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| From: | Thomas Dickey |
| Subject: | Re: flag issue in AC_PROG_CXX for Sun Studio |
| Date: | Thu, 30 Jul 2009 16:32:15 -0400 (EDT) |
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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