Error: No CMAKE_CXX_COMPILER could be found.
root@tutorialspots:~/lua-mongo# cmake . -- The C compiler identification is GNU 9.4.0 -- The CXX compiler identification is unknown -- Check for working C compiler: /usr/bin/cc -- Check for working C compiler: /usr/bin/cc -- works -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Detecting C compile features -- Detecting C compile features - done CMake Error at CMakeLists.txt:2 (project): No CMAKE_CXX_COMPILER could be found. Tell CMake where to find the compiler by setting either the environment variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path to the compiler, or to the compiler name if it is in the PATH. -- Configuring incomplete, errors occurred! See also "/root/lua-mongo/CMakeFiles/CMakeOutput.log". See also "/root/lua-mongo/CMakeFiles/CMakeError.log".
Solution:
Install g++
apt-get install g++
root@tutorialspots:~/lua-mongo# apt-get install g++ Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: libsasl2-dev libsnappy-dev Use 'apt autoremove' to remove them. The following additional packages will be installed: g++-9 libstdc++-9-dev Suggested packages: g++-multilib g++-9-multilib gcc-9-doc libstdc++-9-doc The following NEW packages will be installed: g++ g++-9 libstdc++-9-dev 0 upgraded, 3 newly installed, 0 to remove and 45 not upgraded. Need to get 10.1 MB of archives. After this operation, 46.8 MB of additional disk space will be used. Do you want to continue? [Y/n] y Get:1 https://mirror.hetzner.com/ubuntu/packages focal-updates/main amd64 libstdc++-9-dev amd64 9.4.0-1ubuntu1~20.04.1 [1,722 kB] Get:2 https://mirror.hetzner.com/ubuntu/packages focal-updates/main amd64 g++-9 amd64 9.4.0-1ubuntu1~20.04.1 [8,420 kB] Get:3 https://mirror.hetzner.com/ubuntu/packages focal/main amd64 g++ amd64 4:9.3.0-1ubuntu2 [1,604 B] Fetched 10.1 MB in 0s (66.8 MB/s) Selecting previously unselected package libstdc++-9-dev:amd64. (Reading database ... 51398 files and directories currently installed.) Preparing to unpack .../libstdc++-9-dev_9.4.0-1ubuntu1~20.04.1_amd64.deb ... Unpacking libstdc++-9-dev:amd64 (9.4.0-1ubuntu1~20.04.1) ... Selecting previously unselected package g++-9. Preparing to unpack .../g++-9_9.4.0-1ubuntu1~20.04.1_amd64.deb ... Unpacking g++-9 (9.4.0-1ubuntu1~20.04.1) ... Selecting previously unselected package g++. Preparing to unpack .../g++_4%3a9.3.0-1ubuntu2_amd64.deb ... Unpacking g++ (4:9.3.0-1ubuntu2) ... Setting up libstdc++-9-dev:amd64 (9.4.0-1ubuntu1~20.04.1) ... Setting up g++-9 (9.4.0-1ubuntu1~20.04.1) ... Setting up g++ (4:9.3.0-1ubuntu2) ... update-alternatives: using /usr/bin/g++ to provide /usr/bin/c++ (c++) in auto mode Processing triggers for man-db (2.9.1-1) ...
