[ObjC] Include the version checks in generated impl files.

There's always the chance someone will mix these, so play it safe and have checks in both.

PiperOrigin-RevId: 508114797

objectivec/GPBAny.pbobjc.m

@@ -5,6 +5,13 @@
 #import "GPBProtocolBuffers_RuntimeSupport.h"
 #import "GPBAny.pbobjc.h"
 
+#if GOOGLE_PROTOBUF_OBJC_VERSION < 30007
+#error This file was generated by a newer version of protoc which is incompatible with your Protocol Buffer library sources.
+#endif
+#if 30007 < GOOGLE_PROTOBUF_OBJC_MIN_SUPPORTED_VERSION
+#error This file was generated by an older version of protoc which is incompatible with your Protocol Buffer library sources.
+#endif
+
 // @@protoc_insertion_point(imports)
 
 #pragma clang diagnostic push

objectivec/GPBApi.pbobjc.m

@@ -5,6 +5,13 @@
 #import "GPBProtocolBuffers_RuntimeSupport.h"
 #import "GPBApi.pbobjc.h"
 
+#if GOOGLE_PROTOBUF_OBJC_VERSION < 30007
+#error This file was generated by a newer version of protoc which is incompatible with your Protocol Buffer library sources.
+#endif
+#if 30007 < GOOGLE_PROTOBUF_OBJC_MIN_SUPPORTED_VERSION
+#error This file was generated by an older version of protoc which is incompatible with your Protocol Buffer library sources.
+#endif
+
 // @@protoc_insertion_point(imports)
 
 #pragma clang diagnostic push

objectivec/GPBDuration.pbobjc.m

@@ -5,6 +5,13 @@
 #import "GPBProtocolBuffers_RuntimeSupport.h"
 #import "GPBDuration.pbobjc.h"
 
+#if GOOGLE_PROTOBUF_OBJC_VERSION < 30007
+#error This file was generated by a newer version of protoc which is incompatible with your Protocol Buffer library sources.
+#endif
+#if 30007 < GOOGLE_PROTOBUF_OBJC_MIN_SUPPORTED_VERSION
+#error This file was generated by an older version of protoc which is incompatible with your Protocol Buffer library sources.
+#endif
+
 // @@protoc_insertion_point(imports)
 
 #pragma clang diagnostic push

objectivec/GPBEmpty.pbobjc.m

@@ -5,6 +5,13 @@
 #import "GPBProtocolBuffers_RuntimeSupport.h"
 #import "GPBEmpty.pbobjc.h"
 
+#if GOOGLE_PROTOBUF_OBJC_VERSION < 30007
+#error This file was generated by a newer version of protoc which is incompatible with your Protocol Buffer library sources.
+#endif
+#if 30007 < GOOGLE_PROTOBUF_OBJC_MIN_SUPPORTED_VERSION
+#error This file was generated by an older version of protoc which is incompatible with your Protocol Buffer library sources.
+#endif
+
 // @@protoc_insertion_point(imports)
 
 #pragma clang diagnostic push

objectivec/GPBFieldMask.pbobjc.m

@@ -5,6 +5,13 @@
 #import "GPBProtocolBuffers_RuntimeSupport.h"
 #import "GPBFieldMask.pbobjc.h"
 
+#if GOOGLE_PROTOBUF_OBJC_VERSION < 30007
+#error This file was generated by a newer version of protoc which is incompatible with your Protocol Buffer library sources.
+#endif
+#if 30007 < GOOGLE_PROTOBUF_OBJC_MIN_SUPPORTED_VERSION
+#error This file was generated by an older version of protoc which is incompatible with your Protocol Buffer library sources.
+#endif
+
 // @@protoc_insertion_point(imports)
 
 #pragma clang diagnostic push

objectivec/GPBSourceContext.pbobjc.m

@@ -5,6 +5,13 @@
 #import "GPBProtocolBuffers_RuntimeSupport.h"
 #import "GPBSourceContext.pbobjc.h"
 
