> I also do not understand the versioning logic, you are using v3.20 version while one year later we have v32 version.
https://protobuf.dev/support/version-support/ C++Proto has gone from 3.20 to 6.32 in the time period you are looking at. We use a monotonically increasing minor that is the same across all languages, which is the release or protoc version which is "32.0". Each language uses that for its minor/point but has a language-specific major version: the 32.0 protoc is the one for C++ 6.32.0, C# 3.32.0, java 4.32.0. In the past few years we have shifted around where we shifted some places that were cross-language topics from calling it "3.20.0" to referring to it as "20.0" which is what you are noticing, but 3.20.0 was already cross-language-version=20.0. On Thu, Sep 25, 2025 at 12:33 PM Petras Vestartas <petrasvestar...@gmail.com> wrote: > Hi, > > Do you have cmake that works for the current version of protubuf? > > I also do not understand the versioning logic, you are using v3.20 version > while one year later we have v32 version. > > On Monday, 19 August 2024 at 15:49:47 UTC+2 Claude Robitaille wrote: > >> I forgot that this is required in my main project top CMakeList.txt: >> >> find_package(protobuf REQUIRED PATHS >> $ENV{INSTALL}/protobuf/lib/cmake/protobuf) >> include($ENV{INSTALL}/protobuf/lib/cmake/protobuf/protobuf-module.cmake) >> >> Also, I am on Linux but I do not see why it would be different on macOS. >> >> >> On Monday, August 19, 2024 at 9:46:38 a.m. UTC-4 Claude Robitaille wrote: >> >>> I have been using protobuf with static linking for years and moved to >>> cmake a few months ago. >>> >>> Since I always cross-compile I never use the system installed library >>> and tools so my flow is this >>> 1 - Build, using cmake anything that must be using the local compiler >>> (in the case of protobuf because protoc is needed for later). ATM it is >>> only protobuf >>> 2 - Build all the dependencies, also using cmake >>> 3 - Build my project, including internal libraries. >>> >>> For the first step, ie building protobuf and produce a static archive (a >>> file ending with .a) I use this excerpt from the corresponding cmake: >>> include(ExternalProject) >>> >>> ExternalProject_Add( >>> protobuf >>> GIT_REPOSITORY https://github.com/protocolbuffers/protobuf.git >>> GIT_TAG v3.20.3 >>> SOURCE_SUBDIR cmake >>> CMAKE_ARGS >>> -Dprotobuf_BUILD_TESTS=OFF >>> -Dprotobuf_BUILD_EXAMPLES=OFF >>> -DCMAKE_INSTALL_PREFIX=$ENV{INSTALL}/protobuf >>> -Dprotobuf_BUILD_CONFORMANCE=OFF >>> -Dprotobuf_BUILD_EXAMPLES=OFF >>> -Dprotobuf_BUILD_LIBPROTOC=ON >>> -Dprotobuf_BUILD_SHARED_LIBS=OFF >>> -Dprotobuf_MSVC_STATIC_RUNTIME=OFF >>> -Dprotobuf_WITH_ZLIB=OFF >>> BUILD_BYPRODUCTS >>> $ENV{INSTALL}/lib/libprotobuf.a >>> $ENV{INSTALL}/bin/protoc >>> ) >>> >>> Note that the install prefix comes from an environment variable. It is >>> normally set to ./build In other word, protobuf and the cmake files are in >>> a child directory off the main build location (which is used by step 3 >>> above). Also, SHARED_LIBS is Off meaning that a static library is created. >>> >>> And then in my main project (so step 3 above), I use this to process my >>> proto files (I use to only deal with c++ hence the name; I added