[BUG] bazel cross-compile protobuf with aarch64-linux-toolchain generating zlib errors.

[ZhenshengLee]

What version of protobuf and what language are you using?

3.14.0+cpp

What operating system (Linux, Windows, ...) and version?

Linux

What runtime / compiler are you using (e.g., python version or gcc version)

aarch64-gcc-linux 9

What did you do?

bazel configs

bazel 7.0.2 with platforms

workspace config

http_archive(
    name = "rules_proto",
    sha256 = "dc3fb206a2cb3441b485eb1e423165b231235a1ea9b031b4433cf7bc1fa460dd",
    strip_prefix = "rules_proto-5.3.0-21.7",
    urls = [
        "https://github.com/bazelbuild/rules_proto/archive/refs/tags/5.3.0-21.7.tar.gz",
    ],
)
load("@rules_proto//proto:repositories.bzl", "rules_proto_dependencies", "rules_proto_toolchains")
rules_proto_dependencies()
rules_proto_toolchains()

cc toolchain config

toolchains/V5L/BUILD

package(default_visibility = ["//visibility:public"])
load("//bazel/toolchains/V5L:V5L_cc_toolchain_config.bzl", "V5L_cc_toolchain_config")

DRIVE_SDK_V5L_TOOLCHAIN_ROOT = "drive/toolchains/aarch64--glibc--stable-2022.03-1"

V5L_cc_toolchain_config(
    name = "V5L_toolchain_config",
    cpu = "aarch64",
    gcc_toolchain_version = "gcc9.3",
)

cc_toolchain(
    name = "gcc_linux_aarch64_toolchain",
    all_files = ":empty",
    compiler_files = ":empty",
    dwp_files = ":empty",
    linker_files = ":empty",
    objcopy_files = "empty",
    strip_files = "empty",
    supports_param_files = 1,
    toolchain_identifier = "aarch64-buildroot-linux-gnu",
    toolchain_config = ":V5L_toolchain_config"
)

toolchain(
    name = "cc_toolchain_for_linux_aarch64",
    toolchain = ":gcc_linux_aarch64_toolchain",
    toolchain_type = "@bazel_tools//tools/cpp:toolchain_type",
    exec_compatible_with = [
        "@platforms//cpu:x86_64",
        "@platforms//os:linux",
    ],
    target_compatible_with = [
        "@platforms//cpu:aarch64",
        "@platforms//os:linux",
    ],
)

filegroup(
    name = "empty",
    srcs = [],
)

filegroup(
    name = "gcc",
    srcs = [
        DRIVE_SDK_V5L_TOOLCHAIN_ROOT + "/bin/aarch64-linux-gcc",
    ],
)

filegroup(
    name = "ar",
    srcs = [
        DRIVE_SDK_V5L_TOOLCHAIN_ROOT + "/bin/aarch64-linux-ar",
    ],
)

filegroup(
    name = "ld",
    srcs = [
        DRIVE_SDK_V5L_TOOLCHAIN_ROOT + "/bin/aarch64-linux-ld.bfd",
    ],
)

filegroup(
    name = "nm",
    srcs = [
        DRIVE_SDK_V5L_TOOLCHAIN_ROOT + "/bin/aarch64-linux-nm",
    ],
)

filegroup(
    name = "objcopy",
    srcs = [
        DRIVE_SDK_V5L_TOOLCHAIN_ROOT + "/bin/aarch64-linux-objcopy",
    ],
)

filegroup(
    name = "objdump",
    srcs = [
        DRIVE_SDK_V5L_TOOLCHAIN_ROOT + "/bin/aarch64-linux-objdump",
    ],
)

filegroup(
    name = "strip",
    srcs = [
        DRIVE_SDK_V5L_TOOLCHAIN_ROOT + "/bin/aarch64-linux-strip",
    ],
)

filegroup(
    name = "as",
    srcs = [
        DRIVE_SDK_V5L_TOOLCHAIN_ROOT + "/bin/aarch64-linux-as",
    ],
)

