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Add _qt_internal_relative_path

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This is a compatibility function for `cmake_path(RELATIVE_PATH)`.
For CMake<3.20 it uses `file(RELATIVE_PATH)` instead

Change-Id: Ibf9ca221c1753bd99dcc1820bffaea28f9bfe5af
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
(cherry picked from commit 334acc2eb3ec0cba702780036c94abdac306864e)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
(cherry picked from commit 54f5a61fbc01ac6b176a3811294aea1aa32ecdba)
This commit is contained in:
Cristian Le 2025-01-10 18:16:00 +01:00
parent 12ebf4a046
commit d002fa52e2
1 changed files with 54 additions and 0 deletions
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54
cmake/QtPublicCMakeHelpers.cmake
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@ -675,3 +675,57 @@ function(_qt_internal_forward_function_args)
set(${arg_FORWARD_OUT_VAR} "${forward_args}" PARENT_SCOPE)
endfunction()
# Compatibility of `cmake_path(RELATIVE_PATH)`
#
# In order to be compatible with `file(RELATIVE_PATH)`, path normalization of the result is
# always performed, with the trailing slash stripped.
#
# Synopsis
#
# _qt_internal_relative_path(<path-var>
# [BASE_DIRECTORY <input>]
# [OUTPUT_VARIABLE <out-var>]
# )
#
# Arguments
#
# `path-var`
# Equivalent to `cmake_path(RELATIVE_PATH <path-var>)`.
#
# `BASE_DIRECTORY`
# Equivalent to `cmake_path(RELATIVE_PATH BASE_DIRECTORY)`.
#
# `OUTPUT_VARIABLE`
# Equivalent to `cmake_path(RELATIVE_PATH OUTPUT_VARIABLE)`.
function(_qt_internal_relative_path path_var)
set(option_args "")
set(single_args
BASE_DIRECTORY
OUTPUT_VARIABLE
)
set(multi_args "")
cmake_parse_arguments(PARSE_ARGV 1 arg "${option_args}" "${single_args}" "${multi_args}")
if(NOT arg_BASE_DIRECTORY)
set(arg_BASE_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
endif()
if(NOT arg_OUTPUT_VARIABLE)
set(arg_OUTPUT_VARIABLE ${path_var})
endif()
if(CMAKE_VERSION VERSION_LESS 3.20)
file(RELATIVE_PATH ${arg_OUTPUT_VARIABLE}
"${arg_BASE_DIRECTORY}"
"${${path_var}}")
else()
cmake_path(RELATIVE_PATH ${path_var}
BASE_DIRECTORY "${arg_BASE_DIRECTORY}"
OUTPUT_VARIABLE ${arg_OUTPUT_VARIABLE}
)
cmake_path(NORMAL_PATH ${arg_OUTPUT_VARIABLE})
string(REGEX REPLACE "/$" "" ${arg_OUTPUT_VARIABLE}
"${${arg_OUTPUT_VARIABLE}}")
endif()
set(${arg_OUTPUT_VARIABLE} "${${arg_OUTPUT_VARIABLE}}" PARENT_SCOPE)
endfunction()