1) Is it true that all OSX boxes come with gcc / ld on them?
No - they're part of the developer tools package. Is there no way
you could depend on the developer tools?
2) How can I build an ld for maximum forwards and backwards
compatibility? I have tried to build cctools-622.3, but it doesn't
work just by running make (I get the following error):
../best_arch.c: In function `cpusubtype_combine':
../best_arch.c:478: error: `CPU_TYPE_VEO' undeclared (first use in
this function)
../best_arch.c:478: error: (Each undeclared identifier is reported
only once
../best_arch.c:478: error: for each function it appears in.)
../best_arch.c:483: error: `CPU_SUBTYPE_VEO_1' undeclared (first
use in this function)
../best_arch.c:484: error: `CPU_SUBTYPE_VEO_2' undeclared (first
use in this function)
grepping in /usr/include for CPU_TYPE_VEO doesn't find anything,
and the situation is even worse for the SDKs in /Developer/SDKs/
(I would like to build against the oldest SDK possible). I can't
find any mention of how to do this in any past postings to this list.
How do I go about getting a working build of ld?
The CPU_TYPE_VEO is definitely in the source code for xnu with 10.4.5
but you *could* just M-x comment-region (we all use emacs, right?)
those parts of the switch/case where the VEO is referenced; after all
you only really care about ppc, i386, and possibly the 64-bit
variants. There's probably still some SPARC, PA_RISC and m68k/m88k
code around if you look hard enough ;-)
3) It is okay to just grab the gcc / ld binaries from my system?
When I downloaded Xcode, I had to click through a license saying I
wouldn't redistribute it, but I have since seen a license on
Apple's site which says it can be used on the terms of the Apple
Public Source License, which allows me to redistribute the code:
"2.1 Unmodified Code. You may use, reproduce, display, perform,
internally distribute within Your organization, and Externally
Deploy verbatim, unmodified copies of the Original Code, for
commercial or non-commercial purposes, provided that in each
instance:" ...
I'm not from Apple, but the gcc and ld binaries *themselves* are
definitely licensed in such a way as to be redistributable. In the
case of gcc, you need to also make the source code available. In the
case of cctools, you need to include a notice of the licence terms
and describe how the source code may be obtained. Xcode of course is
not does not have such a licence ;-)
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