C++ Driver libbson-1.0 build error on CentOS 8

Luke_Colias · 2020-12-06T04:32:32.792Z

Thank you for your help, I’ll try to match these to the centOS commands and work at it from there. I added the commands I was using in my last reply.

Roberto_Sanchez · 2020-12-07T21:02:48.706Z

@Luke_Colias it does not make sense that you install the mongo-c-driver and libbson packages via yum and then try to build from source as well. If the packages available via yum are of a sufficiently recent version for you, then simply install the -devel packages of each and be done with it. If you need to build from source, then it is best to not also have the packages installed via yum at the same time. Apart from that, the commands you executed are helpful, but if you note my previous comment we need the full output to be able to effectively diagnose the issue. That said, based on the command sequence for the C driver, it looks like you built it but did not actually install it. You might need something like cmake --build . --target install (possibly with sudo if your installation prefix is in a system directory).

Luke_Colias · 2020-12-07T21:53:33.851Z

Okay I Think I understand more now, how would I install the -devel packages of the c driver and libbson? I get now that I installed them via yum so but I dont fully get the distinction between that and what the -devel package is.

Roberto_Sanchez · 2020-12-07T22:02:38.412Z

@Luke_Colias you should be able to install them with yum install mongo-c-driver-devel libbson-devel.

Luke_Colias · 2020-12-07T22:04:47.761Z

Awesome that worked, so now I should just have to follow the instructions for installing the c++ driver right?

Roberto_Sanchez · 2020-12-07T22:06:19.072Z

That’s right. Just make sure that you select a C++ driver version that supports the C driver version you installed. (I don’t recall what version is available by default from CentOS 8).

Luke_Colias · 2020-12-07T22:09:24.794Z

Okay It says the package that was installed is “(4/5): mongo-c-driver-devel-1.17.2-1.el8.x86_64” so I assume that means i can use the latest version of the c++ driver.

Roberto_Sanchez · 2020-12-07T22:10:28.818Z

That sounds correct to me. The latest C++ driver requires C driver 1.17.0 or later.

Luke_Colias · 2020-12-07T22:18:24.521Z

Okay sweet, I ran the basic Cmake command:

cmake ..                                \
    -DCMAKE_BUILD_TYPE=Release          \
    -DCMAKE_INSTALL_PREFIX=/usr/local

And everything looks good becasue its giving me this message at the end

 Build files have been written to: /root/mongo-cxx-driver-r3.6.2/build

Now when I run the build command do I have to add the mnmlstc core flagg becasue im really not sure about what that is.

(P.S. Also I appreciate all of this so much I was stuck on this forever and you just knocked out like 10 hours of frustration in like 20 min, thank you!)

Roberto_Sanchez · 2020-12-07T22:21:24.429Z

Correct. It is the same as I explained in the other thread. You are quite welcome.

Luke_Colias · 2020-12-07T22:28:22.814Z

Also I’m not really sure what the poly fill is. I know in the other post you said I have two option and those would be to use the compiler that C++17 support for my polyfill(which seems easiert). And the other option would be to download MNMLSTC code from guithub which sounds like more effort and i dont know if i even need it. I was thinking I could just run the command:

cmake --build .
sudo cmake --build . --target install

And this would be sufficent for me to start creating a project.

Roberto_Sanchez · 2020-12-07T22:31:11.223Z

If you don’t want to use the MNMLSTC that the build tries to download and build for you, you will need to specify the option that you prefer. Have a look at Step 2 in the installation guide.

Luke_Colias · 2020-12-07T22:37:04.797Z

Okay from how I understand it, the MNMLSTC core is installed automatically and is the default for non-windows systems.
if I run

sudo cmake --build . --target EP_mnmlstc_core

It will install this for me?

Roberto_Sanchez · 2020-12-07T22:42:51.937Z

The build defaults to downloading MNMLSTC_core from GitHub and using that for the polyfill. However, you do not install it as a specific target. That is handled by the normal building and installation of the overall driver.

Luke_Colias · 2020-12-07T22:51:43.298Z

Okay I accidentially ran that command and it Said that it downloaded it.

