gegl-0.4: support legacy systems

[kencu]

gegl uses realpath with NULL buffer ptr
so needs legacysupport to support this

luajit presently does not build on PowerPC
gegl-0.4 builds through successfully without it

Description

Type(s)

• bugfix
• enhancement
• security fix

Tested on

macOS 10.5.8
Xcode 3.2.6

Verification

Have you

• followed our Commit Message Guidelines?
• squashed and minimized your commits?
• checked that there aren't other open pull requests for the same change?
• referenced existing tickets on Trac with full URL?

• checked your Portfile with port lint?
• tried existing tests with sudo port test?
• tried a full install with sudo port -vst install?
• tested basic functionality of all binary files?

[macportsbot]

Notifying maintainers:
@dbevans for port gegl-0.4.

[dbevans]

As of this version, luajit is required in addition to lua itself for lua support.
Thus you can delete the dependency on lua itself as well.
And since deleting the dependencies is not sufficient to ensure luajit/lua are not installed by something else you should also forceably disable lua support using --without-lua to make the point.

This should be done for gegl-devel as well since the two are almost the same at this point.

[kencu]

thanks dave.

[macportsbot]

Travis Build #5453 Errored.

Lint results

--->  Verifying Portfile for gegl-0.4
--->  0 errors and 0 warnings found.

The build timed out.

[kencu]

I have taken a slight detour while I try to see if luajit PPC is fixable.

[mojca]

I have taken a slight detour while I try to see if luajit PPC is fixable.

Fixable as in "builds at all" or fixable as in "works correctly"? I had some success with the first one, but not with the second. I forwarded you some of my super old notes.

[mojca]

Off-topic: LuaTeX will likely drop support for luajit in the future after realizing that there are hardly any performance benefits, and luajit is likely stuck with 5.1 forever. I forgot whether performance got better with newer versions of lua, or if it's simply because optimisations brought by luajit do not exactly make any difference in that particular application.

[kencu]

Yes - builds and crashes. May be a lost cause if the PPC Darwin 32bit ABI has not been integrated into luajit source -- same issue I have with llvm, where some of that ABI is not yet written. I found this ticket https://trac.macports.org/ticket/45343 which is a clue. I was going to try monkeying around with the optimization level and maybe set some ASSERTs, but ...

Fixed.

[kencu]

dave, I implemented your suggestions, so I'll just go ahead with this now rather than bug you further about it.

[dbevans]

Thanks for the help, Ken.

[barracuda156]

I have taken a slight detour while I try to see if luajit PPC is fixable.

luajit is fixed for PPC now: https://trac.macports.org/ticket/64853