maxim wexler wrote:
CFLAGS="-O2 -march=pentium3 -pipe -mcpu=i686 -fomit-frame-pointer" CXXFLAGS="${CFLAGS}"there seems to be some controversy over the use of -fomit-frame-pointer. See the gentoo/doc, IIRC on USE flags. Just what does -fomit etc do?
The "frame pointer" points to the variables used in a "frame" (read: function). It is useful to have a pointer to these for debugging, but not for much else. fomit-frame-pointer can (on some platforms) allow gcc to re-use that register for the function, and maybe improve performance.
There should not be any controversy over it. According to the GCC documentation, it is automatically enabled at all optimization levels.
-Richard -- gentoo-user@gentoo.org mailing list
