[package] boost/1.84.0: Fails to compile with GCC 10 and conan 2

[CJCombrink]

Description

Boost fails to compile with conan 2 and gcc 10.
I get the following error:

/opt/rh/gcc-toolset-10/root/usr/include/c++/10/coroutine:295:2: error: #error "the coroutine header requires -fcoroutines"
  295 | #error "the coroutine header requires -fcoroutines"
...

I see there is an issue #22816 and PR #22817 but that looks like conan 1

Package and Environment Details

• Package Name/Version: boost/1.84.0
• Operating System+version: CentOS Stream
• Compiler+version: GCC 10
• Conan version: Conan 2.0.17
• Python version: Python 3.9.13

Conan profile

conan profile show -pr default
Host profile:
[settings]
arch=x86_64
build_type=Release
compiler=gcc
compiler.cppstd=20
compiler.libcxx=libstdc++11
compiler.version=10
os=Linux
os.distro=centos

Build profile:
[settings]
arch=x86_64
build_type=Release
compiler=gcc
compiler.cppstd=20
compiler.libcxx=libstdc++11
compiler.version=10
os=Linux
os.distro=centos

Steps to reproduce

My conanfile

[tool_requires]
thrift/0.17.0

My install command:

conan install .. --build=missing

Logs

Click to expand log

conan install .. --build=missing

======== Input profiles ========
Profile host:
[settings]
arch=x86_64
build_type=Release
compiler=gcc
compiler.cppstd=20
compiler.libcxx=libstdc++11
compiler.version=10
os=Linux
os.distro=centos

Profile build:
[settings]
arch=x86_64
build_type=Release
compiler=gcc
compiler.cppstd=20
compiler.libcxx=libstdc++11
compiler.version=10
os=Linux
os.distro=centos


======== Computing dependency graph ========
boost/1.84.0: Not found in local cache, looking in remotes...
boost/1.84.0: Checking remote: conancenter
boost/1.84.0: Downloaded recipe revision 7604ce1e7485780469dffb6430f232ea
Graph root
    conanfile.txt: /home/Buildit/test_conan/conanfile.txt
Build requirements
    b2/4.10.1#a41eecb267963ddf518e3c177eae60e1 - Cache
    bison/3.8.2#ed1ba0c42d2ab7ab64fc3a62e9ecc673 - Cache
    boost/1.84.0#7604ce1e7485780469dffb6430f232ea - Downloaded (conancenter)
    bzip2/1.0.8#457c272f7da34cb9c67456dd217d36c4 - Cache
    flex/2.6.4#e35bc44b3fcbcd661e0af0dc5b5b1ad4 - Cache
    libbacktrace/cci.20210118#ec1aa63bbc10145c6a299e68e711670c - Cache
    libevent/2.1.12#b6333a128075d75a3614bd8418bf2099 - Cache
    m4/1.4.19#b38ced39a01e31fef5435bc634461fd2 - Cache
    openssl/1.1.1s#3eeebc156917046ee80533dbbb8f4671 - Cache
    thrift/0.17.0#fba5a235281b213989a7e7feab0c5ebf - Cache
    zlib/1.3.1#af8f2ef3d8e0fddf1975281d7fe43bf6 - Cache
Resolved version ranges
    openssl/[>=1.1 <4]: openssl/1.1.1s
    zlib/[>=1.2.11 <2]: zlib/1.3.1

