Can compile Boost1.88 Use cmake
cmake . -B Build -G Ninja -DCMAKE_BUILD_TYPE=Debug -DCMAKE_EXPORT_COMPILE_COMMANDS=ON -DBUILD_TESTING=ON system ubuntu22.04 compiler g++-11
root@adj-Rack-Server:/media/root/00ddc85d-7a69-49c2-b1ae-30a59772eeb6/library/boost-1.88.0# cmake --build ./Build/ -j 128
[0/2] Re-checking globbed directories...
[1/7] Linking CXX executable stage/bin/boost_process_v2_utf8
FAILED: stage/bin/boost_process_v2_utf8
: && /usr/bin/c++ -g libs/process/test/v2/CMakeFiles/boost_process_v2_utf8.dir/utf8.cpp.o -o stage/bin/boost_process_v2_utf8 stage/lib/libboost_process.a stage/lib/libboost_filesystem.a stage/lib/libboost_process_v2_test_impl.a stage/lib/libboost_process.a stage/lib/libboost_filesystem.a stage/lib/libboost_atomic.a stage/lib/libboost_context.a stage/lib/libboost_date_time.a stage/lib/libboost_container.a stage/lib/libboost_unit_test_framework.a && :
/usr/bin/ld: stage/lib/libboost_unit_test_framework.a(unit_test_main.cpp.o): in function main': /media/root/00ddc85d-7a69-49c2-b1ae-30a59772eeb6/library/boost-1.88.0/libs/test/include/boost/test/impl/unit_test_main.ipp:303: undefined reference to init_unit_test_suite(int, char**)'
collect2: error: ld returned 1 exit status
[2/7] Linking CXX executable stage/bin/boost_process_v2_cstring_ref
FAILED: stage/bin/boost_process_v2_cstring_ref
: && /usr/bin/c++ -g libs/process/test/v2/CMakeFiles/boost_process_v2_cstring_ref.dir/cstring_ref.cpp.o -o stage/bin/boost_process_v2_cstring_ref stage/lib/libboost_process.a stage/lib/libboost_filesystem.a stage/lib/libboost_process_v2_test_impl.a stage/lib/libboost_process.a stage/lib/libboost_filesystem.a stage/lib/libboost_atomic.a stage/lib/libboost_context.a stage/lib/libboost_date_time.a stage/lib/libboost_container.a stage/lib/libboost_unit_test_framework.a && :
/usr/bin/ld: stage/lib/libboost_unit_test_framework.a(unit_test_main.cpp.o): in function main': /media/root/00ddc85d-7a69-49c2-b1ae-30a59772eeb6/library/boost-1.88.0/libs/test/include/boost/test/impl/unit_test_main.ipp:303: undefined reference to init_unit_test_suite(int, char**)'
collect2: error: ld returned 1 exit status
[3/7] Linking CXX executable stage/bin/boost_process_v2_environment
FAILED: stage/bin/boost_process_v2_environment
: && /usr/bin/c++ -g libs/process/test/v2/CMakeFiles/boost_process_v2_environment.dir/environment.cpp.o -o stage/bin/boost_process_v2_environment stage/lib/libboost_process.a stage/lib/libboost_filesystem.a stage/lib/libboost_process_v2_test_impl.a stage/lib/libboost_process.a stage/lib/libboost_filesystem.a stage/lib/libboost_atomic.a stage/lib/libboost_context.a stage/lib/libboost_date_time.a stage/lib/libboost_container.a stage/lib/libboost_unit_test_framework.a && :
/usr/bin/ld: stage/lib/libboost_unit_test_framework.a(unit_test_main.cpp.o): in function main': /media/root/00ddc85d-7a69-49c2-b1ae-30a59772eeb6/library/boost-1.88.0/libs/test/include/boost/test/impl/unit_test_main.ipp:303: undefined reference to init_unit_test_suite(int, char**)'
collect2: error: ld returned 1 exit status
[4/7] Linking CXX executable stage/bin/boost_process_v2_shell
FAILED: stage/bin/boost_process_v2_shell
: && /usr/bin/c++ -g libs/process/test/v2/CMakeFiles/boost_process_v2_shell.dir/shell.cpp.o -o stage/bin/boost_process_v2_shell stage/lib/libboost_process.a stage/lib/libboost_filesystem.a stage/lib/libboost_process_v2_test_impl.a stage/lib/libboost_process.a stage/lib/libboost_filesystem.a stage/lib/libboost_atomic.a stage/lib/libboost_context.a stage/lib/libboost_date_time.a stage/lib/libboost_container.a stage/lib/libboost_unit_test_framework.a && :
/usr/bin/ld: stage/lib/libboost_unit_test_framework.a(unit_test_main.cpp.o): in function main': /media/root/00ddc85d-7a69-49c2-b1ae-30a59772eeb6/library/boost-1.88.0/libs/test/include/boost/test/impl/unit_test_main.ipp:303: undefined reference to init_unit_test_suite(int, char**)'
