[C++] Path processing on different platforms

[MonicaLiu0311]

Describe the bug, including details regarding any error messages, version, and platform.

This is a copy of microsoft/vcpkg#35242. Maybe the path needs to be processed:

Change Dir: 'G:/v/b1/arrow/x64-windows-dbg'

Run Build Command(s): "C:/Program Files/Microsoft Visual Studio/2022/Community/Common7/IDE/CommonExtensions/Microsoft/CMake/Ninja/ninja.exe" -v -v -j31 install
[1/193] cmd.exe /C "cd /D G:\v\b1\arrow\x64-windows-dbg && G:\v\downloads\tools\cmake-3.27.1-windows\cmake-3.27.1-windows-i386\bin\cmake.exe -Dcfgdir= -P G:/v/b1/arrow/x64-windows-dbg/mimalloc_ep-prefix/tmp/mimalloc_ep-mkdirs.cmake && G:\v\downloads\tools\cmake-3.27.1-windows\cmake-3.27.1-windows-i386\bin\cmake.exe -E touch G:/v/b1/arrow/x64-windows-dbg/mimalloc_ep-prefix/src/mimalloc_ep-stamp/mimalloc_ep-mkdir"
[2/193] cmd.exe /C "cd /D G:\v\b1\arrow\x64-windows-dbg\mimalloc_ep-prefix\src && G:\v\downloads\tools\cmake-3.27.1-windows\cmake-3.27.1-windows-i386\bin\cmake.exe -P G:/v/b1/arrow/x64-windows-dbg/mimalloc_ep-prefix/src/mimalloc_ep-stamp/mimalloc_ep-download-DEBUG.cmake && G:\v\downloads\tools\cmake-3.27.1-windows\cmake-3.27.1-windows-i386\bin\cmake.exe -E touch G:/v/b1/arrow/x64-windows-dbg/mimalloc_ep-prefix/src/mimalloc_ep-stamp/mimalloc_ep-download"
[3/193] cmd.exe /C "cd /D G:\v\b1\arrow\x64-windows-dbg && G:\v\downloads\tools\cmake-3.27.1-windows\cmake-3.27.1-windows-i386\bin\cmake.exe -E echo_append && G:\v\downloads\tools\cmake-3.27.1-windows\cmake-3.27.1-windows-i386\bin\cmake.exe -E touch G:/v/b1/arrow/x64-windows-dbg/mimalloc_ep-prefix/src/mimalloc_ep-stamp/mimalloc_ep-update"
[4/193] cmd.exe /C "cd /D G:\v\b1\arrow\x64-windows-dbg && G:\v\downloads\tools\cmake-3.27.1-windows\cmake-3.27.1-windows-i386\bin\cmake.exe -E echo_append && G:\v\downloads\tools\cmake-3.27.1-windows\cmake-3.27.1-windows-i386\bin\cmake.exe -E touch G:/v/b1/arrow/x64-windows-dbg/mimalloc_ep-prefix/src/mimalloc_ep-stamp/mimalloc_ep-patch"
[5/193] cmd.exe /C "cd /D G:\v\b1\arrow\x64-windows-dbg\mimalloc_ep-prefix\src\mimalloc_ep-build && G:\v\downloads\tools\cmake-3.27.1-windows\cmake-3.27.1-windows-i386\bin\cmake.exe -P G:/v/b1/arrow/x64-windows-dbg/mimalloc_ep-prefix/src/mimalloc_ep-stamp/mimalloc_ep-configure-DEBUG.cmake && G:\v\downloads\tools\cmake-3.27.1-windows\cmake-3.27.1-windows-i386\bin\cmake.exe -E touch G:/v/b1/arrow/x64-windows-dbg/mimalloc_ep-prefix/src/mimalloc_ep-stamp/mimalloc_ep-configure"
FAILED: mimalloc_ep-prefix/src/mimalloc_ep-stamp/mimalloc_ep-configure G:/v/b1/arrow/x64-windows-dbg/mimalloc_ep-prefix/src/mimalloc_ep-stamp/mimalloc_ep-configure 
cmd.exe /C "cd /D G:\v\b1\arrow\x64-windows-dbg\mimalloc_ep-prefix\src\mimalloc_ep-build && G:\v\downloads\tools\cmake-3.27.1-windows\cmake-3.27.1-windows-i386\bin\cmake.exe -P G:/v/b1/arrow/x64-windows-dbg/mimalloc_ep-prefix/src/mimalloc_ep-stamp/mimalloc_ep-configure-DEBUG.cmake && G:\v\downloads\tools\cmake-3.27.1-windows\cmake-3.27.1-windows-i386\bin\cmake.exe -E touch G:/v/b1/arrow/x64-windows-dbg/mimalloc_ep-prefix/src/mimalloc_ep-stamp/mimalloc_ep-configure"
CMake Error at G:/v/b1/arrow/x64-windows-dbg/mimalloc_ep-prefix/src/mimalloc_ep-stamp/mimalloc_ep-configure-DEBUG.cmake:4 (set):
  Syntax error in cmake code at

