ci: fix windows msys2 build

.github/workflows/build.yml

@@ -68,12 +68,7 @@ jobs:
     - uses: msys2/setup-msys2@v2
       with:
         update: true
-        install: mingw-w64-x86_64-toolchain make mingw-w64-x86_64-cmake mingw-w64-x86_64-ccache mingw-w64-x86_64-boost mingw-w64-x86_64-openssl mingw-w64-x86_64-zeromq mingw-w64-x86_64-libsodium mingw-w64-x86_64-hidapi mingw-w64-x86_64-libusb mingw-w64-x86_64-unbound git
+        install: mingw-w64-x86_64-toolchain make mingw-w64-x86_64-cmake mingw-w64-x86_64-ccache mingw-w64-x86_64-boost mingw-w64-x86_64-openssl mingw-w64-x86_64-zeromq mingw-w64-x86_64-libsodium mingw-w64-x86_64-hidapi mingw-w64-x86_64-protobuf mingw-w64-x86_64-libusb mingw-w64-x86_64-unbound git pkg-config
-    - shell: msys2 {0}
-      run: |
-           curl -O https://repo.msys2.org/mingw/mingw64/mingw-w64-x86_64-protobuf-c-1.4.1-1-any.pkg.tar.zst
-           curl -O https://repo.msys2.org/mingw/mingw64/mingw-w64-x86_64-protobuf-21.9-1-any.pkg.tar.zst
-           pacman --noconfirm -U mingw-w64-x86_64-protobuf-c-1.4.1-1-any.pkg.tar.zst mingw-w64-x86_64-protobuf-21.9-1-any.pkg.tar.zst
     - name: build
       run: |
         ${{env.CCACHE_SETTINGS}}

cmake/CheckTrezor.cmake

@@ -23,32 +23,6 @@ OPTION(USE_DEVICE_TREZOR_UDP_RELEASE "Trezor UdpTransport in release mode" $ENV{
 OPTION(USE_DEVICE_TREZOR_DEBUG "Trezor Debugging enabled" $ENV{USE_DEVICE_TREZOR_DEBUG})
 OPTION(TREZOR_DEBUG "Main Trezor debugging switch" $ENV{TREZOR_DEBUG})
 
-# Helper function to fix cmake < 3.6.0 FindProtobuf variables
-function(_trezor_protobuf_fix_vars)
-    if(${CMAKE_VERSION} VERSION_LESS "3.6.0")
-        foreach(UPPER
-                PROTOBUF_SRC_ROOT_FOLDER
-                PROTOBUF_IMPORT_DIRS
-                PROTOBUF_DEBUG
-                PROTOBUF_LIBRARY
-                PROTOBUF_PROTOC_LIBRARY
-                PROTOBUF_INCLUDE_DIR
-                PROTOBUF_PROTOC_EXECUTABLE
-                PROTOBUF_LIBRARY_DEBUG
-                PROTOBUF_PROTOC_LIBRARY_DEBUG
-                PROTOBUF_LITE_LIBRARY
-                PROTOBUF_LITE_LIBRARY_DEBUG
-                )
-            if (DEFINED ${UPPER})
-                string(REPLACE "PROTOBUF_" "Protobuf_" Camel ${UPPER})
-                if (NOT DEFINED ${Camel})
-                    set(${Camel} ${${UPPER}} PARENT_SCOPE)
-                endif()
-            endif()
-        endforeach()
-    endif()
-endfunction()
-
 macro(trezor_fatal_msg msg)
     if ($ENV{USE_DEVICE_TREZOR_MANDATORY})
         message(FATAL_ERROR
@@ -72,40 +46,21 @@ endmacro()
 
 # Use Trezor master switch
 if (USE_DEVICE_TREZOR)
-    # Protobuf is required to build protobuf messages for Trezor
+    # Look for protobuf-config.cmake, provided by Protobuf
-    include(FindProtobuf OPTIONAL)
+    find_package(Protobuf CONFIG)
 
-    # PkgConfig works better with new Protobuf
+    if (Protobuf_FOUND)
-    find_package(PkgConfig QUIET)
+        # https://github.com/protocolbuffers/protobuf/issues/14576
-    pkg_check_modules(PROTOBUF protobuf)
+        find_program(Protobuf_PROTOC_EXECUTABLE protoc REQUIRED)
-
+        set(Protobuf_LIBRARY protobuf::libprotobuf) # Compatibility with FindProtobuf.cmake
-    if (NOT Protobuf_FOUND)
+    else()
-        FIND_PACKAGE(Protobuf CONFIG)
+        # Look for FindProtobuf.cmake, provided by CMake
+        find_package(Protobuf)
     endif()
-    if (NOT Protobuf_FOUND)
-        FIND_PACKAGE(Protobuf)
-    endif()
-
-    _trezor_protobuf_fix_vars()
 
     # Early fail for optional Trezor support
-    if(NOT Protobuf_FOUND AND NOT Protobuf_LIBRARY AND NOT Protobuf_PROTOC_EXECUTABLE AND NOT Protobuf_INCLUDE_DIR)
+    if (NOT Protobuf_FOUND)
-        trezor_fatal_msg("Trezor: Could not find Protobuf")
+        trezor_fatal_msg("Trezor: protobuf library not found")
-    elseif(${CMAKE_CXX_STANDARD} LESS 17 AND ${Protobuf_VERSION} GREATER 21)
-        trezor_fatal_msg("Trezor: Unsupported Protobuf version ${Protobuf_VERSION} with C++ ${CMAKE_CXX_STANDARD}. Please, use Protobuf v21.")
-    elseif(NOT Protobuf_LIBRARY)
-        trezor_fatal_msg("Trezor: Protobuf library not found: ${Protobuf_LIBRARY}")
-        unset(Protobuf_FOUND)
-    elseif(NOT Protobuf_PROTOC_EXECUTABLE OR NOT EXISTS "${Protobuf_PROTOC_EXECUTABLE}")
-        trezor_fatal_msg("Trezor: Protobuf executable not found: ${Protobuf_PROTOC_EXECUTABLE}")
-        unset(Protobuf_FOUND)
-    elseif(NOT Protobuf_INCLUDE_DIR OR NOT EXISTS "${Protobuf_INCLUDE_DIR}")
-        trezor_fatal_msg("Trezor: Protobuf include dir not found: ${Protobuf_INCLUDE_DIR}")
-        unset(Protobuf_FOUND)
-    else()
-        message(STATUS "Trezor: Protobuf lib: ${Protobuf_LIBRARY}, inc: ${Protobuf_INCLUDE_DIR}, protoc: ${Protobuf_PROTOC_EXECUTABLE}")
-        set(Protobuf_INCLUDE_DIRS ${Protobuf_INCLUDE_DIR})
-        set(Protobuf_FOUND 1)  # override found if all required info was provided by variables
     endif()
 
     if(TREZOR_DEBUG)