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# Macros for reducing debug info size using dwz(1) utility.
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# The two default values below should result in dwz taking at most
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# 3GB of RAM or so on 64-bit hosts and 2.5GB on 32-bit hosts
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# on the largest *.debug files  (in mid 2012 those are
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# libreoffice-debuginfo, debuginfos containing
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# libxul.so.debug and libwebkitgtk-*.so.*.debug).
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# This needs to be tuned based on the amount of available RAM
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# on build boxes for each architecture as well as virtual address
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# space limitations if dwz is 32-bit program.  While it needs less
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# memory than 64-bit program because pointers are smaller, it can
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# never have more than 4GB-epsilon of RAM and on some architecture
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# even less than that (e.g. 2GB).
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# Number of debugging information entries (DIEs) above which
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# dwz will stop considering file for multifile optimizations
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# and enter a low memory mode, in which it will optimize
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# in about half the memory needed otherwise.
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%_dwz_low_mem_die_limit		 10000000
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# Number of DIEs above which dwz will stop processing
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# a file altogether.
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%_dwz_max_die_limit     	 50000000
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# On x86_64 increase the higher limit to make libwebkit* optimizable.
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# libwebkit* in mid 2012 contains roughly 87mil DIEs, and 64-bit
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# dwz is able to optimize it from ~1.1GB to ~410MB using 5.2GB of RAM.
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%_dwz_max_die_limit_x86_64	110000000
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# On ARM, build boxes often have only 512MB of RAM and are very slow.
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# Lower both the limits.
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%_dwz_low_mem_die_limit_armv5tel  4000000
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%_dwz_low_mem_die_limit_armv7hl	  4000000
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%_dwz_max_die_limit_armv5tel	 10000000
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%_dwz_max_die_limit_armv7hl	 10000000
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%_dwz_limit() %{expand:%%{?%{1}_%{_arch}}%%{!?%{1}_%{_arch}:%%%{1}}}
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%_find_debuginfo_dwz_opts --run-dwz\\\
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   --dwz-low-mem-die-limit %{_dwz_limit _dwz_low_mem_die_limit}\\\
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   --dwz-max-die-limit %{_dwz_limit _dwz_max_die_limit}