Updating tk +quartz failed on Snow Leopard

[Ken Cunningham]

On 2016-08-25, at 8:20 PM, Kevin Walzer wrote:

> On 8/25/16 10:02 PM, Ryan Schmidt wrote:
>> I just haven't researched whether one is supposed to use MAC_OS_X_VERSION_MIN_REQUIRED or MAC_OS_X_VERSION_MAX_ALLOWED or __MAC_OS_X_VERSION_MAX_ALLOWED or something else.
> Can someone try something like this:
> 
> #if MAC_OS_X_VERSION_MIN_REQUIRED < 1070
> 
> [do someStuff:here andHere];
> 
> #endif
> 
> and see if it builds on 10.6? If so, send me a patch and I'll test it on 10.11 and commit if it works. I have no access to 10.6.
> 
> Thanks,
> Kevin
> 
> -- 
> Kevin Walzer
> Code by Kevin/Mobile Code by Kevin
> http://www.codebykevin.com
> http://www.wtmobilesoftware.com
> 
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> macports-dev mailing list
> macports-dev at lists.macosforge.org
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It looks like it works as expected. There are different ways to do the same thing, but the easy-to-read, non-underscore version of these tests uses <AvailabilityMacros.h> rather than the newer but more complicated <Availability.h>, and worked like this:

Testing out the following code on snow leopard:

------------------
#include <stdio.h>
#include <AvailabilityMacros.h>

#define MY_CURRENT_OS	MAC_OS_X_VERSION_MAX_ALLOWED

int main() {

printf("%d\n", MAC_OS_X_VERSION_MAX_ALLOWED); 
printf("%d\n", MAC_OS_X_VERSION_MIN_REQUIRED);



#if MAC_OS_X_VERSION_MAX_ALLOWED >= 1070
	printf("This code will only be seen and compiled Lion or greater!\n");
	// and more
#endif

#if MAC_OS_X_VERSION_MAX_ALLOWED == 1060
	printf("This code is only seen and compiled on Snow Leopard\n");
	// and more
#endif

#if MAC_OS_X_VERSION_MAX_ALLOWED <= 1050
	printf("This code is only seen and compiled on Leopard or Older\n");
	// and more

#endif


#if MAC_OS_X_VERSION_MIN_REQUIRED < 1070
	printf("This MIN version specifies code that is only seen and compiled on Snow Leopard or earlier\n");
	// and more
#endif


return 0;
}

----------------------

produces the following output:

KensMacBookPro:compiler tests cunningh$ clang test.c -o test
KensMacBookPro:compiler tests cunningh$ ./test
1060
1060
This code is only seen and compiled on Snow Leopard
This MIN version specifies code that is only seen and compiled on Snow Leopard or earlier