Most of FreeBSD builds "reproducibly" (aka. with two builds producing identical binaries) but there are a few deviations from this. It would be great if these could be eliminated.
Reproducible Builds
The Reproducible Builds website has more information on the Reproducible Builds initiative, including the Reproducible Builds Definition.
Known problem files in the base system
Kernel modules with full paths (in non-debug sections)
Reported by the Debian GNU/kFreeBSD folks. Specifying .PATH: $(.CURDIR)/foo/bar in a Makefile expands ${.CURDIR} to an absolute path. Debian used relative paths instead: .PATH foo/bar. https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=757629
From the Debian report,
* modules are built with -DKLD_MODULE * KLD_MODULE causes LOCK_DEBUG to be defined (sys/lock.h) * LOCK_DEBUG causes mtx_assert() to use __FILE__ in debug messages (sys/mutex.h)
Triage required
The build option survey (from phk@, recently resurrected by bz@) demonstrated possible non-reproducibility in a number of files unrelated to the option being tested - for example:
usr/lib/debug/boot/kernel/aacraid.ko.debug file size=429288
usr/lib/debug/boot/kernel/aacraid.ko.debug file size=429280
usr/lib/debug/boot/kernel/acpi_asus.ko.debug file size=72032
usr/lib/debug/boot/kernel/acpi_asus.ko.debug file size=72024Failures appear to be a variety of different kernel module .debug files.
Different version of yacc used in build
Perhaps a build race?
--- obj-repro.a/sparc64.sparc64/scratch/tmp/emaste/freebsd/tmp/scratch/tmp/emaste/freebsd/usr.sbin/config/y.tab.c 2016-12-20 14:13:03.000000000 -0500 +++ obj-repro.b/sparc64.sparc64/scratch/tmp/emaste/freebsd/tmp/scratch/tmp/emaste/freebsd/usr.sbin/config/y.tab.c 2016-12-21 07:56:10.000000000 -0500 @@ -5,7 +5,7 @@ #define YYBYACC 1 #define YYMAJOR 1 #define YYMINOR 9 -#define YYPATCH 20161202 +#define YYPATCH 20160324 #define YYEMPTY (-1) #define yyclearin (yychar = YYEMPTY) ...
Resolved issues
File |
Issue |
Fix Revision |
/usr/include/osreldate.h |
copyright year; now derived from src/COPYRIGHT (Previously the build year was placed in the Copyright statement. This isn't even valid since the passage of time doesn't create new copyrightable work.) |
|
/usr/sbin/amd |
Build host and user (still contains the build OS name and version) |
|
/usr/sbin/bhyve |
build date/time |
|
/etc/mail/*.cf |
contains the user and host names from the build |
|
/usr/bin/svnlite |
weird things happening here, even after time stamps were removed in r257129. |
Fixed in an unknown revision. |
/usr/share/doc/psd/13.rcs/paper.ascii.gz |
contains the build date |
|
/var/db/mergemaster.mtree |
contains user and host names, and the build time |
|
/usr/share/man/man1/eqn.1.gz etc. |
groff man pages, contain source checkout date |
|
/usr/share/man/mandoc.db, /usr/share/openssl/man/mandoc.db |
ordering determined by inode number used as hash key |
|
tests/sys/geom/class/uzip |
generated geom_uzip filesystem images are now in svn |
|
/boot/{loader, pxeboot, userboot.so, zfsloader} |
build time/date; now optionally removed |
|
/boot/kernel/kernel |
time/date, user, host; now optionally removed |