#2482: lib: update bundled libs cmake version requirements to avoid failure with CMake 4.0

[lifflander]

Fixes #2482

This fixes the Mac build which has been consistently failing due to a much later cmake version:

  Compatibility with CMake < 3.5 has been removed from CMake.

[github-actions]

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[github-actions]

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vt-build-amd64-ubuntu-20-04-clang-9-cpp

Build for 9330467 (2025-11-13 19:40:13 UTC)

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vt-build-amd64-ubuntu-22-04-clang-13-cpp

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vt-build-amd64-ubuntu-20-04-gcc-10-cpp

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vt-build-amd64-ubuntu-24-04-clang-17-cpp

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vt-build-amd64-ubuntu-20-04-gcc-9-ldms-cpp

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vt-build-amd64-ubuntu-20-04-gcc-9-cpp

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vt-build-amd64-ubuntu-22-04-gcc-12-cpp

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vt-build-amd64-ubuntu-22-04-clang-15-cpp

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vt-build-amd64-alpine-3-16-clang-cpp

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vt-build-amd64-ubuntu-22-04-clang-14-cpp

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vt-build-amd64-ubuntu-24-04-clang-16-vtk-cpp

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vt-build-amd64-ubuntu-24-04-clang-16-zoltan-cpp

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vt-build-amd64-ubuntu-24-04-gcc-14-cpp

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vt-build-amd64-ubuntu-22-04-clang-11-cpp

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vt-build-amd64-ubuntu-20-04-gcc-10-openmpi-cpp

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vt-build-amd64-ubuntu-22-04-clang-12-cpp

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vt-build-amd64-ubuntu-24-04-clang-18-cpp

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vt-build-amd64-ubuntu-22-04-gcc-12-vtk-cpp

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vt-build-amd64-ubuntu-24-04-gcc-13-cpp

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vt-build-amd64-ubuntu-20-04-icpx-cpp

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vt-build-amd64-ubuntu-20-04-gcc-9-cuda-12-2-0-cpp

Build for 9330467 (2025-11-13 19:40:13 UTC)

/vt/lib/fmt/include/fmt-vt/base.h(472): warning #128-D: loop is not reachable
    for (; n != 0; ++s1, ++s2, --n) {
    ^
          detected during:
            instantiation of "auto fmt::v11::detail::compare(const Char *, const Char *, std::size_t)->int [with Char=char]" at line 591
            instantiation of "auto fmt::v11::basic_string_view<Char>::compare(fmt::v11::basic_string_view<Char>) const->int [with Char=char]" at line 598
            instantiation of class "fmt::v11::basic_string_view<Char> [with Char=char]" at line 2621
            instantiation of "auto fmt::v11::basic_format_args<Context>::get_id(fmt::v11::basic_string_view<Char>) const->int [with Context=fmt::v11::context, Char=char]" at line 2664

Remark: The warnings can be suppressed with "-diag-suppress <warning-number>"

/vt/lib/fmt/include/fmt-vt/format.h(2596): warning #2417-D: constexpr constructor calls non-constexpr function "fmt::v11::basic_memory_buffer<T, SIZE, Allocator>::basic_memory_buffer(const Allocator &) [with T=fmt::v11::detail::bigint::bigit, SIZE=32UL, Allocator=fmt::v11::detail::allocator<fmt::v11::detail::bigint::bigit>]"
    constexpr bigint() : exp_(0) {}
                                 ^

/vt/lib/fmt/include/fmt-vt/base.h(472): warning #128-D: loop is not reachable
    for (; n != 0; ++s1, ++s2, --n) {
    ^
          detected during:
            instantiation of "auto fmt::v11::detail::compare(const Char *, const Char *, std::size_t)->int [with Char=char]" at line 591
            instantiation of "auto fmt::v11::basic_string_view<Char>::compare(fmt::v11::basic_string_view<Char>) const->int [with Char=char]" at line 598
            instantiation of class "fmt::v11::basic_string_view<Char> [with Char=char]" at line 2621
            instantiation of "auto fmt::v11::basic_format_args<Context>::get_id(fmt::v11::basic_string_view<Char>) const->int [with Context=fmt::v11::context, Char=char]" at line 2664

Remark: The warnings can be suppressed with "-diag-suppress <warning-n

 ==> And there is more. Read log. <==

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vt-build-amd64-ubuntu-20-04-gcc-9-cuda-11-4-3-cpp

