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manywarnings and -f options
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From: |
Eric Blake |
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Subject: |
manywarnings and -f options |
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Date: |
Fri, 02 Dec 2011 11:05:41 -0700 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:8.0) Gecko/20111115 Thunderbird/8.0 |
Should gl_MANYWARN_ALL_GCC be adding some gcc -f options? For example,
at least gcc 4.3.4 -Wdisabled-optimization would emit a warning that
several other -W warnings are useless without -funit-at-a-time also in
place (see coreutils commit 5e361387d). Also, according to 'info gcc,
-Wsuggest-attribute=pure only works if -fipa-pure-const is turned on
(true by default for -O compilation, but apparently the -W option can
also catch a few cases even without -O if -fipa-pure-const is manually
turned on).
--
Eric Blake address@hidden +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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- manywarnings and -f options,
Eric Blake <=