[OE-core] [PATCH][RFC][WIP 3/6] feature-arm-thumb.inc: respect ARM_INSTRUCTION_SET when adding thumb suffix

Fri Jan 31 19:03:20 UTC 2014

On Fri, Jan 31, 2014 at 07:46:45PM +0100, Martin Jansa wrote:
> On Fri, Jan 31, 2014 at 06:38:00PM +0100, Martin Jansa wrote:
> > On Wed, Jan 22, 2014 at 01:36:08AM +0100, Martin Jansa wrote:
> > > * this means that recipes with ARM_INSTRUCTION_SET explicitly changed
> > >   to arm will be built in feed without thumb suffix
> > > * I'm not sure if the rest of system correctly supports different
> > >   TUNE_PKGARCHs for different recipes, this is one of the reasons why
> > >   this is WIP/RFC
> > > 
> > > Signed-off-by: Martin Jansa <Martin.Jansa at gmail.com>
> > > ---
> > >  meta/conf/machine/include/arm/feature-arm-thumb.inc | 17 +++++++++++------
> > >  1 file changed, 11 insertions(+), 6 deletions(-)
> > > 
> > > diff --git a/meta/conf/machine/include/arm/feature-arm-thumb.inc b/meta/conf/machine/include/arm/feature-arm-thumb.inc
> > > index d58c4b4..09a127a 100644
> > > --- a/meta/conf/machine/include/arm/feature-arm-thumb.inc
> > > +++ b/meta/conf/machine/include/arm/feature-arm-thumb.inc
> > > @@ -5,14 +5,19 @@
> > >  # but requires more instructions (140% for 70% smaller code) so may be
> > >  # slower.
> > >  TUNEVALID[thumb] = "Use thumb instructions instead of ARM"
> > > -ARM_THUMB_M_OPT = "${@['-marm', '-mthumb'][d.getVar('ARM_INSTRUCTION_SET', True) == 'thumb']}"
> > > -TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', ' ${ARM_THUMB_M_OPT}', '', d)}"
> > > +ARM_THUMB_OPT = "${@['arm', 'thumb'][d.getVar('ARM_INSTRUCTION_SET', True) == 'thumb']}"
> > > +ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv4',  't',  '', d)}"
> > > +ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv5',  't',  '', d)}"
> > > +ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv6',  't',  '', d)}"
> > > +ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7a', 't2', '', d)}"
> > > +ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7r', 't2', '', d)}"
> > > +ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7m', 't2', '', d)}"
> > > +
> > > +TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', ' -m${ARM_THUMB_OPT}', '', d)}"
> > >  OVERRIDES .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', ':thumb', '', d)}"
> > >  
> > > -ARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', [ 'armv4', 'thumb' ], 't', '', d)}"
> > > -ARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', [ 'armv5', 'thumb' ], 't', '', d)}"
> > > -ARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', [ 'armv6', 'thumb' ], 't', '', d)}"
> > > -ARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', [ 'armv7a', 'thumb' ], 't2', '', d)}"
> > > +# Add suffix from ARM_THUMB_SUFFIX only if after all this we still set ARM_THUMB_OPT to thumb
> > > +ARMPKGSFX_THUMB .= "${@ d.getVar('ARM_THUMB_SUFFIX', True) if d.getVar('ARM_THUMB_OPT', True) == 'thumb'] else ''}"
> > 
> > In branch I've removed extra ']' in this line and moved this patch as
> > last in series, because it's really not ready for merge (eglibc-initial
> > fails).
> 
> Ah, there was another issue in 4/6 and "arm" TUNE_FEATURE wasn't
> inherited by higher architectures, so it was correctly forcing "thumb"
> mode - that's why eglibc-initial was failing and now it isn't.