# filegroup(
#     name = "compiler_pieces",
#     srcs = glob([
#         "usr/lib/gcc-cross/aarch64-buildroot-linux-gnu/9/**",
#         "usr/aarch64-buildroot-linux-gnu/**",
#     ]),
# )

filegroup(
    name = "compiler_components",
    srcs = [
        ":ar",
        ":as",
        ":gcc",
        ":ld",
        ":nm",
        ":objcopy",
        ":objdump",
        ":strip",
    ],
)

toolchains/V5L/V5L_cc_toolchain_config.bzl

load("@bazel_tools//tools/cpp:cc_toolchain_config_lib.bzl",
    "action_config",
    "artifact_name_pattern",
    "env_entry",
    "env_set",
    "feature",
    "feature_set",
    "flag_group",
    "flag_set",
    "make_variable",
    "tool",
    "tool_path",
    "variable_with_value",
    "with_feature_set",
)
load("@bazel_tools//tools/build_defs/cc:action_names.bzl", "ACTION_NAMES")

DRIVE_SDK_V5L_TOOLCHAIN_ROOT = "/drive/toolchains/aarch64--glibc--stable-2022.03-1"
DRIVE_SDK_V5L_SYS_ROOT = "/drive/drive-linux/filesystem/targetfs"

def _impl(ctx):
    toolchain_identifier = "aarch64-buildroot-linux-gnu"

    host_system_name = "x86_64-unknown-linux-gnu"

    target_system_name = "aarch64"

    target_cpu = "aarch64"

    target_libc = "aarch64"

    compiler = "compiler"

    abi_version = "aarch64"

    abi_libc_version = "aarch64"

    cc_target_os = "linux"

    builtin_sysroot = None

    all_compile_actions = [
        ACTION_NAMES.c_compile,
        ACTION_NAMES.cpp_compile,
        ACTION_NAMES.linkstamp_compile,
        ACTION_NAMES.assemble,
        ACTION_NAMES.preprocess_assemble,
        ACTION_NAMES.cpp_header_parsing,
        ACTION_NAMES.cpp_module_compile,
        ACTION_NAMES.cpp_module_codegen,
        ACTION_NAMES.clif_match,
        ACTION_NAMES.lto_backend,
    ]

    all_cpp_compile_actions = [
        ACTION_NAMES.cpp_compile,
        ACTION_NAMES.linkstamp_compile,
        ACTION_NAMES.cpp_header_parsing,
        ACTION_NAMES.cpp_module_compile,
        ACTION_NAMES.cpp_module_codegen,
        ACTION_NAMES.clif_match,
    ]

    preprocessor_compile_actions = [
        ACTION_NAMES.c_compile,
        ACTION_NAMES.cpp_compile,
        ACTION_NAMES.linkstamp_compile,
        ACTION_NAMES.preprocess_assemble,
        ACTION_NAMES.cpp_header_parsing,
        ACTION_NAMES.cpp_module_compile,
        ACTION_NAMES.clif_match,
    ]

    codegen_compile_actions = [
        ACTION_NAMES.c_compile,
        ACTION_NAMES.cpp_compile,
        ACTION_NAMES.linkstamp_compile,
        ACTION_NAMES.assemble,
        ACTION_NAMES.preprocess_assemble,
        ACTION_NAMES.cpp_module_codegen,
        ACTION_NAMES.lto_backend,
    ]

    all_link_actions = [
        ACTION_NAMES.cpp_link_executable,
        ACTION_NAMES.cpp_link_dynamic_library,
        ACTION_NAMES.cpp_link_nodeps_dynamic_library,
    ]

    action_configs = []

