FYI (VirtualBox FreeBSD_10.1-64bit.7z from http://www.osboxes.org/freebsd/) root@osboxes:~/mail # rm -rf .notmuch/ root@osboxes:~/mail # notmuch new Found 1 total files (that's not much mail). Warning: /root/mail/new/new.mail is an mbox containing a single message, likely caused by misconfigured mail delivery. Support for single-message mboxes is deprecated and may be removed in the future. Abort (core dumped) Built latest HEAD (bed8b6743) in $HOME/sw/notmuch root@osboxes:~/mail # rm -rf .notmuch/ root@osboxes:~/mail # ~/sw/notmuch/notmuch new Found 2 total files (that's not much mail). Note: Ignoring non-mail file: /root/mail/notmuch.core Processed 2 total files in almost no time. Added 1 new message to the database. root@osboxes:~/mail # OK, what worked :O (statically linked libnotmuch.4). Wat about shared... root@osboxes:~/mail # rm -rf .notmuch/ notmuch.core root@osboxes:~/mail # env LD_LIBRARY_PATH=$HOME/sw/notmuch/lib $HOME/sw/notmuch/notmuch-shared new Found 1 total files (that's not much mail). Abort (core dumped) root@osboxes:~/mail # gdb $HOME/sw/notmuch/notmuch-shared notmuch-shared.core GNU gdb 6.1.1 [FreeBSD] ... Core was generated by `notmuch-shared'. Program terminated with signal 6, Aborted. Reading symbols from /root/sw/notmuch/lib/libnotmuch.so.4...done. ... [New Thread 804406400 (LWP 100071/notmuch-shared)] (gdb) bt #0 0x00000008018d46ca in thr_kill () from /lib/libc.so.7 #1 0x00000008019a9149 in abort () from /lib/libc.so.7 #2 0x00000008022e242d in __cxa_rethrow () from /lib/libcxxrt.so.1 #3 0x0000000801c5d7d6 in Xapian::Document::Internal::remove_term () from /usr/local/lib/libxapian.so.22 #4 0x00000008008500bc in _notmuch_message_remove_term (message=0x804468780, prefix_name=0x800858414 "tag", value=<value optimized out>) at message.cc:1146 #5 0x000000080085158f in notmuch_message_remove_tag (message=0x804468780, tag=0x800859167 "draft") at message.cc:1205 #6 0x0000000800851795 in notmuch_message_maildir_flags_to_tags ( message=<value optimized out>) at message.cc:1312 #7 0x000000000040d9e5 in add_files (notmuch=0x8044542a0, path=0x80445a3b0 "/root/mail/new", state=0x7fffffffe8b0) at notmuch-new.c:272 #8 0x000000000040d448 in add_files (notmuch=0x8044542a0, path=0x804459fc0 "/root/mail", state=0x7fffffffe8b0) at notmuch-new.c:477 #9 0x000000000040c85f in notmuch_new_command (config=0x804468160, argc=<value optimized out>, argv=<value optimized out>) at notmuch-new.c:1070 #10 0x0000000000408a23 in main (argc=<value optimized out>, argv=0x7fffffffeb18) at notmuch.c:353 Due to just quick testing forgot my suggestion for CFLAGS... so... 143 7:27 cd 144 7:27 cd sw/notmuch 145 7:27 make distclean 146 7:28 gmake distclean 147 7:28 env CFLAGS='-ggdb -O0' ./configure 148 7:28 make 149 7:28 gmake 151 7:29 cd 152 7:29 cd mail/ 153 7:29 ls 154 7:29 rm notmuch-shared.core 155 7:29 env LD_LIBRARY_PATH=$HOME/sw/notmuch/lib $HOME/sw/notmuch/notmuch-shared new 156 7:29 gdb $HOME/sw/notmuch/notmuch-shared notmuch-shared.core (gdb) bt #0 0x00000008018f26ca in thr_kill () from /lib/libc.so.7 #1 0x00000008019c7149 in abort () from /lib/libc.so.7 #2 0x000000080230042d in __cxa_rethrow () from /lib/libcxxrt.so.1 #3 0x0000000801c7b7d6 in Xapian::Document::Internal::remove_term () from /usr/local/lib/libxapian.so.22 #4 0x00000008008668b3 in _notmuch_message_remove_term (message=0x804468780, prefix_name=0x800874151 "tag", value=0x800874e97 "draft") at message.cc:1146 #5 0x0000000800868f76 in notmuch_message_remove_tag (message=0x804468780, tag=0x800874e97 "draft") at message.cc:1205 #6 0x00000008008691d3 in notmuch_message_maildir_flags_to_tags ( message=0x804468780) at message.cc:1312 #7 0x0000000000411295 in add_file (notmuch=0x8044542a0, filename=0x80445c6e0 "/root/mail/new/new.mail", state=0x7fffffffe8b8) at notmuch-new.c:272 #8 0x00000000004102e2 in add_files (notmuch=0x8044542a0, path=0x80445a3b0 "/root/mail/new", state=0x7fffffffe8b8) at notmuch-new.c:587 #9 0x000000000040fdad in add_files (notmuch=0x8044542a0, path=0x804459fc0 "/root/mail", state=0x7fffffffe8b8) at notmuch-new.c:477 #10 0x000000000040ee81 in notmuch_new_command (config=0x804468160, argc=1, argv=0x7fffffffeb20) at notmuch-new.c:1070 #11 0x0000000000409277 in main (argc=2, argv=0x7fffffffeb18) at notmuch.c:353 Tomi