[OE-core] [PATCH 1/1] db: disable the ARM assembler mutex code

[Herve Jourdain]

Hi,

I believe I solved that same problem by just adding, in the case of armv8
(which I believe may be the new architecture you're referring to):
MUTEX_armv8 = ""
This way, it allows previous versions to work just like they did before,
without having to disable ARM assembler mutex code for architectures that
support it correctly - up to armv7ve I believe.
Of course, we might need to also have a good definition for armv8, which is
the object of another thread.

Cheers,
Herve

-----Original Message-----
From: openembedded-core-bounces at lists.openembedded.org
[mailto:openembedded-core-bounces at lists.openembedded.org] On Behalf Of
Ovidiu Panait
Sent: jeudi 14 juin 2018 13:55
To: openembedded-core at lists.openembedded.org
Subject: [OE-core] [PATCH 1/1] db: disable the ARM assembler mutex code

The swpb in macro MUTEX_SET will cause "undefined instruction" error on the
new arm arches which don't support this assembly instruction any more. If
use ldrex/strex to replace swpb, the old arm arches don't support them. So
to avoid this issue, just disable the ARM assembler mutex code, and use the
default pthreads mutex.

Signed-off-by: Li Zhou <li.zhou at windriver.com>
Signed-off-by: Catalin Enache <catalin.enache at windriver.com>
Signed-off-by: Ovidiu Panait <ovidiu.panait at windriver.com>
---
 meta/recipes-support/db/db_5.3.28.bb | 13 +------------
 1 file changed, 1 insertion(+), 12 deletions(-)

diff --git a/meta/recipes-support/db/db_5.3.28.bb
b/meta/recipes-support/db/db_5.3.28.bb
index 093ee44909..15b4155a29 100644
--- a/meta/recipes-support/db/db_5.3.28.bb
+++ b/meta/recipes-support/db/db_5.3.28.bb
@@ -59,18 +59,7 @@ FILES_SOLIBSDEV = "${libdir}/libdb.so
${libdir}/libdb_cxx.so"
 # All the --disable-* options replace --enable-smallbuild, which breaks a
bunch of stuff (eg. postfix)  DB5_CONFIG ?= "--enable-o_direct
--disable-cryptography --disable-queue --disable-replication
--disable-verify --disable-compat185 --disable-sql"
 
-EXTRA_OECONF = "${DB5_CONFIG} --enable-shared --enable-cxx --with-sysroot"
-
-# Override the MUTEX setting here, the POSIX library is -# the default -
"POSIX/pthreads/library".
-# Don't ignore the nice SWP instruction on the ARM:
-# These enable the ARM assembler mutex code, this won't -# work with thumb
compilation...
-ARM_MUTEX = "--with-mutex=ARM/gcc-assembly"
-MUTEX = ""
-MUTEX_arm = "${ARM_MUTEX}"
-MUTEX_armeb = "${ARM_MUTEX}"
-EXTRA_OECONF += "${MUTEX} STRIP=true"
+EXTRA_OECONF = "${DB5_CONFIG} --enable-shared --enable-cxx --with-sysroot
STRIP=true"
 EXTRA_OEMAKE += "LIBTOOL='./${HOST_SYS}-libtool'"
 
 EXTRA_AUTORECONF += "--exclude=autoheader  -I ${S}/dist/aclocal
-I${S}/dist/aclocal_java"
--
2.17.1

--
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