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How to Find Folder With Pattern In Cmake?

5 minutes read

In CMake, you can use the file(GLOB) command to find folders matching a specific pattern. This command allows you to search for directories or files that match a given pattern using wildcard characters like * and ?. For example, to find all folders beginning with "my_folder", you can use the following command:


file(GLOB folders_matching_pattern "my_folder*")


This will store the list of folders matching the pattern in the variable folders_matching_pattern, which you can then use in your CMake script. It is important to note that using the file(GLOB) command can have performance implications so it is recommended to use it cautiously, especially when dealing with a large number of folders or files.


How to locate directories with a certain naming structure in CMake?

You can use the GLOB command in CMake to locate directories with a certain naming structure.


For example, if you want to find all directories that start with "example_" in a specific directory, you can use the following command:

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file(GLOB EXAMPLE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}/example_*)


This will create a list called EXAMPLE_DIRS containing all directories that match the specified naming structure. You can then use this list in other CMake commands or scripts to perform actions on these directories.


Keep in mind that using GLOB to find directories or files can be less reliable compared to explicitly listing them, as CMake does not automatically rescan the directories if new directories are added. It is also important to consider the potential performance implications of using GLOB on large directories with many files.


What is the recommended technique for finding folders with a specific format in CMake?

One recommended technique for finding folders with a specific format in CMake is to use the GLOB command. This command allows you to create a list of file or folder paths that match a specific pattern or format.


Here's an example of how you can use the GLOB command to find folders with a specific format in CMake:

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# Find all folders that match the format "prefix-*"
file(GLOB FOLDERS "${CMAKE_SOURCE_DIR}/prefix-*")

# Print out the list of folders found
foreach(folder IN LISTS FOLDERS)
    message("Found folder: ${folder}")
endforeach()


In this example, the file(GLOB FOLDERS ...) command is used to find all folders in the CMAKE_SOURCE_DIR directory that match the format "prefix-*". The resulting list of folders is stored in the FOLDERS variable, which is then printed out using a foreach loop.


By using the GLOB command in combination with a specific pattern or format, you can easily find folders that match a certain criteria in CMake.


What is the correct syntax for finding a folder with a specific naming convention in CMake?

To find a folder with a specific naming convention in CMake, you can use the FIND_PATH command with the PATHS option. Here is an example of the syntax:

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FIND_PATH(MY_FOLDER_PATH
    NAMES my_folder
    PATHS /path/to/search
)

IF(NOT MY_FOLDER_PATH)
    MESSAGE(FATAL_ERROR "Folder not found")
ENDIF()

MESSAGE("Found folder at: ${MY_FOLDER_PATH}")


In this example, the FIND_PATH command searches for a folder named my_folder in the specified path /path/to/search. The MY_FOLDER_PATH variable will contain the path to the found folder, if it exists. If the folder is not found, a fatal error message is displayed.


What is the most effective method for searching for folders with a particular naming scheme in CMake?

One effective method for searching for folders with a particular naming scheme in CMake is to use the file(GLOB) command. This command allows you to specify a pattern or regular expression to match against folder names.


For example, if you want to search for folders that start with "prefix_" in a given directory, you can use the following CMake code snippet:

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file(GLOB folder_list RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/prefix_*)


This code snippet will create a list of folders in the current source directory that start with "prefix_". You can then iterate over this list and perform additional operations as needed.


It's important to note that using the file(GLOB) command for searching folders is not without its limitations, as it can have performance implications for large projects or when working with a large number of files. In such cases, it may be more efficient to manually specify the folders that match the naming scheme.


How to automate the process of searching for folders with a pattern in CMake using scripts or macros?

One way to automate the process of searching for folders with a pattern in CMake is to use the file(GLOB ...) command in combination with a CMake script or macro. Here is an example of how you can create a script or macro to search for folders with a specific pattern:

  1. Create a CMake script or macro that takes the pattern for folder names as an argument:
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# Define a macro that takes the pattern as an argument
macro(FIND_FOLDERS_WITH_PATTERN PATTERN RESULT_VAR)
    file(GLOB ${RESULT_VAR} "${CMAKE_SOURCE_DIR}/${PATTERN}")
endmacro()


  1. Use the script or macro in your CMakeLists.txt file to search for folders with a specific pattern:
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# Use the macro to find folders with a specific pattern
FIND_FOLDERS_WITH_PATTERN("folder_*" MY_FOLDERS)


  1. You can then use the resulting variable MY_FOLDERS in your CMakeLists.txt file to iterate over the found folders and perform any necessary actions.


This approach allows you to easily search for folders with a specific pattern in your CMake project and automate the process using scripts or macros.


How to identify directories based on a particular pattern in CMake?

To identify directories based on a particular pattern in CMake, you can use the GLOB command to generate a list of directories that match the pattern. Here's an example of how you can do this:

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# Set the directory pattern
set(PATTERN "pattern_to_match*")

# Use the GLOB command to find directories that match the pattern
file(GLOB DIRECTORY_LIST RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} ${PATTERN})

# Iterate through the list of directories and print them
foreach(DIRECTORY ${DIRECTORY_LIST})
    message("Found directory: ${DIRECTORY}")
endforeach()


In this example, replace "pattern_to_match*" with the desired pattern that you want to match. The GLOB command will search for directories in the current source directory that match the specified pattern and store them in the DIRECTORY_LIST variable. You can then iterate through the list of directories and perform any necessary actions based on them.

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