[root@instance-1 build]#  sudo cmake --build . --target EP_mnmlstc_core
Scanning dependencies of target EP_mnmlstc_core
[  0%] Creating directories for 'EP_mnmlstc_core'
[  0%] Performing download step (git clone) for 'EP_mnmlstc_core'
-- EP_mnmlstc_core download command succeeded.  See also /root/mongo-cxx-driver-                                                                                                                                                                                               r3.6.2/build/src/bsoncxx/third_party/EP_mnmlstc_core-prefix/src/EP_mnmlstc_core-                                                                                                                                                                                               stamp/EP_mnmlstc_core-download-*.log
[  0%] No patch step for 'EP_mnmlstc_core'
[ 50%] No update step for 'EP_mnmlstc_core'
[ 50%] Performing configure step for 'EP_mnmlstc_core'
-- EP_mnmlstc_core configure command succeeded.  See also /root/mongo-cxx-driver                                                                                                                                                                                               -r3.6.2/build/src/bsoncxx/third_party/EP_mnmlstc_core-prefix/src/EP_mnmlstc_core                                                                                                                                                                                               -stamp/EP_mnmlstc_core-configure-*.log
[ 50%] Performing build step for 'EP_mnmlstc_core'
-- EP_mnmlstc_core build command succeeded.  See also /root/mongo-cxx-driver-r3.                                                                                                                                                                                               6.2/build/src/bsoncxx/third_party/EP_mnmlstc_core-prefix/src/EP_mnmlstc_core-sta                                                                                                                                                                                               mp/EP_mnmlstc_core-build-*.log
[ 50%] Performing install step for 'EP_mnmlstc_core'
-- EP_mnmlstc_core install command succeeded.  See also /root/mongo-cxx-driver-r                                                                                                                                                                                               3.6.2/build/src/bsoncxx/third_party/EP_mnmlstc_core-prefix/src/EP_mnmlstc_core-s                                                                                                                                                                                               tamp/EP_mnmlstc_core-install-*.log
[100%] Performing fix-includes step for 'EP_mnmlstc_core'
[100%] Completed 'EP_mnmlstc_core'
[100%] Built target EP_mnmlstc_core
[root@instance-1 build]# cmake --build .
[  2%] Built target EP_mnmlstc_core
Scanning dependencies of target bsoncxx_testing

I think that means im okay to build and install right.

Roberto_Sanchez · 2020-12-07T22:53:16.357Z

Yes, you should be able to continue as normal. The build instructions do not say to run the EP_mnmlstc_core target because not every build will have it. The build figures out if that target is needed based on the CMake options provided and then handles any build and install steps required for that.

Luke_Colias · 2020-12-07T23:10:30.834Z

Okay That makes sense, It looks too be building properly too.

cmake --build .

Is at 91% so I think I just have to install it after its done building and I should be good!

(P.S. If mongoDB has a community input program please tell them that they should give you a raise because this was an actual godsend!)

Luke_Colias · 2020-12-08T01:04:35.027Z

Sorry to bug you again but if you have the time could you take a look at my other post for the error im running into while trying to run my program.

Compilation error for the C++ driver: error while loading shared libraries: libmongocxx.so._noabi: cannot open shared object file: No such file or directory Drivers

I have compiled my code using the command and everything seems to be fine: c++ --std=c++11 tcpserverV2.cpp -o tcpserverV2 -I/usr/local/include/mongocxx/v_noabi \ -I/usr/local/include/libmongoc-1.0 -I/usr/local/include/bsoncxx/v_noabi \ -I/usr/local/include/libbson-1.0 -L/usr/local/lib -lmongocxx -lbsoncxx , but when i try to run ./tcpserverV2 I am greeted with this message: ./tcpserverV2: error while loading shared libraries: libmongocxx.so._noabi: cannot open shared object file: No such f…

Roberto_Sanchez · 2020-12-08T15:16:44.366Z

@Luke_Colias I monitor topics tagged for the C and C++ driver, so I receive notifications of them from the forum. I will take a look and respond in that thread.

system · 2020-12-13T15:22:14.448Z

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