Berkeley DB fails to build

[Carlos Rafael Giani <dv@pseudoterminal.org>]

Hello,

I noticed that since the C++ bindings for the berkeley DB were included 
in commit 23f29027db73d5759889b48fabdea7f6173217a7 , I cannot build db 
anymore.
The error is:

     /usr/lib/libstdc++.so: file not recognized: File format not recognized

this is the offending part in the log.do_compile file:

| libtool: link: arm-poky-linux-gnueabi-g++  -march=armv7-a 
-mthumb-interwork -mfloat-abi=hard -mfpu=neon -mtune=cortex-a9 
--sysroot=/home/dv/misc/yocto-setup-dora-c1/yocto/.build-yocto/tmp/sysroots/imx6dlsabresd 
-fPIC -DPIC -shared -nostdlib 
/home/dv/misc/yocto-setup-dora-c1/yocto/.build-yocto/tmp/sysroots/imx6dlsabresd/usr/lib/crti.o 
/home/dv/misc/yocto-setup-dora-c1/yocto/.build-yocto/tmp/sysroots/imx6dlsabresd/usr/lib/arm-poky-linux-gnueabi/4.8.2/crtbeginS.o 
.libs/cxx_channel.o .libs/cxx_db.o .libs/cxx_dbc.o .libs/cxx_dbt.o 
.libs/cxx_env.o .libs/cxx_except.o .libs/cxx_lock.o .libs/cxx_logc.o 
.libs/cxx_mpool.o .libs/cxx_multi.o .libs/cxx_rid.o .libs/cxx_seq.o 
.libs/cxx_site.o .libs/cxx_txn.o .libs/mut_tas.o .libs/bt_compare.o 
.libs/bt_compress.o .libs/bt_conv.o .libs/bt_curadj.o .libs/bt_cursor.o 
.libs/bt_delete.o .libs/bt_method.o .libs/bt_open.o .libs/bt_put.o 
.libs/bt_rec.o .libs/bt_reclaim.o .libs/bt_recno.o .libs/bt_rsearch.o 
.libs/bt_search.o .libs/bt_split.o .libs/bt_stat.o .libs/bt_compact.o 
.libs/bt_upgrade.o .libs/btree_auto.o .libs/hash.o .libs/hash_auto.o 
.libs/hash_compact.o .libs/hash_conv.o .libs/hash_dup.o 
.libs/hash_meta.o .libs/hash_method.o .libs/hash_open.o 
.libs/hash_page.o .libs/hash_rec.o .libs/hash_reclaim.o 
.libs/hash_stat.o .libs/hash_upgrade.o .libs/heap.o .libs/heap_auto.o 
.libs/heap_backup.o .libs/heap_conv.o .libs/heap_method.o 
.libs/heap_open.o .libs/heap_rec.o .libs/heap_reclaim.o 
.libs/heap_stat.o .libs/qam_stub.o .libs/rep_stub.o .libs/repmgr_stub.o 
.libs/db_vrfy_stub.o .libs/log_verify_stub.o .libs/lock.o 
.libs/lock_deadlock.o .libs/lock_failchk.o .libs/lock_id.o 
.libs/lock_list.o .libs/lock_method.o .libs/lock_region.o 
.libs/lock_stat.o .libs/lock_timer.o .libs/lock_util.o .libs/mut_alloc.o 
.libs/mut_failchk.o .libs/mut_method.o .libs/mut_region.o 
.libs/mut_stat.o .libs/crypto_stub.o .libs/clock.o .libs/crdel_auto.o 
.libs/crdel_rec.o .libs/db.o .libs/db_am.o .libs/db_auto.o 
.libs/db_backup.o .libs/db_byteorder.o .libs/db_cam.o .libs/db_cds.o 
.libs/db_compact.o .libs/db_compint.o .libs/db_conv.o .libs/db_copy.o 
.libs/db_dispatch.o .libs/db_dup.o .libs/db_err.o .libs/db_getlong.o 
.libs/db_idspace.o .libs/db_iface.o .libs/db_join.o .libs/db_log2.o 
.libs/db_meta.o .libs/db_method.o .libs/db_open.o .libs/db_overflow.o 
.libs/db_pr.o .libs/db_rec.o .libs/db_reclaim.o .libs/db_remove.o 
.libs/db_rename.o .libs/db_ret.o .libs/db_setid.o .libs/db_setlsn.o 
.libs/db_shash.o .libs/db_sort_multiple.o .libs/db_stati.o 
.libs/db_truncate.o .libs/db_upg.o .libs/db_upg_opd.o .libs/dbreg.o 
.libs/dbreg_stat.o .libs/dbreg_auto.o .libs/dbreg_rec.o 
