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Merge pull request #6744 from gilles-peskine-arm/windows-different-drives-build-error-2.28

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Backport 2.28: Copy files instead of hard-linking on Windows
This commit is contained in:
Manuel Pégourié-Gonnard
2022-12-12 11:59:06 +01:00
committed by GitHub
parent df86cef899 29cf15dfbc
commit 08f7f0d1f6
2 changed files with 20 additions and 20 deletions
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37
CMakeLists.txt
View File

@@ -137,35 +137,32 @@ endif()
# Create a symbolic link from ${base_name} in the binary directory
# to the corresponding path in the source directory.
# Note: Copies the file(s) on Windows.
function(link_to_source base_name)
# Get OS dependent path to use in `execute_process`
if (CMAKE_HOST_WIN32)
#mklink is an internal command of cmd.exe it can only work with \
string(REPLACE "/" "\\" link "${CMAKE_CURRENT_BINARY_DIR}/${base_name}")
string(REPLACE "/" "\\" target "${CMAKE_CURRENT_SOURCE_DIR}/${base_name}")
else()
set(link "${CMAKE_CURRENT_BINARY_DIR}/${base_name}")
set(target "${CMAKE_CURRENT_SOURCE_DIR}/${base_name}")
endif()
set(link "${CMAKE_CURRENT_BINARY_DIR}/${base_name}")
set(target "${CMAKE_CURRENT_SOURCE_DIR}/${base_name}")
if (NOT EXISTS ${link})
if (CMAKE_HOST_UNIX)
set(command ln -s ${target} ${link})
execute_process(COMMAND ln -s ${target} ${link}
RESULT_VARIABLE result
ERROR_VARIABLE output)
if (NOT ${result} EQUAL 0)
message(FATAL_ERROR "Could not create symbolic link for: ${target} --> ${output}")
endif()
else()
if (IS_DIRECTORY ${target})
set(command cmd.exe /c mklink /j ${link} ${target})
file(GLOB_RECURSE files FOLLOW_SYMLINKS RELATIVE ${target} "${target}/*")
foreach(file IN LISTS files)
if(NOT IS_DIRECTORY "${target}/${file}")
configure_file("${target}/${file}" "${link}/${file}" COPYONLY)
endif()
endforeach(file)
else()
set(command cmd.exe /c mklink /h ${link} ${target})
configure_file(${target} ${link} COPYONLY)
endif()
endif()
execute_process(COMMAND ${command}
RESULT_VARIABLE result
ERROR_VARIABLE output)
if (NOT ${result} EQUAL 0)
message(FATAL_ERROR "Could not create symbolic link for: ${target} --> ${output}")
endif()
endif()
endfunction(link_to_source)

3
ChangeLog.d/fix_hard_link_across_drives Normal file
View File

@@ -0,0 +1,3 @@
Bugfix
* Fix a build issue on Windows where the source and build directory could not be on
different drives (#5751).