Add protobuf to CI

.github/workflows/ci.yml

@@ -119,7 +119,7 @@ jobs:
       - name: Build GTK4
         if: matrix.gtk-version == '4'
         run: > # Use -j2 option to prevent out of memory errors with GitHub Action runners
-          uv run gvsbuild build --ninja-opts -j2 --enable-gi --py-wheel gtk4 libadwaita gtksourceview5 pygobject
+          uv run gvsbuild build --ninja-opts -j2 --enable-gi --py-wheel gtk4 libadwaita gtksourceview5 pygobject protobuf-c
           adwaita-icon-theme gtkmm
       - name: Copy wheel files
         run: |

gvsbuild/patches/protobuf-c/0001-cmake-Replace-generator-expression.patch

@@ -0,0 +1,32 @@
+From f20ed3666efe28d94bcfe198f924c2f1044816ba Mon Sep 17 00:00:00 2001
+From: Dario Marino Saccavino <dmsaccav@amazon.com>
+Date: Fri, 16 Jan 2026 11:14:02 +0100
+Subject: [PATCH] cmake: Replace usage of generator expression with target
+ property
+
+In the definition of `PROTOBUF_PROTOC_EXECUTABLE`, replace the `$<TARGET_FILE>`
+expression with the target's `LOCATION` property.
+
+On MSVC, cmake copies to the build directory the shared libraries that are
+in the same directory as protoc.exe. The copy happens at configure time,
+when generator expressions cannot be used.
+---
+ build-cmake/CMakeLists.txt | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/build-cmake/CMakeLists.txt b/build-cmake/CMakeLists.txt
+index 83526e5..b077ebf 100644
+--- a/build-cmake/CMakeLists.txt
++++ b/build-cmake/CMakeLists.txt
+@@ -18,7 +18,7 @@ endif()
+ find_package(Protobuf CONFIG)
+ if(Protobuf_FOUND)
+   # Keep compatibility with FindProtobuf CMake module
+-  set(PROTOBUF_PROTOC_EXECUTABLE $<TARGET_FILE:protobuf::protoc>)
++  get_target_property(PROTOBUF_PROTOC_EXECUTABLE protobuf::protoc LOCATION)
+   get_target_property(PROTOBUF_INCLUDE_DIR protobuf::libprotobuf INTERFACE_INCLUDE_DIRECTORIES)
+ else()
+   message(STATUS "Protobuf CMake config not found fallback to Cmake Module")
+-- 
+2.50.1 (Apple Git-155)
+

gvsbuild/projects/abseil.py

@@ -24,10 +24,10 @@ def __init__(self):
         Project.__init__(
             self,
             "abseil-cpp",
-            version="20250512.1",
+            version="20260107.1",
             repository="https://github.com/abseil/abseil-cpp",
             archive_url="https://github.com/abseil/abseil-cpp/releases/download/{version}/abseil-cpp-{version}.tar.gz",
-            hash="9b7a064305e9fd94d124ffa6cc358592eb42b5da588fb4e07d09254aa40086db",
+            hash="4314e2a7cbac89cac25a2f2322870f343d81579756ceff7f431803c2c9090195",
             dependencies=[
                 "cmake",
                 "ninja",
@@ -38,6 +38,6 @@ def __init__(self):
     def build(self):
         CmakeProject.build(
             self,
-            cmake_params=r"-DBUILD_SHARED_LIBS=ON -DABSL_PROPAGATE_CXX_STD=ON",
+            cmake_params=r"-DBUILD_SHARED_LIBS=ON -DABSL_PROPAGATE_CXX_STD=ON -DCMAKE_CXX_STANDARD=17 -DCMAKE_CXX_STANDARD_REQUIRED=ON",
             use_ninja=True,
         )

gvsbuild/projects/protobuf.py

@@ -24,10 +24,10 @@ def __init__(self):
         Project.__init__(
             self,
             "protobuf",
-            version="25.1",
+            version="33.5",
             repository="https://github.com/protocolbuffers/protobuf",
             archive_url="https://github.com/protocolbuffers/protobuf/releases/download/v{version}/protobuf-{version}.tar.gz",
-            hash="9bd87b8280ef720d3240514f884e56a712f2218f0d693b48050c836028940a42",
+            hash="c6c7c27fadc19d40ab2eaa23ff35debfe01f6494a8345559b9bb285ce4144dd1",
             dependencies=[
                 "abseil-cpp",
                 "cmake",
@@ -40,7 +40,7 @@ def build(self):
         # We need to compile with STATIC_RUNTIME off since protobuf-c also compiles with it OFF
         CmakeProject.build(
             self,
-            cmake_params=r'-DBUILD_SHARED_LIBS=ON -Dprotobuf_ABSL_PROVIDER=package -Dprotobuf_DEBUG_POSTFIX="" -Dprotobuf_BUILD_TESTS=OFF -Dprotobuf_WITH_ZLIB=ON -Dprotobuf_MSVC_STATIC_RUNTIME=OFF',
+            cmake_params=r'-DBUILD_SHARED_LIBS=ON -Dprotobuf_ABSL_PROVIDER=package -Dprotobuf_DEBUG_POSTFIX="" -Dprotobuf_BUILD_TESTS=OFF -Dprotobuf_WITH_ZLIB=ON -Dprotobuf_MSVC_STATIC_RUNTIME=OFF -DCMAKE_CXX_STANDARD=17 -DCMAKE_CXX_STANDARD_REQUIRED=ON',
             use_ninja=True,
         )
 
@@ -63,12 +63,15 @@ def __init__(self):
                 "protobuf",
                 "ninja",
             ],
+            patches=[
+                "0001-cmake-Replace-generator-expression.patch",
+            ],
         )
 
     def build(self):
         CmakeProject.build(
             self,
-            cmake_params="-DBUILD_SHARED_LIBS=ON",
+            cmake_params="-DBUILD_SHARED_LIBS=ON -DCMAKE_CXX_STANDARD=17 -DCMAKE_CXX_STANDARD_REQUIRED=ON",
             use_ninja=True,
             source_part="build-cmake",
         )