======== Computing necessary packages ========
boost/1.84.0: Checking 7 compatible configurations
boost/1.84.0: Compatible configurations not found in cache, checking servers
boost/1.84.0: 'c1cc6a2c29a2194638ec9daa2ccf71f99355b99c': compiler.cppstd=11
boost/1.84.0: '368033e369daf831b241113011d04028bfc1ef0a': compiler.cppstd=gnu11
boost/1.84.0: '4f0953ee63b156ab1550e3ce94a16eb652f8e797': compiler.cppstd=14
boost/1.84.0: 'ce57e463d6f1b2767273578a20f23d2252ec09a9': compiler.cppstd=gnu14
boost/1.84.0: '72df47e19b2049aef233776a27bb06badfddbeb2': compiler.cppstd=17
boost/1.84.0: '56699eaee6c56ad765424450bf97c7beaa0b0b9d': compiler.cppstd=gnu17
boost/1.84.0: 'f3aa7507f5e4bffc8cebed02154b4b10498440e2': compiler.cppstd=gnu20
thrift/0.17.0: Checking 9 compatible configurations
thrift/0.17.0: Compatible configurations not found in cache, checking servers
thrift/0.17.0: 'ccd3d37f8e227a65a39a0556f2bee477909e3648': compiler.cppstd=98
thrift/0.17.0: '134a8932f45963abac4f895658f3b6a08487fb20': compiler.cppstd=gnu98
thrift/0.17.0: 'b5aac7a394bb9e21bd0883fd2ec6f40b6792373a': compiler.cppstd=11
thrift/0.17.0: 'cf5c63f9828c2c6231170722e2b5c6d337114f6a': compiler.cppstd=gnu11
thrift/0.17.0: 'd4781c9788d7a3510f1ecdf5e5eef0cc26331bf9': compiler.cppstd=14
thrift/0.17.0: 'd19b29611ce8c2e5d4f2f909b4918ae0bbb52cd0': compiler.cppstd=gnu14
thrift/0.17.0: '3a73ceb58c84f61bbac281fa5a65f1010ad0376e': compiler.cppstd=17
thrift/0.17.0: '951d6268f258d1e89e833906f617ea5866896553': compiler.cppstd=gnu17
thrift/0.17.0: 'bbfd6d1b0615c14f1c6e4403e04e290f73544211': compiler.cppstd=gnu20
Build requirements
    b2/4.10.1#a41eecb267963ddf518e3c177eae60e1:380d17d4ad565b724e68c51e836a85ba9e4472f3#04811dc2503d49b5a8970ddef5662034 - Cache
    bison/3.8.2#ed1ba0c42d2ab7ab64fc3a62e9ecc673:508251cb4d2a1e69157fafb746f0c89f44c05700#79d68e9c218de0311fb1c25c9d1e049f - Cache
    boost/1.84.0#7604ce1e7485780469dffb6430f232ea:2056b48c913c97ff66e4064b9458755238518e0f - Build
    bzip2/1.0.8#457c272f7da34cb9c67456dd217d36c4:cd54a488ac0cf53426ad9eb3a70c27e566fd2901#3921492dcc7d6df6e8371258891ab3e7 - Cache
    flex/2.6.4#e35bc44b3fcbcd661e0af0dc5b5b1ad4:4a6ea1ff9dc85792b60efbd6799c6014262be19c#70c43b8fdafeddd5e7df6bb2c28fff9a - Cache
    libbacktrace/cci.20210118#ec1aa63bbc10145c6a299e68e711670c:4a6ea1ff9dc85792b60efbd6799c6014262be19c#5882840ae05dc665263016a77b276952 - Cache
    libevent/2.1.12#b6333a128075d75a3614bd8418bf2099:6d3ebb9d6d856b4044c4502a6820817e705ce26b#21c3f9d14a1d1621544ed88a733cf893 - Cache
    m4/1.4.19#b38ced39a01e31fef5435bc634461fd2:96f4e62ae01514da609a256e14e90bf7ae590383#cf4bf24a1786db7805cc91fd351f1231 - Cache
    openssl/1.1.1s#3eeebc156917046ee80533dbbb8f4671:66b58fc58dbaa682cb127d9555d70a0837ceb64b#0defad7cdec736e08cf814664e2d91a7 - Cache
    thrift/0.17.0#fba5a235281b213989a7e7feab0c5ebf:406afd9a705bf49fa583ccd19be3c367db39af0d - Build
    zlib/1.3.1#af8f2ef3d8e0fddf1975281d7fe43bf6:4a6ea1ff9dc85792b60efbd6799c6014262be19c#b7bbc24bdbcc3a387c0c2f57debd3166 - Cache

======== Installing packages ========
b2/4.10.1: Already installed! (1 of 11)
bzip2/1.0.8: Already installed! (2 of 11)
libbacktrace/cci.20210118: Already installed! (3 of 11)
m4/1.4.19: Already installed! (4 of 11)
openssl/1.1.1s: Already installed! (5 of 11)
zlib/1.3.1: Already installed! (6 of 11)
flex/2.6.4: Already installed! (7 of 11)
flex/2.6.4: Appending PATH environment variable: /home/Buildit/.conan2/p/b/flex25a6fd5c95408/p/bin
flex/2.6.4: Setting LEX environment variable: /home/Buildit/.conan2/p/b/flex25a6fd5c95408/p/bin/flex
boost/1.84.0: Sources downloaded from 'conancenter'
boost/1.84.0: Calling source() in /home/Buildit/.conan2/p/boostaa9b6a24cae5d/s/src
boost/1.84.0: Downloaded 122.9MB 99% boost_1_84_0.tar.bz2
boost/1.84.0: Apply patch (conan): Optional flag to specify iconv from either libc of libiconv
boost/1.84.0: Apply patch (official): Fix compilation with cppstd=20 on libcxx platforms (e.g. MacOS)

