avrdude @6.1_2 dispatch/dispatch.h: No such file or directory

[lars.haulin@…]

This error has the same cause as ​https://trac.macports.org/ticket/38430

dispatch/dispatch.h is part of Grand Central Dispatch, which was introduced in 10.6

I was trying to build avrdude with Xcode 2.5 and OSX 10.4.11, got it to compile with this hack:

$ diff ft245r.c ft245r_original.c 
131c131,138
< #include <sys/semaphore.h>
---
> /* Mac OS X defines sem_init but actually does not implement them */
> #include <dispatch/dispatch.h>
> 
> typedef dispatch_semaphore_t  sem_t;
> 
> #define sem_init(psem,x,val)  *psem = dispatch_semaphore_create(val)
> #define sem_post(psem)                dispatch_semaphore_signal(*psem)
> #define sem_wait(psem)                dispatch_semaphore_wait(*psem, DISPATCH_TIME_FOREVER)