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protobuf-c: Update of protobuf removed SYNTAX_PROTO3 used by protobuf-c-1.5.0

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- Addition of patch to enable protobuf-c to be built with protobuf version > 26
- When protobuf-c is upgraded to version 1.5.1 it will include this patch

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
This commit is contained in:
Adolf Belka
2024-09-13 18:26:11 +02:00
committed by Michael Tremer
parent d3ad8411a6
commit 164ddb3ee6
2 changed files with 120 additions and 1 deletions
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3
lfs/protobuf-c
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@@ -70,8 +70,9 @@ $(subst %,%_BLAKE2,$(objects)) :
$(TARGET) : $(patsubst %,$(DIR_DL)/%,$(objects))
@$(PREBUILD)
@rm -rf $(DIR_APP) && cd $(DIR_SRC) && tar axf $(DIR_DL)/$(DL_FILE)
cd $(DIR_APP) && patch -Np1 -i $(DIR_SRC)/src/patches/protobuf-c_1.5.0_protobuf-26.patch
cd $(DIR_APP) && ./configure \
--prefix=/usr
--prefix=/usr
cd $(DIR_APP) && make $(MAKETUNING)
cd $(DIR_APP) && make install
@rm -rf $(DIR_APP)

118
src/patches/protobuf-c_1.5.0_protobuf-26.patch Normal file
View File

@@ -0,0 +1,118 @@
From a6cf1aa386067e26d582cc1d1e327787595c9f13 Mon Sep 17 00:00:00 2001
From: Robert Edmonds <edmonds@users.noreply.github.com>
Date: Wed, 20 Mar 2024 21:48:10 -0400
Subject: [PATCH 1/3] FileGenerator::GenerateHeader(): Set `min_header_version`
unconditionally
Previously, we were conditionally trying to set `min_header_version` to
the lowest possible value, and relying on a "legacy" Google interface to
determine the file descriptor's syntax version as part of that
determination.
Instead, simply bump the minimum version to 1003000 (1.3.0). This
release was almost 7 years ago. In practice protobuf-c users should not
be shipping pre-compiled .pb-c.c/.pb-c.h files, anyway.
---
protoc-c/c_file.cc | 9 +--------
1 file changed, 1 insertion(+), 8 deletions(-)
diff --git a/protoc-c/c_file.cc b/protoc-c/c_file.cc
index ca0ad34e..c6d8a240 100644
--- a/protoc-c/c_file.cc
+++ b/protoc-c/c_file.cc
@@ -117,14 +117,7 @@ FileGenerator::~FileGenerator() {}
void FileGenerator::GenerateHeader(io::Printer* printer) {
std::string filename_identifier = FilenameIdentifier(file_->name());
- int min_header_version = 1000000;
-#if GOOGLE_PROTOBUF_VERSION >= 4023000
- if (FileDescriptorLegacy(file_).syntax() == FileDescriptorLegacy::SYNTAX_PROTO3) {
-#else
- if (file_->syntax() == FileDescriptor::SYNTAX_PROTO3) {
-#endif
- min_header_version = 1003000;
- }
+ const int min_header_version = 1003000;
// Generate top of header.
printer->Print(
From ee3d9e5423c93ee6b828fdda8e7fef13a77634eb Mon Sep 17 00:00:00 2001
From: Robert Edmonds <edmonds@users.noreply.github.com>
Date: Wed, 20 Mar 2024 22:25:54 -0400
Subject: [PATCH 2/3] Reimplement FieldSyntax() to maximize compatibility
across protobuf versions
Recent versions of Google protobuf have broken the interfaces for
determining the syntax version of a .proto file. The current protobuf-c
1.5.0 release does not compile with Google protobuf 26.0 due to the most
recentage breakage. There is a possible workaround involving the Google
protobuf `FileDescriptorLegacy` class, which is documented as:
// TODO Remove this deprecated API entirely.
So we probably shouldn't rely on it.
Instead, this commit obtains the `FileDescriptorProto` corresponding
to the passed in `FieldDescriptor` and interrogates the `syntax` field
directly. This is a single implementation with no version-specific
workarounds. Hopefully this won't break in the next Google protobuf
release.
I tested the `FieldSyntax()` implementation in this commit across a
number of different Google protobuf releases and found that it worked
(`make && make check`) on all of them:
- Google protobuf 3.6.1.3 (Ubuntu 20.04)
- Google protobuf 3.12.4 (Ubuntu 22.04)
- Google protobuf 3.21.12 (Debian 12 + Debian unstable)
- Google protobuf 3.25.2 (Debian experimental)
- Google protobuf 26.1-dev
---
protoc-c/c_helpers.h | 24 ++++++++++++++----------
1 file changed, 14 insertions(+), 10 deletions(-)
diff --git a/protoc-c/c_helpers.h b/protoc-c/c_helpers.h
index 062d330b..be28b601 100644
--- a/protoc-c/c_helpers.h
+++ b/protoc-c/c_helpers.h
@@ -70,10 +70,6 @@
#include <protobuf-c/protobuf-c.pb.h>
#include <google/protobuf/io/printer.h>
-#if GOOGLE_PROTOBUF_VERSION >= 4023000
-# include <google/protobuf/descriptor_legacy.h>
-#endif
-
namespace google {
namespace protobuf {
namespace compiler {
@@ -173,13 +169,21 @@ struct NameIndex
int compare_name_indices_by_name(const void*, const void*);
// Return the syntax version of the file containing the field.
-// This wrapper is needed to be able to compile against protobuf2.
inline int FieldSyntax(const FieldDescriptor* field) {
-#if GOOGLE_PROTOBUF_VERSION >= 4023000
- return FileDescriptorLegacy(field->file()).syntax() == FileDescriptorLegacy::SYNTAX_PROTO3 ? 3 : 2;
-#else
- return field->file()->syntax() == FileDescriptor::SYNTAX_PROTO3 ? 3 : 2;
-#endif
+ auto proto = FileDescriptorProto();
+ field->file()->CopyTo(&proto);
+
+ if (proto.has_syntax()) {
+ auto syntax = proto.syntax();
+ assert(syntax == "proto2" || syntax == "proto3");
+ if (syntax == "proto2") {
+ return 2;
+ } else if (syntax == "proto3") {
+ return 3;
+ }
+ }
+
+ return 2;
}
// Work around changes in protobuf >= 22.x without breaking compilation against