    G:/v/b1/arrow/x64-windows-dbg/mimalloc_ep-prefix/src/mimalloc_ep-stamp/mimalloc_ep-configure-DEBUG.cmake:4

  when parsing string

    G:/v/downloads/tools/cmake-3.27.1-windows/cmake-3.27.1-windows-i386/bin/cmake.exe;-DCMAKE_C_COMPILER=C:/Program Files/Microsoft Visual Studio/2022/Community/VC/Tools/MSVC/14.37.32822/bin/Hostx64/x64/cl.exe;-DCMAKE_CXX_COMPILER=C:/Program Files/Microsoft Visual Studio/2022/Community/VC/Tools/MSVC/14.37.32822/bin/Hostx64/x64/cl.exe;-DCMAKE_AR=C:/Program Files/Microsoft Visual Studio/2022/Community/VC/Tools/MSVC/14.37.32822/bin/Hostx64/x64/lib.exe;-DBUILD_SHARED_LIBS=OFF;-DBUILD_STATIC_LIBS=ON;-DBUILD_TESTING=OFF;-DCMAKE_BUILD_TYPE=DEBUG;-DCMAKE_CXX_FLAGS= /nologo /DWIN32 /D_WINDOWS  /utf-8 /GR /EHsc /MP  /D_SILENCE_TR1_NAMESPACE_DEPRECATION_WARNING;-DCMAKE_CXX_FLAGS_DEBUG=/D_DEBUG /MDd /Z7 /Ob0 /Od /RTC1  -MDd;-DCMAKE_CXX_FLAGS_MISIZEREL=/O1 /Ob1 /DNDEBUG -MD;-DCMAKE_CXX_FLAGS_RELEASE=/MD /O2 /Oi /Gy /DNDEBUG /Z7  -MD;-DCMAKE_CXX_FLAGS_RELWITHDEBINFO=/Z7 /O2 /Ob1 /DNDEBUG -MD;-DCMAKE_CXX_STANDARD=17;-DCMAKE_C_FLAGS= /nologo /DWIN32 /D_WINDOWS /W3 /utf-8 /MP ;-DCMAKE_C_FLAGS_DEBUG=/D_DEBUG /MDd /Z7 /Ob0 /Od /RTC1  -MDd;-DCMAKE_C_FLAGS_MISIZEREL=/O1 /Ob1 /DNDEBUG -MD;-DCMAKE_C_FLAGS_RELEASE=/MD /O2 /Oi /Gy /DNDEBUG /Z7  -MD;-DCMAKE_C_FLAGS_RELWITHDEBINFO=/Z7 /O2 /Ob1 /DNDEBUG -MD;-DCMAKE_EXPORT_NO_PACKAGE_REGISTRY=ON;-DCMAKE_FIND_PACKAGE_NO_PACKAGE_REGISTRY=ON;-DCMAKE_INSTALL_LIBDIR=lib;-DCMAKE_OSX_SYSROOT=;-DCMAKE_VERBOSE_MAKEFILE=ON;-DCMAKE_C_COMPILER_LAUNCHER=C:\Users\admin\git_projects\ccache.exe;-DCMAKE_CXX_COMPILER_LAUNCHER=C:\Users\admin\git_projects\ccache.exe;-DCMAKE_INSTALL_PREFIX=G:/v/b1/arrow/x64-windows-dbg/mimalloc_ep/src/mimalloc_ep;-DMI_OVERRIDE=OFF;-DMI_LOCAL_DYNAMIC_TLS=ON;-DMI_BUILD_OBJECT=OFF;-DMI_BUILD_SHARED=OFF;-DMI_BUILD_TESTS=OFF;-GNinja;-S;G:/v/b1/arrow/x64-windows-dbg/mimalloc_ep-prefix/src/mimalloc_ep;-B;G:/v/b1/arrow/x64-windows-dbg/mimalloc_ep-prefix/src/mimalloc_ep-build

  Invalid character escape '\U'.


ninja: build stopped: subcommand failed.

Windows does not recognize the following path because its delimiter is \ instead of /:

-DCMAKE_C_COMPILER_LAUNCHER=C:\Users\admin\git_projects\ccache.exe;-DCMAKE_CXX_COMPILER_LAUNCHER=C:\Users\admin\git_projects\ccache.exe;

Is it possible to pass a path representation similar to that used by CMake to solve the problem.

Component(s)

C/C++

[kou]

Does this work?

diff --git a/cpp/cmake_modules/ThirdpartyToolchain.cmake b/cpp/cmake_modules/ThirdpartyToolchain.cmake
index 978f03198..3a6f36350 100644
--- a/cpp/cmake_modules/ThirdpartyToolchain.cmake
+++ b/cpp/cmake_modules/ThirdpartyToolchain.cmake
@@ -975,9 +975,11 @@ set(EP_COMMON_CMAKE_ARGS
 
 # Enable s/ccache if set by parent.
 if(CMAKE_C_COMPILER_LAUNCHER AND CMAKE_CXX_COMPILER_LAUNCHER)
+  file(TO_CMAKE_PATH "${CMAKE_C_COMPILER_LAUNCHER}" EP_CMAKE_C_COMPILER_LAUNCHER)
+  file(TO_CMAKE_PATH "${CMAKE_CXX_COMPILER_LAUNCHER}" EP_CMAKE_CXX_COMPILER_LAUNCHER)
   list(APPEND EP_COMMON_CMAKE_ARGS
-       -DCMAKE_C_COMPILER_LAUNCHER=${CMAKE_C_COMPILER_LAUNCHER}
-       -DCMAKE_CXX_COMPILER_LAUNCHER=${CMAKE_CXX_COMPILER_LAUNCHER})
+       -DCMAKE_C_COMPILER_LAUNCHER=${EP_CMAKE_C_COMPILER_LAUNCHER}
+       -DCMAKE_CXX_COMPILER_LAUNCHER=${EP_CMAKE_CXX_COMPILER_LAUNCHER})
 endif()
 
 if(NOT ARROW_VERBOSE_THIRDPARTY_BUILD)

[MonicaLiu0311]

I don't have ccache.exe and can't test it. This patch is based on my speculation, but I'm not sure if it's a good approach.

You can ask @autoantwort to help test it.

[autoantwort]

Sorry for the late reply. This patch fixes the issue 👍

[kou]

Thanks. I've opened a PR for it: GH-45349

[kou]

Issue resolved by pull request 45349
#45349