In CMake, the dollar sign ($) is a special character used to escape variables and functions. If you need to include a literal dollar sign in a string, you can escape it by using double dollar signs ($$) or enclosing it in double quotes ("$"). This will prevent CMake from interpreting the dollar sign as a variable or function. Remember to properly escape dollar signs in CMake scripts to avoid any unexpected behavior or errors.
What is the best practice for dealing with $ in cmake?
When dealing with $ in CMake, it is best practice to escape the $ character by using a double $$. This ensures that CMake does not interpret $ as a special character.
For example, if you need to use $ in a string variable, you would write it as:
1
|
set(my_variable "This is a string with a dollar sign: $$")
|
Alternatively, you can use the escape character \ to escape the $ character:
1
|
set(my_variable "This is a string with a dollar sign: \$")
|
By following these best practices, you can avoid any unexpected behavior or errors when working with $ in CMake.
How to mask $ in cmake files?
To mask the $ symbol in CMake files, you can use the escape character \ before the $ symbol. This will prevent CMake from interpreting the $ symbol as a special character.
For example, if you want to include the $HOME variable in a CMake file without it being interpreted, you can do the following:
1 2 |
set(HOME_PATH "$HOME/my_folder") message("Home Path: ${HOME_PATH}") |
By using the curly braces around the variable HOME_PATH, you prevent CMake from interpreting the $ symbol as a special character.
How to escape $ in cmake variables?
To escape the dollar sign ($) in CMake variables, you can simply use double dollar signs ($$). This will prevent CMake from interpreting the following text as a variable.
For example, if you want to use a literal dollar sign in a string, you can do the following:
1 2 |
set(myString "This is a dollar sign: $$") message("myString: ${myString}") |
This will output:
1
|
myString: This is a dollar sign: $
|
By using double dollar signs, you can easily escape dollar signs in CMake variables.
What is the correct way to use $ in cmake?
In CMake, "$" is used to reference variables. Here are some common ways to use "$" in CMake:
- Defining variables:
1
|
set(MY_VARIABLE "value")
|
- Referencing variables:
1
|
message("Value of MY_VARIABLE is ${MY_VARIABLE}")
|
- Performing variable substitution:
1
|
set(SOURCE_DIR "${CMAKE_SOURCE_DIR}/src")
|
- Using generator expressions:
1
|
set(OUTPUT_DIR $<$<CONFIG:Debug>:${CMAKE_BINARY_DIR}/Debug>$<$<NOT:$<CONFIG:Debug>>:${CMAKE_BINARY_DIR}/Release>)
|
Ultimately, the correct way to use "$" in CMake depends on the specific scenario and how you want to manipulate or reference variables in your CMake scripts.
