be languages like perl and python, if you have them
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installed. Or you might want to play it safe at this point, and simply
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recompile *every* port that you have installed.
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If you are going to do it piecemeal, the next ports to force-rebuild would
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probably be languages like perl and python, if you have them installed.
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After that, force-rebuild the ports like autoconf and automake, if you
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have them installed. Or you might want to play it safe at this point,
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and simply recompile *every* port that you have installed.
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A different tactic to use for ports is to remove *all* ports before you
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do the installkernel/installworld step (while you're still on a 32-bTT
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@ -341,21 +356,6 @@ of a 'pkg_info' command before you start removing ports.
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If you run into problems when making this change, please report them to
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the mailing list freebsd-sparc64@FreeBSD.org .
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# -------+---------+---------+---------+---------+---------+---------+---------+
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<Final notes for early-adopters>
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For people who are helping out by testing these instructions, note
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that once you make this change, you must remember to KEEP changing
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__time_t in _types.h after every time you 'cvs update' or cvsup
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your /usr/src tree. If you forget, and end up building a world
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with 32-bit time_t's, you will probably have a very very bad day.
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Once this change is committed for real (which is scheduled for
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March 10th), you will not need to care about this issue as much.
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Also, a change has been committed to /usr/src/Makefile.inc1 which
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does try to protect you from making this mistake.
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</final notes for early-adopters>
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# -------+---------+---------+---------+---------+---------+---------+---------+
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# Notice that the following command can be useful in some settings:
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grep '#\- ' UPDATING.64BTT
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@ -74,7 +74,7 @@ typedef __int64_t __register_t;
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typedef __int64_t __segsz_t; /* segment size (in pages) */
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typedef __uint64_t __size_t; /* sizeof() */
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typedef __int64_t __ssize_t; /* byte count or error */
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typedef __int32_t __time_t; /* time()... */
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typedef __int64_t __time_t; /* time()... */
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typedef __uint64_t __uintfptr_t;
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typedef __uint64_t __uintmax_t;
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typedef __uint64_t __uintptr_t;
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