-------- Installing package boost/1.84.0 (8 of 11) --------
boost/1.84.0: Building from source
boost/1.84.0: Package boost/1.84.0:2056b48c913c97ff66e4064b9458755238518e0f
boost/1.84.0: Building your package in /home/Buildit/.conan2/p/b/boost0e147afede3cc/b
boost/1.84.0: Calling generate()
boost/1.84.0: Generators folder: /home/Buildit/.conan2/p/b/boost0e147afede3cc/b/build-release/conan
boost/1.84.0: Generating aggregated env files
boost/1.84.0: Generated aggregated env files: ['conanbuild.sh', 'conanrun.sh']
boost/1.84.0: Calling build()
boost/1.84.0: WARN: replace_in_file didn't find pattern '/* thread_local */' in '/home/Buildit/.conan2/p/boostaa9b6a24cae5d/s/src/boost/stacktrace/detail/libbacktrace_impls.hpp' file.
boost/1.84.0: WARN: replace_in_file didn't find pattern '/* static __thread */' in '/home/Buildit/.conan2/p/boostaa9b6a24cae5d/s/src/boost/stacktrace/detail/libbacktrace_impls.hpp' file.
boost/1.84.0: WARN: replace_in_file didn't find pattern 'local generic-os = [ set.difference $(all-os) : aix darwin vxworks solaris osf hpux ] ;' in '/home/Buildit/.conan2/p/boostaa9b6a24cae5d/s/src/tools/build/src/tools/gcc.jam' file.
boost/1.84.0: WARN: replace_in_file didn't find pattern 'local no-threading = android beos haiku sgi darwin vxworks ;' in '/home/Buildit/.conan2/p/boostaa9b6a24cae5d/s/src/tools/build/src/tools/gcc.jam' file.
boost/1.84.0: WARN: Patching user-config.jam
boost/1.84.0: WARN:
using zlib : 1.3.1 : <include>"/home/Buildit/.conan2/p/b/zlib7fa3ddac0aa29/p/include" <search>"/home/Buildit/.conan2/p/b/zlib7fa3ddac0aa29/p/lib" <name>z ;
using bzip2 : 1.0.8 : <include>"/home/Buildit/.conan2/p/b/bzip2a235f8394ee18/p/include" <search>"/home/Buildit/.conan2/p/b/bzip2a235f8394ee18/p/lib" <name>bz2 ;
using "gcc" :  :  "/opt/rh/gcc-toolset-10/root/usr/bin/g++" :
<compileflags>"-I/home/Buildit/.conan2/p/b/libbab12e5617427b1/p/include" <linkflags>"-L/home/Buildit/.conan2/p/b/libbab12e5617427b1/p/lib"  ;
boost/1.84.0: WARN: b2 -q numa=on target-os=linux architecture=x86 address-model=64 binary-format=elf abi=sysv --layout=system --user-config=/home/Buildit/.conan2/p/boostaa9b6a24cae5d/s/src/tools/build/user-config.jam -sNO_ZLIB=0 -sNO_BZIP2=0 -sNO_LZMA=1 -sNO_ZSTD=1 boost.locale.icu=off --disable-icu boost.locale.iconv=on boost.locale.iconv.lib=libc threading=multi visibility=hidden link=static variant=release --with-atomic --with-chrono --with-cobalt --with-container --with-context --with-contract --with-coroutine --with-date_time --with-exception --with-fiber --with-filesystem --with-graph --with-iostreams --with-json --with-locale --with-log --with-math --with-nowide --with-program_options --with-random --with-regex --with-serialization --with-stacktrace --with-system --with-test --with-thread --with-timer --with-type_erasure --with-url --with-wave toolset=gcc cxxstd=20 define=_GLIBCXX_USE_CXX11_ABI=1 pch=on -sLIBBACKTRACE_PATH=/home/Buildit/.conan2/p/b/libbab12e5617427b1/p linkflags="" cxxflags="-fPIC -DBOOST_STACKTRACE_ADDR2LINE_LOCATION=/usr/bin/addr2line" install --prefix=/home/Buildit/.conan2/p/b/boost0e147afede3cc/p -j32 --abbreviate-paths -d0 --debug-configuration --build-dir="/home/Buildit/.conan2/p/b/boost0e147afede3cc/b/build-release"
