icu @54.1 building fails in Tiger

[csanchezdll]

This should be really fixed upstream, but as Mac OS X 10.4 is no longer a supported platform, I see no point reporting there.

There are two problems preventing compilation:

1. ld does not have "-compatibility_version" nor "-current_version" switches. In Tiger those are "-dylib_compatibility_version" and "-dylib_current_versions". As those latter are also supported in latest XCodes, the patch can be unconditional.
2. Apple assembler does not have ".balign" directive. Either ".align" should be used (as in older icu releases) or compilation be made with non-apple gcc. Taken approach is using ".align".

Attached patch fixes both issues.

I think this makes ticket #43998 obsolete.

[csanchezdll]

Probably even easier to use -compatibility_version and -current_version parameters to gcc itself, just removing the -Wl prefix to pass them directly to the linker, and letting gcc driver pass the correct one. This is what modern libtool versions do.

[csanchezdll]

The "-compatibility_version" issue is solved by reinstalling apple-gcc42 port without the +bootstrap variant (as suggested by the port itself). Point 1. can therefore be ignored.

[csanchezdll]

My bad, ".balign" is present in the assembler since cctools-698. XCode-2.5 (last Tiger version) is 622.9 and only has ".align", but installing apple-gcc42 without +bootstrap installs newer cctools and fixes the problem. Bug can be marked as invalid. I am sorry for the noise.