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Subject: Re: ar and ranlib -D
From: Warner Losh <imp@bsdimp.com>
In-Reply-To: <86eh15usv2.fsf@nine.des.no>
Date: Thu, 10 Apr 2014 09:45:53 -0600
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References: <86eh15usv2.fsf@nine.des.no>
To: =?windows-1252?Q?Dag-Erling_Sm=F8rgrav?= <des@des.no>
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My only concern is with the %POSIX section. That change isn=92t needed =
for reproducible
builds.

Warner


On Apr 10, 2014, at 9:06 AM, Dag-Erling Sm=F8rgrav <des@des.no> wrote:

> The attached patch adds -D to ARFLAGS and introduces RANLIBFLAGS which
> defaults to -D.  This ensures that all timestamps inside static
> libraries in the base system are hardcoded to 0 (aka the epoch), which
> is a huge step towards fully reproducible builds.  Any objections?
>=20
> DES
> --=20
> Dag-Erling Sm=F8rgrav - des@des.no
>=20
> Index: share/mk/bsd.lib.mk
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> --- share/mk/bsd.lib.mk	(revision 264317)
> +++ share/mk/bsd.lib.mk	(working copy)
> @@ -172,7 +172,7 @@
> .else
> 	@${AR} ${ARFLAGS} ${.TARGET} `NM=3D'${NM}' lorder ${OBJS} =
${STATICOBJS} | tsort -q` ${ARADD}
> .endif
> -	${RANLIB} ${.TARGET}
> +	${RANLIB} ${RANLIBFLAGS} ${.TARGET}
> .endif
>=20
> .if !defined(INTERNALLIB)
> @@ -189,7 +189,7 @@
> .else
> 	@${AR} ${ARFLAGS} ${.TARGET} `NM=3D'${NM}' lorder ${POBJS} | =
tsort -q` ${ARADD}
> .endif
> -	${RANLIB} ${.TARGET}
> +	${RANLIB} ${RANLIBFLAGS} ${.TARGET}
> .endif
>=20
> .if defined(SHLIB_NAME) || \
> @@ -246,7 +246,7 @@
> 	@${ECHO} building special pic ${LIB} library
> 	@rm -f ${.TARGET}
> 	@${AR} ${ARFLAGS} ${.TARGET} ${SOBJS} ${ARADD}
> -	${RANLIB} ${.TARGET}
> +	${RANLIB} ${RANLIBFLAGS} ${.TARGET}
> .endif
>=20
> .if defined(WANT_LINT) && !defined(NO_LINT) && defined(LIB) && =
!empty(LIB)
> Index: share/mk/sys.mk
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> --- share/mk/sys.mk	(revision 264317)
> +++ share/mk/sys.mk	(working copy)
> @@ -37,11 +37,12 @@
>=20
> AR		?=3D	ar
> .if defined(%POSIX)
> -ARFLAGS		?=3D	-rv
> +ARFLAGS		?=3D	-rDv
> .else
> -ARFLAGS		?=3D	cru
> +ARFLAGS		?=3D	crD
> .endif
> RANLIB		?=3D	ranlib
> +RANLIBFLAGS	?=3D	-D
>=20
> AS		?=3D	as
> AFLAGS		?=3D
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