dmd 1.052 for Mac OSX 10.6

[Jacob Carlborg]

On 11/13/09 15:30, Jacob Carlborg wrote:
> On 11/13/09 11:20, Walter Bright wrote:
>> Denis Koroskin wrote:
>>> On Fri, 13 Nov 2009 07:07:21 +0300, Walter Bright
>>> <newshound1 at digitalmars.com> wrote:
>>>
>>>> An update just to support Mac OSX 10.6. That also means the end of
>>>> the line for official support of 10.5 and earlier.
>>>>
>>>> http://ftp.digitalmars.com/dmd.1.051.zip
>>>
>>> Isn't there any way to support both platforms?
>>
>> No way to test on 10.5 without buying yet another machine. I don't know
>> if it works or not on 10.5. The "bus error" for 10.4 is probably back
>> because installing the 10.6 dev system from Apple seems to have deleted
>> the 10.4 stuff.
>>
>> If someone wants to test it on 10.5, please do and report back with the
>> results. If it does not, and there's some simple change to make it do
>> so, I'll be happy to fold it in.
>
> Can't you wrap the changes you made in:
>
> SInt32 MacVersion;
> if (Gestalt(gestaltSystemVersion, &MacVersion) == noErr)
> if (MacVersion >= 0x1050 && MacVersion < 0x1060)
> // Mac OS X 10.5.x code goes here
>
> else if (MacVersion >= 0x1060)
> // Mac OS X 10.6.x code goes here

That would be Mac OS X 10.6.x and later

>>> Looking at the changes, I think it's even possible to add a new DMD
>>> flag (e.g. "-osx=10.5", defaults to 10.6) and keep an older behavior
>>> on demand.
>>
>> The compiler changes should be backwards compatible with 10.5. (The
>> reason it didn't work with 10.6 is Apple changed the linker behavior; I
>> found a workaround which appears successful.)
>>
>>
>>> Alternatively, you could wrap the changes you made into #ifdef
>>> OSX_10_6 ... #else ... #endif so that users could compile DMD with
>>> older Macs support from source. DMD would then be distributed with 2
>>> binaries, e.g. dmd_10.6 and dmd_10.5 and dmd would be an alias/symlink
>>> to either of them (depending on the target platform).
>>
>> On Windows I can build one binary that works from NT to Win7, a 20 year
>> span of operating systems.
>