[Ohrrpgce] Better Linux Binaries

[Ralph Versteegen]

Yes, I actually put a page on the wiki with my thoughts; didn't get as far
as instructions for actually building portable binaries:
https://rpg.hamsterrepublic.com/ohrrpgce/Portable_GNU-Linux_binaries
Aside from the two options presented on the freegamedev wiki page, there is
a third option: crosscompile. Then you ought to be able to compile just by
passing the right arguments to scons. This is a lot like the chroot option,
except you don't need a full distro, just the core libraries, headers, and
build tools.
I found a post about how to do that:
http://preshing.com/20141119/how-to-build-a-gcc-cross-compiler/
Towards the end of the article he links to a script which does it all
automatically: https://gist.github.com/preshing/41d5c7248dea16238b60 but it
doesn't look foolproof.
But there ought to be a faster way that just downloads existing binary
packages instead of compiling gcc etc.

Also, it's not necessary to do the -Wl,-rpath stuff in that freegamedev
article. Usually instead people just provide a .sh script which sets
LD_LIBRARY_PATH before calling the executable, which is a lot easier to
inspect and modify. Could also use such a script to decide whether to run a
32 or 64 bit binary, to package games universally for linux.

On 1 February 2017 at 08:20, James Paige <Bob at hamsterrepublic.com> wrote:

> I recently discovered that 64 bit binaries of the ohrrpgce build on Ubuntu
> 16.04 will not run on Ubuntu 14.04 because of glibc incompatibilities.
>
> Googling about this issue led me to http://freegamedev.net/wiki/Po
> rtable_binaries where I learned that we should be linking against the
> oldest glibc version that we can make work.
>
> How exactly to link against an old glbc is a mystery to me at the moment,
> but I see that I have some more problems to solve before I will reasonably
> be able to use my home computer to build the nightly linux builds, since it
> is running Ubuntu 16.04 (unless I decide to go the Virtualbox for even
> Linux)
>
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>
>
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