abseil link错误

[qycyfjy]

Xmake 版本

2.7.2+202210122221

操作系统版本和架构

Linux MFK 5.10.102.1-microsoft-standard-WSL2 #1 SMP Wed Mar 2 00:30:59 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

描述问题

引用abseil包，链接失败，我试了"abseil 20220623.0"和"abseil master"都有这个问题, debug下也是同样的错误，cmake正常

期待的结果

链接成功

工程配置

No response

附加信息和错误日志

fde9@MFK:~/testabseil$ xmake -vD
checking for gcc ... /usr/bin/gcc
checkinfo: cannot runv(dmd --version), No such file or directory
checking for dmd ... no
checkinfo: cannot runv(ldc2 --version), No such file or directory
checking for ldc2 ... no
checkinfo: cannot runv(gdc --version), No such file or directory
checking for gdc ... no
checkinfo: cannot runv(zig version), No such file or directory
checking for zig ... no
checkinfo: cannot runv(zig version), No such file or directory
checking for zig ... no
checking for unzip ... /usr/bin/unzip
checking for git ... /usr/bin/git
checking for gzip ... /usr/bin/gzip
checking for tar ... /usr/bin/tar
/usr/bin/git rev-parse HEAD
checking for cmake ... /usr/bin/cmake
checking for cmake ... /usr/bin/cmake
finding abseil from xmake ..
checking for xmake::abseil ... abseil master
checking for gcc ... /usr/bin/gcc
checking for the c++ compiler (cxx) ... gcc
checking for /usr/bin/gcc ... ok
checking for flags (-fPIC) ... ok
> gcc "-fPIC"
checking for flags (-fvisibility-inlines-hidden) ... ok
> gcc "-fvisibility-inlines-hidden"
checking for flags (-O3) ... ok
> gcc "-O3"
checking for flags (-DNDEBUG) ... ok
> gcc "-DNDEBUG"
[ 25%]: cache compiling.release src/main.cpp
/usr/bin/gcc -c -m64 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -std=c++17 -isystem /home/fde9/.xmake/packages/a/abseil/master/4e0143c97b65425b855ad5fd03038b6a/include -DNDEBUG -o build/.objs/abseilxmake/linux/x86_64/release/src/main.cpp.o src/main.cpp
checking for flags (-MMD -MF) ... ok
> gcc "-MMD" "-MF" "/dev/null"
checking for flags (-fdiagnostics-color=always) ... ok
> gcc "-fdiagnostics-color=always"
checking for g++ ... /usr/bin/g++
checking for the linker (ld) ... g++
checking for /usr/bin/g++ ... ok
checking for flags (-fPIC) ... ok
> g++ "-fPIC"
[ 50%]: linking.release abseilxmake
/usr/bin/g++ -o build/linux/x86_64/release/abseilxmake build/.objs/abseilxmake/linux/x86_64/release/src/main.cpp.o -m64 -L/home/fde9/.xmake/packages/a/abseil/master/4e0143c97b65425b855ad5fd03038b6a/lib -s -labsl_random_internal_distribution_test_util -labsl_synchronization -labsl_log_severity -labsl_flags_parse -labsl_hash -labsl_leak_check -labsl_status -labsl_strerror -labsl_flags_commandlineflag -labsl_cord_internal -labsl_cord -labsl_raw_logging_internal -labsl_random_seed_gen_exception -labsl_log_internal_check_op -labsl_flags_program_name -labsl_low_level_hash -labsl_demangle_internal -labsl_cordz_sample_token -labsl_flags_usage_internal -labsl_log_internal_message -labsl_periodic_sampler -labsl_spinlock_wait -labsl_flags_reflection -labsl_log_internal_log_sink_set -labsl_random_internal_randen -labsl_log_flags -labsl_raw_hash_set -labsl_random_internal_pool_urbg -labsl_die_if_null -labsl_str_format_internal -labsl_random_internal_seed_material -labsl_examine_stack -labsl_malloc_internal -labsl_scoped_set_env -labsl_strings -labsl_base -labsl_bad_variant_access -labsl_flags_config -labsl_debugging_internal -labsl_flags_internal -labsl_civil_time -labsl_log_internal_globals -labsl_int128 -labsl_statusor -labsl_strings_internal -labsl_log_internal_format -labsl_time_zone -labsl_random_seed_sequences -labsl_flags_commandlineflag_internal -labsl_flags_marshalling -labsl_flags_private_handle_accessor -labsl_random_distributions -labsl_flags_usage -labsl_hashtablez_sampler -labsl_flags -labsl_log_internal_conditions -labsl_stacktrace -labsl_log_initialize -labsl_cordz_handle -labsl_log_globals -labsl_random_internal_randen_hwaes -labsl_log_entry -labsl_random_internal_randen_slow -labsl_log_sink -labsl_graphcycles_internal -labsl_time -labsl_cordz_functions -labsl_bad_optional_access -labsl_exponential_biased -labsl_city -labsl_bad_any_cast_impl -labsl_symbolize -labsl_cordz_info -labsl_random_internal_platform -labsl_throw_delegate -labsl_failure_signal_handler -labsl_random_internal_randen_hwaes_impl
error: @programdir/modules/private/async/runjobs.lua:256: @programdir/actions/build/kinds/binary.lua:74: @programdir/core/sandbox/modules/os.lua:267: /usr/bin/ld: /home/fde9/.xmake/packages/a/abseil/master/4e0143c97b65425b855ad5fd03038b6a/lib/libabsl_strings.a(numbers.cc.o): in function `absl::SimpleAtob(std::basic_string_view<char, std::char_traits<char> >, bool*)':
numbers.cc:(.text+0x979): undefined reference to `absl::raw_log_internal::RawLog(absl::LogSeverity, char const*, int, char const*, ...)'
collect2: error: ld returned 1 exit status

