Date: Wed, 31 Dec 2014 21:12:41 -0700 From: Warner Losh <imp@bsdimp.com> To: Dimitry Andric <dim@FreeBSD.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers <src-committers@freebsd.org>, Warner Losh <imp@FreeBSD.org> Subject: Re: svn commit: r276488 - in head: share/mk sys/arm/broadcom/bcm2835 sys/conf Message-ID: <27B917EC-CB35-4BF6-AB8F-4CBF56EC3E41@bsdimp.com> In-Reply-To: <760D3407-921D-4249-9DC2-74610FA46920@FreeBSD.org> References: <201501010200.t01205Ge007058@svn.freebsd.org> <760D3407-921D-4249-9DC2-74610FA46920@FreeBSD.org>
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--Apple-Mail=_A1D24157-531D-41DD-BA47-BBF8AA78E05F Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 > On Dec 31, 2014, at 8:52 PM, Dimitry Andric <dim@FreeBSD.org> wrote: >=20 > On 01 Jan 2015, at 03:00, Warner Losh <imp@FreeBSD.org> wrote: >>=20 >> Author: imp >> Date: Thu Jan 1 02:00:04 2015 >> New Revision: 276488 >> URL: https://svnweb.freebsd.org/changeset/base/276488 >>=20 >> Log: >> Fix module builds on arm (and maybe others) by turning off a whole >> raft of new warnings that appear to be on by default in clang 3.5.0. >> Fix RPI-B build issues with new clang not liking the ability to pass >> arbitrary flags to as, since some flags are more arbitrary (and thus >> verboten) than others. >>=20 >> These warnings should be actually fixed in the code, but this is a >> band-aide to get things (almost) building again. >>=20 >> Modified: >> head/share/mk/bsd.kmod.mk >> head/share/mk/bsd.sys.mk >> head/sys/arm/broadcom/bcm2835/std.bcm2835 >> head/sys/conf/kern.mk >>=20 >> Modified: head/share/mk/bsd.kmod.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=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D >> --- head/share/mk/bsd.kmod.mk Thu Jan 1 01:43:00 2015 = (r276487) >> +++ head/share/mk/bsd.kmod.mk Thu Jan 1 02:00:04 2015 = (r276488) >> @@ -13,5 +13,3 @@ SYSDIR=3D ${_dir} >> .endif >>=20 >> .include "${SYSDIR}/conf/kmod.mk" >> - >> -.include <bsd.sys.mk> >>=20 >> Modified: head/share/mk/bsd.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=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D >> --- head/share/mk/bsd.sys.mk Thu Jan 1 01:43:00 2015 = (r276487) >> +++ head/share/mk/bsd.sys.mk Thu Jan 1 02:00:04 2015 = (r276488) >> @@ -110,11 +110,7 @@ CWARNFLAGS+=3D -Wno-format >> CWARNFLAGS+=3D -Wno-unknown-pragmas >> .endif # IGNORE_PRAGMA >>=20 >> -.if ${COMPILER_TYPE} =3D=3D "clang" >> -# Would love to do this unconditionally, but can't due to its use in >> -# kernel build coupled with CFLAGS.${TARGET} feature >> CLANG_NO_IAS=3D -no-integrated-as >> -.endif >> CLANG_OPT_SMALL=3D -mstack-alignment=3D8 -mllvm -inline-threshold=3D3\ >> -mllvm -simplifycfg-dup-ret -mllvm -enable-gvn=3Dfalse >> CFLAGS.clang+=3D -Qunused-arguments >=20 > This should not be removed from bsd.sys.mk, since other things depend = on > it, are you sure that you want this? :) I may be wrong here for boot stuff that uses it. > As far as I know, there are still a few places in the tree that use = the > CLANG_NO_IAS macro. It would be nice if those all went away, = though=E2=80=A6 Only for boot. Thanks, though I think they may be CFLAGS.clang +=3D = there. > Modified: head/sys/arm/broadcom/bcm2835/std.bcm2835 >> = =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=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D >> --- head/sys/arm/broadcom/bcm2835/std.bcm2835 Thu Jan 1 = 01:43:00 2015 (r276487) >> +++ head/sys/arm/broadcom/bcm2835/std.bcm2835 Thu Jan 1 = 02:00:04 2015 (r276488) >> @@ -2,7 +2,7 @@ >>=20 >> machine arm armv6 >> cpu CPU_ARM1176 >> -makeoptions CONF_CFLAGS=3D"-mcpu=3Darm1176jzf-s = -Wa,-mcpu=3Darm1176jzf-s" >> +makeoptions CONF_CFLAGS=3D"-mcpu=3Darm1176jzf-s" >>=20 >> files "../broadcom/bcm2835/files.bcm2835" >>=20 >>=20 >> Modified: head/sys/conf/kern.