python at >>> a later stage): >>> >>> set(GLOBAL_PROTO_FILES "" CACHE INTERNAL "") >>> >>> # Define the append function used by other CMakeList files >>> function(append_proto_file filename) >>> set(GLOBAL_PROTO_FILES ${GLOBAL_PROTO_FILES} ${filename} CACHE >>> INTERNAL "") >>> endfunction() >>> >>> # >>> # The proto file processing function >>> # >>> >>> function(CREATE_CPP_PROTO SRCS HDRS) >>> list(REMOVE_DUPLICATES GLOBAL_PROTO_FILES) >>> >>> set(${SRCS}) >>> set(${HDRS}) >>> >>> #printList(VAR ${PROTO_SRC_TREE} TITLE "Proto location location") >>> #printList(VAR ${GLOBAL_PROTO_FILES} TITLE "Proto files") >>> >>> add_library(proto-objects OBJECT ${GLOBAL_PROTO_FILES}) >>> target_link_libraries(proto-objects PUBLIC protobuf::libprotobuf) >>> target_include_directories(proto-objects PUBLIC >>> "$<BUILD_INTERFACE:$ENV{GENERATED}>") >>> >>> make_directory($ENV{GENERATED}) >>> make_directory($ENV{GENERATED}/python) >>> >>> # This is a function provided by the cmake binding for protobuf >>> # C++ >>> protobuf_generate( >>> TARGET proto-objects >>> LANGUAGE cpp >>> PROTOC_OUT_DIR $ENV{GENERATED} >>> IMPORT_DIRS ${MODELS_DIR};${PROTO_SRC_TREE} >>> #IMPORT_DIRS ${MODELS_DIR} >>> #PROTOC_OPTIONS "--cpp_opt=paths=source_relative" >>> #PROTOC_OPTIONS "--proto_path=${MODELS_DIR}" >>> ) >>> >>> # Python >>> protobuf_generate( >>> TARGET proto-objects >>> LANGUAGE python >>> PROTOC_OUT_DIR $ENV{GENERATED}/python >>> IMPORT_DIRS ${MODELS_DIR};${PROTO_SRC_TREE} >>> ) >>> >>> target_include_directories(proto-objects PRIVATE $ENV{GENERATED}) >>> >>> # Probably useless but other targets depends on it, so we keep it >>> but it does nothing. In future we could probably remove >>> # reference to it. >>> add_custom_target(PROTO_FILES_READY >>> COMMENT "Moving .pb.h and _pb2.py files to replicate source >>> directory structure" >>> ) >>> >>> set_source_files_properties(${${SRCS}} ${${HDRS}} PROPERTIES >>> GENERATED TRUE) >>> set(${SRCS} ${${SRCS}} PARENT_SCOPE) >>> set(${HDRS} ${${HDRS}} PARENT_SCOPE) >>> endfunction() >>> >>> >>> >>> On Monday, August 19, 2024 at 2:32:25 a.m. UTC-4 Marcin Lewandowski >>> wrote: >>> >>>> Hello, >>>> >>>> I am working on a library where I would use protobuf. >>>> >>>> I need to link it statically. The target platform is macOS. >>>> >>>> The usual way of fetching dependencies (brew install protobuf) is no >>>> go, as it comes only with shared libraries. >>>> >>>> I tried forcing homebrew to rebuild protobuf (brew install protobuf >>>> --build-from-source) but it fails as some tests are not passing (logs [1] >>>> at the end of this message). >>>> >>>> I fetched the source code (27.3) release from github, run >>>> >>>> bazel build :portico :protobuf >>>> >>>> inside the source directory, but while it compiles protoc compiler, >>>> there's no CMake/protobuf-lite library in the output. >>>> >>>> Apparently the runtime is based on CMake, so I run >>>> >>>> cmake -S . -B build -Dprotobuf_BUILD_TESTS=OFF -DCMAKE_CXX_STANDARD=17 >>>> -Dprotobuf_ABSL_PROVIDER=package -Dprotobuf_JSONCPP_PROVIDER=package >>>> >>>> and then issued compilation in build/ dir, and yay, it compiled >>>> protobuf. >>>> >>>> However, when I added the build/cmake to CMAKE_PREFIX_PATH it complains >>>> about missing