lang/perl5 on cygwin needs chmod

[Makoto Fujiwara <makoto%ki.nu@localhost>]

I happened to package perl-5.20.2 on Win7 (Pro SP1) cygwin.
I needed attached patch.
I have following line for memory disk
WRKOBJDIR=/cygdrive/g/WRKOBJDIR

(uname -a)
CYGWIN_NT-6.1 m08 1.7.35(0.287/5/3) 2015-03-04 12:09 x86_64 Cygwin

Is this specific to my environment ?
Thank you,
---
Makoto Fujiwara, 
Chiba, Japan, Narita Airport and Disneyland prefecture.

Index: lang/perl5/Makefile
===================================================================
RCS file: /cvs/cvsroot/pkgsrc/lang/perl5/Makefile,v
retrieving revision 1.233
diff -u -u -p -r1.233 Makefile
--- lang/perl5/Makefile	22 Nov 2014 03:04:31 -0000	1.233
+++ lang/perl5/Makefile	24 Mar 2015 08:09:55 -0000
@@ -324,6 +324,15 @@ perl5-post-install:
 .if ${OPSYS} == "Haiku"
 	${CHMOD} a+x ${DESTDIR}${PREFIX}/bin/perl
 .endif
+.if ${OPSYS} == "Cygwin"
+	${CHMOD} 0755 ${DESTDIR}${PREFIX}/${PKGMANDIR}
+	${FIND}	      ${DESTDIR}${PREFIX}/${PKGMANDIR} -type f -exec ${CHMOD} 0644 '{}' \;
+	${CHMOD} 0755 ${DESTDIR}${PREFIX}/${PKGMANDIR}/man*
+	${CHMOD} 0755 ${DESTDIR}${PREFIX}
+	${CHMOD} 0755 ${DESTDIR}${PREFIX}/bin
+	${FIND}	      ${DESTDIR}${PERL5_PERLBASE}/man  -type f -exec ${CHMOD} 0644 '{}' \;
+	${CHMOD} a+x  ${DESTDIR}${PERL5_PERLBASE}/bin/perllink
+.endif
 
 .include "packlist.mk"
 .include "../../mk/bsd.pkg.mk"