> -----Original Message----- > From: Peter Kennard [mailto:pet...@livingwork.com] > Sent: Friday, June 20, 2014 2:19 AM > To: mingw-w64-public@lists.sourceforge.net > Subject: [Mingw-w64-public] To 32 or 64, that is the question :) > > as the unified installer has options for 64 and 32 bit installs. > > I assume the 64 bit install will not run on a 32 bit machine or a 32 bit OS > install.
Yes (unless you're running it inside in an emulator ;) > Does which install is chosen ONLY effect the actual running of the tools > themselves on the HOST machine or does it have any influence on what the > tools build and link - ie: what compile targets are built and what libraries > are > present and/or linked with? The bitness in the installer first of all says how the _toolchain_ is compiled. By default the toolchain will also generate code for the same bitness ( 32 bit gcc toolchain will generate 32 bit applications, a 64 bit gcc toolchain will generate 64 bit applications), but gcc is also able to work as a cross-compiler (-m64 -m32 gcc arguments). I don't think all toolchains support this though, you'd have to check. Last time I tried the mingw-builds toolchains supported this. > Or is what target is built 100% selected by the build scripts coded to use the > tools? > > Related, Will both versions run underneath 32 bit shells or interpreters like > ant, make, or ruby that may be 32 bit executables themselves yet running on > a 64 bit OS? Yes. > If there is a difference in the output targets, can one install BOTH versions > in > the same install directory (ie: can then unzip on either a > 32 or 64 bit machine and the proper libraries/dlls for runtime are lanuched by > the master .exe or does one have two installs and select which one to use by > setting the path appropriately? The master.exe determines the bitness. You can't AFAIK mix 32 bit libraries with 64 bit executables under Windows, or the other way round. > Hope this isn't too messy a set of questions :) I just didn't see any > explicit > mention of it. Regards Kai ------------------------------------------------------------------------------ HPCC Systems Open Source Big Data Platform from LexisNexis Risk Solutions Find What Matters Most in Your Big Data with HPCC Systems Open Source. Fast. Scalable. Simple. Ideal for Dirty Data. Leverages Graph Analysis for Fast Processing & Easy Data Exploration http://p.sf.net/sfu/hpccsystems _______________________________________________ Mingw-w64-public mailing list Mingw-w64-public@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mingw-w64-public
