C:\strawberry\Win32-GuiTest-1.60>perl -V Set up gcc environment - 4.4.7 20111023 (prerelease) [svn/rev.180339 - mingw-w64/oz] Summary of my perl5 (revision 5 version 14 subversion 2) configuration: Platform: osname=MSWin32, osvers=5.2, archname=MSWin32-x64-multi-thread uname='' config_args='undef' hint=recommended, useposix=true, d_sigaction=undef useithreads=define, usemultiplicity=define useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef use64bitint=define, use64bitall=undef, uselongdouble=undef usemymalloc=n, bincompat5005=undef Compiler: cc='C:/STRAWB~1/c/bin/gcc.exe', ccflags ='-DNDEBUG -DWIN32 -D_CONSOLE -DNO_STRICT -DWIN64 -DCONSERVATIVE -DPERL_TEXTMODE_SCRIPTS -DUSE_SITECUSTOMI ZE -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DUSE_PERLIO -DHASATTRIBUTE -fno-strict-aliasing -mms-bitfields', optimize='-O2', cppflags='-DWIN32' ccversion='', gccversion='4.4.7 20111023 (prerelease) [svn/rev.180339 - mingw-w64/oz]', gccosandvers='' intsize=4, longsize=4, ptrsize=8, doublesize=8, byteorder=12345678 d_longlong=undef, longlongsize=8, d_longdbl=define, longdblsize=8 ivtype='__int64', ivsize=8, nvtype='double', nvsize=8, Off_t='__int64', lseeksize=8 alignbytes=8, prototype=define Linker and Libraries: ld='C:\STRAWB~1\c\bin\g++.exe', ldflags ='-L"C:\Perl64\lib\CORE"' libpth=\lib libs=-lkernel32 -luser32 -lgdi32 -lwinspool -lcomdlg32 -ladvapi32 -lshell32 -lole32 -loleaut32 -lnetapi32 -luuid -lws2_32 -lmpr -lwinmm -lversion -lodbc32 -lodbccp32 -lcomctl32 -lbufferoverflowU -lmsvcrt perllibs=-lkernel32 -luser32 -lgdi32 -lwinspool -lcomdlg32 -ladvapi32 -lshell32 -lole32 -loleaut32 -lnetapi32 -luuid -lws2_32 -lmpr -lwinmm -lvers ion -lodbc32 -lodbccp32 -lcomctl32 -lbufferoverflowU -lmsvcrt libc=msvcrt.lib, so=dll, useshrplib=true, libperl=perl514.lib gnulibc_version='' Dynamic Linking: dlsrc=dl_win32.xs, dlext=dll, d_dlsymun=undef, ccdlflags=' ' cccdlflags=' ', lddlflags='-mdll -L"C:\Perl64\lib\CORE"' Characteristics of this binary (from libperl): Compile-time options: MULTIPLICITY PERL_DONT_CREATE_GVSV PERL_IMPLICIT_CONTEXT PERL_IMPLICIT_SYS PERL_MALLOC_WRAP PERL_PRESERVE_IVUV PL_OP_SLAB_ALLOC USE_64_BIT_INT USE_ITHREADS USE_LARGE_FILES USE_PERLIO USE_PERL_ATOF USE_SITECUSTOMIZE Locally applied patches: ActivePerl Build 1402 [295342] Built under MSWin32 Compiled at Oct 7 2011 15:19:36 %ENV: PERL5LIB="C:\Users\SPULLA~1\perl5\lib\perl5\MSWin32-x64-multi-thread;C:\Users\SPULLA~1\perl5\lib\perl5" PERL_JSON_BACKEND="JSON::XS" PERL_MM_OPT="INSTALL_BASE=C:\Users\SPULLA~1\perl5" PERL_YAML_BACKEND="YAML" @INC: C:\Users\SPULLA~1\perl5\lib\perl5\MSWin32-x64-multi-thread C:\Users\SPULLA~1\perl5\lib\perl5/MSWin32-x64-multi-thread C:\Users\SPULLA~1\perl5\lib\perl5 C:/Perl64/site/lib C:/Perl64/lib .