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How to Get Static Library Default By Cmake?

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To get a static library as the default output by CMake, you can specify the target type as STATIC when declaring your library using the add_library() command in your CMakeLists.txt file. This will instruct CMake to generate a static library as the default output when building your project. Additionally, make sure to link the static library to any executables or other targets in your project that depend on it.


How to set the default behavior for creating static libraries in CMake?

To set the default behavior for creating static libraries in CMake, you can use the add_library command with the STATIC option. Here's an example of how you can set the default behavior for creating static libraries in your CMakeLists.txt file:

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# Set the default behavior for creating static libraries
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)

# Create a static library
add_library(my_static_library STATIC 
    src/file1.cpp
    src/file2.cpp
)


In the example above, we first set the output directories for the static library using the CMAKE_ARCHIVE_OUTPUT_DIRECTORY, CMAKE_LIBRARY_OUTPUT_DIRECTORY, and CMAKE_RUNTIME_OUTPUT_DIRECTORY variables. This ensures that the static library files are placed in the specified directories.


Next, we use the add_library command with the STATIC option to create a static library named my_static_library. We list the source files that are included in the static library as arguments to the add_library command.


By following these steps, you can set the default behavior for creating static libraries in CMake and ensure that the static library files are generated in the desired output directories.


How to specify the visibility of symbols in a static library built by CMake?

To specify the visibility of symbols in a static library built by CMake, you can use the CMAKE_VISIBILITY_INLINES_HIDDEN and VISIBILITY_DEFAULT target properties. Here's how you can do it:

  1. Use the CMAKE_VISIBILITY_INLINES_HIDDEN variable to control the visibility of inline function definitions in the library. Set it to TRUE to hide inline functions by default.
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set(CMAKE_VISIBILITY_INLINES_HIDDEN TRUE)


  1. Use the VISIBILITY_DEFAULT target property to set the default visibility for symbols in the library. You can set it to hidden, protected, or default.
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set_property(TARGET your_library_name PROPERTY VISIBILITY_DEFAULT hidden)


By using these properties, you can control the visibility of symbols in your static library built by CMake.


How to enable verbose output for building static libraries in CMake?

To enable verbose output for building static libraries in CMake, you can set the CMAKE_VERBOSE_MAKEFILE variable to ON before invoking the cmake command. This will generate more verbose output during the build process.


Here's an example of enabling verbose output for building static libraries in CMake:

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cmake -DCMAKE_VERBOSE_MAKEFILE=ON <path_to_source>
make


This will provide detailed information about each step of the build process for static libraries in CMake.

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