You can compile the package for more than one kind of computer at the
same time, by placing the object files for each architecture in their
own directory. To do this, you can use GNU
cd to the directory where you want the object files and
executables to go and run the
configure automatically checks for the source code in the
configure is in and in ... This is
known as a VPATH build.
With a non-GNU
it is safer to compile the package for one
architecture at a time in the source code directory. After you have
installed the package for one architecture, use ‘make distclean’
before reconfiguring for another architecture.
On MacOS X 10.5 and later systems, you can create libraries and executables that work on multiple system types—known as fat or universal binaries—by specifying multiple -arch options to the compiler but only a single -arch option to the preprocessor. Like this:
./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64" \ CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \ CPP="gcc -E" CXXCPP="g++ -E"
This is not guaranteed to produce working output in all cases, you may
have to build one architecture at a time and combine the results
lipo tool if you have problems.