To use a cmake macro in Ubuntu, you first need to define the macro in your CMakeLists.txt file. This can be done by using the macro() command followed by the name of the macro and its parameters.
Once the macro is defined, you can call it in your CMakeLists.txt file or in any other CMake file by using the call() command followed by the name of the macro and its parameters.
Make sure to include the file where the macro is defined in your CMakeLists.txt file using the include() command.
After including the file and calling the macro, run CMake to generate the build system files for your project. You can do this by running the cmake command in your project directory.
Once CMake has successfully generated the build system files, you can build your project using the generated build system files. This can be done by running the make command in your project directory.
By following these steps, you can easily use a cmake macro in Ubuntu to simplify the build process of your project.
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How to pass arguments to a CMake macro?
To pass arguments to a CMake macro, you can define the macro with parameters and then call the macro with the desired arguments. Here is an example of how to define and call a CMake macro with arguments:
- Define the macro with parameters:
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macro(my_macro ARG1 ARG2) # Use ARG1 and ARG2 in the macro body message("Argument 1: ${ARG1}") message("Argument 2: ${ARG2}") endmacro() |
- Call the macro with arguments:
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my_macro(value1 value2)
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In this example, my_macro is defined with two parameters ARG1 and ARG2, and it simply prints out the values of these arguments using the message command. When calling the macro, you pass values value1 and value2 as arguments, which will be printed by the macro.
You can pass as many arguments as needed to a CMake macro, and the macro can perform any actions using these arguments within its body.
How to include a CMake macro in a project?
To include a CMake macro in a project, follow these steps:
- Define the macro in a separate CMake file, such as MyMacro.cmake, using the macro() command. For example:
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macro(MyMacro ARG1 ARG2) message("MyMacro called with arguments ${ARG1} and ${ARG2}") endmacro() |
- Include the CMake file containing the macro in your main CMakeLists.txt file using the include() command. For example:
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include(MyMacro.cmake)
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- Call the macro in your CMakeLists.txt file or any other CMake file in your project using the MyMacro() command. For example:
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MyMacro("arg1" "arg2")
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- When you run CMake to generate the build files for your project, the macro will be executed as part of the CMake configuration process.
That's it! You have now included a CMake macro in your project.
What is the best practice for naming conventions in CMake macros?
The best practice for naming conventions in CMake macros is to use lowercase letters with underscores separating words. This helps to make the macro names more readable and consistent with CMake's own naming conventions.
For example:
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macro(my_cool_macro) # Macro implementation endmacro() |
Avoid using uppercase letters or camel case in macro names, as this can be confusing and make the code harder to read. Additionally, prefixing macros with a unique identifier related to the project or module they belong to can help avoid naming conflicts with other macros in the CMake build system.
How to create a CMakeLists.txt file?
Creating a CMakeLists.txt file is relatively simple and involves specifying the build configuration, such as compiler settings, linking libraries, and specifying source files. Here is an example of a basic CMakeLists.txt file for a simple C++ project:
- Create a new file named "CMakeLists.txt" in the root directory of your project.
- Add the following content to the file:
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cmake_minimum_required(VERSION 3.10) # Specify the minimum version of CMake required project(MyProject) # Specify the name of your project # Add the executable target add_executable(MyExecutable main.cpp) # Specify the name of your executable and the source files # You can also add additional files or libraries using the following syntax # target_sources(MyExecutable PUBLIC file1.cpp file2.cpp) # target_link_libraries(MyExecutable PUBLIC libraryName) |
- Save the file and configure the project using CMake. You can do this by running the following commands in the terminal (assuming you are in the root directory of your project):
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mkdir build cd build cmake .. |
- After running the configure step, you can then build the project using the generated build files. To do this, run the following command in the terminal:
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cmake --build .
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This will generate the executable file based on the source files specified in the CMakeLists.txt file. You can customize the contents of the CMakeLists.txt file based on the specific requirements of your project.
