# SunOS 4.1.3 has two extra fields in struct tm. This works around
# the problem. Other BSD platforms may have similar problems.
# This state of affairs also persists in glibc2, found
# on linux systems running libc6.
# XXX A Configure test is needed.
# Although <unistd.h> is inappropriate in general for SunOS, we need it
# in POSIX.xs to get the correct prototype for ttyname().
$self->{CCFLAGS} = $Config{ccflags} . ' -DSTRUCT_TM_HASZONE -DI_UNISTD' ;
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