Cassandra C ++驱动程序“未定义引用”错误

Question

So I followed the Ubuntu instructions on the Datastax website to build the c++ driver ( http://datastax.github.io/cpp-driver/topics/building/ ).

sudo apt-add-repository ppa:linuxjedi/ppa

sudo apt-get update

sudo apt-get install g++ make cmake libuv-dev libssl-dev

git clone https://github.com/datastax/cpp-driver.git

mkdir cpp-driver/build

cd cpp-driver/build

cmake ..

make

When I try to compile using g++ I get the following error messages: test.cpp:(.text+0x11): undefined reference to cass_cluster_new' test.cpp:(.text+0x1a): undefined reference to cass_session_new' test.cpp:(.text+0x2f): undefined reference to cass_cluster_set_contact_points' test.cpp:(.text+0x42): undefined reference to cass_session_connect' test.cpp:(.text+0x52): undefined reference to cass_future_error_code' test.cpp:(.text+0x76): undefined reference to cass_statement_new' test.cpp:(.text+0x8d): undefined reference to cass_session_execute' test.cpp:(.text+0x9d): undefined reference to cass_future_error_code' test.cpp:(.text+0xb6): undefined reference to cass_future_get_result' test.cpp:(.text+0xc6): undefined reference to cass_iterator_from_result' test.cpp:(.text+0xd8): undefined reference to cass_iterator_get_row' test.cpp:(.text+0xed): undefined reference to cass_row_get_column_by_name' test.cpp:(.text+0x108): undefined reference to cass_value_get_string' test.cpp:(.text+0x12d): undefined reference to cass_value_get_string' test.cpp:(.text+0x12d): undefined reference to cass_iterator_next' test.cpp:(.text+0x142): undefined reference to cass_result_free' test.cpp:(.text+0x14e): undefined reference to cass_iterator_free' test.cpp:(.text+0x167): undefined reference to cass_future_error_message' test.cpp:(.text+0x196): undefined reference to cass_statement_free' test.cpp:(.text+0x1a2): undefined reference to cass_future_free' test.cpp:(.text+0x1ae): undefined reference to cass_session_close' test.cpp:(.text+0x1be): undefined reference to cass_future_wait' test.cpp:(.text+0x1ca): undefined reference to cass_future_free' test.cpp:(.text+0x1e3): undefined reference to cass_future_error_message' test.cpp:(.text+0x212): undefined reference to cass_future_free' test.cpp:(.text+0x21e): undefined reference to cass_cluster_free' test.cpp:(.text+0x22a): undefined reference to cass_session_free' collect2: error: ld returned 1 exit status

What am I missing when trying to compile: g++ test.cpp

Thank you.

Answer 1

You need to actually link to the previously build cassandra driver.

g++ test.cpp -Lcpp-build/build -lcassandra

-L tells g++ where it searches for libraries

-l links the library