OMG sorry for noise, yes there is still problem when missing thumb and
arm builds for the same machine with different PKGARCH and
eglibc-initial still fails

| checking build system type... x86_64-pc-linux-gnu
| checking host system type... arm-oe-linux-gnueabi
| checking for arm-oe-linux-gnueabi-gcc... arm-oe-linux-gnueabi-gcc  -march=armv5e -marm -mthumb-interwork --sysroot=/OE/build/oe-core/tmp-eglibc/sysroots/qemuarm
| checking for suffix of object files... configure: error: in `/OE/build/oe-core/tmp-eglibc/work/armv5e-oe-linux-gnueabi/eglibc-initial/2.18-r0/build-arm-oe-linux-gnueabi':
| configure: error: cannot compute suffix of object files: cannot compile
| See `config.log' for more details
| WARNING: /OE/build/oe-core/tmp-eglibc/work/armv5e-oe-linux-gnueabi/eglibc-initial/2.18-r0/temp/run.do_configure.3925:1 exit 1 from
|   /OE/build/oe-core/tmp-eglibc/work/armv5e-oe-linux-gnueabi/eglibc-initial/2.18-r0/eglibc-2.18/libc/configure --host=arm-oe-linux-gnueabi --build=x86_64-linux --prefix=/usr --without-cvs --disable-sanity-checks --with-headers=/OE/build/oe-core/tmp-eglibc/sysroots/qemuarm/usr/include --with-kconfig=/OE/build/oe-core/tmp-eglibc/sysroots/x86_64-linux/usr/bin --enable-hacker-mode --enable-addons

config.log:
configure:2768: arm-oe-linux-gnueabi-gcc  -march=armv5e -marm -mthumb-interwork --sysroot=/OE/build/oe-core/tmp-eglibc/sysroots/qemuarm -c  -O2 -pipe -g -feliminate-unused-debug-types  conftest.c >&5
/OE/build/oe-core/tmp-eglibc/work/armv5e-oe-linux-gnueabi/eglibc-initial/2.18-r0/eglibc-2.18/libc/configure: line 2770: arm-oe-linux-gnueabi-gcc: command not found
configure:2772: $? = 127

and the problem is basically that STAGING_BINDIR_TOOLCHAIN points to
different directory when building recipe with thumb enabled and
disabled, in this case gcc was built with thumb enabled and is installed
in:

sysroots/x86_64-linux/usr/bin/armv5te-oe-linux-gnueabi

OE qemuarm@ ~/build/oe-core $ ls /OE/build/oe-core/tmp-eglibc/sysroots/x86_64-linux/usr/bin/armv5te-oe-linux-gnueabi
arm-oe-linux-gnueabi-addr2line  arm-oe-linux-gnueabi-elfedit
arm-oe-linux-gnueabi-nm       arm-oe-linux-gnueabi-readelf
arm-oe-linux-gnueabi-ar         arm-oe-linux-gnueabi-gprof
arm-oe-linux-gnueabi-objcopy  arm-oe-linux-gnueabi-size
arm-oe-linux-gnueabi-as         arm-oe-linux-gnueabi-ld
arm-oe-linux-gnueabi-objdump  arm-oe-linux-gnueabi-strings
arm-oe-linux-gnueabi-c++filt    arm-oe-linux-gnueabi-ld.bfd
arm-oe-linux-gnueabi-ranlib   arm-oe-linux-gnueabi-strip

but when building eglibc-initial with thumb disalbed, TUNE_PKGARCH
becames armv5e and STAGING_BINDIR_TOOLCHAIN in PATH points to wrong dir:

# $STAGING_BINDIR_TOOLCHAIN
#   set conf/bitbake.conf:354
#     "${STAGING_DIR_NATIVE}${bindir_native}/${TUNE_PKGARCH}${TARGET_VENDOR}-${TARGET_OS}"
STAGING_BINDIR_TOOLCHAIN="/OE/build/oe-core/tmp-eglibc/sysroots/x86_64-linux/usr/bin/armv5e-oe-linux-gnueabi"

OE qemuarm@ ~/build/oe-core $ ls /OE/build/oe-core/tmp-eglibc/sysroots/x86_64-linux/usr/bin/armv5e-oe-linux-gnueabi
ls: cannot access /OE/build/oe-core/tmp-eglibc/sysroots/x86_64-linux/usr/bin/armv5e-oe-linux-gnueabi: No such file or directory

Any idea how to resolve this correctly?
-- 
Martin 'JaMa' Jansa     jabber: Martin.Jansa at gmail.com
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