.libs/dbreg_util.o .libs/dbt.o .libs/env_alloc.o .libs/env_config.o 
.libs/env_backup.o .libs/env_failchk.o .libs/env_file.o 
.libs/env_globals.o .libs/env_open.o .libs/env_method.o .libs/env_name.o 
.libs/env_recover.o .libs/env_region.o .libs/env_register.o 
.libs/env_sig.o .libs/env_stat.o .libs/fileops_auto.o .libs/fop_basic.o 
.libs/fop_rec.o .libs/fop_util.o .libs/hash_func.o .libs/hmac.o 
.libs/log.o .libs/log_archive.o .libs/log_compare.o .libs/log_debug.o 
.libs/log_get.o .libs/log_method.o .libs/log_print.o .libs/log_put.o 
.libs/log_stat.o .libs/mkpath.o .libs/mp_alloc.o .libs/mp_backup.o 
.libs/mp_bh.o .libs/mp_fget.o .libs/mp_fmethod.o .libs/mp_fopen.o 
.libs/mp_fput.o .libs/mp_fset.o .libs/mp_method.o .libs/mp_mvcc.o 
.libs/mp_region.o .libs/mp_register.o .libs/mp_resize.o .libs/mp_stat.o 
.libs/mp_sync.o .libs/mp_trickle.o .libs/openflags.o .libs/os_abort.o 
.libs/os_abs.o .libs/os_alloc.o .libs/os_clock.o .libs/os_cpu.o 
.libs/os_ctime.o .libs/os_config.o .libs/os_dir.o .libs/os_errno.o 
.libs/os_fid.o .libs/os_flock.o .libs/os_fsync.o .libs/os_getenv.o 
.libs/os_handle.o .libs/os_map.o .libs/os_method.o .libs/os_mkdir.o 
.libs/os_open.o .libs/os_path.o .libs/os_pid.o .libs/os_rename.o 
.libs/os_root.o .libs/os_rpath.o .libs/os_rw.o .libs/os_seek.o 
.libs/os_stack.o .libs/os_stat.o .libs/os_tmpdir.o .libs/os_truncate.o 
.libs/os_uid.o .libs/os_unlink.o .libs/os_yield.o .libs/partition.o 
.libs/seq_stat.o .libs/sequence.o .libs/sha1.o .libs/snprintf.o 
.libs/txn.o .libs/txn_auto.o .libs/txn_chkpt.o .libs/txn_failchk.o 
.libs/txn_method.o .libs/txn_rec.o .libs/txn_recover.o 
.libs/txn_region.o .libs/txn_stat.o .libs/txn_util.o .libs/xa.o 
.libs/xa_map.o .libs/zerofill.o   -lpthread 
-L/home/dv/misc/yocto-setup-dora-c1/yocto/.build-yocto/tmp/sysroots/x86_64-linux/usr/lib/cortexa9hf-vfp-neon-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.8.2 
-L/home/dv/misc/yocto-setup-dora-c1/yocto/.build-yocto/tmp/sysroots/imx6dlsabresd/lib 
-L/home/dv/misc/yocto-setup-dora-c1/yocto/.build-yocto/tmp/sysroots/imx6dlsabresd/usr/lib/arm-poky-linux-gnueabi/4.8.2 
-L/home/dv/misc/yocto-setup-dora-c1/yocto/.build-yocto/tmp/sysroots/imx6dlsabresd/usr/lib 
/usr/lib/libstdc++.so -lm -lc -lgcc_s 
/home/dv/misc/yocto-setup-dora-c1/yocto/.build-yocto/tmp/sysroots/imx6dlsabresd/usr/lib/arm-poky-linux-gnueabi/4.8.2/crtendS.o 
/home/dv/misc/yocto-setup-dora-c1/yocto/.build-yocto/tmp/sysroots/imx6dlsabresd/usr/lib/crtn.o 
-march=armv7-a -mthumb-interwork -mfloat-abi=hard -mfpu=neon 
-mtune=cortex-a9 
--sysroot=/home/dv/misc/yocto-setup-dora-c1/yocto/.build-yocto/tmp/sysroots/imx6dlsabresd 
-O2 -Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed   -Wl,-soname 
-Wl,libdb_cxx-5.3.so -o .libs/libdb_cxx-5.3.so

Note this part: 
-L/home/dv/misc/yocto-setup-dora-c1/yocto/.build-yocto/tmp/sysroots/imx6dlsabresd/usr/lib 
/usr/lib/libstdc++.so -lm -lc

I do not know where this stray "/usr/lib/libstdc++.so" comes from. 
Perhaps it is caused by the fact that db is already installed on the host.

Reverting the commit fixes the problem for me.

Cheers