MacOS < 10.6 has no memalign
I use definition of
aligned_malloc from trunk in a st_pool_allocation patch for ruby_1_9_3,
and I have report from a man who has OS X 10.5.8 , that there is such error:
pool_alloc.inc.h:55:2: error: #error no memalign function
It seems that OS X before 10.6 had no memalign or posix_memalign function.
valloc could be used with similar HEAP_ALIGN_LOG determination as done for OpenBSD in http://bugs.ruby-lang.org/projects/ruby-trunk/repository/revisions/34404
As you can see, it is not possible to choose different version of MacOS here:
#1 [ruby-core:42342] Updated by Yui NARUSE about 5 years ago
- Status changed from Open to Rejected
We won't support Mac OS X 10.5 or prior on Ruby 2.0.0.
So it is WONTFIX.
We won't backport st_pool_allocation to 1.9.3, so it is also not a problem for us.
You can make a memalign function with mmap by allocating big area and strip the edge
if you want to backport locally.