+#if GOOGLE_PROTOBUF_OBJC_VERSION < 30007
+#error This file was generated by a newer version of protoc which is incompatible with your Protocol Buffer library sources.
+#endif
+#if 30007 < GOOGLE_PROTOBUF_OBJC_MIN_SUPPORTED_VERSION
+#error This file was generated by an older version of protoc which is incompatible with your Protocol Buffer library sources.
+#endif
+
 // @@protoc_insertion_point(imports)
 
 #pragma clang diagnostic push

objectivec/GPBStruct.pbobjc.m

@@ -5,6 +5,13 @@
 #import "GPBProtocolBuffers_RuntimeSupport.h"
 #import "GPBStruct.pbobjc.h"
 
+#if GOOGLE_PROTOBUF_OBJC_VERSION < 30007
+#error This file was generated by a newer version of protoc which is incompatible with your Protocol Buffer library sources.
+#endif
+#if 30007 < GOOGLE_PROTOBUF_OBJC_MIN_SUPPORTED_VERSION
+#error This file was generated by an older version of protoc which is incompatible with your Protocol Buffer library sources.
+#endif
+
 #import <stdatomic.h>
 
 // @@protoc_insertion_point(imports)

objectivec/GPBTimestamp.pbobjc.m

@@ -5,6 +5,13 @@
 #import "GPBProtocolBuffers_RuntimeSupport.h"
 #import "GPBTimestamp.pbobjc.h"
 
+#if GOOGLE_PROTOBUF_OBJC_VERSION < 30007
+#error This file was generated by a newer version of protoc which is incompatible with your Protocol Buffer library sources.
+#endif
+#if 30007 < GOOGLE_PROTOBUF_OBJC_MIN_SUPPORTED_VERSION
+#error This file was generated by an older version of protoc which is incompatible with your Protocol Buffer library sources.
+#endif
+
 // @@protoc_insertion_point(imports)
 
 #pragma clang diagnostic push

objectivec/GPBType.pbobjc.m

@@ -5,6 +5,13 @@
 #import "GPBProtocolBuffers_RuntimeSupport.h"
 #import "GPBType.pbobjc.h"
 
+#if GOOGLE_PROTOBUF_OBJC_VERSION < 30007
+#error This file was generated by a newer version of protoc which is incompatible with your Protocol Buffer library sources.
+#endif
+#if 30007 < GOOGLE_PROTOBUF_OBJC_MIN_SUPPORTED_VERSION
+#error This file was generated by an older version of protoc which is incompatible with your Protocol Buffer library sources.
+#endif
+
 #import <stdatomic.h>
 
 // @@protoc_insertion_point(imports)

objectivec/GPBWrappers.pbobjc.m

@@ -5,6 +5,13 @@
 #import "GPBProtocolBuffers_RuntimeSupport.h"
 #import "GPBWrappers.pbobjc.h"
 
+#if GOOGLE_PROTOBUF_OBJC_VERSION < 30007
+#error This file was generated by a newer version of protoc which is incompatible with your Protocol Buffer library sources.
+#endif
+#if 30007 < GOOGLE_PROTOBUF_OBJC_MIN_SUPPORTED_VERSION
+#error This file was generated by an older version of protoc which is incompatible with your Protocol Buffer library sources.
+#endif
+
 // @@protoc_insertion_point(imports)
 
 #pragma clang diagnostic push

src/google/protobuf/compiler/objectivec/file.cc

@@ -530,13 +530,12 @@ void FileGenerator::GenerateFile(
 
   p->Print("\n");
 
-  if (file_type == GeneratedFileType::kHeader) {
   // Add some verification that the generated code matches the source the
   // code is being compiled with.
   // NOTE: This captures the raw numeric values at the time the generator was
   // compiled, since that will be the versions for the ObjC runtime at that
   // time.  The constants in the generated code will then get their values at
-    // at compile time (so checking against the headers being used to compile).
+  // compile time (so checking against the headers being used to compile).
   p->Print(
       // clang-format off
       "#if GOOGLE_PROTOBUF_OBJC_VERSION < $google_protobuf_objc_version$\n"
@@ -549,7 +548,6 @@ void FileGenerator::GenerateFile(
       // clang-format on
       "google_protobuf_objc_version",
       absl::StrCat(GOOGLE_PROTOBUF_OBJC_VERSION));
-  }
 
   // Enum implementation uses atomic in the generated code, so add
   // the system import as needed.