Date: Sun, 10 Feb 2019 12:02:45 -0800 From: Mark Millard <marklmi@yahoo.com> To: Steve Kargl <sgk@troutmask.apl.washington.edu> Cc: Dimitry Andric <dim@freebsd.org>, freebsd-toolchain@freebsd.org Subject: Re: clang broken on current? Message-ID: <3357E34B-D91C-4197-86F0-9058C343CAC7@yahoo.com> In-Reply-To: <20190210193409.GA35990@troutmask.apl.washington.edu> References: <20190210050003.GA31811@troutmask.apl.washington.edu> <F26ACA01-4132-4020-8089-FB862347F37E@FreeBSD.org> <20190210184656.GD35569@troutmask.apl.washington.edu> <59881520-AB59-49C3-810F-C0676C3B037C@yahoo.com> <20190210193409.GA35990@troutmask.apl.washington.edu>
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On 2019-Feb-10, at 11:34, Steve Kargl <sgk at =
troutmask.apl.washington.edu> wrote:
> Having set CFLAGS+=3D-march=3Dnative -mtune=3Dnative and trying to
> force qt5-gui configure with -sse2 option, I have a config.summary
> that contains (my in-line comments ***)
>=20
> Build type: freebsd-clang (i386, CPU features: <none>)
>=20
> *** What????? ***
>=20
> Compiler: clang 7.0.1
> Configuration: compile_examples largefile rdrnd x86SimdAlways sharedr
> rpath release c++11 c++14 concurrent dbus reduce_exports =
reduce_relocations
> stl
> Build options:
> Mode ................................... release
> Optimize release build for size ........ no
> Building shared libraries .............. yes
> Using C standard ....................... C11
> Using C++ standard ..................... C++14
> Using ccache ........................... no
> Using gold linker ...................... no
> Using precompiled headers .............. no
> Using LTCG ............................. no
> Target compiler supports:
> SSE .................................. <none>
>=20
> *** That's not good. ***
>=20
> AVX .................................. <none>
> AVX512 ............................... <none>
> Other x86 ............................ RDRAND
> Intrinsics without -mXXX option ...... yes
> Build parts ............................ libs tools
/usr/ports/Mk/Uses/qt-dist.mk has:
=20
. if ${ARCH} =3D=3D i386 && empty(MACHINE_CPU:Msse2)
CONFIGURE_ARGS+=3D -no-sse2
. endif
This traces back to:
/usr/src/share/mk/bsd.cpu.mk and its:
. elif ${MACHINE_CPUARCH} =3D=3D "amd64"
MACHINE_CPU =3D amd64 sse2 sse mmx
. elif ${MACHINE_CPUARCH} =3D=3D "arm"
MACHINE_CPU =3D arm
. elif ${MACHINE_CPUARCH} =3D=3D "i386"
MACHINE_CPU =3D i486
and (I'll not list it all):
########## i386
. if ${MACHINE_CPUARCH} =3D=3D "i386"
. if ${CPUTYPE} =3D=3D "znver1"
MACHINE_CPU =3D avx2 avx sse42 sse41 ssse3 sse4a sse3 sse2 sse mmx k6 k5 =
i586
. elif ${CPUTYPE} =3D=3D "bdver4"
MACHINE_CPU =3D xop avx2 avx sse42 sse41 ssse3 sse4a sse3 sse2 sse mmx =
k6 k5 i586
. elif ${CPUTYPE} =3D=3D "bdver3" || ${CPUTYPE} =3D=3D "bdver2" || \
${CPUTYPE} =3D=3D "bdver1"
MACHINE_CPU =3D xop avx sse42 sse41 ssse3 sse4a sse3 sse2 sse mmx k6 k5 =
i586
. elif ${CPUTYPE} =3D=3D "btver2"
MACHINE_CPU =3D avx sse42 sse41 ssse3 sse4a sse3 sse2 sse mmx k6 k5 i586
. elif ${CPUTYPE} =3D=3D "btver1"
MACHINE_CPU =3D ssse3 sse4a sse3 sse2 sse mmx k6 k5 i586
. elif ${CPUTYPE} =3D=3D "amdfam10"
MACHINE_CPU =3D athlon-xp athlon k7 3dnow sse4a sse3 sse2 sse mmx k6 k5 =
i586
. elif ${CPUTYPE} =3D=3D "opteron-sse3" || ${CPUTYPE} =3D=3D =
"athlon64-sse3"
MACHINE_CPU =3D athlon-xp athlon k7 3dnow sse3 sse2 sse mmx k6 k5 i586
. elif ${CPUTYPE} =3D=3D "opteron" || ${CPUTYPE} =3D=3D "athlon64" || \
. . .
and:
########## amd64
. elif ${MACHINE_CPUARCH} =3D=3D "amd64"
. if ${CPUTYPE} =3D=3D "znver1"
MACHINE_CPU =3D avx2 avx sse42 sse41 ssse3 sse4a sse3
. . .
. endif
MACHINE_CPU +=3D amd64 sse2 sse mmx
########## Mips
. elif ${MACHINE_CPUARCH} =3D=3D "mips"
So it looks like freeBSD expects CPUTYPE to be set for i368 in order
to enable sse2 in MACHINE_CPU . Other things have a similar status
for amd64 but amd64 always has sse2 .
=3D=3D=3D
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)
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