fix(client-cpp): force x64 for Visual Studio Windows packages

VS2017 generator defaults to Win32; pass -DCMAKE_GENERATOR_PLATFORM=x64 on Windows via Maven profile. Add CI PE check that iotdb_session.dll is x64.

Author: hongzhi-gao

.github/workflows/client-cpp-package.yml

@@ -387,6 +387,20 @@ jobs:
             MVN_ARGS+=("-Dcmake.generator=${CMAKE_GENERATOR}")
           fi
           "${MVN_ARGS[@]}"
+      - name: Verify Windows SDK is x64
+        shell: pwsh
+        run: |
+          $dll = "iotdb-client/client-cpp/target/install/lib/iotdb_session.dll"
+          if (-not (Test-Path $dll)) {
+            throw "Missing $dll"
+          }
+          $bytes = [System.IO.File]::ReadAllBytes($dll)
+          $peOffset = [BitConverter]::ToInt32($bytes, 0x3C)
+          $machine = [BitConverter]::ToUInt16($bytes, $peOffset + 4)
+          if ($machine -ne 0x8664) {
+            throw "Expected PE32+ x64 (machine=0x8664), got 0x$($machine.ToString('X4'))"
+          }
+          Write-Host "Verified x64 DLL: $dll"
       - name: Resolve package zip
         id: pkg
         shell: bash

iotdb-client/client-cpp/README.md

@@ -119,12 +119,16 @@ mvn -P with-cpp -pl iotdb-client/client-cpp -am -DskipTests `
   -Dcmake.generator="Visual Studio 16 2019" `
   -Dclient.cpp.package.classifier=windows-x86_64-vs2019 package
 
-# Visual Studio 2017
+# Visual Studio 2017 (CMake uses -A x64 on Windows automatically)
 mvn -P with-cpp -pl iotdb-client/client-cpp -am -DskipTests `
   -Dcmake.generator="Visual Studio 15 2017" `
   -Dclient.cpp.package.classifier=windows-x86_64-vs2017 package
 ```
 
+On Windows, the build passes `-DCMAKE_GENERATOR_PLATFORM=x64` so Visual Studio
+generators target **x64** (VS2017 otherwise defaults to Win32).
+```
+
 ## CMake options
 
 All of these can be set on the Maven command line (`-DWITH_SSL=ON`, etc.) or

iotdb-client/client-cpp/pom.xml

@@ -258,6 +258,33 @@
                 <os.suffix>win</os.suffix>
             </properties>
         </profile>
+        <!-- Visual Studio generators (esp. VS2017) default to Win32 unless -A x64 is set. -->
+        <profile>
+            <id>client-cpp-vs-x64</id>
+            <activation>
+                <os>
+                    <family>windows</family>
+                </os>
+            </activation>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>io.github.cmake-maven-plugin</groupId>
+                        <artifactId>cmake-maven-plugin</artifactId>
+                        <executions>
+                            <execution>
+                                <id>cmake-generate</id>
+                                <configuration>
+                                    <options combine.children="append">
+                                        <option>-DCMAKE_GENERATOR_PLATFORM=x64</option>
+                                    </options>
+                                </configuration>
+                            </execution>
+                        </executions>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
         <profile>
             <id>.skipTests</id>
             <activation>