gcc -c  -iquote"C:/_32/C" -s -O2 -DWIN32 -DWIN64 -DCONSERVATIVE  -DPERL_TEXTMODE_SCRIPTS -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DUSE_PERLIO -D__USE_MINGW_ANSI_STDIO -fwrapv -fno-strict-aliasing -mms-bitfields "-DMY_FORMAT=\"%.16e\"" -s -O2   -DVERSION=\"0.00\" -DXS_VERSION=\"0.00\"  "-IC:\_64\perl530_810\lib\CORE"   try_pl_d937.c
<command-line>: warning: missing terminating " character
try_pl_d937.xs:1:10: fatal error: EXTERN.h: No such file or directory
 #include "EXTERN.h"
          ^~~~~~~~~~
compilation terminated.