Re: [Hampshire] Building 32-bit apps on 64-bit host
2009/1/5 Adrian Bridgett adr...@smop.co.uk: On Mon, Jan 5, 2009 at 12:23:04 + (+), Richard Danter wrote: Hi all, I have been developing a couple of little apps to make my life easier at work. All has been going well until my host was upgraded to 64-bit. One of the libs I have to use is available only as 32-bit. The apps themselves are using Qt and of course they are 64-bit. Anyone know the correct way to build a 32-bit Qt app on a 64-bit host? I'd use a 32-bit chroot myself to remove any potential problem. Or a VM. I asked the same question on the Qt mailing list and got a similar answer. :) Think I will just use another machine. Not quite as convenient, but since I have one I may as well use it. Thanks Rich -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --
Re: [Hampshire] Building 32-bit apps on 64-bit host
On Mon, 5 Jan 2009 12:23:04 + Richard Danter radan...@googlemail.com wrote: Hi all, I have been developing a couple of little apps to make my life easier at work. All has been going well until my host was upgraded to 64-bit. One of the libs I have to use is available only as 32-bit. The apps themselves are using Qt and of course they are 64-bit. Anyone know the correct way to build a 32-bit Qt app on a 64-bit host? I am using qmake so I hope that makes it easier! The host is Ubuntu 8.04 so ideally I would like to do this the Ubuntu way, if there is such a thing. Thanks Rich Rich, Doesn't really answer the question ... The hard bit is making sure you have all the development libraries in /usr/lib32. I've built a number of console and gtk apps on x86_64 for an ia32 target with 'CC=gcc -m32', but it may be more complex for qt. For gtk (and hence C, not C++), $ CC='gcc -m32' ./configure make Then track down the missing 32 libraries. If you copy them off a 32bit box, you may need to hack the path in the respective .la files to /usr/lib32. -jh -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --
Re: [Hampshire] Building 32-bit apps on 64-bit host
On Mon, 05 Jan 2009 18:24:05 + Jonathan Hudson jh+h...@daria.co.uk wrote: On Mon, 5 Jan 2009 12:23:04 + Richard Danter radan...@googlemail.com wrote: Hi all, Doesn't really answer the question ... The hard bit is making sure you have all the development libraries in /usr/lib32. I've built a number of console and gtk apps on x86_64 for an ia32 target with 'CC=gcc -m32', but it may be more complex for qt. For gtk (and hence C, not C++), $ CC='gcc -m32' ./configure make Then track down the missing 32 libraries. If you copy them off a 32bit box, you may need to hack the path in the respective .la files to /usr/lib32. Easier not to have any *.la files in /usr/lib32, just symlink the highest run time .so to a bare .so, e.g.: # cd /usr/lib32 # ln -sf libfreetype.so.6.3.18 libfreetype.so -jh -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --
Re: [Hampshire] Building 32-bit apps on 64-bit host
On Mon, Jan 5, 2009 at 12:23:04 + (+), Richard Danter wrote: Hi all, I have been developing a couple of little apps to make my life easier at work. All has been going well until my host was upgraded to 64-bit. One of the libs I have to use is available only as 32-bit. The apps themselves are using Qt and of course they are 64-bit. Anyone know the correct way to build a 32-bit Qt app on a 64-bit host? I'd use a 32-bit chroot myself to remove any potential problem. Or a VM. I've once been bitten by a (Java of all things!) program failing to build with obscure output (maven) with 64-bit kernel and 32-bit userspace. Adrian -- Email: adr...@smop.co.uk -*- GPG key available on public key servers Debian GNU/Linux - the maintainable distribution -*- www.debian.org -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --
