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Use REALPATH based check for symbolic links on Windows

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Windows mount points are marked as symbolic links by CMake. So switch
back to the REALPATH based check for Windows hosts.

Amends dcc2704d17bda08e6dc7783559ccbfd864dd4339

Task-number: QTBUG-99416
Change-Id: Ic996db1fac5c0b5edc18728535240e272dd435e0
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
Reviewed-by: David Schulz <david.schulz@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
(cherry picked from commit b13ee89d20013ba4122e5539e9b5a0b65ee3ab6a)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
This commit is contained in:
Alexey Edelev 2022-01-05 12:38:22 +01:00 committed by Qt Cherry-pick Bot
parent 00a1e74522
commit 4f042fafaf
1 changed files with 27 additions and 13 deletions
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40
CMakeLists.txt
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@ -14,21 +14,35 @@ include(.cmake.conf)
# Bail out if any part of the build directory's path is symlinked.
function(qt_internal_check_if_path_has_symlinks path)
get_filename_component(dir "${path}" ABSOLUTE)
while(TRUE)
if(IS_SYMLINK "${dir}")
message(FATAL_ERROR "The path \"${path}\" contains symlinks. \
This is not supported. Possible solutions:
- map directories using a transparent mechanism such as mount --bind
- pass the real path of the build directory to CMake, e.g. using \
cd $(realpath <path>) before invoking cmake <source_dir>.")
set(is_symlink FALSE)
if(CMAKE_HOST_WIN32)
# CMake marks Windows mount points as symbolic links, so use simplified REALPATH check
# on Windows platforms instead of IS_SYMLINK.
get_filename_component(dir_realpath "${dir}" REALPATH)
if(NOT dir STREQUAL dir_realpath)
set(is_symlink TRUE)
endif()
else()
while(TRUE)
if(IS_SYMLINK "${dir}")
set(is_symlink TRUE)
break()
endif()
set(prev_dir "${dir}")
get_filename_component(dir "${dir}" DIRECTORY)
if("${dir}" STREQUAL "${prev_dir}")
return()
endif()
endwhile()
set(prev_dir "${dir}")
get_filename_component(dir "${dir}" DIRECTORY)
if("${dir}" STREQUAL "${prev_dir}")
return()
endif()
endwhile()
endif()
if(is_symlink)
message(FATAL_ERROR "The path \"${path}\" contains symlinks. \
This is not supported. Possible solutions:
- map directories using a transparent mechanism such as mount --bind
- pass the real path of the build directory to CMake, e.g. using \
cd $(realpath <path>) before invoking cmake <source_dir>.")
endif()
endfunction()
qt_internal_check_if_path_has_symlinks("${CMAKE_BINARY_DIR}")