Here is the command I ran manually which succeeded:

/usr/bin/c++   -O2 -g -DNDEBUG    CMakeFiles/bts_wallet.dir/main.cpp.o CMakeFiles/bts_wallet.dir/chain_connection.cpp.o  -o bts_wallet -rdynamic ../libbshare.a -lrt -lreadline -ldl ../fc/libfc.a ../fc/vendor/easylzma/src/libeasylzma_static.a -Wl,-Bstatic -lboost_thread-mt -lboost_date_time-mt -lboost_system-mt -lboost_filesystem-mt -lboost_program_options-mt -lboost_signals-mt -lboost_serialization-mt -lboost_chrono-mt -lboost_unit_test_framework-mt -lboost_context-mt -lboost_coroutine -lssl -lcrypto ../vendor/miniupnp/miniupnpc/libminiupnpc.a ../vendor/leveldb-1.12.0/libleveldb.a -Wl,-Bdynamic -lpthread -ldb_cxx -lz -ldl

Note that there is an "-ldl" early in the command (presumably from the ${CMAKE_DL_LIBS} in CMakeLists.txt) and that I had to add "-ldl" again at the end.

Need to get this to happen using only CMakeLists.txt

OK... I had previously added pthread to several CMakeLists.txt files but I wanted to narrow it down, so I removed them all and added them back one by one.

It turns out the only change needed to get past the "undefined reference to `pthread_once'" error was to add the line:

    target_link_libraries( leveldb pthread )

to the end of "BitShares/vendor/leveldb-1.12.0/CMakeLists.txt"

(Previously there was no target_link_libraries at all in that file)

I tried both beginning and ending and i'm still getting the same problem.

I also ran: make VERBOSE=1 to capture the command that caused the errors:

/usr/bin/c++   -O2 -g -DNDEBUG    CMakeFiles/bts_server.dir/server.cpp.o CMakeFiles/bts_server.dir/chain_connection.cpp.o CMakeFiles/bts_server.dir/chain_server.cpp.o  -o bts_server -rdynamic ../libbshare.a -lrt -ldl ../fc/libfc.a ../fc/vendor/easylzma/src/libeasylzma_static.a -Wl,-Bstatic -lboost_thread-mt -lboost_date_time-mt -lboost_system-mt -lboost_filesystem-mt -lboost_program_options-mt -lboost_signals-mt -lboost_serialization-mt -lboost_chrono-mt -lboost_unit_test_framework-mt -lboost_context-mt -lboost_coroutine -lssl -lcrypto ../vendor/miniupnp/miniupnpc/libminiupnpc.a ../vendor/leveldb-1.12.0/libleveldb.a -Wl,-Bdynamic -ldb_cxx -lz

but the command doesn't even have -lpthread in it, so it doesn't seem like my changing the CMakeLists.txt  had any effect.  I even tried adding -lpthread to the command manually (both at the beginning and end) and that didn't help... still the same error

I ended up building cmake from source today to get around that.

I followed the build instructions.

When I run: make

I get:

../vendor/leveldb-1.12.0/libleveldb.a(port_posix.cc.o): In function `leveldb::port::InitOnce(int*, void (*)())':
/home/tzadik/BitShares/vendor/leveldb-1.12.0/port/port_posix.cc:50: undefined reference to `pthread_once'

Hi all... I'm a new dev just getting started on BitShares.  I have the code built and am running bts_server.  I also ran bts_wallet and created an address (Egn3ggkuVw4D2fMVaKw7iesCFmT).   Can someone send me some test shares?