man3ext='3pm'
test -z "$use64bitint" && use64bitint='define'
test -z "$useithreads" && useithreads='define'
-ccflags="$ccflags -DPERL_USE_SAFE_PUTENV -U__STRICT_ANSI__"
+ccflags="$ccflags -DPERL_USE_SAFE_PUTENV -U__STRICT_ANSI__ -D_GNU_SOURCE"
# - otherwise i686-cygwin
archname='cygwin'