boost/1.84.0: RUN: b2 -q numa=on target-os=linux architecture=x86 address-model=64 binary-format=elf abi=sysv --layout=system --user-config=/home/Buildit/.conan2/p/boostaa9b6a24cae5d/s/src/tools/build/user-config.jam -sNO_ZLIB=0 -sNO_BZIP2=0 -sNO_LZMA=1 -sNO_ZSTD=1 boost.locale.icu=off --disable-icu boost.locale.iconv=on boost.locale.iconv.lib=libc threading=multi visibility=hidden link=static variant=release --with-atomic --with-chrono --with-cobalt --with-container --with-context --with-contract --with-coroutine --with-date_time --with-exception --with-fiber --with-filesystem --with-graph --with-iostreams --with-json --with-locale --with-log --with-math --with-nowide --with-program_options --with-random --with-regex --with-serialization --with-stacktrace --with-system --with-test --with-thread --with-timer --with-type_erasure --with-url --with-wave toolset=gcc cxxstd=20 define=_GLIBCXX_USE_CXX11_ABI=1 pch=on -sLIBBACKTRACE_PATH=/home/Buildit/.conan2/p/b/libbab12e5617427b1/p linkflags="" cxxflags="-fPIC -DBOOST_STACKTRACE_ADDR2LINE_LOCATION=/usr/bin/addr2line" install --prefix=/home/Buildit/.conan2/p/b/boost0e147afede3cc/p -j32 --abbreviate-paths -d0 --debug-configuration --build-dir="/home/Buildit/.conan2/p/b/boost0e147afede3cc/b/build-release"
notice: found boost-build.jam at /home/Buildit/.conan2/p/boostaa9b6a24cae5d/s/src/boost-build.jam
notice: loading B2 from /home/Buildit/.conan2/p/b/b2cd7cfcf29177e/p/bin/.b2/kernel/bootstrap.jam
notice: Searching '/etc' '/home/Buildit' '/home/Buildit/.conan2/p/b/b2cd7cfcf29177e/p/bin/.b2/kernel' '/home/Buildit/.conan2/p/b/b2cd7cfcf29177e/p/bin/.b2/util' '/home/Buildit/.conan2/p/b/b2cd7cfcf29177e/p/bin/.b2/build' '/home/Buildit/.conan2/p/b/b2cd7cfcf29177e/p/bin/.b2/tools' '/home/Buildit/.conan2/p/b/b2cd7cfcf29177e/p/bin/.b2/contrib' '/home/Buildit/.conan2/p/b/b2cd7cfcf29177e/p/bin/.b2/.' for site-config configuration file 'site-config.jam'.
notice: Configuration file 'site-config.jam' not found in '/etc' '/home/Buildit' '/home/Buildit/.conan2/p/b/b2cd7cfcf29177e/p/bin/.b2/kernel' '/home/Buildit/.conan2/p/b/b2cd7cfcf29177e/p/bin/.b2/util' '/home/Buildit/.conan2/p/b/b2cd7cfcf29177e/p/bin/.b2/build' '/home/Buildit/.conan2/p/b/b2cd7cfcf29177e/p/bin/.b2/tools' '/home/Buildit/.conan2/p/b/b2cd7cfcf29177e/p/bin/.b2/contrib' '/home/Buildit/.conan2/p/b/b2cd7cfcf29177e/p/bin/.b2/.'.
notice: Loading explicitly specified user configuration file:
    /home/Buildit/.conan2/p/boostaa9b6a24cae5d/s/src/tools/build/user-config.jam
notice: Searching '/home/Buildit/.conan2/p/boostaa9b6a24cae5d/s/src/tools/build' for user-config configuration file 'user-config.jam'.
notice: Loading user-config configuration file 'user-config.jam' from '/home/Buildit/.conan2/p/boostaa9b6a24cae5d/s/src/tools/build'.
notice: [zlib] Using pre-installed library
notice: [zlib] Condition
notice: [bzip2] Using pre-installed library
notice: [bzip2] Condition
notice: will use '/opt/rh/gcc-toolset-10/root/usr/bin/g++' for gcc, condition <toolset>gcc-10
notice: using gcc libraries :: <toolset>gcc-10 :: /opt/rh/gcc-toolset-10/root/usr/bin /opt/rh/gcc-toolset-10/root/usr/lib /opt/rh/gcc-toolset-10/root/usr/lib32 /opt/rh/gcc-toolset-10/root/usr/lib64
notice: using gcc archiver :: <toolset>gcc-10 :: /opt/rh/gcc-toolset-10/root/usr/bin/ar
warning: toolset gcc initialization: can not find tool windres
warning: initialized from /home/Buildit/.conan2/p/boostaa9b6a24cae5d/s/src/tools/build/user-config.jam:5
notice: using rc compiler :: <toolset>gcc-10 :: /opt/rh/gcc-toolset-10/root/usr/bin/as
notice: [zlib] zlib is already configured
notice: [bzip2] bzip is already configured
notice: iostreams: not using lzma compression
notice: iostreams: not using zstd compression
notice: [python-cfg] Configuring python...
notice: [python-cfg] Checking interpreter command "python"...
notice: [python-cfg] running command 'python -c "from sys import *; print('version=%d.%d\nplatform=%s\nprefix=%s\nexec_prefix=%s\nexecutable=%s' % (version_info[0],version_info[1],platform,prefix,exec_prefix,executable))" 2>&1'
notice: [python-cfg] ...does not invoke a working interpreter
notice: [python-cfg] Python headers and libraries not found.
Performing configuration checks

