[GNU Bison 3.7.3] testsuite: 530 531 532 534 536 537 538 failed

If this can help... I am not able to understand to help more, sorry.

## ------------- ##
## Test results. ##
## ------------- ##

ERROR: 636 tests were run,
7 failed unexpectedly.
26 tests were skipped.
## -------------------------- ##
## testsuite.log was created. ##
## -------------------------- ##

Please send `tests/testsuite.log' and all information you think might help:

    To: <[email protected]>
    Subject: [GNU Bison 3.7.3] testsuite: 530 531 532 534 536 537 538 failed

You may investigate any problem if you feel able to do so, in which
case the test suite provides a good starting point.  Its output may
be found below `tests/testsuite.dir'.

make[3]: *** [Makefile:12291: check-local] Error 1
make[3]: Leaving directory '/home/hv/ssd3/sources/builds/bison'
make[2]: *** [Makefile:9509: check-am] Error 2
make[2]: Leaving directory '/home/hv/ssd3/sources/builds/bison'
make[1]: *** [Makefile:9059: check-recursive] Error 1
make[1]: Leaving directory '/home/hv/ssd3/sources/builds/bison'
make: *** [Makefile:9511 : check] Erreur 2