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Re: 64-bit vs. 32-bit

On 4/25/2014 1:38 PM, Christopher Faylor wrote:
On Fri, Apr 25, 2014 at 01:26:22PM -0400, Tom Szczesny wrote:
I have a 64-bit Windows laptop, and installed Cygwin several years ago.
I wish to verify that I did install the 64-bit installation.
I get the following results:

cygcheck -V
cygcheck (cygwin) 1.7.15


If I did install the 64-bit version, when I rebuild my Linux app on
Cygwin, do I automatically get a 64-bit executable (that will not run
on a 32-bit Windows computer)?
1) No, you didn't install a 64-bit version of Cygwin.  "uname -a" should
make that clear.  You'll need to instal a 64-bit version if that's what
you want.

2) Cygwin doesn't build Linux apps.  If you have a cross-compiler then
it won't automatically decide to build 64-bit Linux apps because you
are on a 64-bit sytem.

There are cygwin 64- and 32-bit native compilers and mingw 32- and 64-bit compilers on the setup.exe menu in case you mean to build for one of those targets.

Tim Prince

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