    coverage_feature = feature(
        name = "coverage",
        flag_sets = [
            flag_set(
                actions = [
                    ACTION_NAMES.preprocess_assemble,
                    ACTION_NAMES.c_compile,
                    ACTION_NAMES.cpp_compile,
                    ACTION_NAMES.cpp_header_parsing,
                    "c++-header-preprocessing",
                    ACTION_NAMES.cpp_module_compile,
                ],
                flag_groups = [flag_group(flags = ["-fprofile-arcs", "-ftest-coverage"])],
            ),
            flag_set(
                actions = [
                    "c++-link-interface-dynamic-library",
                    ACTION_NAMES.cpp_link_dynamic_library,
                    ACTION_NAMES.cpp_link_executable,
                ],
                flag_groups = [flag_group(flags = ["-lgcov"])],
            ),
        ],
        provides = ["profile"],
    )

    debug_feature = feature(
        name = "debug",
        flag_sets = [
            flag_set (
                actions = [
                    "ACTION_NAMES.c_compile",
                    "ACTION_NAMES.cpp_compile"
                ],
                flag_groups = [
                    flag_group(
                        flags = ["-g"],
                    ),
                ],
            )
        ],
    )

    features = [coverage_feature, debug_feature]

    gcc_include_directories_by_version = {
        "gcc9.3": [
            DRIVE_SDK_V5L_TOOLCHAIN_ROOT + "/aarch64-buildroot-linux-gnu/sysroot/usr/include/",
            DRIVE_SDK_V5L_TOOLCHAIN_ROOT + "/aarch64-buildroot-linux-gnu/include/c++/9.3.0/",
            DRIVE_SDK_V5L_TOOLCHAIN_ROOT + "/aarch64-buildroot-linux-gnu/include/c++/9.3.0/backward",
            DRIVE_SDK_V5L_TOOLCHAIN_ROOT + "/aarch64-buildroot-linux-gnu/include/",
            DRIVE_SDK_V5L_TOOLCHAIN_ROOT + "/lib/gcc/aarch64-buildroot-linux-gnu/9.3.0/include",
            DRIVE_SDK_V5L_TOOLCHAIN_ROOT + "/lib/gcc/aarch64-buildroot-linux-gnu/9.3.0/include-fixed",
        ]
    }

    cxx_builtin_include_directories = gcc_include_directories_by_version[ctx.attr.gcc_toolchain_version]
    artifact_name_patterns = []

    make_variables = []

    tool_paths = [
        tool_path(
            name = "ld",
            path = DRIVE_SDK_V5L_TOOLCHAIN_ROOT + "/bin/aarch64-linux-ld.bfd",
        ),
        tool_path(
            name = "cpp",
            path = DRIVE_SDK_V5L_TOOLCHAIN_ROOT + "/bin/aarch64-linux-cpp",
        ),
        tool_path(
            name = "dwp",
            path = DRIVE_SDK_V5L_TOOLCHAIN_ROOT + "/bin/aarch64-linux-dwp",
        ),
        tool_path(
            name = "gcov",
            path = DRIVE_SDK_V5L_TOOLCHAIN_ROOT + "/bin/aarch64-linux-gcov",
        ),
        tool_path(
            name = "nm",
            path = DRIVE_SDK_V5L_TOOLCHAIN_ROOT + "/bin/aarch64-linux-nm",
        ),
        tool_path(
            name = "objcopy",
            path = DRIVE_SDK_V5L_TOOLCHAIN_ROOT + "/bin/aarch64-linux-objcopy",
        ),
        tool_path(
            name = "objdump",
            path = DRIVE_SDK_V5L_TOOLCHAIN_ROOT + "/bin/aarch64-linux-objdump",
        ),
        tool_path(
            name = "strip",
            path = DRIVE_SDK_V5L_TOOLCHAIN_ROOT + "/bin/aarch64-linux-strip",
        ),
        tool_path(
            name = "gcc",
            path = DRIVE_SDK_V5L_TOOLCHAIN_ROOT + "/bin/aarch64-linux-g++",
        ),
        tool_path(
            name = "ar",
            path = DRIVE_SDK_V5L_TOOLCHAIN_ROOT + "/bin/aarch64-linux-ar",
        ),
    ]


