Make stageĪfter the configure stage completes successfully, a Makefile is created in the build directory. The build output and error files are located within the build directory at. To see the full CMake variable list, enter cmake -help-variable-list. To change the content of the CMake cache variables in this file, use the -D option after the cmake command. Running the cmake command produces a configure file CMakeCache.txt. To change the location of the install directory from the default /usr/local to your home directory, use an option like -DCMAKE_INSTALL_PREFIX=/home1/$USER/software Creating line breaks in this way improves readability. This means that everything before the \ character is actually a single command. The \ character (as seen above) will continue a command on the next line. You can use the following template command for your CMake builds: CC=gcc CXX=g++ FC=gfortran \ CFLAGS=-march=x86-64-v3 CXXFLAGS=-march=x86-64-v3 FFLAGS=-march=x86-64-v3 \ cmake -DCMAKE_INSTALL_PREFIX=/home1/$USER/software. Note: If a compiler is not specified, CMake will default to using /usr/bin/ which will not be compatible with the rest of the loaded software stack. On CARC systems, you will usually need to specify the compilers to use for the build and the final installation path. Run the cmake command with appropriate options from within the build directory. It also stores several other files, including its cache. The compiler's output will be stored in the build directory, which includes both object files as well as final executables and libraries. The build directory is typically created in the root directory of the software project. If something goes wrong, the build directory can be deleted and recreated without impacting the original source code. It is best practice to create and use a build directory in order to keep the original source code clean (i.e., out-of-source builds). On CARC systems, you may need to specify include file and library paths for dependent software used during the build or for linking libraries to executables. It provides options to customize the build process and specify paths to dependent software. When invoked during the configure stage, CMake parses these text files and generates a native build chain for the desired platform and compiler. make make install Configure stageĬMake build behavior for a software project is described in plain-text files, traditionally named CMakeLists.txt. Build processĪ CMake build sequence on CARC systems looks something like the following: module purge module load gcc/11.3.0 cmake/3.23.2 mkdir build cd build CC=gcc CXX=g++ FC=gfortran \ CFLAGS=-march=x86-64-v3 CXXFLAGS=-march=x86-64-v3 FFLAGS=-march=x86-64-v3 \ cmake -DCMAKE_INSTALL_PREFIX=/path/to/install. If you require a different version of CMake that is not currently installed on CARC systems, please submit a help ticket and we will install it for you. To see all available versions of CMake, enter: module spider cmake Other versions of CMake are available and may require different dependency modules. To use CMake, first load a corresponding module: module purge module load gcc/11.3.0 cmake/3.23.2 You can find instructions for this in the Getting Started with Discovery or Getting Started with Endeavour user guides. Using CMake on CARC systemsīegin by logging in. CMake is an open-source, cross-platform family of tools for building, testing, and packaging software.
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