PlatformIO: Fix linking to make initVariant() work (#6809)

tools/platformio-build-esp32.py

@@ -356,10 +356,10 @@ if "build.variant" in env.BoardConfig():
             join(variants_dir, env.BoardConfig().get("build.variant"))
         ]
     )
-    libs.append(env.BuildLibrary(
+    env.BuildSources(
         join("$BUILD_DIR", "FrameworkArduinoVariant"),
         join(variants_dir, env.BoardConfig().get("build.variant"))
-    ))
+    )
 
 envsafe = env.Clone()
 

tools/platformio-build-esp32c3.py

@@ -349,10 +349,10 @@ if "build.variant" in env.BoardConfig():
             join(variants_dir, env.BoardConfig().get("build.variant"))
         ]
     )
-    libs.append(env.BuildLibrary(
+    env.BuildSources(
         join("$BUILD_DIR", "FrameworkArduinoVariant"),
         join(variants_dir, env.BoardConfig().get("build.variant"))
-    ))
+    )
 
 envsafe = env.Clone()
 

tools/platformio-build-esp32s2.py

@@ -351,10 +351,10 @@ if "build.variant" in env.BoardConfig():
             join(variants_dir, env.BoardConfig().get("build.variant"))
         ]
     )
-    libs.append(env.BuildLibrary(
+    env.BuildSources(
         join("$BUILD_DIR", "FrameworkArduinoVariant"),
         join(variants_dir, env.BoardConfig().get("build.variant"))
-    ))
+    )
 
 envsafe = env.Clone()
 

tools/platformio-build-esp32s3.py

@@ -368,10 +368,10 @@ if "build.variant" in env.BoardConfig():
             join(variants_dir, env.BoardConfig().get("build.variant"))
         ]
     )
-    libs.append(env.BuildLibrary(
+    env.BuildSources(
         join("$BUILD_DIR", "FrameworkArduinoVariant"),
         join(variants_dir, env.BoardConfig().get("build.variant"))
-    ))
+    )
 
 envsafe = env.Clone()