Re: Compile in Leopard, use in Tiger
Re: Compile in Leopard, use in Tiger
- Subject: Re: Compile in Leopard, use in Tiger
- From: David Elliott <email@hidden>
- Date: Fri, 23 Nov 2007 15:43:44 -0500
Hi Panayotis,
It's in the fine-print of the release notes but the bottom-line is
that the new developer tools set the "minimum version" to the
currently running system. Prior to Leopard's GCC, the compiler used
10.1 when compiling ppc code and 10.4 when compiling x86 code.
I suspect the reason for this change is the UNIX compliance. Unless
you target 10.5 as the minimum OS X version, your code will not be
UNIX compliant. Since code compiled with default compiler parameters
must be UNIX compliant in order for the system to be considered UNIX
compliant the compiler must use 10.5 as the default minimum OS X
version.
If you don't care about UNIX compliance and want the library to work
on prior OS X versions the fix is to add -mmacosx-version-min=10.4 to
your compiler flags.
-Dave
On Nov 23, 2007, at 8:59 AM, Panayotis Katsaloulis wrote:
Hello
I was trying to compile a program (a library actually) in my new shiny
Leopard, and then try to use it in Tiger.
Everything was OK, apart from the fact that the name of some functions
in the frameworks have changed.
To be more precise, I found that some symbols were missing, and
especially
_close$UNIX2003
_fputs$UNIX2003
_fwrite$UNIX2003
_mktime$UNIX2003
_open$UNIX2003
_read$UNIX2003
_strtod$UNIX2003
_write$UNIX2003
By searching this archive I found this post by Greg Parker:
http://lists.apple.com/archives/Darwin-dev/2007/Nov/msg00061.html
which is informative but doesn't really state which are these special
parameters, or what should I put in the #include directive, so that
the linker will try to link to "_close" function instead of
"_close$UNIX2003"
Any help with this?
--
Panayotis
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