build/cmake/protobuf/protobuf-targets.cmake >>>> >>>> So I tried adding the repository as git submodule, and adding it via >>>> add_subdirectory CMake command, then it fails with >>>> >>>> CMake Error: install(EXPORT "protobuf-targets" ...) includes target >>>> "libprotobuf-lite" which requires target "absl_absl_check" that is not in >>>> any export set. >>>> CMake Error: install(EXPORT "protobuf-targets" ...) includes target >>>> "libprotobuf-lite" which requires target "absl_absl_log" that is not in any >>>> export set. >>>> CMake Error: install(EXPORT "protobuf-targets" ...) includes target >>>> "libprotobuf-lite" which requires target "absl_algorithm" that is not in >>>> any export set. >>>> CMake Error: install(EXPORT "protobuf-targets" ...) includes target >>>> "libprotobuf-lite" which requires target "absl_base" that is not in any >>>> export set. >>>> ... >>>> >>>> abseil is added as add_subdirectory as well. >>>> >>>> I run into conclusion that I must be doing something fundamentally >>>> wrong, as I don't expect such popular piece of code to be so hard to >>>> integrate. >>>> >>>> Any suggestions on how to properly embed protobuf within such a project? >>>> >>>> Thanks in advance, >>>> >>>> Marcin >>>> >>>> [1] Failed tests: >>>> >>>> 2: [ RUN ] TextFormatParserTest.ParseFieldValueFromString >>>> 2: E0000 00:00:1723926116.158054 5519321 text_format.cc:417] Error >>>> parsing text-format protobuf_unittest.TestAllTypes: 1:1: Expected integer, >>>> got: a >>>> 2: E0000 00:00:1723926116.158063 5519321 text_format.cc:417] Error >>>> parsing text-format protobuf_unittest.TestAllTypes: 1:1: Integer out of >>>> range (999999999999999999999999999999999999) >>>> 2: E0000 00:00:1723926116.158079 5519321 text_format.cc:417] Error >>>> parsing text-format protobuf_unittest.TestAllTypes: 1:1: Expected integer, >>>> got: a >>>> 2: E0000 00:00:1723926116.158082 5519321 text_format.cc:417] Error >>>> parsing text-format protobuf_unittest.TestAllTypes: 1:1: Integer out of >>>> range (999999999999999999999999999999999999) >>>> 2: E0000 00:00:1723926116.158084 5519321 text_format.cc:417] Error >>>> parsing text-format protobuf_unittest.TestAllTypes: 1:1: Expected integer, >>>> got: - >>>> 2: E0000 00:00:1723926116.158085 5519321 text_format.cc:417] Error >>>> parsing text-format protobuf_unittest.TestAllTypes: 1:1: Expected integer, >>>> got: a >>>> 2: E0000 00:00:1723926116.158087 5519321 text_format.cc:417] Error >>>> parsing text-format protobuf_unittest.TestAllTypes: 1:1: Integer out of >>>> range (999999999999999999999999999999999999) >>>> 2: E0000 00:00:1723926116.158089 5519321 text_format.cc:417] Error >>>> parsing text-format protobuf_unittest.TestAllTypes: 1:1: Expected integer, >>>> got: - >>>> 2: E0000 00:00:1723926116.158090 5519321 text_format.cc:417] Error >>>> parsing text-format protobuf_unittest.TestAllTypes: 1:1: Expected integer, >>>> got: a >>>> 2: E0000 00:00:1723926116.158092 5519321 text_format.cc:417] Error >>>> parsing text-format protobuf_unittest.TestAllTypes: 1:1: Integer out of >>>> range (999999999999999999999999999999999999) >>>> 2: E0000 00:00:1723926116.158094 5519321 text_format.cc:417] Error >>>> parsing text-format protobuf_unittest.TestAllTypes: 1:1: Expected integer, >>>> got: - >>>> 2: E0000 00:00:1723926116.158095 5519321 text_format.cc:417] Error >>>> parsing text-format protobuf_unittest.TestAllTypes: 1:1: Expected integer, >>>> got: a >>>> 2: E0000 00:00:1723926116.158097 5519321 text_format.cc:417] Error >>>> parsing text-format protobuf_unittest.TestAllTypes: 1:1: Integer out of >>>> range (999999999999999999999999999999999999) >>>> 2: E0000 00:00:1723926116.158101 5519321 text_format.cc:417] Error >>>> parsing text-format protobuf_unittest.TestAllTypes: 1:5: Invalid value for >>>> boolean field "optional_bool". Value: "tRue". >>>> 2: E0000 00:00:1723926116.158106 5519321 text_format.cc:417] Error >>>> parsing text-format protobuf_unittest.TestAllTypes: 1:6: Invalid value for >>>> boolean field "optional_bool". Value: "faLse". >>>> 2: E0000 00:00:1723926116.158108 5519321 text_format.cc:417] Error >>>> parsing text-format protobuf_unittest.TestAllTypes: 1:1: Integer out of >>>> range (2) >>>> 2: E0000 00:00:1723926116.158109 5519321 text_format.cc:417] Error >>>> parsing text-format protobuf_unittest.TestAllTypes: 1:1: Expected >>>> identifier, got: - >>>> 2: E0000 00:00:1723926116.158111 5519321 text_format.cc:417] Error >>>> parsing text-format protobuf_unittest.TestAllTypes: 1:3: Invalid value for >>>> boolean field "optional_bool". Value: "on". >>>> 2: E0000 00:00:1723926116.158113 5519321 text_format.cc:417] Error >>>> parsing text-format protobuf_unittest.TestAllTypes: 1:2: Invalid value for >>>> boolean field "optional_bool". Value: "a". >>>> 2: E0000 00:00:1723926116.158130 5519321 text_format.cc:417] Error >>>> parsing text-format protobuf_unittest.TestAllTypes: 1:1: Expected double, >>>> got: a >>>> 2: E0000 00:00:1723926116.158132 5519321 text_format.cc:417] Error >>>> parsing text-format protobuf_unittest.TestAllTypes: 1:1: Expected double, >>>> got: a >>>> 2: E0000 00:00:1723926116.158134 5519321 text_format.cc:417] Error >>>> parsing text-format protobuf_unittest.TestAllTypes: 1:1: Expect a decimal >>>> number, got: 0xf >>>> 2: E0000 00:00:1723926116.158136 5519321 text_format.cc:417] Error >>>> parsing text-format protobuf_unittest.TestAllTypes: 1:1: Expect a decimal >>>> number, got: 012 >>>> 2: E0000 00:00:1723926116.158138 5519321 text_format.cc:417] Error >>>> parsing text-format protobuf_unittest.TestAllTypes: 1:1: Expected string, >>>> got: hello >>>> 2: E0000 00:00:1723926116.158141 5519321 text_format.cc:417] Error >>>> parsing text-format protobuf_unittest.TestAllTypes: 1:7: Unknown >>>> enumeration value of "FOOBAR" for field "optional_nested_enum". >>>> 2: E0000 00:00:1723926116.158143 5519321 text_format.cc:417] Error >>>> parsing text-format protobuf_unittest.TestAllTypes: 1:1: Expected "{", >>>> found "any". >>>> >>>> -- > You received this message because you are subscribed to the Google Groups > "Protocol Buffers" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to protobuf+unsubscr...@googlegroups.com. > To view this discussion visit > https://groups.google.com/d/msgid/protobuf/50117e7f-799a-4019-97c2-8817cf45e929n%40googlegroups.com > <https://groups.google.com/d/msgid/protobuf/50117e7f-799a-4019-97c2-8817cf45e929n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. 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