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=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D >> --- head/sys/conf/kern.mk Thu Jan 1 01:43:00 2015 = (r276487) >> +++ head/sys/conf/kern.mk Thu Jan 1 02:00:04 2015 = (r276488) >> @@ -164,4 +164,26 @@ CFLAGS+=3D -fstack-protector >> CFLAGS+=3D -gdwarf-2 >> .endif >>=20 >> +# A whole bunch of new default warnings in clang 3.5 subpress for = now until >> +# this can be cleaned up. >> +.if ${COMPILER_VERSION} >=3D 30500 >> +CFLAGS.clang+=3D -Wno-pointer-sign -Wno-constant-conversion = -Wno-format \ >> + -Wno-shift-count-negative -Wno-tautological-pointer-compare \ >> + -Wno-shift-count-overflow -Wno-tautological-compare >> +.endif >> + >> CFLAGS+=3D ${CFLAGS.${COMPILER_TYPE}} >=20 > Note that for x86, all of these warnings were already either fixed or > suppressed. I assume this will be fleshed out later? Yea, but since a build universe wasn=E2=80=99t done, they were present = in the build. They are harmless on other architectures. >> +# Tell bmake not to mistake standard targets for things to be = searched for >> +# or expect to ever be up-to-date. >> +PHONY_NOTMAIN =3D afterdepend afterinstall all beforedepend = beforeinstall \ >> + beforelinking build build-tools buildfiles buildincludes = \ >> + checkdpadd clean cleandepend cleandir cleanobj configure = \ >> + depend dependall distclean distribute exe \ >> + html includes install installfiles installincludes lint = \ >> + obj objlink objs objwarn realall realdepend \ >> + realinstall regress subdir-all subdir-depend = subdir-install \ >> + tags whereobj >> + >> +.PHONY: ${PHONY_NOTMAIN} >> +.NOTMAIN: ${PHONY_NOTMAIN} >>=20 >=20 > Was this latter part intentional? It does not seem to have anything = to > do with clang at all. It was the only bit of bsd.sys.mk that was needed. Warner --Apple-Mail=_A1D24157-531D-41DD-BA47-BBF8AA78E05F Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc Content-Description: Message signed with OpenPGP using GPGMail -----BEGIN PGP SIGNATURE----- Comment: GPGTools - https://gpgtools.org iQIcBAEBCgAGBQJUpMk5AAoJEGwc0Sh9sBEA2rQP+gPkRpZsLXCeUhB6ugqMJYbl zEIRp/ZMZKoXBW0qFHqXmzbnI1zW3er+GyKIyV1FUD0YebzbY4Mtrak20vzkThbs 3kzey2tEzaLXlEu6mfv4FXszbwTY/ndrBvBvACj/7pIfO3YCH061lSinjzq0a1wM Az3cWibF4dMVwp7QA1k/rypyB+mHwmP4j5UQs7YnTHVttWNBn6okIX6PRr9xKpv3 kKOlyEjLNGZ4+P08v3IEfIy6ndm8Et0kjDcve+09P4HHYEfRCb6sMgCWCoDbwScH Lz7Hf5SSl+svd9j5cC0xqZCRdyUdNtuCn4Q9oEKX/XtiyzpgaooImgBderTg5pcv 7IQYBAyNcL1Swak+zETdOJFjoWRiuKjYPTktm4ACEyFt4INxMlv3KrhlS9kNu/80 JQUo/oI1TxsZih5RwZX+qeqW7Xj1m5RXPpiYRCe6P4KbIk9HnzYwPDTCGFZy6vQk d0kavJXu85KEKZl5+MCVaxh5I/MvWs8lZq7aTGkESkBI3ENIUsZf2xLjML0Nt7ih dxzED07sByBtJZyJmdrinmaJ++ermaV0LN6XT7WTHa3eDlFGf+mw2RvjsHbEBWxU SQG5vepL3N2C+vZvowSTQT+P+xWeHFmrdis4VuGlQmhSazZmVGPbh/nO1f6Pw/pd ZFJZ9+BbnjIootJhqw4L =zpqP -----END PGP SIGNATURE----- --Apple-Mail=_A1D24157-531D-41DD-BA47-BBF8AA78E05F--
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