(arrow) branch main updated: GH-39023: [C++][CMake] Add missing launcher path conversion for ExternalPackage (#45349)

[kou]

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The following commit(s) were added to refs/heads/main by this push:
     new 2c90dafa0a GH-39023: [C++][CMake] Add missing launcher path conversion 
for ExternalPackage (#45349)
2c90dafa0a is described below

commit 2c90dafa0abeaa5661a4ccac78c16dfd370bca32
Author: Sutou Kouhei <k...@clear-code.com>
AuthorDate: Sat Jan 25 17:33:56 2025 +0900

    GH-39023: [C++][CMake] Add missing launcher path conversion for 
ExternalPackage (#45349)
    
    ### Rationale for this change
    
    We need to convert it on Windows.
    
    ### What changes are included in this PR?
    
    Convert it to CMake path.
    
    ### Are these changes tested?
    
    Yes.
    
    ### Are there any user-facing changes?
    
    Yes.
    * GitHub Issue: #39023
    
    Authored-by: Sutou Kouhei <k...@clear-code.com>
    Signed-off-by: Sutou Kouhei <k...@clear-code.com>
---
 cpp/cmake_modules/ThirdpartyToolchain.cmake | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/cpp/cmake_modules/ThirdpartyToolchain.cmake 
b/cpp/cmake_modules/ThirdpartyToolchain.cmake
index f9459f4175..cbc96ce397 100644
--- a/cpp/cmake_modules/ThirdpartyToolchain.cmake
+++ b/cpp/cmake_modules/ThirdpartyToolchain.cmake
@@ -988,9 +988,11 @@ endif()
 
 # 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)