    out = ctx.actions.declare_file(ctx.label.name)
    ctx.actions.write(out, "Fake executable")
    return [
        cc_common.create_cc_toolchain_config_info(
            ctx = ctx,
            features = features,
            action_configs = action_configs,
            artifact_name_patterns = artifact_name_patterns,
            cxx_builtin_include_directories = cxx_builtin_include_directories,
            toolchain_identifier = toolchain_identifier,
            host_system_name = host_system_name,
            target_system_name = target_system_name,
            target_cpu = target_cpu,
            target_libc = target_libc,
            compiler = compiler,
            abi_version = abi_version,
            abi_libc_version = abi_libc_version,
            tool_paths = tool_paths,
            make_variables = make_variables,
            builtin_sysroot = builtin_sysroot,
            cc_target_os = cc_target_os
        ),
        DefaultInfo(
            executable = out,
        ),
    ]

V5L_cc_toolchain_config =  rule(
    implementation = _impl,
    attrs = {
        "cpu": attr.string(mandatory=True, values=["aarch64"]),
        "gcc_toolchain_version": attr.string(mandatory=True, values=["gcc9.3"]),
    },
    provides = [CcToolchainConfigInfo],
    executable = True,
)

bazel command

--platforms=//bazel/platforms:drive_sdk_6081+linux

explain.log is in follow

Build options: --repository_cache=./.cache --noenable_bzlmod --distdir=./bazel/dist --cxxopt='-fdiagnostics-color=always' --cxxopt='-std=c++14' --output_filter='^//' --show_timestamps --force_pic --spawn_strategy=local --verbose_failures --explain=./bazel.log --proto_toolchain_for_cc=@com_google_protobuf//:cc_toolchain --per_file_copt='^modules/.*.cc@-Werror=conversion' --python_path=/usr/bin/python3 --jobs=4 --platforms=//bazel/platforms:drive_sdk_6081+linux --compilation_mode=opt
Executing action 'BazelWorkspaceStatusAction stable-status.txt': unconditional execution is requested.
Executing action 'Compiling src/google/protobuf/wrappers.pb.cc [for tool]': no entry in the cache (action is new).
Executing action 'Compiling zutil.c': no entry in the cache (action is new).
Executing action 'Compiling src/google/protobuf/compiler/cpp/cpp_string_field.cc [for tool]': no entry in the cache (action is new).
Executing action 'Compiling modules/team_demo/module_demo/test/demo_module/demo_test.cpp': no entry in the cache (action is new).
Executing action 'Compiling src/google/protobuf/wrappers.pb.cc': no entry in the cache (action is new).

What did you expect to see

compiling success

What did you see instead?

