kou commented on code in PR #36835:
URL: https://github.com/apache/arrow/pull/36835#discussion_r1299508642


##########
cpp/cmake_modules/ThirdpartyToolchain.cmake:
##########
@@ -5039,6 +5055,114 @@ if(ARROW_S3)
   endif()
 endif()
 
+# ----------------------------------------------------------------------
+# Azure SDK for C++
+
+macro(build_azure_sdk)
+  message(STATUS "Building Azure SDK for C++ from source")
+
+  find_curl()
+  find_package(LibXml2 REQUIRED)
+  add_custom_target(azure_sdk_dependencies)
+
+  set(AZURE_SDK_PREFIX "${CMAKE_CURRENT_BINARY_DIR}/azure-sdk_ep-install")
+  set(AZURE_SDK_INCLUDE_DIR "${AZURE_SDK_PREFIX}/include")
+
+  set(AZURE_SDK_COMMON_CMAKE_ARGS
+      ${EP_COMMON_CMAKE_ARGS}
+      "-DCMAKE_INSTALL_PREFIX=<INSTALL_DIR>"
+      "-DCMAKE_PREFIX_PATH=${AZURE_SDK_PREFIX}"
+      -DDISABLE_AZURE_CORE_OPENTELEMETRY=ON
+      -DWARNINGS_AS_ERRORS=OFF 
+      -DVCPKG_OVERLAY_PORTS=${CMAKE_SOURCE_DIR}/overlays)
+
+  file(MAKE_DIRECTORY ${AZURE_SDK_INCLUDE_DIR})
+  set(AZURE_CORE_STATIC_LIBRARY
+      
"${AZURE_SDK_PREFIX}/lib/${CMAKE_STATIC_LIBRARY_PREFIX}azure-core${CMAKE_STATIC_LIBRARY_SUFFIX}"
+  )
+  set(AZURE_IDENTITY_STATIC_LIBRARY
+      
"${AZURE_SDK_PREFIX}/lib/${CMAKE_STATIC_LIBRARY_PREFIX}azure-identity${CMAKE_STATIC_LIBRARY_SUFFIX}"
+  )
+  set(AZURE_STORAGE_BLOBS_STATIC_LIBRARY
+      
"${AZURE_SDK_PREFIX}/lib/${CMAKE_STATIC_LIBRARY_PREFIX}azure-storage-blobs${CMAKE_STATIC_LIBRARY_SUFFIX}"
+  )
+  set(AZURE_STORAGE_COMMON_STATIC_LIBRARY
+      
"${AZURE_SDK_PREFIX}/lib/${CMAKE_STATIC_LIBRARY_PREFIX}azure-storage-common${CMAKE_STATIC_LIBRARY_SUFFIX}"
+  )
+  set(AZURE_STORAGE_FILES_DATALAKE_STATIC_LIBRARY
+      
"${AZURE_SDK_PREFIX}/lib/${CMAKE_STATIC_LIBRARY_PREFIX}azure-storage-files-datalake${CMAKE_STATIC_LIBRARY_SUFFIX}"
+  )
+  externalproject_add(azure-sdk_ep
+                      ${EP_COMMON_OPTIONS}
+                      INSTALL_DIR ${AZURE_SDK_PREFIX}
+                      URL ${ARROW_AZURE_SDK_URL}
+                      URL_HASH 
"SHA256=${ARROW_AZURE_SDK_BUILD_SHA256_CHECKSUM}"
+                      CMAKE_ARGS ${AZURE_SDK_COMMON_CMAKE_ARGS}
+                      BUILD_BYPRODUCTS ${AZURE_CORE_STATIC_LIBRARY}
+                                       ${AZURE_IDENTITY_STATIC_LIBRARY}
+                                       ${AZURE_STORAGE_BLOBS_STATIC_LIBRARY}
+                                       ${AZURE_STORAGE_COMMON_STATIC_LIBRARY}
+                                       
${AZURE_STORAGE_FILES_DATALAKE_STATIC_LIBRARY}
+                      DEPENDS azure_sdk_dependencies)
+  add_library(Azure::azure-core STATIC IMPORTED)
+  set_target_properties(Azure::azure-core
+                        PROPERTIES IMPORTED_LOCATION 
${AZURE_CORE_STATIC_LIBRARY}
+                                   INTERFACE_INCLUDE_DIRECTORIES
+                                   ${AZURE_SDK_INCLUDE_DIR})
+  set_property(TARGET Azure::azure-core
+               PROPERTY INTERFACE_LINK_LIBRARIES CURL::libcurl OpenSSL::SSL)
+  add_dependencies(Azure::azure-core azure-sdk_ep)

Review Comment:
   3. Can we require recent curl for `ARROW_AZURE=ON`? (We don't support 
`ARROW_AZURE=ON` on Ubuntu 20.04.)
   
   I think that mixing system curl and vcpkg's curl in the same process will 
cause a problem...



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