Build for 9330467 (2025-11-13 19:40:13 UTC)

/vt/src/vt/pipe/pipe_manager.impl.h(135): warning: missing return statement at end of non-void function "vt::pipe::PipeManager::makeSend<f,Target>(Target) [with f=&vt::vrt::collection::lb::GreedyLB::collectHandler, Target=vt::objgroup::proxy::ProxyElm<vt::vrt::collection::lb::GreedyLB>]"
          detected during:
            instantiation of "auto vt::pipe::PipeManager::makeSend<f,Target>(Target) [with f=&vt::vrt::collection::lb::GreedyLB::collectHandler, Target=vt::objgroup::proxy::ProxyElm<vt::vrt::collection::lb::GreedyLB>]" 
/vt/src/vt/objgroup/proxy/proxy_objgroup.impl.h(221): here
            instantiation of "vt::objgroup::proxy::Proxy<ObjT>::PendingSendType vt::objgroup::proxy::Proxy<ObjT>::reduce<f,Op,Target,Args...>(Target, Args &&...) const [with ObjT=vt::vrt::collection::lb::GreedyLB, f=&vt::vrt::collection::lb::GreedyLB::collectHandler, Op=vt::collective::PlusOp, Target=vt::objgroup::proxy::ProxyElm<vt::vrt::collection::lb::GreedyLB>, Args=<vt::vrt::collection::lb::GreedyPayload>]" 
/vt/src/vt/vrt/collection/balance/greedylb/greedylb.cc(222): here

/vt/src/vt/pipe/pipe_manager.impl.h(135): warning: missing return statement at end of non-void function "vt::pipe::PipeManager::makeSend<f,Target>(Target) [with f=&vt::vrt::collection::lb::TemperedLB::remoteBlockCountHandler, Target=vt::objgroup::proxy::ProxyElm<vt::vrt::collection::lb::TemperedLB>]"
          detected during:
            instantiation of "auto vt::pipe::PipeManager::makeSend<f,Target>(Target) [with f=&vt::vrt::collection::lb::TemperedLB::remoteBlockCountHandler, Target=vt::objgroup::proxy::ProxyElm<vt::vrt::collection::lb::TemperedLB>]" 
/vt/src/vt/objgroup/proxy/proxy_objgroup.impl.h(221): here
            instantiation of "vt::objgroup::proxy::Proxy<ObjT>::PendingSendType vt::objgroup::proxy::Proxy<ObjT>::reduce<f,Op,Target,Args...>(Target, Args &&...) const [with ObjT=vt::vrt::collection::lb::TemperedLB, f=&vt::vrt::collection::lb::TemperedLB::remoteBlockCountHandler, Op=vt::collective::

 ==> And there is more. Read log. <==

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vt-build-amd64-ubuntu-22-04-gcc-11-cpp

Build for 9330467 (2025-11-13 19:40:13 UTC)

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vt-build-amd64-ubuntu-20-04-clang-10-cpp

Build for 9330467 (2025-11-13 19:40:13 UTC)

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vt-build-amd64-ubuntu-20-04-gcc-10-openmpi-cpp-spack

Build for 9330467 (2025-11-13 19:40:13 UTC)

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vt-build-amd64-ubuntu-22-04-clang-15-cpp-cxx20

Build for 9330467 (2025-11-13 19:40:13 UTC)

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.48%. Comparing base (aca0c9f) to head (61f212c).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2483      +/-   ##
===========================================
- Coverage    88.52%   88.48%   -0.04%     
===========================================
  Files          728      728              
  Lines        30909    30910       +1     
===========================================
- Hits         27363    27352      -11     
- Misses        3546     3558      +12     

see 7 files with indirect coverage changes

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[cz4rs]

This seems alright as a temporary measure, but might cause issues for users with CMake > 4.0. As long as the CI passes, we can have reasonable confidence that no bugs were introduced by touching cmake_minimum_required.

I think we should upgrade the libs in follow-up issues, this should help with everything except for libfort:

• mimalloc 3.18
• EngFormat-Cpp - to activity upstream, but the lib is so small that we should be able to just raise min required version
• brotli 3.15
• json is the one that is using 3.5...4.0 actually, not sure about this one
• libfort - no activity upstream, stuck with 3.0
• yaml-cpp - 3.5...3.30 here with the explicit comment about avoid CMake warnings 🤷

[nlslatt]

@lifflander This is now critical: Compatibility with CMake < 3.5 has been removed from CMake.