bazel output

(11:52:51) INFO: Current date is 2024-03-15
(11:52:54) WARNING: /gw_demo/modules/team_demo/module_demo/BUILD:45:13: runfiles symlink modules/team_demo/module_demo/install_module_src -> bazel-out/aarch64-opt/bin/modules/team_demo/module_demo/install_module_src obscured by modules/team_demo/module_demo -> modules/team_demo/module_demo
(11:52:54) WARNING: /gw_demo/modules/team_demo/module_demo/BUILD:45:13: runfiles symlink modules/team_demo/module_demo/install_src -> bazel-out/aarch64-opt/bin/modules/team_demo/module_demo/install_src obscured by modules/team_demo/module_demo -> modules/team_demo/module_demo
(11:52:54) WARNING: /gw_demo/gaos/system_test/test_af/BUILD:38:13: runfiles symlink gaos/system_test/test_af/install_module_src -> bazel-out/aarch64-opt/bin/gaos/system_test/test_af/install_module_src obscured by gaos/system_test/test_af -> gaos/system_test/test_af
(11:52:54) WARNING: /gw_demo/gaos/system_test/test_af/BUILD:38:13: runfiles symlink gaos/system_test/test_af/install_src -> bazel-out/aarch64-opt/bin/gaos/system_test/test_af/install_src obscured by gaos/system_test/test_af -> gaos/system_test/test_af
(11:52:54) WARNING: /gw_demo/gaos/system_test/test_af/BUILD:38:13: runfiles symlink gaos/system_test/test_af/install_header_src -> bazel-out/aarch64-opt/bin/gaos/system_test/test_af/install_header_src obscured by gaos/system_test/test_af -> gaos/system_test/test_af
(11:52:54) WARNING: /gw_demo/modules/team_demo/module_demo/BUILD:45:13: runfiles symlink modules/team_demo/module_demo/install_header_src -> bazel-out/aarch64-opt/bin/modules/team_demo/module_demo/install_header_src obscured by modules/team_demo/module_demo -> modules/team_demo/module_demo
(11:52:57) INFO: Analyzed 24 targets (50 packages loaded, 18664 targets configured).
(11:53:52) ERROR: /home/zs/.cache/bazel/_bazel_zs/2c098eac6c684e1fabebb74f5f4483bd/external/zlib/BUILD.bazel:37:11: Compiling adler32.c failed: (Exit 1): aarch64-linux-g++ failed: error executing CppCompile command (from target @@zlib//:zlib) 
  (cd /home/zs/.cache/bazel/_bazel_zs/2c098eac6c684e1fabebb74f5f4483bd/execroot/gaos && \
  exec env - \
    LD_LIBRARY_PATH=/usr/local/cuda/lib64:/usr/local/lib:/usr/lib/x86_64-linux-gnu:/opt/rti.com/rti_connext_dds-6.0.1/lib/x64Linux4gcc7.3.0:/opt/ros/humble/opt/rviz_ogre_vendor/lib:/opt/ros/humble/lib/x86_64-linux-gnu:/opt/ros/humble/lib \
    PATH=/usr/local/cuda/bin:/opt/rti.com/rti_connext_dds-6.0.1/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/opt/ros/humble/bin \
    PWD=/proc/self/cwd \
  /drive/toolchains/aarch64--glibc--stable-2022.03-1/bin/aarch64-linux-g++ -MD -MF bazel-out/aarch64-opt/bin/external/zlib/_objs/zlib/adler32.pic.d '-frandom-seed=bazel-out/aarch64-opt/bin/external/zlib/_objs/zlib/adler32.pic.o' -fPIC -iquote external/zlib -iquote bazel-out/aarch64-opt/bin/external/zlib -isystem external/zlib/zlib/include -isystem bazel-out/aarch64-opt/bin/external/zlib/zlib/include -Wno-unused-variable -Wno-implicit-function-declaration -c external/zlib/adler32.c -o bazel-out/aarch64-opt/bin/external/zlib/_objs/zlib/adler32.pic.o)
# Configuration: c76ccfe1b039246c80f6731290fc527500e3a40b12634d52de550b9f7488be3f
# Execution platform: @@local_config_platform//:host
cc1plus: warning: command line option '-Wno-implicit-function-declaration' is valid for C/ObjC but not for C++
external/zlib/adler32.c:63:25: error: 'uLong adler32_z' redeclared as different kind of entity
   63 | uLong ZEXPORT adler32_z(adler, buf, len)
      |                         ^~~~~
In file included from external/zlib/zutil.h:22,
                 from external/zlib/adler32.c:8:
external/zlib/zlib.h:1709:23: note: previous declaration 'uLong adler32_z(uLong, const Bytef*, z_size_t)'
 1709 | ZEXTERN uLong ZEXPORT adler32_z OF((uLong adler, const Bytef *buf,
