How to compile source code as 32bit under 64bit OS.

Brian1 · 12-14-2007, 08:15 PM

Been searching a bit and can't really find what I am looking for. Can one compile source code as 32bit on a 64bit OS? Meaning a source file that is requires ./configure, make , make install routine. At the moment I have a small virtual 32bit OS installed and use this to build if needed. Just would like to know if it can be right in the 64bit OS and end up with a 32bit version. All 32bit libriares for the app is installed but can't figure out how to tell the ./configure to use the 32bit versions to build.

Thanks for your time and help.
Brian

weibullguy · 12-14-2007, 08:38 PM

If your toolchain is built with multilib support, then you can do something like this when you configure the package. You need to have pkg-config installed.

Code:

CC="gcc -m32" CXX="g++ -m32" \
PKG_CONFIG_PATH="/usr/lib/pkgconfig:/usr/local/lib/pkgconfig:/opt/lib/pkgconfig" \
./configure

Take a look at the multilib build instructions at CBLFS to get a better idea.

Brian1 · 12-15-2007, 02:35 PM

Thanks for the help.

Brian