stack traceback:
    [C]: in function 'error'
    [@programdir/core/base/os.lua:897]:
    [@programdir/core/sandbox/modules/os.lua:267]: in function 'runv'
    [@programdir/modules/core/tools/gcc.lua:376]:
    [C]: in function 'xpcall'
    [@programdir/core/base/utils.lua:280]:
    [@programdir/actions/build/kinds/binary.lua:74]: in function 'callback'
    [@programdir/modules/core/project/depend.lua:193]: in function 'on_changed'
    [@programdir/actions/build/kinds/binary.lua:55]: in function '_do_link_target'
    [@programdir/actions/build/kinds/binary.lua:102]:
    [@programdir/actions/build/kinds/binary.lua:129]: in function '_link_target'
    [@programdir/actions/build/kinds/binary.lua:157]: in function 'jobfunc'
    [@programdir/modules/private/async/runjobs.lua:232]:
    [C]: in function 'xpcall'
    [@programdir/core/base/utils.lua:280]: in function 'trycall'
    [@programdir/core/sandbox/modules/try.lua:117]: in function 'try'
    [@programdir/modules/private/async/runjobs.lua:218]: in function 'cotask'
    [@programdir/core/base/scheduler.lua:388]:

stack traceback:
        [C]: in function 'error'
        @programdir/core/base/os.lua:897: in function 'base/os.raiselevel'
        (...tail calls...)
        @programdir/modules/private/async/runjobs.lua:256: in field 'catch'
        @programdir/core/sandbox/modules/try.lua:123: in global 'try'
        @programdir/modules/private/async/runjobs.lua:218: in upvalue 'cotask'
        @programdir/core/base/scheduler.lua:388: in function <@programdir/core/base/scheduler.lua:385>

[waruqi]

贴下你这 main 里面的测试代码

[qycyfjy]

贴下你这 main 里面的测试代码

简单的一次函数调用

#include <iostream>
#include "absl/strings/numbers.h"

using namespace std;

int main(int argc, char** argv)
{
    int result = 0;
    auto a = absl::SimpleAtoi("123", &result);
    cout << result << endl;
    return 0;
}

[waruqi]

再试下

xrepo update-repo
xrepo remove --all -y abseil
xmake f -c
xmake

[qycyfjy]

ok了，十分感谢

[qycyfjy]

#include "absl/container/flat_hash_map.h"
#include <iostream>

int main(int argc, char **argv) {
  absl::flat_hash_map<int, int> map;
  if (map.contains(1)) {
    return 1;
  }
  std::cout << "not found" << std::endl;
  return 0;
}

也不能正常编译的，原因

 undefined reference to `absl::lts_20220623::hash_internal::CityHash32(char const*, unsigned long)'

看了下abseil仓库absl/container下的的CMakeLists.txt，flat_hash_map依赖absl_hash，absl_hash依赖absl_city
我将absl_hash调整到absl_city之前，可以编译通过

我对cmake不熟悉，只大致看了下它这些子组件之间声明的依赖（例如container），感觉很复杂，不太好手动清理出来一个链接顺序。

在原生使用cmake的情况下，写下absl::***它可能会自动顺着声明处理？xmake下用什么解决呢？配置下cmake提前打包出来一个libabsl.a之类的完整大包？

[waruqi]

我现在只是稍微调整了下顺序，你可以提个 pr 过来 继续改进包里面 links 的顺序。。

xmake-repo/packages/a/abseil/xmake.lua

Line 17 in 0ebe60d

add_links(

在原生使用cmake的情况下，写下absl::***它可能会自动顺着声明处理？xmake下用什么解决呢？配置下cmake提前

没用，对外导出 只能自己配置，xmake 不解析 cmakelists

[waruqi]

merge了，再试试

[qycyfjy]

可以了