/ usr / bin / ld：找不到-lcassandra

Question

I just installed the C/C++ driver for cassandra and trying to run the simple program from examples directory but

I am not able to resolve this error. /usr/bin/ld: cannot find -lcassandra

---

Here is my cassandra:

root@iWanUbuntu-1:~/connect_cassandra_cpp/cpp-driver/examples/simple# which cassandra
/usr/sbin/cassandra

---

Here is the CMakeLists.txt:

 cmake_minimum_required(VERSION 2.6.4)

 set(PROJECT_NAME_STR cassandra)
 set(PROJECT_LIB_NAME ${PROJECT_NAME_STR})

 set(PROJECT_LIB_NAME_TARGET ${PROJECT_LIB_NAME})

 set(PROJECT_SOURCE_DIR /root/connect_cassandra_cpp/cpp-driver)

 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ".")
 set(PROJECT_EXAMPLE_NAME simple)

 file(GLOB EXAMPLE_SRC_FILES ${PROJECT_SOURCE_DIR}/examples/simple/*.c)

 include_directories(${INCLUDES})

 add_executable(${PROJECT_EXAMPLE_NAME} ${EXAMPLE_SRC_FILES})

 target_link_libraries(${PROJECT_EXAMPLE_NAME} ${PROJECT_LIB_NAME_TARGET} ${CASS_LIBS})

 set_property(TARGET ${PROJECT_EXAMPLE_NAME} APPEND PROPERTY COMPILE_FLAGS ${EXAMPLE_C_FLAGS})

---

Here is auto-generated make file commands:

 root@iWanUbuntu-1:~/connect_cassandra_cpp/cpp-driver/examples/simple# make --just-print

 /usr/bin/cmake -H/root/connect_cassandra_cpp/cpp-driver/examples/simple -B/root/connect_cassandra_cpp/cpp-driver/examples/simple --check-build-system 
CMakeFiles/Makefile.cmake 0

/usr/bin/cmake -E cmake_progress_start /root/connect_cassandra_cpp    /cpp-driver/examples/simple/CMakeFiles /root/connect_cassandra_cpp/cpp-driver/examples/simple/CMakeFiles/progress.marks

make -f CMakeFiles/Makefile2 all

make -f CMakeFiles/simple.dir/build.make CMakeFiles/simple.dir/depend

cd /root/connect_cassandra_cpp/cpp-driver/examples/simple && /usr/bin/cmake -E 

cmake_depends "Unix Makefiles" /root/connect_cassandra_cpp/cpp-driver/examples/simple /root/connect_cassandra_cpp/cpp-driver/examples/simple 
/root/connect_cassandra_cpp/cpp-driver/examples/simple /root/connect_cassandra_cpp/cpp-driver/examples/simple /root/connect_cassandra_cpp/cpp-driver/examples/simple/CMakeFiles/simple.dir/DependInfo.cmake --color=

make -f CMakeFiles/simple.dir/build.make CMakeFiles/simple.dir/build
/usr/bin/cmake -E cmake_echo_color --switch= --red --bold "Linking C executable simple"

/usr/bin/cmake -E cmake_link_script CMakeFiles/simple.dir/link.txt --verbose=

/usr/bin/cmake -E cmake_progress_report /root/connect_cassandra_cpp/cpp-driver/examples/simple/CMakeFiles  1

echo "Built target simple"

/usr/bin/cmake -E cmake_progress_start /root/connect_cassandra_cpp/cpp-driver/examples/simple/CMakeFiles 0
___

Full Error Output:

root@iWanUbuntu-1:~/connect_cassandra_cpp/cpp-driver/examples/simple# make

-- Configuring done

-- Generating done

-- Build files have been written to: /root/connect_cassandra_cpp/cpp-driver/examples/simple

Linking C executable simple

/usr/bin/ld: cannot find -lcassandra

collect2: error: ld returned 1 exit status

CMakeFiles/simple.dir/build.make:85: recipe for target 'simple' failed

make[2]: *** [simple] Error 1

CMakeFiles/Makefile2:60: recipe for target 'CMakeFiles/simple.dir/all' failed

make[1]: *** [CMakeFiles/simple.dir/all] Error 2

Makefile:75: recipe for target 'all' failed

make: *** [all] Error 2enter code here

Edit to the question: Cassandra Installation Output:

    root@iWanUbuntu-1:~# sudo -E apt-get install cassandra
    Reading package lists... Done
    Building dependency tree
    Reading state information... Done
    cassandra is already the newest version.
    The following packages were automatically installed and are no longer required:
    fonts-dejavu-extra libatk-wrapper-java libatk-wrapper-java-jni libgif4 libgnomevfs2-0 libgnomevfs2-common libice-dev libntdb1 libpthread-stubs0-dev libsctp1 libsm-dev libx11-dev libx11-doc libxau-dev libxcb1-dev libxdmcp-dev libxt-dev lksctp-tools python-ntdb tzdata-java x11proto-core-dev x11proto-input dev    x11proto-kb-dev xorg-sgml-doctools xtrans-dev
    Use 'apt-get autoremove' to remove them.
    0 upgraded, 0 newly installed, 0 to remove and 15 not upgraded.

    root@iWanUbuntu-1:~# sudo -E apt-get install cassandra-devel
    Reading package lists... Done
    Building dependency tree
    Reading state information... Done
    E: Unable to locate package cassandra-devel
    root@iWanUbuntu-1:~#

Answer 1

I'm looking at the README of this project and it seems you cloned the Code section https://github.com/datastax/cpp-driver/blob/master/README.md , but you'll need also the executables. Under the executables there is driver and driver-dev, and installing the driver-dev.deb package would get you the 1. header files 2. shared libs, which the compiler can't find. In general your compiler is telling you it can't find libcassandra.so within /usr/lib or usr/lib64 folders. This usually is when you install the driver, but forgot to install the driver-devel package. Here the devel package http://downloads.datastax.com/cpp-driver/ubuntu/ or if you installed cassandra with apt-get with something like

apt-get install cassandra 

try get the devel part with

 apt-get install cassandra-devel

EDIT:

Eventually I've manually compiled and installed the driver from source and then compiled the examples/simple as the other solutions (intalling cassandra-cpp-driver.rpm) did not solved the whole thread. Just do this:

git clone https://github.com/datastax/cpp-driver.git
cd cpp-driver
mkdir build
cd build
cmake ..
make
sudo make install
cd ../examples/simple 
gcc simple.c -L /usr/local/lib64 -l cassandra -I /usr/local/include -o simple.o 

Worked for me. On the other hand you could search for libcassandra.so.(some crazy extension) within /usr/lib64/ and cassandra.h within /usr/include . If there just make a symbolic link /usr/lib64/libcassandra.so to /usr/lib64/libcassandra.so.(some crazy extension) and recompile