[GitHub] [rocketmq-client-go] ShannonDing commented on issue #305: [Master] go build fail using static library.

[GitBox <gi...@apache.org>]

ShannonDing commented on issue #305: [Master] go build fail using static library.
URL: https://github.com/apache/rocketmq-client-go/issues/305#issuecomment-559317767
 
 
   > > Hello, @hanzhonghua0927 @zengxiaobai
   > > The Cgo SDK will link the dynamic CPP library as default, and the dependencies such as the zlib are linked dynamically.
   > > if you want to use the CPP static library, the Zlib and libstdc++ libraries need to be linked manually, please follow 3 steps:
   > > 
   > > 1. remove the dynamic library in your LDPATH(default: /usr/local/lib)
   > > 2. change the LDFLAGs in the go SDK from "cgo LDFLAGS: -L/usr/local/lib -lrocketmq" to "cgo LDFLAGS: -L/usr/local/lib -lz -l stdc++ -lrocketmq"
   > > 3. build your project directly without any building flags.
   > > 
   > > please have a try.
   > 
   > I try like this:
   > step1: remove librocketmq.so from /usr/local/lib, mv librocketmq.a to /usr/local/lib/
   > step2: install zlib-static libstdc++-static
   > step3: copy libz.a libstdc++.a to /usr/local/lib
   > step4: change core/producer.go core/message.go core/cfuns.go core/pull_consumer.go core/push_consumer.go FROM
   > #cgo LDFLAGS: -L /usr/local/lib/ -lrocketmq TO
   > -L/usr/local/lib/ -lrocketmq -lz -lstdc++ (-lrocketmq)
   > step5: go build
   > 
   > ERRORS:
   > 
   > ```
   > /usr/local/lib/librocketmq.a(global_logger_storage.o):global_logger_storage.cpp:(.text+0x238): more undefined references to `std::string::_Rep::_M_dispose(std::allocator<char> const&)' follow
   > /usr/local/lib/librocketmq.a(global_logger_storage.o): In function `boost::log::v2s_mt_posix::sources::aux::global_storage::get_or_init(std::type_info const&, boost::shared_ptr<boost::log::v2s_mt_posix::sources::aux::logger_holder_base> (*)())':
   > global_logger_storage.cpp:(.text+0x678): undefined reference to `__cxa_guard_acquire'
   > global_logger_storage.cpp:(.text+0x6d7): undefined reference to `__cxa_guard_release'
   > global_logger_storage.cpp:(.text+0x802): undefined reference to `operator new(unsigned long)'
   > global_logger_storage.cpp:(.text+0x845): undefined reference to `std::_Rb_tree_insert_and_rebalance(bool, std::_Rb_tree_node_base*, std::_Rb_tree_node_base*, std::_Rb_tree_node_base&)'
   > global_logger_storage.cpp:(.text+0x933): undefined reference to `__cxa_guard_acquire'
   > global_logger_storage.cpp:(.text+0x992): undefined reference to `__cxa_guard_release'
   > global_logger_storage.cpp:(.text+0xb23): undefined reference to `__cxa_guard_abort'
   > global_logger_storage.cpp:(.text+0xba8): undefined reference to `__cxa_guard_abort'
   > /usr/local/lib/librocketmq.a(global_logger_storage.o): In function `boost::log::v2s_mt_posix::type_info_wrapper::pretty_name() const':
   > global_logger_storage.cpp:(.text._ZNK5boost3log12v2s_mt_posix17type_info_wrapper11pretty_nameEv[_ZNK5boost3log12v2s_mt_posix17type_info_wrapper11pretty_nameEv]+0x62): undefined reference to `__cxa_demangle'
   > ```
   Hello,
   I think this error occurs caused by depency tree error in g++ link, "-lstdc++" should be linked before "-lrocketmq", KEEP "cgo LDFLAGS: -L/usr/local/lib **-lz -lstdc++ -lrocketmq**"
   Could you please share your g++ version and try it again?

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