README.AMD64

NOTE!
NOTE! This doc should now be obsolete!
NOTE! pzs-ng will compile the bins with the correct
NOTE! struct sizes necessary for 64bit processors.
NOTE!


Special notes for sitewho and ng-bw on the AMD64 platform
---------------------------------------------------------

Because glftpd is compiled as 32-bit, the variable datatypes in the shared
memory it allocates have different sizes from the corresponding 64-bit
datatypes. This means that when sitewho and ng-bw are compiled as 64-bit and
try to read the "struct ONLINE" that glftpd shares, they try to read it with
the size it would be if it was 64-bit.

To solve this, "-m32" is added to the Makefiles for sitewho and ng-bw. With
this option, the binaries are compiled 32-bit instead of 64-bit. However, to
be able to compile a 32-bit binary, you need 32-bit libraries to link against.
Some distributions only include 64-bit libraries, so you will therefore need
to install the 32-bit ones respectively.

Below is a small list of distributions, and the necessary steps needed to make
pzs-ng compile 32bit - as you can see, there's no "simple" way to find out
what is needed.

ubuntu: apt-get install make gcc ia32-libs lib32gcc1 lib32z1 lib32z1-dev libc6-dev libc6-dev-i386 libc6-i386 zlib1g-dev binutils cpp cpp-4.0 gcc-4.0 lib32stdc++6 linux-kernel-headers

gentoo   : emerge emul-linux-x86-compat emul-linux-x86-baselibs 

debian   : apt-get install lib32gcc1 lib32stdc++6 ia32-libs lsb-release gcc-3.4 cpp-3.4 ia32-libs-dev 
	   rm /usr/bin/gcc && ln -s gcc-3.4 /usr/bin/gcc

suse     : <none>

fedora   : <none>

slackware: should be fine, but may fail to compile if you recompile gcc with support for gcj (java).