      |                       ^~~~~~~~~
external/zlib/adler32.c:63:25: error: 'adler' was not declared in this scope; did you mean 'adler32'?
   63 | uLong ZEXPORT adler32_z(adler, buf, len)
      |                         ^~~~~
      |                         adler32
external/zlib/adler32.c:63:32: error: 'buf' was not declared in this scope
   63 | uLong ZEXPORT adler32_z(adler, buf, len)
      |                                ^~~
external/zlib/adler32.c:63:37: error: 'len' was not declared in this scope; did you mean 'mblen'?
   63 | uLong ZEXPORT adler32_z(adler, buf, len)
      |                                     ^~~
      |                                     mblen
external/zlib/adler32.c:67:1: error: expected unqualified-id before '{' token
   67 | {
      | ^
external/zlib/adler32.c:134:23: error: 'uLong adler32' redeclared as different kind of entity
  134 | uLong ZEXPORT adler32(adler, buf, len)
      |                       ^~~~~
In file included from external/zlib/zutil.h:22,
                 from external/zlib/adler32.c:8:
external/zlib/zlib.h:1689:23: note: previous declaration 'uLong adler32(uLong, const Bytef*, uInt)'
 1689 | ZEXTERN uLong ZEXPORT adler32 OF((uLong adler, const Bytef *buf, uInt len));
      |                       ^~~~~~~
external/zlib/adler32.c:134:23: error: 'adler' was not declared in this scope; did you mean 'adler32'?
  134 | uLong ZEXPORT adler32(adler, buf, len)
      |                       ^~~~~
      |                       adler32
external/zlib/adler32.c:136:18: error: redefinition of 'const Bytef* buf'
  136 |     const Bytef *buf;
      |                  ^~~
external/zlib/adler32.c:65:18: note: 'const Bytef* buf' previously declared here
   65 |     const Bytef *buf;
      |                  ^~~
external/zlib/adler32.c:137:10: error: conflicting declaration 'uInt len'
  137 |     uInt len;
      |          ^~~
external/zlib/adler32.c:66:14: note: previous declaration as 'z_size_t len'
   66 |     z_size_t len;
      |              ^~~
external/zlib/adler32.c:138:1: error: expected unqualified-id before '{' token
  138 | {
      | ^
external/zlib/adler32.c:143:30: error: 'uLong adler32_combine_' redeclared as different kind of entity
  143 | local uLong adler32_combine_(adler1, adler2, len2)
      |                              ^~~~~~
external/zlib/adler32.c:10:13: note: previous declaration 'uLong adler32_combine_(uLong, uLong, off64_t)'
   10 | local uLong adler32_combine_ OF((uLong adler1, uLong adler2, z_off64_t len2));
      |             ^~~~~~~~~~~~~~~~
external/zlib/adler32.c:143:30: error: 'adler1' was not declared in this scope; did you mean 'adler32'?
  143 | local uLong adler32_combine_(adler1, adler2, len2)
      |                              ^~~~~~
      |                              adler32
external/zlib/adler32.c:143:38: error: 'adler2' was not declared in this scope; did you mean 'adler32'?
  143 | local uLong adler32_combine_(adler1, adler2, len2)
      |                                      ^~~~~~
      |                                      adler32
external/zlib/adler32.c:143:46: error: 'len2' was not declared in this scope; did you mean 'len'?
  143 | local uLong adler32_combine_(adler1, adler2, len2)
      |                                              ^~~~
      |                                              len
external/zlib/adler32.c:147:1: error: expected unqualified-id before '{' token
  147 | {
      | ^
external/zlib/adler32.c:172:31: error: 'uLong adler32_combine' redeclared as different kind of entity
  172 | uLong ZEXPORT adler32_combine(adler1, adler2, len2)
      |                               ^~~~~~
In file included from external/zlib/zutil.h:22,
                 from external/zlib/adler32.c:8:
