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Add support for Mac OS < 10.15 #889

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Add support for Mac OS < 10.15 #889

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17 changes: 17 additions & 0 deletions src/core.c
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Original file line number Diff line number Diff line change
@@ -158,6 +158,21 @@ void b2SetAllocator( b2AllocFcn* allocFcn, b2FreeFcn* freeFcn )
// Use 32 byte alignment for everything. Works with 256bit SIMD.
#define B2_ALIGNMENT 32

// handle missing aligned_alloc on macOS versions before 10.15
#if defined ( B2_PLATFORM_MACOS )
__attribute__((weak_import)) void *aligned_alloc(size_t alignment, size_t size);
void* (*aligned_alloc_ptr)() = &aligned_alloc;
void *aligned_alloc_macos_lt_10_15(size_t alignment, size_t size) {
void* ptr = NULL;
if ( posix_memalign( &ptr, alignment, size ) != 0 )
{
// allocation failed, exit the application
exit( EXIT_FAILURE );
}
return ptr;
}
#endif

void* b2Alloc( int size )
{
if ( size == 0 )
@@ -192,6 +207,8 @@ void* b2Alloc( int size )
// allocation failed, exit the application
exit( EXIT_FAILURE );
}
#elif defined( B2_PLATFORM_MACOS )
void* ptr = aligned_alloc_ptr ? aligned_alloc( B2_ALIGNMENT, size32 ) : aligned_alloc_macos_lt_10_15( B2_ALIGNMENT, size32 );
#else
void* ptr = aligned_alloc( B2_ALIGNMENT, size32 );
#endif