In commit d92071d @rurban added new gcc warning flags -Werror=declaration-after-statement and -Wpointer-sign which caused compile errors with perl 5.8.9 on Win32. Problem is reported in CPAN Testers Matrix.

See http://www.cpantesters.org/cpan/report/ebf45fc3-6d42-1014-9ffc-b1671f639c1c

gcc -c -IEncode -s -O2 -DWIN32 -DHAVE_DES_FCRYPT -DUSE_SITECUSTOMIZE -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -fno-strict-aliasing -DPERL_MSVCRT_READFIX -Werror=declaration-after-statement -Wpointer-sign -s -O2 -DVERSION="2.90" -DXS_VERSION="2.90" "-IC:\strawberry\perl\lib\CORE" Encode.c
cc1.exe: error: unrecognized command line option "-Werror=declaration-after-statement"
cc1.exe: error: unrecognized command line option "-Wpointer-sign"
dmake.EXE: Error code 129, while making 'Encode.o'

@rurban Can you look at that your commit?