external/zlib/zlib.h:1897:26: note: previous declaration 'uLong adler32_combine(uLong, uLong, off_t)'
 1897 |    ZEXTERN uLong ZEXPORT adler32_combine OF((uLong, uLong, z_off_t));
      |                          ^~~~~~~~~~~~~~~
external/zlib/adler32.c:172:31: error: 'adler1' was not declared in this scope; did you mean 'adler2'?
  172 | uLong ZEXPORT adler32_combine(adler1, adler2, len2)
      |                               ^~~~~~
      |                               adler2
external/zlib/adler32.c:174:11: error: redefinition of 'uLong adler2'
  174 |     uLong adler2;
      |           ^~~~~~
external/zlib/adler32.c:145:11: note: 'uLong adler2' previously declared here
  145 |     uLong adler2;
      |           ^~~~~~
external/zlib/adler32.c:175:13: error: redefinition of 'off_t len2'
  175 |     z_off_t len2;
      |             ^~~~
external/zlib/adler32.c:146:15: note: 'off64_t len2' previously declared here
  146 |     z_off64_t len2;
      |               ^~~~
external/zlib/adler32.c:176:1: error: expected unqualified-id before '{' token
  176 | {
      | ^
external/zlib/adler32.c:180:33: error: 'uLong adler32_combine64' redeclared as different kind of entity
  180 | uLong ZEXPORT adler32_combine64(adler1, adler2, len2)
      |                                 ^~~~~~
In file included from external/zlib/zutil.h:22,
                 from external/zlib/adler32.c:8:
external/zlib/zlib.h:1860:26: note: previous declaration 'uLong adler32_combine64(uLong, uLong, off64_t)'
 1860 |    ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off64_t));
      |                          ^~~~~~~~~~~~~~~~~
external/zlib/adler32.c:180:33: error: 'adler1' was not declared in this scope; did you mean 'adler2'?
  180 | uLong ZEXPORT adler32_combine64(adler1, adler2, len2)
      |                                 ^~~~~~
      |                                 adler2
external/zlib/adler32.c:182:11: error: redefinition of 'uLong adler2'
  182 |     uLong adler2;
      |           ^~~~~~
external/zlib/adler32.c:145:11: note: 'uLong adler2' previously declared here
  145 |     uLong adler2;
      |           ^~~~~~
external/zlib/adler32.c:183:15: error: redefinition of 'off64_t len2'
  183 |     z_off64_t len2;
      |               ^~~~
external/zlib/adler32.c:146:15: note: 'off64_t len2' previously declared here
  146 |     z_off64_t len2;
      |               ^~~~
external/zlib/adler32.c:184:1: error: expected unqualified-id before '{' token
  184 | {
      | ^
(11:53:53) INFO: Elapsed time: 61.160s, Critical Path: 11.92s
(11:53:53) INFO: 204 processes: 88 internal, 116 local.
(11:53:53) ERROR: Build did NOT complete successfully

Anything else we should know about your project / environment

extra infomation

only linking with protobuf lib causing the compiling error, which means only cc_binary causing the issue.

proto_library(
    name = "point_proto",
    srcs = ["proto/geometry_msgs/Point.proto"],
)
cc_proto_library(
    name = "point_cc_proto",
    deps = [":point_proto"],
)

proto_library(
    name = "freespace_boundary_proto",
    srcs = ["proto/perception_msgs/FreeSpaceBoundary.proto"],
    deps = [
        ":point_proto"
    ],
)
cc_proto_library(
    name = "freespace_boundary_cc_proto",
    deps = [":freespace_boundary_proto"],
)

# zs: todo: bug: com_google_protobuf cross-compile link failed.
gaos_cc_binary(
    name = "test_proto",
    srcs = ["test/test_proto.cpp"],
    deps = [
        ":point_cc_proto",
        "@com_google_protobuf//:protobuf",
    ],
)

[ZhenshengLee]

track with bazelbuild/rules_proto#208

[ZhenshengLee]

the issue is solved by change compiler of create_cc_toolchain_config_info from g++ to gcc adding -lstdc++, the toolchain config is based on https://github.com/hexdae/bazel-arm-none-eabi/blob/master/toolchain/config.bzl