How to Remove A Component From A Result Of 'Find_path' In Cmake?

If you want to remove a specific component from the result of the find_path function in CMake, you can do so by manipulating the varname_FOUND variable that is set after the function call.

For example, if you have a find_path call like this:

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find_path(MY_PATH my_header.h)

After this call, a variable named MY_PATH_FOUND will be set to TRUE if the path was found, and FALSE otherwise. If you want to remove a specific component from this result, you can simply set the MY_PATH_FOUND variable to FALSE using the set command.

For example:

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set(MY_PATH_FOUND FALSE)

This will effectively remove the component from the result of the find_path call. Just make sure to do this before you use the result in your CMake script.

How to specify which component to remove from the find_path result in CMake?

To specify which component to remove from the find_path result in CMake, you can use the HINTS option to provide hints about where to find the component. By providing the hint about the location of the desired component, you can override the default behavior of find_path and remove any unwanted components from the result.

For example, you can use the following syntax to specify which component to remove:

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find_path(MyPath NAMES path1 path2 HINTS "/desired/path")

In this example, MyPath is the variable that will store the result of the find_path command, path1 and path2 are the names of the components to search for, and "/desired/path" is the hint about the desired location of the component. This hint will help CMake to specifically search for the component in the specified location, and as a result, any unwanted components will be removed from the result.

How can I adjust the find_path command to exclude a component in CMake?

To exclude a component from the find_path command in CMake, you can use the "NO_DEFAULT_PATH" option. This option tells CMake to ignore the default search paths for the specified component.

For example, if you want to exclude a component named "ExampleComponent" from the find_path command, you can do so by using the following syntax:

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find_path(ExampleComponent_PATH 
         NAMES ExampleHeader.h 
         NO_DEFAULT_PATH
)

By specifying the "NO_DEFAULT_PATH" option, CMake will only search for the specified component name "ExampleHeader.h" in the paths that you explicitly provide, without considering the default search paths.

How can I modify a find_path result to remove a specific component in CMake?

To modify a find_path result to remove a specific component in CMake, you can use the LIST(REMOVE_ITEM) command to remove the specific component from the list of paths. Here is an example of how you can do this:

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# Find the path to the specific component
find_path(SpecificComponentPath NAMES specificcomponent.h PATHS /path/to/search)
message(STATUS "Specific component path: ${SpecificComponentPath}")

# Remove the specific component from the list
list(REMOVE_ITEM SpecificComponentPath "/path/to/remove")

# Print the modified list after removing the specific component
message(STATUS "Modified specific component path: ${SpecificComponentPath}")

In this example, we first find the path to the specific component using the find_path command. We then use the list(REMOVE_ITEM) command to remove the specific component from the list of paths. Finally, we print the modified list after removing the specific component.

You can modify this example to suit your specific use case and adjust the paths and component names accordingly.

What are the options for excluding a component from the find_path result in CMake?

1. Use the EXCLUDE option in the find_path command. This option allows you to specify one or more directories to exclude from the search. For example:

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find_path(MY_INCLUDE_DIR my_header.h
    PATHS /path/to/directory
    EXCLUDE /path/to/exclude/dir
)

1. Use the PATH_SUFFIXES option in the find_path command. This option allows you to specify a list of directory names to exclude from the search. For example:

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find_path(MY_INCLUDE_DIR my_header.h
    PATHS /path/to/directory
    PATH_SUFFIXES exclude_dir
)

1. Use the NO_DEFAULT_PATH option in the find_path command. This option tells CMake not to search in the default system directories. You can then manually specify the directories to search in using the PATHS option. For example:

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find_path(MY_INCLUDE_DIR my_header.h
    NO_DEFAULT_PATH
    PATHS /path/to/directory
    PATHS /another/path/to/directory
)