On Fri, Aug 4, 2023 at 4:40 AM Ross Burton <[email protected]> wrote: > > On 25 Jul 2023, at 04:56, Khem Raj via lists.openembedded.org > <[email protected]> wrote: > > > > Signed-off-by: Khem Raj <[email protected]> > > --- > > meta/recipes-core/glibc/glibc_2.37.bb | 3 ++- > > 1 file changed, 2 insertions(+), 1 deletion(-) > > > > diff --git a/meta/recipes-core/glibc/glibc_2.37.bb > > b/meta/recipes-core/glibc/glibc_2.37.bb > > index 8ff9801ed4b..4290f3e6e4f 100644 > > --- a/meta/recipes-core/glibc/glibc_2.37.bb > > +++ b/meta/recipes-core/glibc/glibc_2.37.bb > > @@ -85,7 +85,8 @@ EXTRA_OECONF += "${@get_libc_fpu_setting(bb, d)}" > > EXTRA_OECONF:append:x86 = " ${@bb.utils.contains_any('TUNE_FEATURES', 'i586 > > c3', '--disable-cet', '--enable-cet', d)}" > > EXTRA_OECONF:append:x86-64 = " --enable-cet" > > > > -PACKAGECONFIG ??= "nscd memory-tagging" > > +PACKAGECONFIG ??= "nscd memory-tagging ${@bb.utils.filter('TUNE_FEATURES', > > 'sve', d)}" > > + > > PACKAGECONFIG[nscd] = "--enable-nscd,--disable-nscd" > > PACKAGECONFIG[memory-tagging] = > > "--enable-memory-tagging,--disable-memory-tagging" > > PACKAGECONFIG[sve] = "--enable-mathvec,--disable-mathvec" > > This is the wrong thing to do, imho. > > mathvec has existed since glibc 2.22 for x86-64 and only with 2.38 did it > gain aarch64 support, where it has both NEON and SVE (optional in 8.2+) > implementations. > > Fedora 38 and Debian 11 both have a libmvec.so, so it looks like we should be > turning it on by default for the relevant architectures (x86-64 for <2.38, > x86-64 and aarch64 for 2.38+).
these distros do not specify -mcpu like OE does and it lets glibc override these options which it does when detecting SVE but it fails for OE due to compiler flags because it inserts itself on top of glibc defaults > > Ross
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