perl -v

 This is perl 5, version 26, subversion 0 (v5.26.0) built for MSWin32-x64-multi-thread

gmake -v

 GNU Make 4.2.1

cpan> test App::pl

...

t/unit.t ....... 1/8
#   Failed test '"C:\EX_D\ulisseDUE\perl5.26.64bit\perl\bin\perl.exe" "-W" "../pl" "for( @A, [$A[0], 123456] ) { E Isodate( $_, 0 ), I( 0.0, $_ ), I( $_, \"+0\" ), I( $_, 1 ), D( $_, -80, \"+90\", \"-9.5\" ), \"\"; Date \"08:45\", $_ }" "123456789" "123456789.0" "123456789.1" "123456789.000001" "123456789.123456789"'
# got: 'Subroutine Config::STORE redefined at C:/EX_D/ulisseDUE/perl5.26.64bit/perl/vendor/lib/Portable/Config.pm line 68.
# 1973-11-29T21:33:09.000000 +00:00 1973-11-29T21:33:09.000000 +00:00 1973-11-29T21:33:09.000000 +00:00 1973-11-29T22:33:09.000000 +01:00 Thu Nov 29 12:03:19.000000 -09:30 1973 Fri Nov 30 06:18:09.000000 +08:45 1973
# 1973-11-29T21:33:09.000000 +00:00 1973-11-29T21:33:09.000000 +00:00 1973-11-29T21:33:09.000000 +00:00 1973-11-29T22:33:09.000000 +01:00 Thu Nov 29 12:03:19.000000 -09:30 1973 Fri Nov 30 06:18:09.000000 +08:45 1973
# 1973-11-29T21:33:09.100000 +00:00 1973-11-29T21:33:09.100000 +00:00 1973-11-29T21:33:09.100000 +00:00 1973-11-29T22:33:09.100000 +01:00 Thu Nov 29 12:03:19.100000 -09:30 1973 Fri Nov 30 06:18:09.100000 +08:45 1973
# 1973-11-29T21:33:09.000001 +00:00 1973-11-29T21:33:09.000001 +00:00 1973-11-29T21:33:09.000001 +00:00 1973-11-29T22:33:09.000001 +01:00 Thu Nov 29 12:03:19.000001 -09:30 1973 Fri Nov 30 06:18:09.000001 +08:45 1973
# 1973-11-29T21:33:09.123456 +00:00 1973-11-29T21:33:09.123456 +00:00 1973-11-29T21:33:09.123456 +00:00 1973-11-29T22:33:09.123456 +01:00 Thu Nov 29 12:03:19.123456 -09:30 1973 Fri Nov 30 06:18:09.123456 +08:45 1973
# 1973-11-29T21:33:09.123456 +00:00 1973-11-29T21:33:09.123456 +00:00 1973-11-29T21:33:09.123456 +00:00 1973-11-29T22:33:09.123456 +01:00 Thu Nov 29 12:03:19.123456 -09:30 1973 Fri Nov 30 06:18:09.123456 +08:45 1973
# '
# expected: '1973-11-29T21:33:09.000000 +00:00 1973-11-29T21:33:09.000000 +00:00 1973-11-29T21:33:09.000000 +00:00 1973-11-29T22:33:09.000000 +01:00 Thu Nov 29 12:03:19.000000 -09:30 1973 Fri Nov 30 06:18:09.000000 +08:45 1973
# 1973-11-29T21:33:09.000000 +00:00 1973-11-29T21:33:09.000000 +00:00 1973-11-29T21:33:09.000000 +00:00 1973-11-29T22:33:09.000000 +01:00 Thu Nov 29 12:03:19.000000 -09:30 1973 Fri Nov 30 06:18:09.000000 +08:45 1973
# 1973-11-29T21:33:09.100000 +00:00 1973-11-29T21:33:09.100000 +00:00 1973-11-29T21:33:09.100000 +00:00 1973-11-29T22:33:09.100000 +01:00 Thu Nov 29 12:03:19.100000 -09:30 1973 Fri Nov 30 06:18:09.100000 +08:45 1973
# 1973-11-29T21:33:09.000001 +00:00 1973-11-29T21:33:09.000001 +00:00 1973-11-29T21:33:09.000001 +00:00 1973-11-29T22:33:09.000001 +01:00 Thu Nov 29 12:03:19.000001 -09:30 1973 Fri Nov 30 06:18:09.000001 +08:45 1973
# 1973-11-29T21:33:09.123456 +00:00 1973-11-29T21:33:09.123456 +00:00 1973-11-29T21:33:09.123456 +00:00 1973-11-29T22:33:09.123456 +01:00 Thu Nov 29 12:03:19.123456 -09:30 1973 Fri Nov 30 06:18:09.123456 +08:45 1973
# 1973-11-29T21:33:09.123456 +00:00 1973-11-29T21:33:09.123456 +00:00 1973-11-29T21:33:09.123456 +00:00 1973-11-29T22:33:09.123456 +01:00 Thu Nov 29 12:03:19.123456 -09:30 1973 Fri Nov 30 06:18:09.123456 +08:45 1973
# '
#   at ./test.pm line 50.
t/unit.t ....... 2/8 # Looks like you failed 1 test of 8.
t/unit.t ....... Dubious, test returned 1 (wstat 256, 0x100)
Failed 1/8 subtests

Test Summary Report
-------------------
t/unit.t     (Wstat: 256 Tests: 8 Failed: 1)
  Failed test:  1
  Non-zero exit status: 1
Files=6, Tests=80,  8 wallclock secs ( 0.03 usr +  0.01 sys =  0.05 CPU)
Result: FAIL
Failed 1/6 test programs. 1/80 subtests failed.
gmake: *** [Makefile:875: test_dynamic] Error 1
  PFEIFFER/App-pl-0.90.2.tgz
  C:\EX_D\ulisseDUE\perl5.26.64bit\c\bin\gmake.exe test -- NOT OK
//hint// to see the cpan-testers results for installing this module, try:
  reports PFEIFFER/App-pl-0.90.2.tgz
Stopping: 'test' failed for 'App::pl'.
Failed during this command:
 PFEIFFER/App-pl-0.90.2.tgz                   : make_test NO



# as mentioned in the error (cpan> upgrade Portable::Config fails btw):
cpan> r Portable::Config

Package namespace         installed    latest  in CPAN file
Portable::Config               1.22      1.23  KMX/Portable-1.23.tar.gz