    - default address-model    : 64-bit [1]
    - default architecture     : x86 [1]
    - compiler supports SSE2   : yes [2]
    - compiler supports SSE4.1 : yes [2]
    - cxx11_static_assert      : yes [2]
    - cxx20_hdr_concepts       : yes [2]
    - cpp_lib_memory_resource  : yes [2]
warning: non-free usage requirements <boost.cobalt.pmr>std ignored
warning: in main-target boost_cobalt at libs/cobalt/build/Jamfile:73
    - has std::atomic_ref      : yes [2]
    - has statx                : yes [2]
    - has init_priority attribute : yes [2]
    - has stat::st_blksize     : yes [2]
    - has stat::st_mtim        : yes [2]
    - has stat::st_mtimensec   : no [2]
    - has stat::st_mtimespec   : no [2]
    - has stat::st_birthtim    : no [2]
    - has stat::st_birthtimensec : no [2]
    - has stat::st_birthtimespec : no [2]
    - has fdopendir(O_NOFOLLOW) : yes [2]
    - has dirent::d_type       : yes [2]
    - has POSIX *at APIs       : yes [2]
    - cxx11_auto_declarations  : yes [2]
    - cxx11_constexpr          : yes [2]
    - cxx11_defaulted_functions : yes [2]
    - cxx11_final              : yes [2]
    - cxx11_hdr_mutex          : yes [2]
    - cxx11_hdr_tuple          : yes [2]
    - cxx11_lambdas            : yes [2]
    - cxx11_noexcept           : yes [2]
    - cxx11_nullptr            : yes [2]
    - cxx11_rvalue_references  : yes [2]
    - cxx11_template_aliases   : yes [2]
    - cxx11_thread_local       : yes [2]
    - cxx11_variadic_templates : yes [2]
    - has_icu builds           : no [2]
    - zlib                     : yes [3]
    - bzip2                    : yes [3]
    - cxx11_decltype           : yes [2]
    - cxx11_basic_alignas      : yes [2]
    - iconv (libc)             : yes [2]
    - cxx11_defaulted_moves    : yes [2]
    - cxx11_hdr_functional     : yes [2]
    - cxx11_hdr_type_traits    : yes [2]
    - cxx11_override           : yes [2]
    - cxx11_range_based_for    : yes [2]
    - cxx11_scoped_enums       : yes [2]
    - cxx11_smart_ptr          : yes [2]
    - native atomic int32 supported : yes [2]
    - native syslog supported  : yes [2]
    - pthread supports robust mutexes : yes [2]
    - Boost.Regex is header-only : yes [2]
    - lockfree boost::atomic_flag : yes [2]
    - compiler supports SSSE3  : yes [2]
    - compiler supports AVX2   : yes [2]
    - gcc visibility           : yes [2]
    - sfinae_expr              : yes [2]
    - cxx11_unified_initialization_syntax : yes [2]
    - cxx11_hdr_initializer_list : yes [2]
    - cxx11_hdr_chrono         : yes [2]
    - cxx11_numeric_limits     : yes [2]
    - cxx11_hdr_array          : yes [2]
    - cxx11_hdr_atomic         : yes [2]
    - cxx11_allocator          : yes [2]
    - cxx11_explicit_conversion_operators : yes [2]
    - long double support      : yes [2]
    - cxx11_char16_t           : yes [2]
    - cxx11_char32_t           : yes [2]
    - Has Large File Support   : yes [2]
    - Has attribute init_priority : yes [2]
    - std_wstreambuf builds    : yes [2]
    - std_wstreambuf           : yes [2]
    - libbacktrace builds      : yes [2]
    - addr2line builds         : yes [2]
    - WinDbg builds            : no [2]
    - cxx11_rvalue_references  : yes [4]
    - WinDbg builds            : no [4]
    - WinDbgCached builds      : no [2]
    - WinDbgCached builds      : no [4]
    - BOOST_COMP_GNUC >= 4.3.0 : yes [2]
    - cxx11_hdr_thread         : yes [2]
    - cxx11_hdr_regex          : yes [2]

