On Thu, 30 Jul 2009, Bob Friesenhahn wrote:
On Thu, 30 Jul 2009, Monty Taylor wrote:
The ever helpful setting of -g into CXXFLAGS by AC_PROG_CXX is incorrect
on Sun Studio (IMHO). Currently, the test checks for Sun Studio compiler
and, if so, injects -g. The problem is, -g on Sun Studio means "include
symbols _AND_ disable inlining" The appropriate flag that's similar to
-g on GCC is -g0. (Thanks Sun Studio, for being weird)
I suspect that in this case GCC is being weird since GCC differs from other
compilers. However, I agree that -g0 much better for the Sun compiler when
used with optimization allowed/enabled (-xO3 is Sun compiler default), and it
is what I use in my own optimized debug builds.
the original ("stated") reason for setting the flags in that way was that
gcc's optimization was bug-free, while this was not (supposedly) true of
other compilers.
(that's more/less the response I got from David MacKenzie long ago - I've
found no reason to agree with that opinion).
--
Thomas E. Dickey
http://invisible-island.net
ftp://invisible-island.net
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