collect2: error: ld returned 1 exit status
[5/7] Linking CXX executable stage/bin/boost_process_v2_pid
FAILED: stage/bin/boost_process_v2_pid
: && /usr/bin/c++ -g libs/process/test/v2/CMakeFiles/boost_process_v2_pid.dir/pid.cpp.o -o stage/bin/boost_process_v2_pid stage/lib/libboost_process.a stage/lib/libboost_filesystem.a stage/lib/libboost_process_v2_test_impl.a stage/lib/libboost_process.a stage/lib/libboost_filesystem.a stage/lib/libboost_atomic.a stage/lib/libboost_context.a stage/lib/libboost_date_time.a stage/lib/libboost_container.a stage/lib/libboost_unit_test_framework.a && :
/usr/bin/ld: stage/lib/libboost_unit_test_framework.a(unit_test_main.cpp.o): in function main': /media/root/00ddc85d-7a69-49c2-b1ae-30a59772eeb6/library/boost-1.88.0/libs/test/include/boost/test/impl/unit_test_main.ipp:303: undefined reference to init_unit_test_suite(int, char**)'
collect2: error: ld returned 1 exit status
[6/7] Linking CXX executable stage/bin/boost_process_v2_ext
FAILED: stage/bin/boost_process_v2_ext
: && /usr/bin/c++ -g libs/process/test/v2/CMakeFiles/boost_process_v2_ext.dir/ext.cpp.o -o stage/bin/boost_process_v2_ext stage/lib/libboost_process.a stage/lib/libboost_filesystem.a stage/lib/libboost_process_v2_test_impl.a stage/lib/libboost_process.a stage/lib/libboost_filesystem.a stage/lib/libboost_atomic.a stage/lib/libboost_context.a stage/lib/libboost_date_time.a stage/lib/libboost_container.a stage/lib/libboost_unit_test_framework.a && :
/usr/bin/ld: stage/lib/libboost_unit_test_framework.a(unit_test_main.cpp.o): in function main': /media/root/00ddc85d-7a69-49c2-b1ae-30a59772eeb6/library/boost-1.88.0/libs/test/include/boost/test/impl/unit_test_main.ipp:303: undefined reference to init_unit_test_suite(int, char**)'
collect2: error: ld returned 1 exit status
[7/7] Linking CXX executable stage/bin/boost_process_v2_process
FAILED: stage/bin/boost_process_v2_process
: && /usr/bin/c++ -g libs/process/test/v2/CMakeFiles/boost_process_v2_process.dir/process.cpp.o -o stage/bin/boost_process_v2_process stage/lib/libboost_process.a stage/lib/libboost_filesystem.a stage/lib/libboost_process_v2_test_impl.a stage/lib/libboost_process.a stage/lib/libboost_filesystem.a stage/lib/libboost_atomic.a stage/lib/libboost_context.a stage/lib/libboost_date_time.a stage/lib/libboost_container.a stage/lib/libboost_unit_test_framework.a && :
/usr/bin/ld: stage/lib/libboost_unit_test_framework.a(unit_test_main.cpp.o): in function main': /media/root/00ddc85d-7a69-49c2-b1ae-30a59772eeb6/library/boost-1.88.0/libs/test/include/boost/test/impl/unit_test_main.ipp:303: undefined reference to init_unit_test_suite(int, char**)'
collect2: error: ld returned 1 exit status
Confirming this for boost 1.89.0
FAILED: stage/bin/boost_process_v2_environment
: && /usr/bin/c++ -g libs/process/test/v2/CMakeFiles/boost_process_v2_environment.dir/environment.cpp.o -o stage/bin/boost_process_v2_environment stage/lib/libboost_process.a stage/lib/libboost_filesystem.a stage/lib/libboost_process_v2_test_impl.a stage/lib/libboost_process.a stage/lib/libboost_filesystem.a stage/lib/libboost_atomic.a stage/lib/libboost_date_time.a stage/lib/libboost_container.a stage/lib/libboost_context.a stage/lib/libboost_unit_test_framework.a && :
/usr/bin/ld: stage/lib/libboost_unit_test_framework.a(unit_test_main.cpp.o): in function `main':
/home/nigels/dev/boost/libs/test/include/boost/test/impl/unit_test_main.ipp:303:(.text+0x676): undefined reference to `init_unit_test_suite(int, char**)'
collect2: error: ld returned 1 exit status
Succeeds here with: -DBUILD_TESTING=N
I've filed a PR that fixes this on my setup.