In file included from Libdeflate.xs:3:
C:\STRAWB~1\perl\lib\CORE/XSUB.h:615:21: error: 'PerlMem_malloc' undeclared here (not in a function); did you mean 'Perl_malloc'?
 #    define malloc  PerlMem_malloc
                     ^~~~~~~~~~~~~~
C:\STRAWB~1\perl\lib\CORE/XSUB.h:615:21: note: in definition of macro 'malloc'
 #    define malloc  PerlMem_malloc
                     ^~~~~~~~~~~~~~
C:\STRAWB~1\perl\lib\CORE/XSUB.h:618:19: error: 'PerlMem_free' undeclared here (not in a function); did you mean 'Perl_sv_free'?
 #    define free  PerlMem_free
                   ^~~~~~~~~~~~
C:\STRAWB~1\perl\lib\CORE/XSUB.h:618:19: note: in definition of macro 'free'
 #    define free  PerlMem_free
                   ^~~~~~~~~~~~
gmake: *** [Makefile:340: Libdeflate.o] Error 1
-> FAIL Installing Gzip-Libdeflate-0.01_01.tar.gz failed. See C:\Users\ben\.cpanm\work\1613793219.7300\build.log for details. Retry with --force to force install it.