[OE-core] [PATCH version2] db: disable the ARM assembler mutex code

Li Zhou li.zhou at windriver.com
Mon Nov 7 03:02:16 UTC 2016

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>
 meta/recipes-support/db/db_6.0.35.bb | 9 ---------
 1 file changed, 9 deletions(-)

diff --git a/meta/recipes-support/db/db_6.0.35.bb b/meta/recipes-support/db/db_6.0.35.bb
index f60edf9..b1bec0e 100644
--- a/meta/recipes-support/db/db_6.0.35.bb
+++ b/meta/recipes-support/db/db_6.0.35.bb
@@ -77,15 +77,6 @@ do_configure() {
-# 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
-ARM_MUTEX = "--with-mutex=ARM/gcc-assembly"
-MUTEX = ""
-MUTEX_arm = "${ARM_MUTEX}"
-MUTEX_armeb = "${ARM_MUTEX}"
 EXTRA_OEMAKE_append_class-target = " LIBTOOL=${STAGING_BINDIR_CROSS}/${HOST_SYS}-libtool"
 EXTRA_OEMAKE += "STRIP=true docdir=${docdir}/db/"

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