Gianrico Lamura - 2020-08-13

Dear All,
I have installed boost (by following boost instructions) several times during the last five years and I never had any problems . This time, it seems not the case. I tryed to install boot by root previleges and this is what I obtain:

root@Gianrico:/usr/local/boost_1_73_0# ./b2 install
Performing configuration checks

    - default address-model    : 64-bit
    - default architecture     : x86
/usr/local/boost_1_73_0/tools/build/src/build/targets.jam:609: in start-building from module targets
error: Recursion in main target references
error: the following target are being built currently:
error: ./install ./install-proper libs/atomic/build/install libs/atomic/build/install-dependencies ./install
/usr/local/boost_1_73_0/tools/build/src/build/targets.jam:776: in class@main-target.generate from module object(main-target)@5803
/usr/local/boost_1_73_0/tools/boost_install/boost-install.jam:1119: in generate-dependencies from module boost-install
/usr/local/boost_1_73_0/tools/build/src/kernel/modules.jam:107: in modules.call-in from module boost-install
/usr/local/boost_1_73_0/tools/build/src/util/indirect.jam:105: in indirect.call from module indirect
/usr/local/boost_1_73_0/tools/build/src/tools/generate.jam:59: in construct from module object(generated-target-class)@399
/usr/local/boost_1_73_0/tools/build/src/build/targets.jam:1364: in class@basic-target.generate from module object(generated-target-class)@399
/usr/local/boost_1_73_0/tools/build/src/build/targets.jam:812: in generate-really from module object(main-target)@5919
/usr/local/boost_1_73_0/tools/build/src/build/targets.jam:784: in class@main-target.generate from module object(main-target)@5919
/usr/local/boost_1_73_0/tools/build/src/build/targets.jam:934: in targets.generate-from-reference from module targets
/usr/local/boost_1_73_0/tools/build/src/build/targets.jam:1277: in generate-dependencies from module object(alias-target-class)@400
/usr/local/boost_1_73_0/tools/build/src/build/targets.jam:1334: in class@basic-target.generate from module object(alias-target-class)@400
/usr/local/boost_1_73_0/tools/build/src/build/targets.jam:812: in generate-really from module object(main-target)@5920
/usr/local/boost_1_73_0/tools/build/src/build/targets.jam:784: in class@main-target.generate from module object(main-target)@5920
/usr/local/boost_1_73_0/tools/build/src/build/targets.jam:934: in targets.generate-from-reference from module targets
/usr/local/boost_1_73_0/tools/build/src/build/targets.jam:1277: in generate-dependencies from module object(alias-target-class)@251
/usr/local/boost_1_73_0/tools/build/src/build/targets.jam:1334: in class@basic-target.generate from module object(alias-target-class)@251
/usr/local/boost_1_73_0/tools/build/src/build/targets.jam:812: in generate-really from module object(main-target)@5801
/usr/local/boost_1_73_0/tools/build/src/build/targets.jam:784: in class@main-target.generate from module object(main-target)@5801
/usr/local/boost_1_73_0/tools/build/src/build/targets.jam:934: in targets.generate-from-reference from module targets
/usr/local/boost_1_73_0/tools/build/src/build/targets.jam:1277: in generate-dependencies from module object(top-level-target)@253
/usr/local/boost_1_73_0/tools/build/src/build/targets.jam:1334: in alias-target-class.generate from module object(top-level-target)@253
/usr/local/boost_1_73_0/boostcpp.jam:403: in build-multiple from module object(top-level-target)@253
/usr/local/boost_1_73_0/boostcpp.jam:393: in class@top-level-target.generate from module object(top-level-target)@253
/usr/local/boost_1_73_0/tools/build/src/build/targets.jam:812: in generate-really from module object(main-target)@5803
/usr/local/boost_1_73_0/tools/build/src/build/targets.jam:784: in class@main-target.generate from module object(main-target)@5803
/usr/local/boost_1_73_0/tools/build/src/build-system.jam:797: in load from module build-system
/usr/local/boost_1_73_0/tools/build/src/kernel/modules.jam:295: in import from module modules
/usr/local/boost_1_73_0/tools/build/src/kernel/bootstrap.jam:139: in boost-build from module
/usr/local/boost_1_73_0/boost-build.jam:17: in module scope from module

root@Gianrico:/usr/local/boost_1_73_0#

I read what can be fount at the suggested links:
- Getting started guide: http://www.boost.org/more/getting_started/unix-variants.html
- Boost.Build documentation: http://www.boost.org/build/
But I did not found any solution.

Please, could you give me any hints/help?
thank you in advance