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How to Include Header Files In External Library In Cmake?

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In CMake, you can include header files from external libraries by specifying the include directories in your CMakeLists.txt file. This can be done by using the include_directories() command with the path to the directory containing the header files.


For example, if you have an external library located in external_library/include, you can include the header files in your project by adding the following line to your CMakeLists.txt file:

1

include_directories(external_library/include)


This will allow CMake to find and include the header files from the external library when compiling your project. Additionally, you may need to link the library itself using the target_link_libraries() command to ensure that the library is linked correctly at build time.


What is the cmake_install_config_name in CMake?

The cmake_install_config_name variable in CMake is used to specify the configuration that should be used when installing a project. It allows you to control which build configuration (e.g. Debug, Release) will be installed when you run the install target. By default, this variable is set to the same value as the CMAKE_BUILD_TYPE variable, but you can override it to install a different configuration if needed.


What is the cmake_install_prefix in CMake?

The CMAKE_INSTALL_PREFIX in CMake is a variable that specifies the base directory for installing files. When you run the make install command after building a project with CMake, the installed files will be placed in subdirectories under this prefix. By default, the value of CMAKE_INSTALL_PREFIX is set to /usr/local, but it can be changed to a different path if desired. This allows you to customize where the project files will be installed on your system.


What is the difference between CMakeLists.txt and Makefile?

CMakeLists.txt is used with CMake, a cross-platform build system generator. CMakeLists.txt is a script that defines how the project should be built and specifies the project's source files, dependencies, and compilation options. CMake generates platform-specific build files (such as Makefiles) based on the instructions in the CMakeLists.txt file.


A Makefile, on the other hand, is a script containing a set of rules for building a project using the make build automation tool. Makefiles specify dependencies between source files and target files, as well as the commands needed to compile and link the project. Makefiles are generally platform-specific and need to be manually configured for each platform.


In summary, CMakeLists.txt is used with CMake to generate platform-specific build files, while a Makefile is a script containing build rules for use with the make build tool.

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