I made some progress based on the thread http://www.perlmonks.org/?node_id=786418 but after that I am still getting following error msg. Googling it does not provide any good reason for its cause:

gcc-4 -c  -I/cygdrive/c/ravi/js/src -DPERL_USE_SAFE_PUTENV -U__STRICT_
+ANSI__ -g3
 -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include -DU
+SEIMPORTLI
B -O3   -DVERSION=\"1.16\" -DXS_VERSION=\"1.16\"  "-I/usr/lib/perl5/5.
+10/i686-cy
gwin/CORE"   PJS_Call.c
In file included from /usr/lib/perl5/5.10/i686-cygwin/CORE/perl.h:3427
+,
                 from PJS_Call.c:1:
/usr/lib/perl5/5.10/i686-cygwin/CORE/utf8.h:46: error: expected `=', `
+,', `;', `
asm' or `__attribute__' before `unsigned'
In file included from PJS_Call.c:1:
/usr/lib/perl5/5.10/i686-cygwin/CORE/perl.h:4205: error: expected `=',
+ `,', `;',
 `asm' or `__attribute__' before `char'
/usr/lib/perl5/5.10/i686-cygwin/CORE/perl.h:4207: error: expected `=',
+ `,', `;',
 `asm' or `__attribute__' before `char'
/usr/lib/perl5/5.10/i686-cygwin/CORE/perl.h:4209: error: expected `=',
+ `,', `;',
 `asm' or `__attribute__' before `char'
/usr/lib/perl5/5.10/i686-cygwin/CORE/perl.h:4211: error: expected `=',
+ `,', `;',
 `asm' or `__attribute__' before `char'
/usr/lib/perl5/5.10/i686-cygwin/CORE/perl.h:4213: error: expected `=',
+ `,', `;',
 `asm' or `__attribute__' before `char'
/usr/lib/perl5/5.10/i686-cygwin/CORE/perl.h:4215: error: expected `=',
+ `,', `;',
 `asm' or `__attribute__' before `char'
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