[Bug 241385] [PATCH] databases/sqlite3: enable OS features

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=241385

            Bug ID: 241385
           Summary: [PATCH] databases/sqlite3: enable OS features
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: Individual Port(s)
          Assignee: ports-bugs at FreeBSD.org
          Reporter: rozhuk.im at gmail.com
                CC: pavelivolkov at gmail.com
             Flags: maintainer-feedback?(pavelivolkov at gmail.com)
                CC: pavelivolkov at gmail.com

Created attachment 208474
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=208474&action=edit
patch

Make script from sqlite3 a bit outdated and does not detect all OS features
that can be used by sqlite3.
For example it does not detect pread()/pwrite() and sqlite3 use lseek()+read()
instead of pread().
I walk trough all code and collect all HAVE_* switches that available on
FreeBSD.

PS: also
+               -DSQLITE_MAX_MMAP_SIZE=0x7fff0000 \
+               -DSQLITE_DEFAULT_MMAP_SIZE=0x7fff0000 \
can be set to force use mmap() instead of pread()/pwrite() but is not safe.
https://www.sqlite.org/mmap.html

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