[1] gcc-10
[2] gcc-10/rls/bst.l-lbc/bst.l-on/bst.l-off/cxstd-20-iso/lnk-sttc/nm-on/thrd-mlt/vsblt-hdn
[3] lnk-sttc
[4] gcc-10/rls/bst.l-lbc/bst.l-on/bst.l-off/bld-no/cxstd-20-iso/lnk-sttc/nm-on/thrd-mlt/vsblt-hdn

Component configuration:

    - atomic                   : building
    - chrono                   : building
    - cobalt                   : building
    - container                : building
    - context                  : building
    - contract                 : building
    - coroutine                : building
    - date_time                : building
    - exception                : building
    - fiber                    : building
    - filesystem               : building
    - graph                    : building
    - graph_parallel           : not building
    - headers                  : not building
    - iostreams                : building
    - json                     : building
    - locale                   : building
    - log                      : building
    - math                     : building
    - mpi                      : not building
    - nowide                   : building
    - program_options          : building
    - python                   : not building
    - random                   : building
    - regex                    : building
    - serialization            : building
    - stacktrace               : building
    - system                   : building
    - test                     : building
    - thread                   : building
    - timer                    : building
    - type_erasure             : building
    - url                      : building
    - wave                     : building

In file included from ./boost/cobalt/concepts.hpp:8,
                 from ./boost/cobalt/main.hpp:8,
                 from libs/cobalt/src/main.cpp:8:
/opt/rh/gcc-toolset-10/root/usr/include/c++/10/coroutine:295:2: error: #error "the coroutine header requires -fcoroutines"
  295 | #error "the coroutine header requires -fcoroutines"
      |  ^~~~~
In file included from ./boost/cobalt/main.hpp:8,
                 from libs/cobalt/src/main.cpp:8:
./boost/cobalt/concepts.hpp:23:50: error: ‘std::coroutine_handle’ has not been declared
   23 | concept awaitable_type = requires (Awaitable aw, std::coroutine_handle<Promise> h)
...

boost/1.84.0: ERROR:
Package '2056b48c913c97ff66e4064b9458755238518e0f' build failed
boost/1.84.0: WARN: Build folder /home/Buildit/.conan2/p/b/boost0e147afede3cc/b/build-release
ERROR: boost/1.84.0: Error in build() method, line 942
        self.run(full_command)
        ConanException: Error 1 while executing

[CJCombrink]

@uilianries PS: I see you have a PR open on boost, any insights?

[CJCombrink]

I upgraded conan to 2.1.0 and removed my os.distro from my profile (since the upgrade nuked my setting.yaml hack) and still see the same build issue

[uilianries]

@CJCombrink Hello! Unfortunately your issue is not related to my PR. That PR is only related to cxxstd, but your bug requires an extra flag to use coroutines.

It's a total valid bug report, as cobalt is C++20 and uses coroutines. I'll check if we have a PR to this case, otherwise, I'll take a look later.

[uilianries]

Fixed by #24237

Build logs using GCC 10 + Linux + Conan 2.x + Cobalt looking good:

boost-1.84.0-linux-static.log